Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
Issuing Office 341 Beverley Road HULL HU5 1LD
Telephone: 01482 442138
Email: [email protected] Website: www.alanwood.co.uk
TECHNICAL NOTE TO DISCHARGE DRAINAGE PLANNING CONDITION FOR CONSTRUCTION OF A NEW CORRIDOR AND EGG STORE AT NAFFERTON FARM, LOWTHORPE LANE, NAFFERTON, EAST RIDING OF YORKSHIRE
Prepared by: C Driver, BSc, CEng, MICE Principal Civil Engineer
Approved by: J Gibson, MEng (Hons), CEng, CWEM MCIWEM Civil Engineering Director
Date: 25th February 2021
Issue Revision Revised Approved Revised by by Date
For the avoidance of doubt, the parties confirm that these conditions of engagement shall not and the parties do not intend that these conditions of engagement shall confer on any party any rights to enforce any term of this Agreement pursuant of the Contracts (Rights of third Parties) Act 1999. The Appointment of Alan Wood & Partners shall be governed by and construed in all respects in accordance with the laws of England & Wales and each party submits to the exclusive jurisdiction of the Courts of England & Wales.
Prepared for Warrendale Farms Ltd Page 1 of 9 Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
1.0 INTRODUCTION
1.1 We were commissioned by Warrendale Farms Ltd to prepare a technical Note to discharge a drainage planning condition for the redevelopment of an existing egg production unit consisting of the construction of a new link corridor and egg store.
1.2 A copy of the East Riding of Yorkshire Council (ERYC) planning approval Notice 20/00110/PLF is shown in the appendix A. Condition 4 reads:
o Prior to the commencement of development, full surface water drainage details shall be submitted to and agreed in writing by the Local Planning Authority.
o This pre-commencement condition has been imposed in order to ensure a satisfactory drainage system is proposed for the site that will not increase the flood risk to the site or adjacent property.
Prepared for Warrendale Farms Ltd Page 2 of 9 Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
2.0 EXISTING SITE DESCRIPTION
2.1 Location
2.1.1 The existing site occupies land to the east of Nafferton which is approximately 2.5 miles east of Driffield. The site is off Lowthorpe Lane.
2.1.2 The Ordnance Survey grid reference for the centre of the site development is approximately 506435, 459384.
2.1.3 An aerial photograph is included in Figure 1 below, which identify the location of the site.
Figure 1: Aerial Photograph
AREA OF DEVELOPMENT
2.1.4 The existing site contains 6 existing poultry sheds which drain directly into the adjacent Nafferton Drainage Ditch running along the southern boundary of the site. In addition, there is an extra building to the east of the existing sheds and 6 solar panels constructed between the existing sheds. Appendix B shows the existing site layout.
Prepared for Warrendale Farms Ltd Page 3 of 9 Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
2.2 Topography
2.2.1 A topographic survey of the development site has not been undertaken at this stage.
2.2.2 According to Lidar data, ground levels in the vicinity of the development are shown to be in the region of 12.5m OD(N).
2.3 Ground Conditions
2.3.1 No ground investigation works have been undertaken in respect of the new development.
2.3.2 A desktop study of the British Geological Survey map reveals the local geology to comprise superficial deposits of Till, Devensian - Diamicton overlaying bedrock comprising Flamborough Chalk Formation – Chalk.
2.3.3 However, local borehole records in the area of the development show clay extending to a depth of approximately 6m below ground level.
2.3.4 The ground conditions in the area are therefore unsuitable for soakaway/infiltration to be used as the method for the disposal of surface water run-off from the development.
2.3.5 A study of the groundwater maps in the region shows that the site overlays a Secondary (undifferentiated) Aquifer. The groundwater vulnerability in the area of the development is classified as ‘Medium-High’.
Prepared for Warrendale Farms Ltd Page 4 of 9 Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
3.0 PROPOSED DEVELOPMENT
3.1 The proposed development involves the demolition and construction of a new egg storage building and a corridor linking the entrances to the existing 6 poultry sheds.
