Concrete-Flooring-Bison-Precast-C3346.Pdf

Uniclass L7315

CI/SfB (52.3) X August 2007

LEADING THE PRECAST INDUSTRY SINCE 1919

PRECAST CONCRETE FLOORING This Bison precast concrete flooring document is a comprehensive product and technical guide designed for Structural Engineers, Civil Engineers, Specifiers and Contractors.

It provides a range of products and solutions to choose from and is supported by technical details, specifications and design guidelines/considerations for Part A, Part E and Part L.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk CONTENTS

INTRODUCTION PAGES 0 - 7

COMMERCIAL/INDUSTRIAL PRODUCTS PAGES 08 - 23 01

HOUSING PRODUCTS SINGLE OCCUPANCY PAGES 24 - 29 02

HOUSING PRODUCTS MULTIPLE OCCUPANCY PAGES 30 - 39 03

COMPOSITE STEEL BEAM DESIGN PAGES 40 - 41 04

BUILDING REGULATIONS PAGES 42 - 57 05

SPECIFICATIONS & HEALTH AND SAFETY PAGES 58 - 61 06

RELATED PRODUCTS PAGES 62 - 63 07

BISON ONLINE PAGES 64 08

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BISON LEADING THE PRECAST INDUSTRY SINCE 1919

Excellent customer service, investment in research and development and an unrivalled understanding of market needs are just some of the reasons we have been ahead of the field for so long.

RESOURCE and Capacity Innovation The largest production capacity across four manufacturing Over the last seven years, Bison has invested £50 million plants throughout the UK, with Certificates of Assessed to ensure that our customers continue to benefit from Capability, awarded by the British Standards Institution. innovative approaches to production, installation and service. We can boast a number of unique developments such as mechanically inserted Lifting Hooks and the Trailasafe® fall arrest system.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk Sustainability DESIGN SUPPORT With Bison products, you can be certain that all materials Bison’s in-house have been produced in conditions designed to have as little team represents impact on the environment as possible. Swadlincote is the the very best most environmentally friendly factory of its kind in in the industry the world. and is on hand to give design Customer Driven advice for any Our investment is focused on meeting and exceeding project, large customer expectations. Bison customers in all the sectors or small. They can help identify the optimal solution for we serve know that they can rely on us for outstanding your project, whether this means using one of our many technical support, reliability and the highest quality product. precision-made steel moulds, or taking the bespoke approach with a custom-made casting. Customer SERVICE The Bison service team provide comprehensive support, Designs are produced in our centralised production from estimating to production and a contract team who planning department and downloaded to the factory install the products on site. Wherever you are in the UK, machines by wireless link. Bison’s nationwide coverage ensures that support is never far away. The Bison Precast Floor Designer software can assist with the design of many Bison products including Hollow Core slab units, Composite Hollowcore slab units and Solid Composite slab units.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BISON CONCRETE FLOOR TYPES

Bison Concrete Floors are prestressed precast concrete slabs used in all building types

Bison Concrete Floors are manufactured using a long line casting technique with automatic casting equipment which places high strength, low water/ cement ratio concrete under a high degree of vibration and compaction.

BISON HOLLOW CORE BISON HOLLOW & SOLID FLOORS COMPOSITE FLOORS Widely used in masonry, steel and concrete structures for A combination of the Bison Hollow Core Slab with a structural domestic, commercial and industrial buildings. The most concrete topping. This type of floor gives the benefit of an economic flooring solution for the widest variety of situations, increased structural performance with an enhanced lateral providing the maximum benefits of speed of construction. load distribution where necessary for heavy point loads. The floor may be designed in the unpropped or partially propped condition to suit particular requirements.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk BISON CONCRETE FLOOR TYPES

BISON SOLID THE BISON COMPOSITE FLOORS SOUND SLAB Combines the advantages of a precast, prestressed The Bison Sound Slab has been specially developed to element acting compositely with an in-situ concrete provide an economic and structurally efficient means of structural topping to form a solid slab. The prestressed satisfying the requirements of Part E Sound Regulations. element, whilst eliminating the need for conventional shuttering, provides a structural performance far superior Floor Heating and to normally reinforced concrete. Cooling Systems As the conservation of energy continues to be a major LIFTING HOOKS issue surrounding the environment, Bison has entered into All Bison Precast Concrete Floors are available with a strategic partnership with velta UK. With over 35 years’ inserted lifting hooks. For more information see section experience, velta have been responsible for some of the ‘Related Products’, pages 62 & 63. industry’s most important innovations in floor heating and cooling systems and now offers the widest range of INSULATED HOLLOW CORE solutions specifically designed to meet the requirements of GROUND FLOORS each individual project. Bison and velta have joined forces The system consists of expanded polystyrene (EPS) bonded to provide an innovative, sustainable and cost effective floor to the soffit of Hollow Core units and formed to provide heating and cooling system which is precast in to Bison special end and side bearing support where required. flooring products providing off site manufacturing benefits.

7 7

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 MARKET APPLICATIONS COMMERCIAL/ INDUSTRIAL

Bison has a prolonged proven track record within commercial/industrial markets and produces a range of products and solutions for many different floor applications.

This encompasses shops, shopping precincts, multi-storey car parks, office developments, factories and warehouses.

However, the types of constructional components used in these buildings are also often specified for large public developments such as schools and hospitals.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk MARKET APPLICATIONS HOUSING

HOUSING HOUSING SINGLE OCCUPANCY MULTIPLE OCCUPANCY

In traditional single-occupancy housing, individual Bison Similarly for multiple-occupancy housing, individual products can solve particular problems for the designer, arising Bison products can solve particular problems. from site conditions, constructional constraints or the Building Bison has a sustained track record and reputation within Regulations, including Part E, Part A and Part L. the multiple occupancy market. A range of floor solutions and products provide the architect and the structural engineer with flexibility in design as well as satisfying the Building Regulations, particularly with reference to sound attenuations (Part E), Thermal Performance (Part L) and Structural Robustness (Part A).

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 COMMERCIAL / INDUSTRIAL PRODUCTS

HOLLOW CORE FLOORS THE BENEFITS

DESIGN

Structural Efficiency Extra Long Spans A Hollow Core slab offers the ideal structural section by Factory made prestressed units offer the design benefit of reducing deadweight while providing the maximum structural long span units for given depths. This avoids the need for efficiency within the slab depth. intermediate supports and provides an economically light solution throughout the entire structure. The Bison long span Flexibility of Design Approach 450mm-deep unit can span in excess of 16 metres. Precast floors are available with a variety of factory-formed notches, slots and reinforcement arrangements which offer various design approaches.

MANUFACTURING

Factory produced to Rigorous Quality Standards Shelf Angle Bearing Because precast floors are factory produced, they are Slab ends can be notched during manufacture to facilitate a manufactured in an environment which is more readily bearing within the depth of a main steel support. controlled than a building site. Quality control systems are This minimises storey height, causing substantial cost properly implemented and are independently examined on a benefits from reduced cladding, lower internal fittings and regular basis under the British Standards Institution Quality other related peripherals. Assurance Scheme, BS EN ISO 9001 approved. Diaphragm Action Fire Resistance Precast floor slabs are structurally grouted to provide a Standard precast floors can be supplied with a fire resistance floor with full diaphragm action, as required in most of up to two hours. Periods in excess of this can be provided multi–storey frameworks. with modified sections if required. Preformed Site Services Finished Soffits Precast floors can be provided with factory formed service Precast floors are manufactured on high quality steel beds holes, thus avoiding laborious setting out and shuttering and, in appropriate cases, are suitable for direct decoration. on site. Exposed soffits can easily be accommodated.

CONSTRUCTION

Minimum In-situ Concrete Immediate Unpropped Working Platform With a precast floor, a lot of the work is done off site. This Once a precast floor is erected, it is immediately available eliminates what can be complex, time-consuming and as a working platform. In comparison, steel deck systems weather-affected site work. can present problems in achieving level surfaces while concrete is being poured, and in enabling access while in Speed of Erection the propped condition. Time-consuming activities such as propping, shuttering and concrete-pouring are virtually eliminated.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 01

HOLLOW CORE FLOORS CASE STUDIES

COMMERCIAL BUILDINGS AND CAR PARKS

The office block shown is the British Gas offices in Solihull, West Midlands. This is a typical commercial application where the structural form consists of a steel frame with 7.5 x 8.7m bays and 200mm precast Hollow Core units spanning 7.5m. A total of 9100m2 of precast units were used and 40m3 of precast stair.

Multi storey car park in Nuneaton where 10,000m2 of 150mm deep Hollow Core floor units and 67m3 of precast stair units was used to provide excellent durability and performance in a busy, robust car park environment.

RETAIL DEVELOPMENTS

The IKEA outlet in Manchester is constructed using a steel frame with precast unit floors. Over 40,000m2 of 200mm deep Hollow Core precast floor units were used in the construction. The grid reflected the use of car park, retail and offices on different floors.

Drake Circus Shopping Centre located in Plymouth used 19,000m2 across a combination of Hollow Core floor profiles from 200mm up to 450mm deep.

HOSPITAL & STADIA DEVELOPMENTS

Pictured is a hospital in Exeter constructed using a steel frame structure with 200mm and 300mm deep Hollow Core units used to span up to 9m. This provided flexibility in span lengths and optimised design for the applied loads over 4,250m2 floor area throughout.

Millennium Stadium in Cardiff used over 48,000m2 of precast Hollow Core floor units and over 380 precast stair units.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 COMMERCIAL / INDUSTRIAL PRODUCTS

HOLLOW CORE FLOORS UNIT PROFILES

150mm Sound Slab unit profile

75mm unit profile

100mm unit profile

150mm unit profile

200mm unit profile

250mm unit profile

260mm unit profile

300mm unit profile

350mm unit profile

400mm unit profile

450mm unit profile

12 1200mm Nominal Width

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 01

HOLLOW CORE FLOORS LOAD/SPAN TABLE

Largely because of fast on-site construction, Bison Hollow Core Floors are one of the most economic flooring solutions for the widest variety of situations including masonry, steel and concrete structures for retail, commercial and industrial buildings.

