Method Statement For: Hollow Stem Piling

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Galliard Construction Limited

Method Statement for: Hollow Stem Piling

Contract No: 34767A1

Contractor: Galliard Construction Limited

Site Address: ISLINGTON SQUARE, ANGEL

Site Manager: Grant Van Wyk

07901009064 Mobile No:

Working Hours: 08:00am to 5:45pm. Mon – Fri.

Project Type: Crane Base / Block B Contig Piles

No of Piles: 16 + 12

Pile Diameter: 450Ø

Contract Start Date: W/C 01/02/2016

Scope of Works: Construction of 2 crane bases and a section of contig piles that cannot be reached with the CFA machine.

Central Park, Colchester Rd, Halstead, Essex. CO9 2EU Tel: 01787 474000. Fax: 01787 472113. Email: [email protected] Created by Sam Nicole on 20/01/2016 14:24:43 Revision: B Page 1 of 11

Galliard Construction Limited

1. Responsible Persons:

Managing Director: Steve Hadley Tel: 01787 474000 Email: [email protected]

Responsibilities: Director of Health & Safety at Central Piling. To implement, co-ordinate control the administration of Health and Safety matters within the Company.

Contracts Director: Roger Cox Tel: 01787 474000 Mobile: 07816 325054 Email: [email protected]

Responsibilities: To manage all contracts and to stay abreast of developments in Health and Safety legislation and good working practices and to ensure that any new developments are communicated both quickly and effectively to all Company staff.

HSQE & Operations Manager: Colin Newman Tel: 01787 474000 Mobile: 07976 219209 Email: [email protected]

Responsibilities: To monitor, control and correct the Health and Safety actions of all Employees and others under his jurisdiction to ensure Health and Safety is given top priority and that the Company’s Health and Safety Policy is fully understood and implemented by them. To investigate Accidents, incidents and near misses.

Contracts Supervisor: Sam Nicole Tel: 01787 474000 Mobile: 07890 539359 Email:[email protected]

Responsibilities: To liaise with client ensuring site is prepared for the establishment of Piling machinery. To ensure all Health & Safety information is correct and in place prior to start. Make sure all Central Piling employees are informed of any special circumstances and they follow all Health & Safety rules and regulations via toolbox talks. To monitor site production and progress also to address any concerns client may have during the contract period.

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Galliard Construction Limited

2. Site Control

2.1. The Rig Driver/Site Supervisor is the person in control of the works at site level. Should any problems arise beyond his authority, Contracts Supervisor, Site Personnel Manager or Contracts Director will be contacted. 2.2. Any problems with Health & Safety arising on site the HSQE & Operations Manager or Contracts Director should be informed immediately.

3. Health & Safety

3.1. Central Piling employees will operate in a safe and diligent manner at all times in accordance with their Health & Safety Policy. They will work in accordance with the method statement and risk assessment at all times. 3.2. Personnel Protective Equipment will be worn at all time whilst on site the company’s minimum requirement is: Hard Hat, Safety Boots, Safety Glasses, Gloves and Hi-Viz Vest or Jacket. Additional Personnel Protective Equipment will be worn for site specific work as required by the risk assessment i.e. Overalls and Ear Defenders. 3.3. Health & Safety is monitored daily by the HSQE & Operations Manager and any incidents, accidents or near misses are investigated promptly. All employees are encouraged to report any accidents, incidents or near misses to the Site Personnel Manager 3.4. Site Inspections are carried out monthly; any findings are passed on to the relevant managers to act. 3.5. Central Piling has a Safety, Quality & Environmental Committee which meets monthly to discuss issues arising. 3.6. All Central Piling site employees will undertake the Galliard Construction Limited site induction before commencing work on site.