3.2 An indicative layout drawing of the proposed development is included in Appendix C.
3.3 In terms of flood risk vulnerability, the development is classed as ‘Less Vulnerable’.
3.4 In terms of flood zone compatibility, the construction of ‘Less Vulnerable’ development in Flood Zone 1 is considered appropriate.
Prepared for Warrendale Farms Ltd Page 5 of 9 Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
4.0 DRAINAGE ASSESSMENT
4.1 General
4.1.1 The surface water drainage has been designed in accordance with current CIRIA C753 SuDS Manual guidelines.
4.2 Surface Water Drainage
4.2.1 Existing Site
4.2.1.1 From the aerial photograph included in Figure 1 above, it can be seen that the area of the development currently comprises an existing poultry shed development with surrounding agricultural land.
4.2.2 Run-off Destination
4.2.2.1 Requirement H3 of the Building Regulations establishes a preferred hierarchy for disposal of surface water. Consideration should firstly be given to soakaway, infiltration, watercourse and sewer in that priority order.
4.2.2.2 The underlying strata in the vicinity of the development is considered to be unsuitable for the disposal of surface water run-off from the development into soakaways or infiltration trenches.
4.2.2.3 The second preferred option would be to discharge the surface water run- off from the development to a watercourse.
4.2.2.4 Nafferton Drainage ditch is located adjacent to the southern boundary of the development, which drains the existing buildings.
4.2.2.5 It is therefore proposed that the surface water run-off from the new development is discharged into this drainage ditch.
Prepared for Warrendale Farms Ltd Page 6 of 9 Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
4.2.3 Flood Risk
4.2.3.1 For new developments, the current design criteria required for the surface water drainage will need to be based upon a 1 in 100 year storm event, with an additional allowance to account for climate change resulting from global warming. There should be no above ground flooding for the 1 in 30 year return period and no property flooding or off site flooding from the critical 1 in 100 year storm event, with the additional allowance to account for climate change.
4.2.4 Climate Change
4.2.4.1 An additional allowance of 30% has been included in the design to account for climate change resulting from, global warming in accordance with East Riding of Yorkshire Council SuDS guidelines.
4.2.5 Peak Flow Control
4.2.5.1 Based upon the site layout drawing, the developable site area becoming impermeable in the form of roofs and areas of paving which will need to be positively drained has been calculated at approximately 816m2.
4.2.5.2 The uncontrolled surface water run-off from the new development could be approximately 11.4 litres per second, based on BS EN 752 calculations, using a rainfall intensity of 50mm/hour. However, to meet the flood risk planning requirements, it is unacceptable to discharge flows freely from the proposed development site at an unrestricted rate. Therefore, flows from the proposed development are normally limited to the greenfield runoff rate, established as 1.4 litres per second per ha, based on the impermeable contributing area of the site. For this development this would only equate to approximately 0.11 litres per second which cannot be achieved in practical terms.
4.2.5.3 However, in order to ensure the discharge of surface water will not increase the risk of flooding to other properties, it will be necessary to attenuate the drainage by restricting the discharge and providing storage as required.
Prepared for Warrendale Farms Ltd Page 7 of 9 Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
4.2.5.4 It is considered that the lowest discharge rate which can be achieved in practical terms without creating future maintenance issues is 3.5 litres per second and consequently this rate has been used for design purposes.
4.2.5.5 In this case, it would be impractical to construct rainwater drainage all the way along the new corridor therefore we have proposed to rather drain and attenuate runoff from half of the roof of the closet poultry shed (No 1) in lieu of draining the corridor.
4.2.5.6 The area of the long corridor roof is calculated at 450m2 and the area of half of the poultry shed is 585m2. It can therefore be seen that the area of half the poultry shed more than compensates for the area of the long corridor. We therefore proposed to connect half of the first poultry shed’s roof in lieu of connecting the long corridor to the drainage system.