Spans indicated below allow for characteristic service load (live load) plus self weight plus 1.5 kN/m2 for finishes

Overall 2 structural Characteristic service loads kN/m depth mm 0.75 1.5 2.0 2.5 3.0 4.0 5.0 7.5 10..0 15.0

Effective span in metres

100* 5 5 5 5 4.8 4.5 4.2 3.7 3.3 2.8

150* 7.5 7.5 7.5 7.5 7.3 6.8 6.4 5.6 5 3.2

200 10 10 9.7 9.4 9.1 8.5 8 7.1 6.4 5.5

250 12.3 11.5 11.1 10.7 10.4 9.7 9.2 8.1 7.4 6.3

300 15 14.9 14.4 13.9 13.5 12.8 12.1 10.9 10 8.7

350 17.4 16.5 15.9 15.5 15 14.2 13.6 12.5 11.2 9.8

400 18.5 17.6 17 16.6 16.1 15.3 14.6 13.2 12.1 10.6

450 19.9 19 18.5 18 17.5 16.7 15.9 14.5 13.4 11.7

The table is given as a guide only. When using maximum spans, consideration must be given to the effect of camber and deflection on partitions or finishes. Further advice is available on request. * 35mm screed required for 2 hour fire resistance.

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HOLLOW CORE FLOORS BEARING DETAILS

BEARING ON SHELF ANGLES

Finishes Structural concrete infill

Nominal bearing 75 Projection of angle Minimum bearing 50 beyond extremity of flange 50 mm. Greater where U.C. sections are used. Refer to Bison for assistance.

25 mm clearance

25 mm clearance is required to allow unit to be dropped into position past the flange of the supporting U.B.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 01

HOLLOW CORE FLOORS BEARING DETAILS

BEARING ON MASONRY

Finishes

Nominal bearing t / 2 - 10 mm

Wall thickness t t 190

SIDE BEARING

Where required by Building Regulations for sound insulation.

Finishes

Continuous wet mortar by builder to take up camber

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HOLLOW CORE FLOORS BEARING DETAILS

NARROW WALL BEARING

Finishes Structural concrete infill

Structural concrete infill

Nominal bearing Tie reinforcement at t / 2 - 10 mm 400 c/c in joints and (Min. 65 mm) troughs provided in Wall thickness 1200 wide units t < 190 t (Min. 140 mm)

(NB. In order to satisfy the tolerances in this situation, this detail is only recommended where a full bearing is available at the other end of the slab)

NARROW BEARING ON STEELWORK

Structural concrete infill

Finishes Structural concrete infill

Nominal bearing Tie reinforcement at t / 2 - 10 mm 400 c/c in joints and troughs provided in 1200 wide units Wall thickness t 150 t (Min. 140 mm)

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SECTION 01

HOLLOW CORE FLOORS BEARING DETAILS

END SLOTS IN UNITS

Slots may be provided in slab ends for the purpose of tying into the structure for nominal continuity. Finishes Structural concrete infill

TRIMMING OPENINGS

M.S.Trimmer. Fire protection, where necessary by General Contractor.

Finishes

The recommendations for bearings of precast units are set out in Clause 5.2.3 of B.S. 8110:1997. These vary according to the type of floor construction and the type of support material and building tolerances. In general nominal bearings of 100 mm on masonry or 75 mm on steelwork are recommended but may be reduced dependent upon circumstances and subject to the above clause.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 COMMERCIAL / INDUSTRIAL PRODUCTS

HOLLOW COMPOSITE FLOORS UNIT PROFILES

200 to 225mm overall composite depth comprising 150mm unit with 50 or 75mm structural topping

250 to 275mm overall composite depth comprising 200mm unit with 50 or 75mm structural topping

300 to 325mm overall composite depth comprising 250mm unit with 50 or 75mm structural topping

335mm overall composite depth comprising 260mm unit with 75mm structural topping

375mm overall composite depth comprising 300mm unit with 75mm structural topping

425mm overall composite depth comprising 350mm unit with 75mm structural topping

475mm overall composite depth comprising 400mm unit with 75mm structural topping

525mm overall composite depth comprising 450mm unit with 75mm composite material

18 1200mm Nominal Width

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 01

HOLLOW COMPOSITE FLOORS LOAD/SPAN TABLE

A Bison Hollow Composite Floor is a Bison Hollow Core Slab with a structural concrete topping. This combination delivers increased structural performance overall, with an improved lateral load distribution where necessary for heavy point loads. The floor may be designed in the unpropped or partially propped condition to suit particular requirements. It is particularly suitable for industrial buildings, high buildings, car parks or other structures where additional longitudinal and transverse tying is required.

Spans indicated below allow for characteristic service load (live load) plus self weight plus 1.5 kN/m2 for finishes

Overall 2 structural Characteristic service loads kN/m depth mm 0.75 1.5 2.0 2.5 3.0 4.0 5.0 10..0 15.0

Effective span in metres

200 8.25 8.25 8.1 7.9 7.7 7.4 7.1 5.8 4.9

250 10.4 9.9 9.7 9.4 9.2 8.8 8.4 7 6

300 11.7 11.2 10.9 10.6 10.4 9.9 9.5 7.8 6.8

375 14.5 14 13.7 13.5 13.2 12.7 12.3 10.7 8.8

425 16 15.5 15.2 14.9 14.6 14.1 13.7 11.9 10

475 17.1 16.5 16.2 15.9 15.6 15.1 14.6 12.7 10.7

525 18.5 17.9 17.6 17.3 17 16.4 15.9 13.9 11.7

The above data is based upon 50 or 75mm structural topping of C30 concrete which should be regarded as a minimum. Other topping depths may be recommended in some circumstances. Design data for alternative combinations are available from Bison design offices. In relation to the overall structural concept of the building it is also important also to consider topping reinforcement, daywork and movement joints.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 COMMERCIAL / INDUSTRIAL PRODUCTS

SOLID COMPOSITE FLOORS UNIT PROFILES

Bison Solid Composite Floors consist of a precast, prestressed element acting compositely with an in-situ concrete structural topping to form a solid slab. This combination of elements delivers the benefits of both, such as a structural performance far superior to normally-reinforced concrete, reduced construction depths, no shuttering, minimal propping, built-in fire resistance, fast erection, and increased flexibility of architectural and engineering design, such as the scope to incorporate all the details normally associated with in-situ design, such as the tying in of balconies, trimming of openings, maximum load distribution and minimum structural depth.

75mm unit with 50mm structural topping

75mm unit with 75mm structural topping

75mm unit with 100mm structural topping

75mm unit with 125mm structural topping

100mm unit with 50mm structural topping

100mm unit with 100mm structural topping

100mm unit with 150mm structural topping

100mm unit with 200mm structural topping

1200mm Nominal Width

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 01

SOLID COMPOSITE FLOORS LOAD/SPAN TABLE

F ire R esistance* Spans indicated below allow for characteristic service load (live load) plus self weight plus 1.5 kN / m2 for finishes Overall Propped Unit Self Wt 2 structural or Characteristic service loads kN / m depth kN / m2 depth mm Unpropped 0.75 1.5 2.0 2.5 3.0 4.0 5.0 10.0 15.0

Effective span in metres

125 2.95 6.70 6.25 6.00 5.70 5.50 5.15 4.87 3.90 3.80

1 hour 150 3.54 7.50 7.00 6.80 6.50 6.35 5.95 5.60 4.56 3.92 75 P 175 4.12 8.32 7.78 7.52 7.25 7.02 6.62 6.29 5.12 4.05

200 4.71 8.90 8.40 8.12 7.85 7.62 7.20 6.85 4.98 3.96

125 2.95 3.75 3.75 3.75 3.75 3.75 3.75 3.75 3.60 3.10

1 hour 150 3.54 3.75 3.75 3.75 3.75 3.75 3.75 3.75 3.75 3.50 75 U/P 175 4.12 3.75 3.75 3.75 3.75 3.75 3.75 3.75 3.75 3.65

200 4.71 3.75 3.75 3.75 3.75 3.75 3.75 3.75 3.75 3.68

150 3.54 7.80 7.27 7.00 6.75 6.50 6.10 6.77 4.55 3.85

1 hour 200 4.71 9.10 8.64 8.22 8.08 7.82 7.33 7.05 5.80 4.50 100 P 250 5.89 10.18 9.85 9.15 9.00 8.90 8.45 8.08 6.12 4.50

300 7.07 10.66 9.58 9.45 9.15 8.80 8.15 7.60 5.80 4.40

150 3.54 5.00 5.00 5.00 5.00 5.00 5.00 5.00 4.50 3.88

1 hour 200 4.71 5.00 5.00 5.00 5.00 5.00 5.00 5.00 4.96 4.50 100 U/P 250 5.89 5.00 5.00 5.00 5.00 5.00 5.00 5.00 4.80 4.50

300 7.07 4.95 4.92 4.90 4.88 4.85 4.80 4.71 4.60 4.40

150 3.54 7.26 6.80 6.66 6.46 6.23 5.85 5.50 4.30 3.60

2 hour 200 4.71 8.57 8.25 8.05 7.83 7.10 6.85 6.60 5.62 4.25 100 P 250 5.89 9.00 8.80 8.65 8.50 8.35 8.10 7.80 5.75 4.35

300 7.07 10.20 9.00 8.90 8.70 8.30 7.30 7.20 5.50 4.20

150 3.54 5.00 5.00 5.00 5.00 5.00 5.00 5.00 4.30 3.62

2 hour 200 4.71 5.00 5.00 5.00 5.00 5.00 5.00 5.00 4.60 4.20 100 U/P 250 5.89 5.00 5.00 5.00 4.95 4.90 4.85 4.80 4.55 4.35

300 7.07 4.65 4.65 4.65 4.65 4.60 4.55 4.55 4.40 4.02

*Enhancement of the stated fire period may be achieved by applied soffit finishes. 21

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SOLID COMPOSITE FLOORS BEARING DETAILS

SIMPLE BEARINGS ON TOP FLANGE OF STEELWORK

Nominal support reinforcement and/or daywork joints determined by general layout and site operation.

40 mm Min. bearing 40 mm Min. bearing

SLAB COMPOSITE WITH SUPPORTING BEAM

Flange reinforcement and shear studs as required by steelwork design

40 mm Min. bearing

BEARINGS ON SHELF ANGLES

Minimum 25 mm cover to top of steel beam flange

Minimum 50 mm clearance Nominal 50 mm bearing

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SECTION 01

SOLID COMPOSITE FLOORS BEARING DETAILS

CANTILEVER CONSTRUCTION

In-situ structural topping on precast element

Precast balcony element

For IsoPro balcony requirements refer to Bison for assistance.