4. Site Operatives/Training

4.1 The Hollow Stem Piling rig requires: 4.2 Rig Driver/ Site Supervisor: Is in control of day to day running of the site and liaising with the Site Manager if any problems arise. The Rig driver will hold a minimum of a CPCS Piling Rig Operator Ticket and CSCS Site Operatives Card. 4.3 2 x Banksman: The Banksman will hold a minimum of a CSCS Site Operatives Card and are working towards or hold a CPCS Slinger/Signaller Ticket. 4.4 No Central Piling Employee is to use equipment for which they have not been trained and authorised by Central Piling Management. 4.5 The Contracts Supervisor or Rig Driver will deliver a Tool Box Talk on commencement of the contract and at weekly intervals throughout the contract. A copy will be made available for the client if requested. 4.6 For further information on Site operatives and Training please refer to the competency matrix within the CFA method statement (Ref 34767A1 Rev D).

5. Supplied Plant & Equipment

5.1. Central Piling will supply the plant and equipment below for the contract. 5.2. Hollow Stem Piling Rig:

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Galliard Construction Limited

The Piling Rig is inspected yearly by a qualified insurance inspector [certificate provided]. All lifting equipment, fall arrest and safety harness are tested every six months. A competent person will complete the LOLER [Lifting Operations and Lifting Equipment Regulations] book weekly. All faults are listed weekly on the Weekly Examination Sheet and sent to the office for action. Any immediate problems are telephone directly to the Plant Manager. All the above information is kept on the piling rig ready for inspection. The rig will be supplied without a guard cage around the augers in order for tight access. 5.3. Diesel will be delivered in 200 litres locked bunded containers and stored in a secure location. 5.4. Auxiliary Equipment for Hollow Stem Piling consists of: Augers, cage stands and small tools.

6. Central Piling Requirements

6.2. Galliard Construction when acting as the principal contractor will provide the following: 6.2. Health & Safety requirements and Welfare facilities with accordance to the CDM 2015 regulations. 6.3 A 360 Tracked Excavator [Minimum 7 Tonne] & Qualified Driver to be in 100% attendance. 6.4. Install and maintain the working platform when required. 6.5. To protect the public from the piling works. 6.6. To provide road protection for unloading the piling rig. 6.7. To set out all pile position with a Steel pin and mushroom safety cap.

7. Mobilising on Site

7.1. All Concrete and steel reinforcement lorries delivering to site will be part of the CLOCS and FORS schemes. Any vehicles that arrive before 8:00am must park up nearby and turn off their engines until the site opens. Deliveries will be communicated and co-ordinated with the site logistics team. 7.2. All vehicles will enter the site through Studd Street and exit through the gate onto Almeida Street. 7.3. Oversized deliveries will be organised and co-ordinated through the site logistics team and access the site through the Almeida street gate. 2 banksmen or traffic marshalls will be in attendance to large deliveries at all times. 7.4. A Hiab lorry will arrive on site to deliver the Hollow Stem Piling Rig and the auxiliary equipment it will be banked by the banksman in to a position to unload. The banksman will assist [RA012 Mechanical Handling Operations] with the unloading and place the equipment in a designated area making sure it is safe and secure. When unloaded the Hiab lorry will then be banked off site by the banksman. 7.5. A Hire Company will arrive on site to deliver the grout pump and Pressure Washer it will be banked in to position to unload by a banksman and then when unloaded banked of site. 7.6. The sand and cement required to batch the concrete will be delivered by hiab to an area close to the set up grout pump. The vehicle will be banked in to position to unload by a banksman and then when unloaded banked of site.

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Galliard Construction Limited

8. Equipment Set Up

8.1. When ready the piling rig will be rigged up by the rig driver and banksman [WAH001 Working at Height, RA008 Working with Wire Rope]. The rig driver will raise the mast to vertical and place a pin and safety clip in the holding bar. 8.2. The lead auger is placed under the drill head and a pin is inserted to hold in place [RA 013 Manual Handling Operations]. 8.3. At the beginning or end of each day the hollow stem piling rig will be checked for the engine oil, hydraulic oil and diesel and topped up if necessary [COSHH 006 Gas Oil, COSHH 007 Oils and Greases, RA003 Gas Oil, RA004 Oils and Greases]. A spill kit will be kept close to any topping up procedure in case of accidents.