4.2.5.7 The required design criteria for the surface water drainage will need to be based upon a 1 in 100 year storm with an additional allowance to account for climate change resulting from global warming.
4.2.5.8 An hydraulic model study of the new drainage network has been undertaken in order to assess the required pipe sizes and gradients and to calculate the volume of storage which will be required.
4.2.5.9 A copy of the hydraulic model calculations is included in Appendix D.
4.2.5.10 Results of the above analysis show that the required attenuation storage volume is 23 m3.
4.2.5.11 The required storage will be provided within an attenuation lagoon located between the egg storage shed and the drainage ditch south of the development.
4.2.5.12 Layout drawings of the proposed drainage network are included in Appendix E
Prepared for Warrendale Farms Ltd Page 8 of 9 Technical Note to Discharge Drainage Planning Condition for Construction of a new Corridor and Egg Store at Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding of Yorkshire Project Number: - JAG/CD/45117-TN001
5.0 CONCLUSIONS
5.1 We confirm this report demonstrates that the site can be suitably drained in accordance with the required standards.
5.2 We confirm that the drainage described in this report satisfies the requirements of ERYC’s planning Notice of Decision Application, No. 20/00110/PLF and therefore discharges the requirements of condition 4 of the notice.
Prepared for Warrendale Farms Ltd Page 9 of 9
APPENDIX A
ERYC Planning Approval Notice 20/00110/PLF
County Hall, Beverley, East Riding Of Yorkshire, HU17 9BA Telephone 01482 393939 www.eastriding.gov.uk Stephen Hunt Head of Planning and Development Management
Ian Pick Associates Limited Your Ref: Station Farm Offices Contact: Mrs Joanne Marshall Wansford Road Email: [email protected] Nafferton Tel: (01482) 393872 East Riding Of Yorkshire Date: 17 March 2020 YO25 8NJ Application No: 20/00110/PLF
Case Officer: Mrs Joanne Marshall
NOTICE OF DECISION
TOWN AND COUNTRY PLANNING ACT 1990
Proposal: Erection of a link corridor and egg packing/storage building following demolition of existing buildings Location: Nafferton Farm, Lowthorpe Lane, Nafferton, East Riding Of Yorkshire, YO25 8HA, Applicant: Warrendale Farms Ltd Application type: Full Planning Permission
The above application has been considered by the Council in pursuance of their powers under the above mentioned Act and has been APPROVED, in accordance with the terms and details as submitted, subject to the following conditions:
1. The development hereby permitted shall be begun before the expiration of three years from the date of this permission.
This condition is imposed in order to comply with the provisions of Section 91 of the Town and Country Planning Act 1990, as amended by Section 51 of the Planning and Compulsory Purchase Act 2004 and in order to ensure that the Local Planning Authority retains the right to review unimplemented permissions.
2. The materials and finish to be used in the external surfaces of the development hereby approved shall be in accordance with the details noted on the application form, unless otherwise agreed in writing with the Local Planning Authority. For the avoidance of doubt these are:
Walls - Profile sheeting in Juniper Green. Roof -Profile sheeting in Juniper Green.
This condition is imposed in accordance with policy ENV1 of the East Riding Local Plan and to protect the character and appearance of the area. Page 1 of 4
Alan Menzies Director of Planning and Economic Regeneration 3. Prior to first use of the egg packing building hereby approved one bat box such as Schwegler 2FE, 1FQ or 1WQ (or similar product from an alternative supplier) shall be erected on the site in accordance with the manufacturer's installation recommendations and shall be retained thereafter.
This condition is imposed in order to comply with the National Planning Policy Framework (NPPF) and the Natural Environment and Rural Communities Act (NERC) 2006.
4. Prior to the commencement of development, full surface water drainage details shall be submitted to and agreed in writing by the Local Planning Authority.
This pre-commencement condition has been imposed in order to ensure a satisfactory drainage system is proposed for the site that will not increase the flood risk to the site or adjacent property.