IN-SITU CONSTRUCTION CENTRED

Solid composite floors may be placed on in-situ beam downstands or supported on shutters before pouring site concrete

Nominal 50 mm bearing for precast elements

IN-SITU CONSTRUCTION SIDE

Beam depths and widths to suit specific requirements

Nominal 50 mm bearing for precast elements

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HOLLOW CORE FLOORS THE BENEFITS

USER BENEFITS

Sound Resistance Fire The single most common complaint in relation to housing Adequate fire resistance is an important design feature of any is noise nuisance. Timber floors have little sound resistance modern building. It has long been recognised that floors between and most people will be familiar with the problems and the flats in multi-occupancy housing should have a high level of fire inconvenience of sound transmission, particularly from upstairs resistance. Consequently, these are almost always constructed to downstairs. Precast concrete floors provide an extremely in concrete in order to satisfy the Building Regulations. It seems efficient sound barrier between separate living areas. reasonable that a similar level of protection should be afforded to those living in houses. Concrete is, of course, a non-combustible Maintenance material and it also acts as a solid barrier which will contain not Precast concrete is an inert material. It does not shrink only the fire but the smoke, which is the primary cause of most and warp like timber and does not produce the cracking of fatalities in fire accidents. plasterwork and other finishes which result in an ongoing and costly maintenance problem. Concrete is not subject to Factory Produced to Rigorous Quality Standards damage from rot or insect attack. Because precast floors are factory produced, they are manufactured in an environment which is more readily Squeaky Floors controlled than a building site. Quality control systems in Another problem associated with the shrinkage of timber Bison factories are properly implemented and are independently materials is the squeaking between boards and joists when examined on a regular basis under The British Standards walked upon. This is extremely irritating and very expensive to Institution Quality Management System defined in BS EN ISO 9001. rectify. This problem does not exist with a concrete floor.

CONSTRUCTION BENEFITS

Design flexibility Structural Efficiency Unlike timber, a precast concrete floor provides a structural A Hollow Core slab offers the ideal structural section by platform which gives the house designer greater freedom in reducing the deadweight whilst providing the maximum supporting upper floor wall partitions to virtually any layout. structural efficiency with the minimum slab depth. This offers Furthermore with a concrete upper floor the partitions can be the design benefit of longer spans, thus reducing the lengths built in blockwork with its greater sound resistance, instead of of internal loadbearing walls and foundations. timber stud. Site Safety Speed of Erection Once a precast concrete floor is erected it is immediately Typically a single precast floor slab is up to 10 square metres available as a working platform. Combined with Trailasafe® in area and can be laid in minutes. Dependent upon site synthetic mesh for trailer deck fall arrest, and the Bison Air conditions and house sizes, the floors to several houses can Mat for roll-off fall protection, this creates the safest possible normally be completed in one day. environment for site workers.

Preformed Service Provision Precast concrete floors can be provided with factory-formed service holes to accommodate all the necessary service routes with ease.

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HOUSING PRODUCTS SINGLE OCCUPANCY SECTION 02

HOLLOW CORE FLOORS CASE STUDIES

TERRACED SINGLE OCCUPANCY HOUSING DEVELOPMENTS

Pictured is part of a large housing development based in London. Over 578m2 of 150mm Hollow Core floor units were used throughout for 1st and 2nd floor applications across varying design type houses, typically from town type, 2 floor houses, to traditional 1st floor houses.

Hollow Core floors have been installed by many housebuilders, both large and small, for terraced developments.

DETACHED HOUSING DEVELOPMENTS

Pictured is a detached housing development based in Warwick. The development was a mix of three, four and five bedroom detached houses, where 250m2 of 150mm Hollow Core units were used throughout the plot for all first floor applications.

Further detached developments using Hollow Core floors have been constructed across the country, from Sterling in Scotland to Portsmouth in England.

LARGE ESTATE HOUSING DEVELOPMENTS

Pictured is an estate type housing, consisting of 8 bedrooms, 24 rooms and 3 outbuildings based in Oxshott.

496m2 of Hollow Core floor units were used throughout the house.

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HOLLOW CORE FLOORS GROUND/UPPER FLOOR SLAB PROFILES

The most suitable and widely used precast unit for single occupancy housing is a 1200mm wide Hollow Core slab with a depth of either 150 or 200mm.

150mm unit profile

200mm unit profile

1200mm Nominal Width

CONSTRUCTION DETAILS

TYPICAL HOUSE LAYOUTS

1200 mm Wide Units

Structural steel supports Slab span direction Load bearing walls Non-Load bearing walls by others

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SECTION 02

HOLLOW CORE FLOORS alternative batten arrangements to soffits

Battens Plasterboard

Short firing is not recommended. Various site-drilled anchors are available and, used in accordance with the manufacturers instructions, are a simple and economic fixing method.

Service routes in ceiling void Battens and counterbattens Plasterboard

To view load span tables please go to page 13

A SUSTAINABLE CHOICE...

The use of Bison Hollow Core flooring can significantly cut the carbon dioxide emissions of a project by up to one

fifth; a CO2 reduction and material saving of 23% can be achieved in the construction of an office block.*

*based on a 2600m2 office block development

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HOLLOW CORE FLOORS BEARING DETAILS

TYPICAL DUAL BEARING

Alternative Alternative services route services route

190 mm Block Wall

SIDE BEARING

Where required by Building Regulations for sound insulation.

Finishes

Continuous wet mortar by builder to take up camber

TYPICAL SINGLE BEARING TRIMMING OPENINGS

M.S.Trimmer. Fire protection, where necessary by General Contractor.

100 mm Block Wall 190 mm Block Wall 28

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SECTION 02

INSULATED HOLLOW CORE FLOORS GROUND FLOOR

150 mm unit profile

200 mm unit profile

1200 mm Nominal Width

INSULATED HOLLOW CORE UNIT DETAILS

Finishes 150 mm or 200 mm

Hollow Core Unit Expanded Polystyrene Support Castellations (EPS) bonded to soffit

INSULATED HOLLOW CORE FLOORS BEARING DETAILS

DUAL BEARING EXTERNAL WALL BEARING

Finishes Support Castellations

Finishes

190 mm 262 mm Sleeper Wall or 312 mm Expanded Polystyrene (EPS) bonded to soffit Foundation

The Building Regulations Part L1A, L2A 2006 ‘Conservation of fuel and power’ require that a building is airtight and pressure testing for this is covered by regulation 54. The regulations no longer allow the elemental method and a building needs to be considered as a whole to satisfy the requirements of the regulations. Bison can provide an insulated slab to give a thermal ‘U’ value of 0.22W/m2 for the floor and greater if required. 29

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 HOUSING PRODUCTS MULTIPLE OCCUPANCY

HOLLOW CORE FLOORS THE BENEFITS

Speed of Erection Composite Steel Beam Design Time consuming activities such as propping, shuttering and Composite Steel Beam Design incorporating either Hollow concrete pouring are virtually eliminated. Core or solid slabs provides a structural and cost efficient solution for steel frames. It reduces total tonnage of steel Lifting Hooks beams by up to 40% and also reduces the number of Bison can supply Hollow Core units with cast-in lifting hooks components to be erected. that speed up the installation and bring associated Health & Safety benefits. Sound Requirements Building Regulations Part E Immediate Unpropped Working Platform In new-build attached dwellings a developer may choose Propping is generally not required with Hollow Core floors. between Pre-Completion Testing (PCT.) or, if available, a Once a precast floor is erected it is immediately available Robust Detail (RD). Bison Concrete Products have developed as a working platform. In comparison, steel deck systems a series of solutions to cover the use of precast concrete can present problems in achieving level surfaces while units in association with masonry buildings and steel and concrete is poured, and in enabling access while in the concrete frames. Solutions have been developed and testing propped condition. is in the process of being completed prior to an application for Robust Detail status. Minimum In-situ Concrete With a precast floor a lot of the work is done off-site. This Preformed Site Services eliminates on-site work that can be complex, time-consuming Precast floors can be provided with factory formed service and weather affected. holes, thus avoiding laborious setting out and shuttering on-site. Extra Long Spans Factory-made prestressed units offer the design advantage Structural Efficiency of long span units for given depths. This can avoid the need A Hollow Core slab offers the ideal structural section by for intermediate supports. reducing the deadweight whilst providing the maximum structural efficiency within the slab depth. Diaphragm Action Precast floor slabs, when structurally grouted, provide a Factory-Produced to Rigorous floor with full diaphragm action to the building. A structural Quality Standards concrete topping is not required. Because precast floors are factory-produced, they are manufactured in an environment which is more controlled Flexibility of Design Approach than a building site. Quality control systems are properly Precast floors can provide the technical solution for the implemented and are independently examined on a regular requirements of Part A of the Building Regulations 2004 for basis, under the British Standards Institution Quality Disproportionate Collapse. Management Scheme defined in BS EN ISO 9001:2000.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 03

HOLLOW CORE FLOORS TRACK RECORD

MULTI-STOREY HOUSING

The three block housing development in Windsor consisted of 1st, 2nd, 3rd and roof with the other two blocks being 1st, 2nd and roof. All three blocks used 200mm deep Hollow Core sound slab flooring with 3897m2 used throughout the scheme and 30m3 of concrete precast stairs.

MULTI-STOREY HOUSING

The housing development in Worcester, which used 1,700m2 of 200mm deep Hollow Core sound slab flooring and 10m3 of precast concrete stairs. This included one three storey block and one 4 storey block.

MULTI-STOREY RESIDENTIAL DEVELOPMENTS

This multi-storey residential development used precast Hollow Core floors within a steel frame structure. The development is in Walsall, Birmingham, and used 1500m2 of 200mm deep Hollow Core sound slab flooring, plus 29m3 of precast stair units.

A flat, uninterrupted soffit was achieved with the Hollow Core units, spanning 6.1m between downstand beams, which were at separating wall positions.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 HOUSING PRODUCTS MULTIPLE OCCUPANCY

HOLLOW CORE FLOORS UNIT PROFILES

150mm Sound Slab unit profile

150mm unit profile

200mm unit profile

250mm unit profile

260mm unit profile

300mm unit profile

1200 mm Nominal Width

To view load span tables please go to page 13

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 03

HOLLOW CORE COMPOSITE FLOORS UNIT PROFILES

250 to 225mm overall composite depth comprising 150mm unit with 50 or 75mm structural topping

250 to 275mm overall composite depth comprising 200mm unit with 50 or 75mm structural topping

300 to 325mm overall composite depth comprising 250mm unit with 50 or 75mm structural topping

335mm overall composite depth comprising 260mm unit with 75mm structural topping

375mm overall composite depth comprising 300mm unit with 75mm structural topping

1200 mm Nominal Width

A SUSTAINABLE PROCESS...