9. Fabricating Steel Reinforcement

9.1 The Cages will be made on site by Sub-Contractor Steel fixers where required. 9.2 The banksman will place a shackle and chain on to the arm of the excavator/crane and instruct the machine operator to lower the chains over a bundle of steel, the chains will be wrapped around the steel [See Lift Plan] [or the one use nylon sling will be used to lift the bundle of steel] the banksman will instruct the machine operator to place a bundle of steel reinforcement [RA10 Manual Handling Operations] on to cage stands. [A safety line will need to be used if moving long steel] They will remove the required number of bars from the bundle and feed a helical around the bars they will then tie the bars to the helical using tie wire. 9.3 When completed they will remove the cage from the stands and place it on the floor. 9.4 If making heavy cages, chains will be fitted to the excavator/crane and attached to the cage and the cage will be moved off the stands by the machine operator instructed by the banksman and placed in the designated area. 9.5 Repeat 9.2 to 9.4 till right number of cages are completed.

10. Piling Operations

10.1. Galliard Constuction Limited will issue a permit to dig. 10.2. The piling rig is moved round site with a banksman banking it at all times. 10.3. The piling rig will descend a crushed concrete ramp from surface level down into the basement area, where a pathway will be made to lead to the areas where the two crane bases will be situated. 10.4. When working in the basement an exclusion zone around the rig will need to be put in place by Galliard Construction or the groundworker. The grout pump and materials will need to be sectioned off on the higher level. 10.5. When working on Block B the area in which the piling rig will be working will need to be sectioned off and other contractors excluded from it. 10.6. The banksman will bank the rig over to a pile position till it is over the pin position. 10.7. The rig driver will then level the rig. When in the correct position over the pin the rig driver will lower stabilising rams on to the piling mat to secure the Piling rig.

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Galliard Construction Limited

10.8. The banksman will check the teeth of the auger before starting of each pile, if they need replacing he will signal the rig driver to raise the auger and replace the teeth. 10.9. The rig driver will commence drilling. The second line will be lower and attached to a 1.0m section of auger. [RA011 Working with Operating Plant]. While the auger is being drilled into the ground the excavator will remove the spoil from around the auger. When lead section is drilled into the ground the rig driver will disconnect the head from the auger and raise the head to the top. 10.10. The casing will be lifted into place by the excavator and lowered into the gates, the chains will then be removed, the rig driver will lower the drill head and spin the casing onto the outer thread casing attached to the drill head. He will then open the gates and commence drilling the casing into the ground. 10.11. When at the correct height the rig driver will stop rotating the casing and close the gates and disconnected the outer threaded casing from the casing. Once completed he will raise the drill head and slew the head to the side then raise the next auger and the banksman will guide the auger couplings together and when connected the banksman will inserted two auger pins and secure with R clips and when ready the rig driver will commence drilling. 10.12. Repeat 10.7 to 10.9 till drilling and casing are completed to depth. 10.13. When the rig driver has drilled to the required depth he will inform the banksman to insert a pin in the top coupling. 10.14. The rig driver will raise the head and a catcher plate will be inserted below the bottom coupling, the safety barriers will be removed. The banksman will remove the auger pin from the top coupling and instruct the rig driver to raise and slew the drill head to the side, he will then instruct the excavator driver to lower the lifting bale and insert this in the top coupling, once inserted he will place a auger pin in the coupling and remove the lower auger pin, once completed he will instructed the excavator driver to raise the auger out of the coupling and lower it in the designated area. The rig driver will then slew back and lower the drill head and couple with the auger in the catcher plate once joined an auger pin will be inserted and the drill head raise and the catcher plate removed. 10.15. Repeat 10.14 till all augers are removed. 10.16. Once the pile has been concreted the casing will be removed. 10.17. The drill head will be lowered on to the first casing and the outer threaded casing on the drill head will be rotated in place once connected the first casing will be spun out of the bore, once the second casing joint is above the gates the rig driver will stop rotating the auger and close the gates to hold the second casing, when ready the first casing will be disconnected from the first and the drill head will be raised and slew to the side the first auger will then be removed and a chain attached to the lifting holes and the excavator will be instructed to lift the casing away from the rig and lower in the designated area. 10.18. Repeat 10.17 till all casings removed. 10.19. When the hole is clean the attendance excavator will remove his bucket and the banksman will attach a shackle and chain to the lifting point on the excavators arm, he will then bank the excavator over to the reinforcement cage, attach the chain to the lifting point and instruct the operator to lift the cage into position over the pile position and lower the cage in. 10.20. When working in the basement measures must be taken to ensure good levels of ventilation at all times. To reduce the amount of emissions the grout pump will be used from a higher level and connected to the rig with concrete hoses.