5. A complete and operational drainage system shall be installed prior to the building being brought into use.
This condition has been imposed in order to ensure that during development of the site, all site surface water run-off is captured within the site and does not increase the flood risk to adjacent highway or property.
6. The development hereby permitted shall be carried out in accordance with the following approved plans:
IP/WF/01 - Location Plan - 14 January 2020 IP/WF/02 - Proposed Site Plan - 14 January 2020 IP/WF/05 - Proposed Elevations and Floor Plans - 14 January 2020
This condition is imposed in accordance with policy ENV1 of the East Riding Local Plan and for the avoidance of doubt and to ensure that the development hereby permitted is carried out in accordance with the approved details in the interests of the character and amenity of the area and the provisions of the development plan.
Informatives:
Whilst there is only a low risk of protected species being present on site the applicant's attention should be drawn to the need to comply with the legislative protection afforded to protected species.
Protected Species
The granting of planning permission does not absolve the applicants from complying with the relevant law protecting species, including obtaining and complying with the terms of conditions of any licences required, as described in Part IVB of Circular 06/2005.
Should any protected species or evidence of protected species be found prior to or during development, work must stop immediately and Natural England contacted for further advice on 0300 060 3900. This is a legal requirement under the Wildlife and Countryside Act 1981 (as amended) and applies to whoever carries out the work. All contractors on site should be made aware of this requirement and be given Natural England's contact details.
Page 2 of 4 20/00110/PLF Nesting Birds
With certain exceptions, all wild birds, their nests and eggs are protected by the Wildlife and Countryside Act 1981 (as amended by the Countryside and Rights of Way Act 2000). If any proposed works is scheduled to take place in the main bird breeding season (early March to late August) the potential impact on nesting birds and the risk of committing an offence is increased. Therefore, in such an instance the Council would advise that a survey for active bird nests should be carried out by a suitably competent person immediately prior to commencing works. If active nests are found, all construction works around the nest should be avoided until the breeding attempt has ended.
Relevant Planning Policies:
East Riding Local Plan Strategy Document (ERLP SD) (April 2016)
Policy A3 Driffield & Wolds sub area Policy S1 Presumption in favour of sustainable development Policy S4 Supporting development in Villages and the Countryside Policy EC1 Supporting the growth and diversification of the East Riding economy
National Planning Policy Framework (NPPF) (2019)
In making this decision the Council has followed the requirements in paragraph 38 of the National Planning Policy Framework.
Signed
17 March 2020 Stephen Hunt MRTPI Head of Planning and Development Management
Page 3 of 4 20/00110/PLF NOTES TO ACCOMPANY THIS DECISION
Appeals to the Secretary of State If you are aggrieved by this decision you can appeal to the Planning Inspectorate. Appeals can be made online at: https//www.gov.uk/planning-inspectorate. If you are unable to access the online appeal form, please contact the Planning Inspectorate to obtain a paper copy of the appeal form on telephone number: 0303 444 5000.
Appeals must be made on the correct forms relating to the type of application you submitted. Information provided as part of the appeal process will be published online.
If you wish to appeal against a decision relating to:
• Householder applications - appeals must be made within 12 weeks of the date of this notice; • Minor commercial applications - appeals must be made within 12 weeks of the date of this notice; • Advertisement consents - appeals must be made within 8 weeks of the date of this notice; • Any other type of application – appeals must be made within 6 months of the date of this notice.
Appellants requesting an inquiry into their appeal must notify the Local Planning Authority and Planning Inspectorate at least 10 days prior to appeal submission.
Please note - If this is a decision on a planning application relating to the same or substantially the same land and development as is already the subject of an enforcement notice, you must appeal within 28 days of the date of this notice.
If an enforcement notice is served relating to the same land and development as in your application, you must appeal within 28 days of the date of service of the enforcement notice or within 6 months (12 weeks in the case of a householder appeal) of the date of this notice, whichever period expires earlier.
The Secretary of State can allow a longer period for giving notice of an appeal but will not normally be prepared to use this power unless there are special circumstances which excuse the delay in giving notice of appeal.