Bison precast floors are produced under sustainable conditions at our flagship production plant at Swadlincote, Derbyshire. The state of the art Hollow Core plant is the most technically advanced and sustainable of its kind in the world: all waste water from the factory is recycled; the fully automated process To view load span tables please is energy efficient, taking only 12 hours; and the manufacturing process maximizes efficiency, which go to page 13 prevents material wastage.

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HOLLOW CORE FLOORS BEARING DETAILS

The recommendations for bearings of precast units are set out in Clause 5.2.3 of B.S. 8110:1997. These vary according to the type of floor construction and the type of support material and building tolerances. In general, nominal bearings of 100mm on masonry or 75mm on steelwork are recommended but may be reduced dependent upon circumstances and subject to the above clause.

BEARINGS ON SHELF ANGLES

Finishes Structural concrete infill

Nominal bearing 75 Projection of angle Minimum bearing 50 beyond extremity of flange 50 mm. Greater where U.C. sections are used

25 mm clearance

25 mm clearance is required to allow unit to be dropped into position past the flange of the supporting U.B.

34 PB

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 03

HOLLOW CORE FLOORS BEARING DETAILS

BEARINGS ON MASONRY

Finishes

Nominal bearing t / 2 - 10 mm

t Wall thickness t 190

SIDE BEARING

Where required by Building Regulations for sound insulation.

Finishes

Continuous wet mortar by builder to take up camber

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HOLLOW CORE FLOORS BEARING DETAILS

NARROW WALL BEARING

Finishes Structural concrete infill

Nominal bearing Tie reinforcement at t / 2 - 10 mm 400 c/c in joints and (Min. 65 mm) troughs provided in Wall thickness 1200 wide units t < 190 t (Min. 140 mm)

N.B. In order to satisfy the tolerances in this situation, this detail is only recommended where a full bearing is available at the other end of the slab.

NARROW BEARING ON STEELWORK

Finishes Structural concrete infill

Nominal bearing Tie reinforcement at t / 2 - 10 mm 400 c/c in joints and troughs provided in 1200 wide units Wall thickness t 150 t (Min. 140 mm)

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 03

HOLLOW CORE FLOORS BEARING DETAILS

END SLOTS IN UNITS

Slots may be provided in slab ends for the purpose of tying into the structure for nominal continuity or disproportionate collapse Finishes Structural concrete infill

TRIMMING OPENINGS

M.S.Trimmer. Fire protection, where necessary by General Contractor.

Finishes

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SOLID COMPOSITE FLOORS UNIT PROFILES

Solid composite construction utilises the advantages of a prestressed precast element acting compositely with an in-situ structural topping, combining the benefits of precast and in-situ construction.

These benefits are: • Reduced Construction Depths • Speed of Erection • Elimination of Shuttering • Minimal Propping • Fire Resistance • Flexibility of Architectural and Engineering design

75mm unit with 50, 75, 100 or 125mm composite material

100mm unit with 50, 100, 150 or 200mm composite material

1200mm Nominal Width

To view load span tables please go to page 21

A SUSTAINABLE FUTURE...

The inherent thermal mass properties of concrete can help to regulate temperature fluctuations, ensuring that indoor environments are comfortable without the use of air conditioning, providing the user with a significant cost and energy saving. Compared to air conditioning, the active Fabric Energy Storage (FES) of concrete reduces carbon dioxide emissions by up to 50%.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 03

SOLID COMPOSITE FLOORS BEARING DETAILS

SIMPLE BEARING ON TOP FLANGE OF STEELWORK

Nominal support reinforcement and/or daywork joints determined by general layout and site operation.

40 mm Min. bearing

SLAB COMPOSITE WITH SUPPORTING BEAM

Flange reinforcement and shear studs as required by steelwork design

40 mm Min. bearing

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 COMPOSITE STEEL BEAM DESIGN

Composite steel beam design incorporating Hollow Core or solid slabs provides a structural and cost efficient solution for steel frames. It reduces total tonnage of steel beams by up to 40% and also reduces the number of components to be erected.

Definition Composite steel beam design is the use of Hollow Core or solid slabs together with in-situ infill in conjunction with welded studs onto steel beams. This enables the slabs and beams to act compositely together, enhancing the load capacity of the steel beams.

DESIGN CONSIDERATIONS

1. SHEAR STUD CAPACITY

PRD = 0.8 fu (d2/4) / gv or

PRD = 0.29 aßd2 fcpEcp / gv

Whichever is the lesser.

-0.33 ø fy 300 40 *1000+2.5g 16 460 s fcu a = 0.2 ( h/d+1) h = height of the stud.

d = is the diameter of the shank of the stud.

fu = is the specified ultimate tensile strength of the material of the stud but not greater than 500 N/mm2. ß = a factor which takes into account the gap width g (mm) and is given as 0.5 (g/70+1) ² 1.0 and g ³ 30mm.

 = a factor which takes into account the diameter ø of transverse high tensile tie steel (grade 460) and is given by 0.5 (ø / 20+1) ² 1.0 and ø ³ 8mm.

 = transverse joint factor = 0.5 (w / 600+1), w = width of hollow core unit.

fcp = average concrete cylinder strength = 0.8 x average cube strength of the in-situ and precast concrete.

Ecp = average value of elastic modulus of the insitu and precast concrete.

gv = partial safety factor for shear stud.

2. EFFECTIVE WIDTH OF COMPRESSION AREA

-0.33 ø fy 300 40 Beff = *1000+2.5g 16 460 s fcu

ø = transverse reinforcement diameter

fcu = concrete strength s = bar spacing

fy = reinforcement strength g = gap

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 04

DESIGN CONSIDERATIONS

Beff

Insitu Concrete Shear Stud Hollow Core Slab

D slab

P. N. A.

D Transverse Reinforcement

Steel Beam

Rc = 0.45 x fcu; beff x D slab

P. N. A.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BUILDING REGULATIONS

PART A MASONRY BUILDINGS CONSTRUCTION SOLUTIONS

The Building Regulations Part A December 2004 introduced a system of classification of buildings to reflect the risk of disproportionate collapse probabilities. The following solutions give guidance as to the details required for each of the main frame options related to Hollow Core slabs.

Class 1 and 2A Buildings Flats, apartments and other residential buildings not exceeding 4 storeys. Provision of effective anchorage to satisfy Building Regulations from ‘building in’ of Hollow Core units.

Class 2B Buildings (Horizontal Ties only + notional removal) Flats, apartments and other residential buildings greater than 4 storeys but not exceeding 15 storeys. All design and details for horizontal tying in accordance with BS5628 Part 1 and BS8110 Part 1.

DETAILS FOR TYPE 1 & 2A

EXTERNAL EXTERNAL LOAD BEARING CAVITY WALL DETAIL NON-LOAD BEARING CAVITY WALL DETAIL

Bison precast Bison precast Bison precast Bison precast concrete Hollow concrete Hollow concrete Hollow concrete Hollow Core slab unit Core slab unit Core slab unit Core slab unit Continuous wet Continuous wet mortar, by builder, mortar, by builder, Solid block wall Solid block wall to take up camber to take up camber

Solid block wall Solid block wall

100 mm min. 100 mm min. 100 mm min. 100 mm min.

Reinforcement to suit Reinforcement to suit Structural Engineer’s Structural Engineer’s design design Reinforcement to suit Reinforcement to suit Structural Engineer’s Structural Engineer’s 10 mm dia. high yield 10 mm dia. high yield In-situ In-situ design design ‘U’ bar per trough ‘U’ bar per trough concrete stitch concrete stitch

In-situ In-situ concrete42 stitch concrete stitch Bison precast Bison precast concrete Hollow concrete Hollow Core slab Core slab For EXTENSIVE TECHNICALBison precast concrete DETAILS Bison precast PLEASE concrete VISIT our website: www.bison.co.uk 150 mm wide perforated150 mm wide perforated Hollow Core slab unit Hollow Core slab unit pocket along the edge pocket along the edge Continuous wet Continuous wet with perforated troughs with perforated troughs of slab unit at 1200 mmof slab unit at 1200 mm mortar, by builder, mortar, by builder, for tying requirements for tying requirements centreswith 10 mm dia.centreswith 10 mm dia. to take up camber to take up camber ‘U’ bar per socket ‘U’ bar per socket

140 mm 140 mm 140 mm 140 mm

SECTION 05

PART A MASONRY BUILDINGS CONSTRUCTION SOLUTIONS

Class 2B Buildings (Horizontal and Vertical Ties) Flats, apartments and other residential buildings greater than 4 storeys but not exceeding 15 storeys. All design and details for horizontal and vertical tying in accordance with BS5628 Part 1and BS8110 Part 1 for Class 2B and Class 3 Buildings.

Class 3 Buildings (Horizontal and Vertical Ties + Risk Assessment) All buildings defined above as Class 2A and 2B that exceed the limits on area and/or number of storeys. Bison precast Bison precast Bison precast Bison precast concrete Hollow All concretedesign Hollow and details for horizontal and vertical tying in accordance concretewith BS5628 Hollow Part 1andconcrete BS8110 Hollow Part 1 for Core slab unit Core slab unit Core slab unit Core slab unit Class 2B and Class 3 Buildings. Continuous wet Continuous wet mortar, by builder, mortar, by builder, Solid block wall Solid block wall to take up camber to take up camber

Solid block wall Solid block wall

100 mm min. 100 mm min. 100 mm min. 100 mm min.

EXTERNAL EXTERNAL LOAD BEARING CAVITY WALL DETAIL NON-LOAD BEARING CAVITY WALL DETAIL

In-situ In-situ concrete stitch concrete stitch Bison precast Bison precast concrete Hollow concrete Hollow Core slab Core slab Bison precast concrete Bison precast concrete 150 mm wide perforated 150 mm wide perforated Hollow Core slab unit Hollow Core slab unit pocket along the edge pocket along the edge Continuous wet Continuous wet with perforated troughs with perforated troughs of slab unit at 1200 mm of slab unit at 1200 mm mortar, by builder, mortar, by builder, for tying requirements for tying requirements centreswith 10 mm dia. centreswith 10 mm dia. to take up camber to take up camber ‘U’ bar per socket ‘U’ bar per socket

140 mm 140 mm 140 mm 140 mm

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BUILDING REGULATIONS

PART A CONCRETE FRAMED BUILDINGS CONSTRUCTION SOLUTIONS

Class 2B Buildings (Horizontal and Vertical Ties) Flats, apartments and other residential buildings greater than 4 storeys but not exceeding 15 storeys.