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11. Mixing The Grout

11.1. The Pump operator will place water with plasticiser in to the hopper of the grout pump and then add 2 bags sharp sand to 1 bag cement [RA 002 Use Of Concrete [Wet], RA 011 Use of Cement COSHH 004 Concrete, COSHH 003 Cement] these will be opened on the grill of the hopper of the grout pump and then mixed together by the use of the agitator in the hopper. More water will be added if required. 11.2. When the sharp sand and cement has mixed together they are then tipped into the pump ready for pumping. 11.3. When instructed by the Rig Driver the Pump Operator will commence pumping, while pumping the Pump Operator will commence mixing more grout in the hopper ready to tip in to the pump. When auger is full and ready to be removed the Rig Driver will instruct the Pump operator to stop pumping. 11.3. Where open bore conditions are found, piles will be concreted by pouring directly from a dumper. The dumper will be loaded from the higher level using a series of chutes from the higher level.

12. Washing Out the Concrete Pump

12.1. The Pump Operator will pump all the remaining grout through the system, he will then wash out the top hopper into the lower hopper. 12.2. The pump operator will release the first clamp on the hoses and insert two soft balls into the hose. 12.3. The pump operator will then start the pump and push water behind the two soft balls to clean the grout hoses. When the soft balls appear the procedure is repeated a second time to make sure the system is clean. 12.4. The pump operator will then commence washing down the grout pump till clean through the trapped door. 12.5. When completed the Pump Operator will clean the area around the grout pump making it secure.

13. Securing Equipment Daily

13.1. The piling rig will be banked in to a designated area to park. The rig driver will turn off the rig and remove the key, he will make sure everything is safe then turn off the earth lever. 13.2. All site security fencing will be erected if removed by Central Piling Employees before they leave site.

14. Equipment De- Rigging

14.1. The Rig driver will be banked into a position to de-rig, the rig driver will lower the drill head so the banksman can remove the pin from the top coupling, when removed the rig driver will raise the drill head and the banksman will lay the auger on the ground. 14.2. The rig driver will lower the drill head and the safety clip and pin will be removed from the holding bar and the mast will be laid down on to the buffers.

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Galliard Construction Limited

15. De-Mobilizing from Site

15.1. A Hiab lorry will arrive on site to collect the Piling Rig, Grout Pump and the auxiliary equipment it will be banked by the banksman. It will be banked in to a position to load; a lorry restraint will be placed around the lorry bed before the banksman climbs on to the lorry, when loaded the lorry will be banked off site by a banksman.