The Secretary of State need not consider an appeal if it seems that the local planning authority could not have granted planning permission for the proposed development or could not have granted it without the conditions they imposed, having regard to the statutory requirements, to the provisions of any development order and to any directions given under a development order.
Purchase Notice If either the Local Planning Authority or the Secretary of State for the Environment refuses permission to develop land or grants it subject to conditions, the owner may claim that he can neither put the land to a reasonably beneficial use in its existing state nor can he render the land capable of a reasonably beneficial use by carrying out any development which has been or would be permitted.
In these circumstances, the owner may serve a purchase notice on the Council in whose area the land is situated. This notice will require the Council to purchase his interest in the land in accordance with Part VI of the Town and Country Planning Act 1990.
Approval of Details Required by Conditions A fee is payable for the submission of any matters required to be submitted for approval by any conditions attached to this permission. The fee is payable for each submission, not for each condition. Please refer to the council’s website at www.eastriding.gov.uk for more information.
Page 4 of 4 20/00110/PLF
APPENDIX B
Existing Site Layout Drawing
APPENDIX C
Indicative Layout Drawing
APPENDIX D
Hydraulic Model Study
Alan Wood & Partners Page 1 Omega 2 45117 - Nafferton Farm Monks Cross Dri e Attenuation Calc York YO32 9GZ Date 17/02/2021 16:24 Designed b CD File source control.SRCX Checked b JAG Micro Drainage Source Control 2020.1
Summar of Results for 100 ear Return Period (+30%)
S o m Ma Ma Ma Ma S a E en Le el Dep h Con ol Vol me (m) (m) (l/ ) (m )
15 min Summer 11.477 0.477 3.5 14.8 O K 30 min Summer 11.548 0.548 3.5 18.2 O K 60 min Summer 11.579 0.579 3.5 19.8 O K 120 min Summer 11.574 0.574 3.5 19.5 O K 180 min Summer 11.551 0.551 3.5 18.4 O K 240 min Summer 11.523 0.523 3.5 16.9 O K 360 min Summer 11.450 0.450 3.5 13.5 O K 480 min Summer 11.374 0.374 3.5 10.4 O K 600 min Summer 11.304 0.304 3.5 7.8 O K 720 min Summer 11.243 0.243 3.5 5.8 O K 960 min Summer 11.157 0.157 3.4 3.4 O K 1440 min Summer 11.099 0.099 2.9 2.0 O K 2160 min Summer 11.075 0.075 2.2 1.5 O K 2880 min Summer 11.064 0.064 1.7 1.2 O K 4320 min Summer 11.053 0.053 1.2 1.0 O K 5760 min Summer 11.046 0.046 1.0 0.9 O K 7200 min Summer 11.042 0.042 0.8 0.8 O K 8640 min Summer 11.039 0.039 0.7 0.7 O K 10080 min Summer 11.036 0.036 0.6 0.7 O K 15 min Winter 11.520 0.520 3.5 16.8 O K 30 min Winter 11.599 0.599 3.5 20.9 O K
S o m Rain Flooded Di cha ge Time-Peak E en (mm/h ) Vol me Vol me (min ) (m ) (m )