Class 3 Buildings + (Risk Assessment) All buildings defined above as Class 2A and 2B that exceed the limits on area and/or number of storeys. All design and details for horizontal and vertical tying in accordance with BS8810 Part 1 for Class 2B and Class 3 Buildings.

TYPICAL SECTION TYPICAL SECTION INTERNAL WALL (LOAD BEARING) EXTERNAL WALL (LOAD BEARING)

Grout joint Grout joint Reinforcement to suitReinforcement to suit Grout joint Grout joint Reinforcement to suitReinforcement to suit Structural Engineer’sStructural Engineer’s Structural Engineer’sStructural Engineer’s In-situ In-situ design design In-situ In-situ design design concrete infill concrete infill concrete infill concrete infill

Wire loop Wire loop connections connections

Bison precast concreteBison precast concrete 10 mm dia. 10 mm dia. 10 mm dia. 10 mm dia. Hollow Core slab Hollow Core slab ‘U’ bar in troughts ‘U’ bar in troughts ‘U’ bar in ‘U’ bar in troughts troughts

Bison precast concreteBison precast concrete Hollow Core slab Hollow Core slab

175 mm 175 mm 150 mm 150 mm

Wire loop Wire loop connections connections

Bison precast concreteBison precast concrete 150 mm wide perforated150 mm wide perforated Hollow Core slab Hollow Core slab pocket along the edgepocket along the edge Bison precast concreteBison precast concrete of slab unit at 1200 mmof slab unit at 1200 mm Hollow Core slab Hollow Core slab centre swith 10 mm dia.centre swith 10 mm dia. ‘U’ bar per socket ‘U’ bar per socket

175 mm 175 mm 150 mm 150 mm 44

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 05

Grout joint Grout joint Reinforcement to suit Reinforcement to suit Grout joint Grout joint Reinforcement to suit Reinforcement to suit Structural Engineer’s Structural Engineer’s Structural Engineer’s Structural Engineer’s In-situ In-situ PART A designCONCRETEdesign FRAMEDIn-situ BU ILDINGSIn-situ design design concrete infill concrete infill concrete infill concrete infill CONSTRUCTION SOLUTIONS Wire loop Wire loop connections connections

Bison precast concrete Bison precast concrete10 mm dia. 10 mm dia. 10 mm dia. 10 mm dia. Hollow Core slab Hollow Core slab ‘U’ bar in troughts ‘U’ bar in troughts ‘U’ bar in ‘U’ bar in troughts troughts

Bison precast concrete Bison precast concrete Hollow Core slab Hollow Core slab

175 mm 175 mm 150 mm 150 mm

TYPICAL SECTION TYPICAL SECTION INTERNAL WALL (NON-LOAD BEARING) EXTERNAL WALL (NON-LOAD BEARING)

Grout joint Grout joint Reinforcement to suit Reinforcement to suit Grout joint Grout joint Reinforcement to suit Reinforcement to suit Structural Engineer’s Structural Engineer’s Structural Engineer’s Structural Engineer’s In-situ In-situ design design In-situ In-situ design design concrete infill concrete infill concrete infill concrete infill

Wire loop Wire loop connections connections

Bison precast concrete Bison precast concrete 150 mm wide perforated 150 mm wide perforated Hollow Core slab Hollow Core slab pocket along the edge pocket along the edge Bison precast concrete Bison precast concreteof slab unit at 1200 mm of slab unit at 1200 mm Hollow Core slab Hollow Core slab centre swith 10 mm dia. centre swith 10 mm dia. ‘U’ bar per socket ‘U’ bar per socket

175 mm 175 mm 150 mm 150 mm

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BUILDING REGULATIONS

PART A STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS

Class 1 and 2A Buildings Apartments and other residential buildings not exceeding 4 storeys. This type of building uses the friction and built-in details to achieve tying requirements.

TYPICAL SECTION EXTERNAL STEELWORK DETAILS

In-situ In-situ In-situ Continuous wet mortar Continuous wet mortar Continuous wet mortar concrete stitch concrete stitch concrete stitch by Builder, to take up by Builder, to take up by Builder, to take up camber camber camber

Bison precast Bison precast Bison precast Bison precast Bison precast Bison precast Bison precast Bison precast Bison precast concrete Hollow concrete Hollow concrete Hollow concrete Hollow concrete Hollow concrete Hollow concrete Hollow concrete Hollow concrete Hollow Core slab unit Core slab unit Core slab unit Core slab unit Core slab unit Core slab unit Core slab unit Core slab unit Core slab unit

In-situ concrete stitch In-situ concrete stitch In-situ concrete stitch

150 mm wide perforated 150 mm wide perforated 150 mm wide perforated Reinforcement to suit Reinforcement to suit Reinforcement to suit pocket along the edge pocket along the edge pocket along the edge Structural Engineer’s Structural Engineer’s Structural Engineer’s of slab unit at 1200 mm of slab unit at 1200 mm of slab unit at 1200 mm design welded to top design welded to top design welded to top centreswith 10 mm dia. centreswith 10 mm dia. centreswith 10 mm dia. In-situ concrete stitch In-situ concrete stitch In-situ concrete stitch flange of steel beam at flange of steel beam at flange of steel beam at ‘U’ bar per socket ‘U’ bar per socket ‘U’ bar per socket trough bottom trough bottom trough bottom Shear stud Shear stud Shear stud

Bison precast Bison precast Bison precast concrete Hollow concrete Hollow concrete Hollow In-situ concrete stitch In-situ concrete stitch In-situ concrete stitch Core slab unit Core slab unit Core slab unit

Bison precast concrete Bison precast concrete Bison precast concrete Bison precast Bison precast Bison precast Reinforcement to suit Reinforcement to suit Reinforcement to suit Hollow Core slab units Hollow Core slab units Hollow Core slab units concrete Hollow concrete Hollow concrete Hollow Structural Engineer’s 46Structural Engineer’s Structural Engineer’s with preformed troughs with preformed troughs with preformed troughs Core slab unit Core slab unit Core slab unit design design design for tying requirements for tying requirements for tying requirements Continuous wet Continuous wet Continuous wet For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk mortar, by Builder, mortar, by Builder, mortar, by Builder, to take up camber to take up camber to take up camber

SECTION 05

PART A STEEL FRAMED BUILDINGS

In-situ In-situ Continuous wet mortar Continuous wet mortar CONSTRUCTION SOLUTIONSconcrete stitch concrete stitch In-situ by Builder, to take up by Builder, to take up Continuous wet mortar concrete stitch camber camber by Builder, to take up Class 2B Buildings (Horizontal and Vertical Ties) camber Flats, apartments and other residential buildings greater than 4 storeys but not exceeding 15 storeys.

Class 3 Buildings (Horizontal and Vertical Ties + Risk Assessment)

Bison precast All buildings defined Bisonabove precast as Class 2A and 2B that exceed theBison limits precast on area and/or number ofBison storeys. precast Bison precast Bison precast Bison precast concrete Hollow concrete Hollow Bison precast concrete Hollow concrete Hollow Bison precast concrete Hollow concrete Hollow concrete Hollow Core slab unit Core slab unit concrete Hollow Core slab unit Core slab unit concrete Hollow Core slab unit Core slab unit Core slab unit Core slab unit Core slab unit These types of buildings require horizontal and vertical ties which are provided by the steel frame. Additionally the floors must be tied to the steelwork at the perimeter and to each other for internal supports. Additional internal tying of the floor to the steelwork is required where the frame is used for bracing.

TYPICAL SECTION EXTERNAL STEELWORK DETAILS

In-situ concrete stitch In-situ concrete stitch In-situ concrete stitch

150 mm wide perforated 150 mm wide perforated 150 mm wide perforated Reinforcement to suit Reinforcement to suit pocket along the edge pocket along the edge Reinforcement to suit pocket along the edge Structural Engineer’s Structural Engineer’s of slab unit at 1200 mm of slab unit at 1200 mm Structural Engineer’s of slab unit at 1200 mm design welded to top design welded to top centreswith 10 mm dia. centreswith 10 mm dia. design welded to top centreswith 10 mm dia. In-situ concrete stitch In-situ concrete stitch flange of steel beam at flange of steel beam at ‘U’ bar per socket ‘U’ bar per socket In-situ concrete stitch flange of steel beam at ‘U’ bar per socket trough bottom trough bottom trough bottom Shear stud Shear stud Shear stud

Bison precast concrete Bison precast concrete Bison precast Bisonconcrete precast Bison precast Bison precast Reinforcement to suit Reinforcement to suit Reinforcement to suit Hollow Core slab units Hollow Core slab units Hollow Core slabconcrete units Hollow concrete Hollow concrete Hollow Structural Engineer’s Structural Engineer’s Structural Engineer’s with preformed troughs with preformed troughs with preformedCore troughs slab unit Core slab unit Core slab unit design design design for tying requirements for tying requirements for tying requirements Continuous wet Continuous wet Continuous wet mortar, by Builder, mortar, by Builder, mortar, by Builder, to take up camber to take up camber to take up camber

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BUILDING REGULATIONS

PART E CONSTRUCTION SOLUTIONS

The Building Regulations Part E:2003 and the subsequent amendment May 2004 give guidance to the requirements for the resistance to the passage of sound. For new build attached dwellings, two approaches may be made. Part E allows the developer to choose between Pre Completion Testing (PCT) or, if available, a Robust Detail (RD) may be used by registering plots with Robust Details Ltd. The Pre Completion Testing (PCT) and the Robust Detail (RD) requirements are given below.

Building Regulations Approved Document Part E

Airborne sound: New Build Change of use

Walls min 45dB min 43dB

Floors min 45 dB min 43dB termed DnT,w +Ctr

Impact sound:

Floors max 62 dB max 64 dB termed LnT,w

Robust Detail requirements (new build attached dwellings only)

Airborne sound: Min/Max Mean

Walls min 47dB min 50dB

Floors min 47 dB termed DnT,w +Ctr

Impact sound:

Floors max 60 dB max 57 dB termed LnT,w

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 05

PART E CONSTRUCTION SOLUTIONS

TYPICAL SOUND ATTENUATION DETAIL

Min. 100mm thick blockwork medium density (1350-1600kg/m3) Yelofon E-strip acoustic edge strip Nominal 8mm thick parge coat 65mm thick sand/cement screed or 40mm thick proprietary screed, Flexible cavity closer nominal 80kg/m2 mass per unit area

10mm Yelofon HD10+ 200mm

100mm min.