16. Environmental

16.1. Central Piling has achieved ISO14001 Environmental Management Standard and also has an Environmental policy and is committed to achieving good environmental practice and operating in a sustainable manner. 16.2. We will endeavour to minimise concrete waste, prevent pollution and continually improve our environmental activities whilst piling. 16.3. We will work closely with Galliard Construction Ltd to ensure any environmental issues are managed quickly and efficiently. 16.4. Drip trays will be placed under all static plant, and any spillages will be collected in spill blankets and returned in blue contaminated bags to our yard for disposal. 16.5. All COSHH waste will be placed either in a waste oil drum or a blue contaminated waste bag and returned to the yard for disposal. Central Piling hold a Waste Carriers License No: CB/RM3647HU. 16.6. COSHH material containers will be kept in the COSHH container, in the site container or in drip trays while not in use. 16.7. Any drains or water courses which are situated close to the piling works will need to be managed by the client to ensure there is no contamination, we will endeavour to prevent any contamination resulting from the piling operations. 16.8. Tree branches/bushes need to be trimmed approximately 1.0m away from any pile positions; we will not drill through foliage to construct a pile as this could result in damage to the tree/bush. 16.9. Any environmental issues [Near Misses, Spillages, leaking/burst Hydraulic hoses] will be recorded as a non-conformance and be discussed in the monthly Management Committee meeting.

17. Quality Controls

17.1. Central Piling have achieved ISO 9001 certificate this demonstrate the necessary skills required to quality manage our activities, products and services. It is also a measure of reliability, consistency and commitment to supply quality to our existing and potential customers. 17.2. A pile design and working platform design will be sent to the client prior to the piling rig arriving to site. 17.3. A Contract Supervisor will visit site and produce the Health & Safety RAMs for the contract. On commencement of the contract he will be on site to sign up a Quality check sheet before drilling commences. Making sure all drawings, pile loadings, mat levels, debonding levels, cubes and test pile information is correct and complete a handover to the Site Supervisor.

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Galliard Construction Limited

17.4. The Site Supervisor/Rig driver will be given a contract file, with all required information for the contract [drawing with piles and depths on]. These are recorded on the daily record sheet in the cab and on the on board computer. After each shift the daily record sheet is sent to the office for logging on CP logistics system which makes sure drilled information is correct [depth, reinforcement and wastage] on all piles. 17.5. Cubes are taken (if requested by the client) by a specialized sub contracted company which will be competent in cube taking and testing. These cubes are tested at 7 and 28 days to confirm the strength of concrete. Results are released after testing. 17.6. Integrity testing takes place if requested by the client at a minimum of 7 to 10 days after the piles were installed. The client needs to ring the Central Piling office and inform when they will be ready; a specialized company arrives on site and tests the integrity of the pile. Results are released after testing. 17.7. Any problems with the quality of our works will be logged as a non-conformance report [Action Log] and this will be discussed in the monthly Safety, Quality, Environmental & Management Committee meeting. 17.8. Throughout the contract of work the Contracts Director, Buyer, HSQE & Operations Manager and Contract Supervisor will monitor the production and quality daily.

11. Site Specific Information

19.1. Principle Contractor to provide notice to neighbouring properties when there will be close proximity works. 19.2. Principle Contractor to liaise with restaurant and theatre with regard to the relocation of the fire escape route during piling works on the south east corner of Block B. 19.3. Principle Contractor to provide protection to new restaurant roof when piling along the east elevation of Block C. 19.4. Monitoring of any movement along party walls to be conducted by principal contractor. In the event of any movement all works will be stopped. 19.5. All operatives to attend a site induction at 8am prior to starting works for the first time. New starters will be made aware to the Principal Contractor. 19.6. All operatives will follow the emergency arrangements detailed in the site induction. 19.7. Site access will be through entrance on Studd Street and vehicle exit through Almeida Street, utilising the one way system on site. 19.8. All deliveries will have to be booked in with site logistics. 19.9. Any oversized deliveries with require the larger Almeida St entrance require 48 hours notice and a minimum of two banksmen to aid in the reversing of the vehicle onto site. 19.10. Permit to work/enter within contractor exclusion zones will be identified by the Principal Contractor. 19.11. All hot works permits to be issued by principal contractor.

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Galliard Construction Limited

18. Employees Confirmation

All site employees will read the above and sign to say they will conform with the method statement:.

Name: Date: Position: ………………………………… …………… ..….. …………

Signature: ……………………………………