200mm deep Bison Hollow Core slab units (300kg/m2)

Gypsum-based board (nominal 8kg/m2) mounted on dabs on cement/sand render (nominal 8mm) with scratch finish

100 75 100

275mm min.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BUILDING REGULATIONS

PART E MASONRY BUILDINGS CONSTRUCTION SOLUTIONS

ROBUST DETAILS SEPARATING FLOOR - CONCRETE E-FC-1

1 2 3 4 PRECAST CONCRETE HOLLOW CORE FLOOR SLAB, SCREED

1. floating floor See section 4 (Robust Details Handbook) for suitable floating floor treatment.

2. Screed 40mm (min) screed directly applied to Hollow Core floor slabs - sand/cement or proprietary screed nominal 80 kg/m2 mass per unit area, see Appendix A (Robust Details Handbook).

3. Structural floor 150mm (min) precast concrete Hollow Core floor slab - 300kg/m2 mass per unit area.

4. cEiling See section 3 (Robust Details Handbook) for suitable ceiling treatment.

ROBUST DETAILS SEPARATING FLOOR - CONCRETE E-FC-4

1 2 3 4 PRECAST CONCRETE HOLLOW CORE FLOOR SLAB, SCREED LAID ON ISORUBBER RESILIENT LAYER

1. Screed 65mm (min) sand/cement screed, or 40mm (min) proprietary screed, nominal 80kg/m2 mass per unit area.

2. rESilient layer 6mm IsoRubber layer with IsoEdge flanking strip.

3. Structural floor 150mm (min) precast concrete Hollow Core floor slab - 300kg/m2 mass per unit area.

4. cEiling See section 3 (Robust Details Handbook) for suitable ceiling treatment which is dependent on floorplank depth and supporting wall density.

The requirements for a robust detail are taken from the Robust Details Part E Handbook. The latest requirements should always be sought from Robust Details Ltd.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 05

PART E MASONRY BUILDINGS CONSTRUCTION SOLUTIONS

ROBUST DETAILS SEPARATING FLOOR - CONCRETE E-FC-5

1 2 3 4 PRECAST CONCRETE HOLLOW CORE FLOOR SLAB, SCREED LAID ON ISORUBBER RESILIENT LAYER

1. Screed 65mm (min) sand/cement screed, or 40mm (min) proprietary screed, nominal 80kg/m2 mass per unit area.

2. rESilient layer YELOfon HD10+ with E-strip perimeter edging and J-strip tape for jointing.

3. Structural floor 150mm (min) precast concrete Hollow Core floor slab - 300kg/m2 mass per unit area.

4. cEiling See section 3 (Robust Details Handbook) for suitable ceiling treatment which is dependent on floorplank depth and supporting wall density.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 335 mm min. 102 100 100 30 min. 11 275 mm min. 9 1 12 30 100 74 100 30 10 min. min. 2 13 1 11 14 2 12 3 13

3 150 200 Bison Units Bison Units 4 150 min. 100 min. 150 200

Bison Units Bison Units 5

150 min. 100 min. 6

15 4 14 7 16 5 15 8 17 6 16 9 18 7 17 10 8 19 BUILDING REGULATIONS

PART E STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS

TYPICAL DETAIL MASONRY WALLS TYPICAL DETAIL STUD WALLS INTERNAL SEPARATING FLOOR AND WALL INTERNAL SEPARATING FLOOR AND WALL

335 mm min. 335 mm min. 102 100 100 30 102 100 100 30 min. 11 min. 11 275 mm min. 9 275 mm min. 9 1 12 1 12 30 100 74 100 30 10 30 100 74 100 30 10 min. min. min. min. 2 13 2 1 11 1 11 13 14 2 12 2 12 14 3 13 3 13 150 200 3 3 150 200 Bison Units Bison Units Bison Units Bison Units 4 4 150 min. 100 min. 150 min. 100 min. 150 200 150 200 Bison Units Bison Units 5 Bison Units Bison Units 5 150 min. 100 min. 6 150 min. 100 min. 6

15 4 14 4 14 15 7 16 7 5 15 5 15 16 8 17 8 6 16 6 16 17 9 18 9 7 17 7 17 18 10 10 8 8 19 19

1 Yelofon E-strip acoustic edge strip (by Cellecta). 10 Nominal 8mm thick parge coat (by Lafarge).

2 Minimum 40mm thick ‘Gyvlon’ Screed (by Lafarge). 11 12.5mm thick Echeck wallboard (by Lafarge).

3 Minimum 10mm Yelofon HD 10+ (by Cellecta). 12 Skirting board.

4 Min. 12.5mm thick ‘Lafarge’ Gypsum based ceiling 13 Yelofon J-strip acoustic jointing tape (by Cellecta). 2335 mm min. board (min. 8kg/m ) suspended from a proprietary 102 100 100 30 14 150 or 200mm min. deep ‘Bison Hollowmin. Core 11 support system. 275 mm min. 9 floor units’ (300kg/m2). 1 12 30 100 74 100 30 10 5 Acoustic quilt (bymin. Rockwool). min. 15 Grouted void between2 P.C. units. 1 11 13 6 Soft joint. 16 12.5mm thick Echeck wallboard (by Lafarge) 2 12 14 7 Compressible filler board. encasement to steelwork. Restrained via 3 13 proprietary framing system. 8 Proprietary sliding brick anchor system.

3 150 200 17 12.5mm thick Echeck wallboard (by Lafarge) 9 Min. 100mm thick blockwork (medium density) Bison Units Bison Units tacken up to u/side4 of floor providing 1.0 hour

3 150 min. 100 min. 1800 -2300g/m . 150 200 fire protection to steelwork. Bison Units Bison Units 5

150 min. 100 min. 6

4 14 15 7 52 5 15 16 8 6 16 17 For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk9 7 17 18 10 8 19 335 mm min. 102 100 100 30 min. 11 275 mm min. 9 1 12 30 100 74 100 30 10 min. min. 2 13 1 11 14 2 12 3 13

3 150 200 Bison Units Bison Units 4 150 min. 100 min. 150 200

Bison Units Bison Units 5

150 min. 100 min. 6

15 4 14 7 16 5 15 8 17 6 16 9 18 7 17 10 8 19 SECTION 05

PART E STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS

TYPICAL DETAIL MASONRY WALLS TYPICAL DETAIL MASONRY WALLS EXTERNAL WALL AND SEPARATING FLOOR EXTERNAL WALL AND SEPARATING FLOOR

335 mm min. 335 mm min. 102 100 100 30 102 100 100 30 min. 11 min. 11 275 mm min. 9 275 mm min. 9 1 12 1 12 30 100 74 100 30 10 30 100 74 100 30 10 min. min. min. min. 2 13 2 13 1 11 1 11 14 14 2 12 2 12 3 13 3 13 150 200 3 150 200 3 Bison Units Bison Units Bison Units Bison Units 4 4 150 min. 100 min. 150 200 150 min. 100 min. 150 200

Bison Units Bison Units 5 Bison Units Bison Units 5 150 min. 100 min. 150 min. 100 min. 6 6

15 15 4 14 4 14 7 16 7 16 5 15 5 15 8 17 8 17 6 16 6 16 9 18 9 18 7 17 7 17 10 10 19 8 8 19

1 Yelofon E-strip acoustic edge strip (by Cellecta). 13 Skirting board.

2 Minimum 40mm thick ‘Gyvlon’ Screed (by Lafarge). 14 Min. 10mm Yelofon HD10+ (by Cellecta).

3 Yelofon J-strip acoustic jointing tape (by Cellecta). 15 Min. 12.5mm thick ‘Lafarge’ Gypsum based ceiling board (min. 8kg/m2) suspended from a proprietary 4 Flexible cavity closer. support system. 335 mm min. 102 100 100 30 5 Acoustic quilt (by Rockwool).min. 11 275 mm min. 9 16 150 or 200mm min. deep ‘Bison Hollow Core 6 Compressible1 filler board. 12 floor units’ (300kg/m2). 30 100 74 100 30 10 min. min. 2 1 11 7 Soft joint. 13 17 2 No. layers of Echeck wallboard (by Lafarge) encasement to steelwork. Restrained via 8 External leaf. 14 2 12 proprietary framing system. 3 13 9 Proprietary sliding brick anchor system. 18 12.5mm thick Echeck wallboard (by Lafarge)

3 150 200 10 Proprietary wall ties in accordance with approved taken up to u/side of floor providing 1.0 hour Bison Units Bison Units document4 ‘E’ (2003), section 2. fire protection to steelwork. 150 min. 100 min. 150 200

Bison Units Bison Units 11 Nominal5 8mm thick parge coat (by Lafarge). 19 Min. 100mm thick blockwork (medium density) 3

150 min. 100 min. 1800 -2300g/m . 12 12.5mm6 thick Echeck wallboard (by Lafarge).

4 14 15 7 53 5 15 16 8 6 16 17 For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 9 7 17 18 10 8 19 1 9 1 9 2 10 2 10 3 11 3 11 4

150 200 5 150 200

Bison Units Bison Units 6 Bison Units Bison Units 150 min. 100 min. 150 min. 100 min. 7

4 12 8 12 5 13 13 6 14 14 7 15

8 15 16 17 BUILDING REGULATIONS 18

PART E STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS

TYPICAL DETAIL STUD WALLS TYPICAL DETAIL STUD WALLS INTERNAL SEPARATING FLOOR AND WALL INTERNAL WALL AND SEPARATING FLOOR

1 9 1 1 9 9 1 9 2 10 2 2 10 10 2 10 3 11 3 3 11 11 3 11 4 4 150 200 150 200 5 150 200 5 150 200 Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units 6 6 150 min. 100 min. 150 min. 100 min. 150 min. 100 min. 150 min. 100 min. 7 7

4 12 4 8 12 12 8 12

5 13 5 13 13 13

6 14 6 14 14 14

7 7 15 15

8 15 8 15 16 16

17 17

18 18

1 Yelofon E-strip acoustic edge strip (by Cellecta). 9 RSP 38 modified Lafarge stud system studs. Two 50mm C studs at 600mm centres. 2 Minimum 40mm thick ‘Gyvlon’ Screed (by Lafarge). Facings. 3 Minimum 10mm Yelofon HD 10+ (by Cellecta). 2 layers Lafarge 15mm dBcheck wallboard both sides. 4 10mm Aerofoil isolation layer. Insulation. 3 5 Min.1 12.5mm thick ‘Lafarge’ Gypsum based9 ceiling 50mm glass1 mineral wool density 19.5 kg/m9. board (min. 8kg/m2) suspended from a proprietary 2 10 10 Timber sole2 plate. 10 support system. 3 11 11 Yelofon J-strip3 acoustic jointing tape (by Cellecta).11 6 Acoustic quilt. 12 150 or 200mm4 min. deep Bison Hollow Core 7 Deflection Tolerance. 2 150 200 floor units5 (300kg/m ). 150 200 Bison Units Bison Units 8 RSP 38 modified Lafarge stud system. Bison Units Bison Units 13 Grouted void6 between P.C. units. 150 min. 100 min. 150 min. 100 min. 7 14 12.5mm thick Echeck wallboard (by Lafarge) 4 12 encasement8 to steelwork. Restrained via 12 5 13 proprietary framing system. 13

6 14 15 Deflection head detail. 14 7 15 8 15 16 54 17 18

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk 1 9 1 9 2 10 2 10 3 11 3 11 4

150 200 5 150 200

Bison Units Bison Units 6 Bison Units Bison Units 150 min. 100 min. 150 min. 100 min. 7

4 12 8 12 5 13 13 6 14 14 7 15 8 15 16 17 SECTION18 05

PART E STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS

TYPICAL DETAIL STUD WALLS TYPICAL DETAIL STUD WALLS EXTERNAL SEPARATING FLOOR AND WALL EXTERNAL WALL AND SEPARATING FLOOR

1 9 1 1 9 9 1 9 2 10 2 2 10 10 2 10 3 11 3 3 11 11 3 11 4 4 150 200 150 200 150 200 5 150 200 5 Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units 6 6 150 min. 100 min. 150 min. 100 min. 150 min. 100 min. 150 min. 100 min. 7 7

4 12 4 8 12 12 8 12

5 13 5 13 13 13

6 14 6 14 14 14

7 7 15 15

8 15 8 15 16 16

17 17

18 18

1 Tyvek breather membrane 12.5 moisture resistant 10 Skirting board. wallboard and 36mm polyfoam plus. 11 Minimum 40mm thick ‘Gyvlon’ Screed (by Lafarge). 2 Yelofon E-strip acoustic edge strip (by Cellecta). 12 Minimum 10mm Yelofon HD 10+ (by Cellecta). 3 Yelofon J-strip acoustic jointing tape (by Cellecta). 13 150 or 200mm min. deep Bison Hollow Core 4 Timber sole plate. floor units (300kg/m2). 1 9 1 9 5 10mm Aerofoil isolation layer. 14 Min. 12.5mm thick ‘Lafarge’ Gypsum based ceiling 2 10 2 10 board (min. 8kg/m2) suspended from a proprietary 6 Flexible cavity closer. 3 11 3 11 support system. 7 Acoustic4 quilt (by Rockwool). 15 2No. layers of Echeck wallboard (by Lafarge) 150 200 8 External5 cladding 102mm brick or 100mm 150 200 encasement to steelwork. Restrained via Bison Units Bison Units Bison Units Bison Units block6 + 16mm render. proprietary framing system. 150 min. 100 min. 150 min. 100 min. 9 Lafarge7 stud system studs. 16 Deflection tolerance. CS90/Y Lafarge C studs at 600mm centres. 4 12 8 12 17 Deflection head detail. Facings. 5 13 13 1 layer Lafarge 12.5mm firecheck wallboard 18 Lafarge stud system (see above). 6 14 on 1 layer 12.5mm vapourcheck wallboard.14 7 Insulation. 15 90mm rockwool flex. 8 15 16 17 55 18

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 7 102 100 150 1 8 8 2 9 1 9 3 10 2 10 3 150 200 4 150 200 Bison Units Bison Units Bison Units Bison Units 5 150 min. 100 min. BUILDING REGULATIONS 150 min. 100 min. 4 11 6 11 5 12 7 12 6 13 13 PART E CONCRETE WALLS 14 CONSTRUCTION SOLUTIONS 175 mm 150 mm

TYPICAL DETAIL SECTION TYPICAL DETAIL SECTION A TYPICAL INTERNAL SEPARATING WALL A TYPICAL INTERNAL SEPARATING WALL

7 102 100 150 7 102 100 150 1 8 1 8 8 8 2 9 2 1 9 9 1 9 3 10 3 2 10 10 2 10 3 3 150 200 150 200 150 200 4 150 200 4 Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units Bison Units 5 5 150 min. 100 min. 150 min. 100 min. 150 min. 100 min. 150 min. 100 min. 4 11 4 6 11 11 6 11

5 12 5 7 12 12 7 12

6 13 6 13 13 13 14 14

175 mm 175 mm 150 mm 150 mm

1 Yelofon E-strip acoustic edge strip (by Cellecta). 8 Dry pack mortar.

2 Minimum 40mm thick ‘Gyvlon’ Screed (by Lafarge). 9 Skirting board. 7 102 100 150

3 Minimum1 10mm Yelofon HD 10+ (by 8Cellecta). 10 Yelofon J-strip acoustic jointing tape (by Cellecta).8

4 Min.2 12.5mm thick ‘Lafarge’ Gypsum9 based ceiling 11 150 or 200mm1 min. deep ‘Bison Hollow Core9 board (min. 8kg/m2) suspended from a proprietary floor units (300kg/m2). support3 system. 10 2 10 12 In-situ concrete infill. 3 5 Acoustic sealant. 13 3mm Plaster skim on 150 200 4 150 200

6 175mm thick concrete wall. Bison Units Bison Units 15mm Lafarge wallboard Bison Units Bison Units 12mm Metal5 furring channel on dabs 7 3mm Plaster skim on 150 min. 100 min. 150 min. 100 min. 35mm cavity with 15mm4 Lafarge wallboard 11 6 11 25mm mineral fibre. 12mm Metal furring channel on dabs 5 12 7 12 35mm cavity with 25mm6 mineral fibre. 13 13 14

175 mm 150 mm

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk 7 102 100 150 1 8 8 2 9 1 9 3 10 2 10 3 150 200 4 150 200 Bison Units Bison Units Bison Units Bison Units 5 150 min. 100 min. SECTION150 min. 05100 min. 4 11 6 11 5 12 7 12 6 PART E CONCRETE13 WALLS 13 14 CONSTRUCTION SOLUTIONS

175 mm 150 mm TYPICAL DETAIL SECTION TYPICAL DETAIL SECTION THROUGH A TYPICAL EXTERNAL WALL THROUGH A TYPICAL EXTERNAL WALL

5 12 5 7 12 12 7 12

6 13 6 13 13 13 14 14

175 mm 175 mm 150 mm 150 mm

1 Yelofon E-strip acoustic edge strip (by Cellecta). 8 3mm Plaster skim on 15mm Lafarge wallboard 2 Yelofon J-strip acoustic jointing tape (by Cellecta). 12mm Metal furring channel on dabs 7 3 Dry pack102 mortar.100 150 35mm cavity with 8 25mm mineral fibre. 1 8 4 Flexible cavity closer. 2 9 1 9 9 Skirting board. 5 In-situ concrete infill. 3 10 2 10 10 Minimum 40mm thick ‘Gyvlon’ Screed (by Lafarge). 6 150mm concrete wall. 3 11 Minimum 10mm Yelofon HD 10+ (by Cellecta). 7 3mm Plaster skim on 150 200 15mm4 Lafarge wallboard 150 200 12 150 or 200mm min. deep Bison Hollow Core Bison Units Bison Units Bison Units Bison Units floor units (300kg/m2). 12mm5 Metal furring channel on dabs 150 min. 100 min. 35mm cavity with 150 min. 100 min. 13 Min. 12.5mm thick ‘Lafarge’ Gypsum based ceiling 4 11 25mm6 mineral fibre. 11 board (min. 8kg/m2) suspended from a proprietary 5 12 7 12 support system.

6 13 13 14 Acoustic sealant. 14

175 mm 150 mm

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 TECHNICAL SPECIFICATIONS & HEALTH AND SAFETY

BISON PRECAST FLOORING SPECIFICATIONS

MANUFACTURE

1.1 Bison floors are manufactured by the long line prestressed method using slip form or extrusion techniques. The units are cast on heated steel beds within an enclosed factory environment.

1.2 The materials used in the manufacture of Bison floors comply with the relevant British Standard for that material.

1.3 An air entraining agent complying with BS EN 934-2-2001 is included in the concrete mix to improve workability.

1.4 Reinforcement is generally 5mm diameter high tensile wire or 12.5mm diameter strand complying with the requirements of B.S.5896:1980.

1.5 Bison units are sawn to length on the manufacturing bed and are supplied as standard with plain sawn ends with open cores.

DIMENSIONS

2.1 Bison units are manufactured in nominal sizes as follows : Standard nominal width of all units is 1200mm. Solid : Depth 75mm 100mm Hollow : Depth 150mm 200mm 260mm 300mm 250mm 400mm 450mm 2.2 Cross-sectional tolerances are within the limits set out in clause 6.2.8.3. of B.S. 8110:1997. Length tolerances are ± 20 mm.

2.3 Bison units will have an upward camber due to pre-stressing as described in clause 6.2.8.4. of B.S.8110:1997.

2.4 Edges are shaped to form a grout joint giving a shear key to distribute load to adjacent units. Where non-standard widths are provided the edge will be rough cut from a standard unit.

FINISHES

3.1 Concrete surface finish to soffit is Type A finish as described in clause 6.2.7.3. of B.S.8110:1997.

The soffit is suitable for the direct application of a textured paint finish where this is applied in accordance with the manufacturers instructions.

Where a plaster finish is intended it may be necessary to use a bonding agent in accordance with the instructions of the plaster manufacturer. Plaster finishes are not recommended on longer spans.

3.2 Sides and top surfaces are ‘as extruded’ as described in Table 5.5 of B.S.8110:1997.

3.3 Units may accumulate water within the cores due to exposure during the construction programme. The General Contractor should drill weep holes as necessary, or keep them clear where they are provided during manufacture.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 06

BISON PRECAST FLOORING SPECIFICATIONS

DESIGN

4.1 The design of Bison units is in accordance with the requirements and recommendations of B.S.8110:1997 “The Structural Use of Concrete.”

4.2 Load/Span capacity : The reinforcement pattern within a Bison section will vary according to the design loading specified.

4.3 Exposure Condition : The standard Bison section is suitable for a XCI exposure classification as defined in Table 3.2 of BS 8500:2002. Other exposure classes can be adopted subject to design approval from Bison Technical Department.

4.4 Fire Resistance : Fire resistance is based upon the tabulated data contained within B.S. 8110 Part 2 Section 4. Sections are available for fire periods of 1 hour or 2 hours, without the addition of further finishes.These periods of fire resistance may be further enhanced by the application of appropriate finishes.

4.5 Serviceability : The standard Bison section is designed to meet the criteria of Class 3 as set out in clause 4.1.3 of B.S.8110.1997 Designs to Class 1 and Class 2 are available if required.

4.6 Sound Insulation : The requirements of The Building Regulations are that a floor construction incorporating the use of precast concrete units should have a minimum mass which is dependent upon whether the finishes to the top surface are directly applied or are on a separating layer. The mass of Bison unit sections are given in the technical data and are net weights of standard hollow sections.

4.7 Horizontal & Vertical Ties : Ties necessary to satisfy the requirements for accidental damage should be specified by the Engineer with responsibility for the design of the overall structure in accordance with the Code of Practice.

4.8 Bearings : Level and structurally adequate bearings for Bison precast units should be provided by other contractors. These should generally be 100 mm for masonry or 75 mm for concrete or steelwork, but may be reduced in accordance with clause 5.2.3 of B.S.8110:1997.

4.9 Holes : Small holes up to 60 mm diameter may be drilled on site through the Hollow Cores, care being taken to avoid damage to the reinforced ribs. Larger holes may be cut subject to the design capacity of the slab.

4.10 Grouting : Joints between units should be grouted with a 30 N/mm2 concrete using a 6 mm nominal aggregate size.

4.11 Propping : Where the slab design requires site propping, this should be carried out in strict accordance with the Bison drawings.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 TECHNICAL SPECIFICATIONS & HEALTH AND SAFETY

BISON PRECAST FLOORING SPECIFICATIONS

QUALITY ASSURANCE

Bison operates a Quality Management System which complies with the requirements of ISO 9001: 2000 for the following scope: design, manufacture and erection of ancillary cube products (including reinforced and normally reinforced concrete). Prestressed floor units are subject to end product testing. Prestressed and ancillary concrete is subject to full design approval, traceable to current codes of practise statutory/regulatory requirements.

All Bison U.K. factories have been assessed by the British Standards Institution (B.S.I.) and awarded Certificates of Assessed Capability under the scheme covering Quality Assurance for the manufacture of precast concrete floors.

As a customer, you can be sure that all aspects of our production, design detailing and quality control have been independently inspected and have achieved the high level of competence and quality required by the British Standards Institution.

The company maintains a policy of continuous development, and reserves the right to change specification and details without prior notice.

FM 00011

BISON PRECAST FLOORING HEALTH & SAFETY

This information must be read in conjunction with:

• Health , Safety & Welfare Attendances (supply & erect only).

• C.O.S.H.H information sheet – Precast Elements.

• Unit weight table.

• Information sheet: Lifters & Chains, supplier hire or purchase.

• Technical Information Sheet, Handling & Fixing Instructions for:

Sheet No. TI/304/10 Hollow Core

Sheet No. TI/304/11 Solid Composite Precast Elements

Sheet No. TI/304/12 Prestressed Housebeam & Deepbeam

Sheet No. TI/304/13 Bison Precast Stairs & Landings

Sheet No. TI/304/15 Floor products with cast-in lifters

Sheet No. TI/304/16 Trailasafe®

The Bison website www.bison.co.uk contains detailed information and data sheets on all products. Alternatively call the Health & Safety Department at our Burton office Tel 01283 495000 . 60

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 06

BISON PRECAST FLOORING HEALTH AND SAFETY

Safety Do’s & Don’ts The do’s & don’ts listed below are by no means fully exhaustive-you should also refer to the current issue of the Precast Flooring Federation Code of Practice available on Tel 0116 253 6161.

• Do not alter the product without written permission from Bison Design Office, altering the product may compromise its structural integrity and lead to failure. This includes notching, hole forming, shortening, narrowing the unit etc.

• Do not alter the product in-situ, any permissible alterations must be completed on a flat stable platform. i.e. on the ground or floor area.

• Do not allow anyone to walk or work beneath the product whilst it is being hoisted or suspended.

• Do not work in areas without the appropriate perimeter edge protection, handrails, guardrails, platforms or stages.

• Do not access working areas without properly constructed, maintained, secured and illuminated, stairways, ramps, ladders or the like.

• Where lifting hooks are specified within a contract, do hoist the units by crane using ALL the lifting points in the top surface provided for that purpose. Prior to lifting safety chains must be loosely slung around the underside of the unit. The safety chains may only be released immediately before the slab is placed in its final position.

• For insurance purposes, Bison do not supply or hire lifters or chain sets. Please refer to our information sheets for details of supplier hire or purchase.

• Do not run plant or store equipment on the precast floor before it is grouted and cured. Once cured do not exceed the loads specified by the engineer.

• Do use a passive fall protection system wherever reasonably practicable considering all heights where the potential fall distance could result in an injury.

• Do ensure that perimeter edge scaffolding is positioned no more than 900mm below the bearing level particularly on masonry construction.

• Do ensure all voids created whilst placing units are adequately protected during and after erection.

• Do ensure all brickwork, blockwork or concrete is adequately cured, stable and fit to receive precast concrete units, and that steelwork is stable.

• Do ensure the stability of support beams, lintels etc. is considered, particularly the rotation of support member due to unequal loading.

• Do ensure you include allowance for site handling by referring to the unit weight table.

• Do ensure that all lifting equipment is supplied, used and inspected in accordance with current legislation.

• Do ensure all lifting operations are completed and in accordance with current legislation.

• Do wear adequate personal protective equipment (PPE) whilst handling or cutting concrete.

NOTE; Due to the principle constituents of cement, the liquid released whilst drilling drainage points etc is likely to have a caustic effect on the eyes and skin. For further information or to obtain the latest issue COSHH data sheet for cement call our Health & Safety Department at our Burton office Tel 01283 495000.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 RELATED PRODUCTS

Lifting hook being loaded into machine.

From transport to final position with ease and speed.

Bison Lifting Hooks This is a unique system from Bison, available with our Hollow Core flooring. The hooks are machine inserted during the production process, for which Bison holds the European patent. The hooks enable faster, safer and more accurate erection. They also offer cost savings by minimising damage to soffit and blockwork bearings.

HEATED AND COOLED SLABS Bison and velta have joined forces to provide an innovative, sustainable and cost effective floor heating and cooling system which is precast in to Bison flooring products.

DESIGN MANUFACTURING The system utilises low temperature water for heating and high Precast concrete elements are designed and constructed in temperature water for cooling to condition a building, which the factory with a velta PE-Xa pipe matrix cast directly into the provides the opportunity to use renewable energy sources. precast slab or Hollow Core unit to offer a combined heating A sustainable alternative, which can significantly reduce and cooling solution.

CO2 emissions over the life of the building. This service covers the design, off-site manufacture and Substantial savings in investment, maintenance and installation of precast, pre-stressed Hollow Core flooring, operational costs, compared to conventional precast multi-storey wall panel structures and other bespoke air-conditioning systems. solutions with an in built heating and cooling capability. The requirements for flexible space utilisation and variable CONSTRUCTION partitioning are easily met. Off-site production reduces construction programmes Clear benefits to occupants, no noise and no draughts, and improves quality control. producing a comfortable and productive environment. Elimination of suspended ceilings can reduce building 62 height and lower construction costs.

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 07

HEALTH AND SAFETY PRODUCTS

Health and Safety is a major concern for Bison, and we have developed a range of methods and systems which help to ensure that anyone using Bison products can do so with minimal risk to themselves or others.

Trailasafe® Trailasafe® is designed to prevent or mitigate injuries resulting from falls from trailer decks. Comprising synthetic mesh suspended from a series of brackets housing support arms, the system arrests the fall of personnel, absorbing the energy of their descent and ensuring their safety. Fully demountable, the system can be stored within the vehicle or at the unloading point.

THE BISON AIR MAT The Bison Air Mat system has been tested by the BRE and approved by the HSE. The Bison Air Mat system comprises a series of interconnected and interlinked mats available in a wide range of standard sizes. Using a combination of modules they will accommodate almost any floor area. Where the edges of an area to be protected are open, or have large vertical voids that may pose the hazard of “roll-off” fall to a lower area, special parapet and corner mats can be provided.

Hole Covers Voids such as service holes, formed in precast floor units are trip hazards and have the potential to cause serious injuries. Bison’s solution is the Hole Filler: a strong yet slimlined product which is suitable for most holes. The yellow, anti-slip cover is fully reusable and comes in two sizes, 250mm or 350mm square. Each may be either screwed down or fitted without the need for power tools, by spreading the unit legs, locking it into position.

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BISON ONLINE

www.bison.co.uk

For further information on Bison Precast Concrete Flooring and the full range of Bison products and services, visit www.bison.co.uk or call the Bison sales team on 01283 495000

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 08

FLOORS

HOLLOW CORE HOLLOW CORE SOLID FLOORS COMPOSITE FLOORS COMPOSITE FLOORS

BEAM AND BLOCK COMPOSITE STEEL HOLLOW CORE FLOORS BEAM DESIGN INSULATED FLOORS

FRAMES STADIA STAIRS

HEALTH AND SAFETY

LIFTING HOOKS TRAILASAFE® AIR MATS

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BISON NOTES

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION 09

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 BISON CONCRETE PRODUCTS Ltd

Millennium Court, First Avenue, Centrum 100, Burton-Upon-Trent DE14 2WR

Telephone: 01283 495000 Facsimile: 01283 544900

Email: [email protected] Web: www.bison.co.uk

OTHER BROCHURES AVAILABLE

• Staircases

• Stadia Products

• Crosswalls

• Lattice Flooring

• Beam & Block Flooring

• Safety Systems

All dimensions and illustrations in this publication are intended for guidance only and shall not constitute a “sale by description”. All dimensions given are nominal and Bison Limited may modify and change the information, products and specifications from time Printed on 100% recyclable paper to time for a variety of reasons without prior notice. The information printed in this publication at the time of going to print, to the best of our knowledge, is correct and is not intended to have any legal effect, whether by way of advice, representation or warranty using vegetable based inks (express or implied). We accept no liability whatsoever (to the extent permitted by law) if you place any reliance on this guide you must do so at your own risk.

All rights reserved. Copyright in this publication belongs to Bison and all such copyright may not be used, sold, copied or August 2007 reproduced, in whole or part, in any manner or in any media to any person without prior written consent.