15 min Summer 113.945 0.0 17.3 17 30 min Summer 76.122 0.0 23.1 31 60 min Summer 48.563 0.0 29.5 54 120 min Summer 29.964 0.0 36.4 88 180 min Summer 22.286 0.0 40.6 122 240 min Summer 17.951 0.0 43.6 156 360 min Summer 13.142 0.0 47.9 224 480 min Summer 10.539 0.0 51.2 284 600 min Summer 8.874 0.0 53.9 340 720 min Summer 7.706 0.0 56.2 398 960 min Summer 6.163 0.0 59.9 504 1440 min Summer 4.490 0.0 65.5 734 2160 min Summer 3.265 0.0 71.4 1100 2880 min Summer 2.601 0.0 75.8 1468 4320 min Summer 1.885 0.0 82.5 2156 5760 min Summer 1.498 0.0 87.4 2936 7200 min Summer 1.253 0.0 91.3 3576 8640 min Summer 1.082 0.0 94.7 4272 10080 min Summer 0.956 0.0 97.6 5080 15 min Winter 113.945 0.0 19.4 17 30 min Winter 76.122 0.0 25.9 31
1982-2020 Inno e Alan Wood & Partners Page 2 Omega 2 45117 - Nafferton Farm Monks Cross Dri e Attenuation Calc York YO32 9GZ Date 17/02/2021 16:24 Designed b CD File source control.SRCX Checked b JAG Micro Drainage Source Control 2020.1
Summar of Results for 100 ear Return Period (+30%)
S o m Ma Ma Ma Ma S a E en Le el Dep h Con ol Vol me (m) (m) (l/ ) (m )
60 min Winter 11.638 0.638 3.5 23.1 O K 120 min Winter 11.627 0.627 3.5 22.5 O K 180 min Winter 11.595 0.595 3.5 20.7 O K 240 min Winter 11.552 0.552 3.5 18.4 O K 360 min Winter 11.439 0.439 3.5 13.1 O K 480 min Winter 11.317 0.317 3.5 8.3 O K 600 min Winter 11.213 0.213 3.5 4.9 O K 720 min Winter 11.143 0.143 3.4 3.1 O K 960 min Winter 11.098 0.098 2.9 2.0 O K 1440 min Winter 11.075 0.075 2.1 1.5 O K 2160 min Winter 11.061 0.061 1.6 1.2 O K 2880 min Winter 11.053 0.053 1.2 1.0 O K 4320 min Winter 11.044 0.044 0.9 0.8 O K 5760 min Winter 11.039 0.039 0.7 0.7 O K 7200 min Winter 11.035 0.035 0.6 0.7 O K 8640 min Winter 11.032 0.032 0.5 0.6 O K 10080 min Winter 11.030 0.030 0.5 0.6 O K
S o m Rain Flooded Di cha ge Time-Peak E en (mm/h ) Vol me Vol me (min ) (m ) (m )
60 min Winter 48.563 0.0 33.0 58 120 min Winter 29.964 0.0 40.8 94 180 min Winter 22.286 0.0 45.5 132 240 min Winter 17.951 0.0 48.8 170 360 min Winter 13.142 0.0 53.6 240 480 min Winter 10.539 0.0 57.4 296 600 min Winter 8.874 0.0 60.4 346 720 min Winter 7.706 0.0 62.9 392 960 min Winter 6.163 0.0 67.1 492 1440 min Winter 4.490 0.0 73.3 734 2160 min Winter 3.265 0.0 80.0 1096 2880 min Winter 2.601 0.0 84.9 1464 4320 min Winter 1.885 0.0 92.3 2148 5760 min Winter 1.498 0.0 97.9 2888 7200 min Winter 1.253 0.0 102.3 3656 8640 min Winter 1.082 0.0 106.0 4256 10080 min Winter 0.956 0.0 109.3 5120
1982-2020 Inno e Alan Wood & Partners Page 3 Omega 2 45117 - Nafferton Farm Monks Cross Dri e Attenuation Calc York YO32 9GZ Date 17/02/2021 16:24 Designed b CD File source control.SRCX Checked b JAG Micro Drainage Source Control 2020.1
Rainfall Details
Rainfall Model FSR Winter Storms Yes Return Period ( ears) 100 C (Summer) 0.750 Region England and Wales C (Winter) 0.840 M5-60 (mm) 18.500 Shortest Storm (mins) 15 Ratio R 0.364 Longest Storm (mins) 10080 Summer Storms Yes Climate Change % +30
Time Area Diagram
Total Area (ha) 0.081
Time (min ) A ea F om: To: (ha)
0 4 0.081
1982-2020 Inno e Alan Wood & Partners Page 4 Omega 2 45117 - Nafferton Farm Monks Cross Dri e Attenuation Calc York YO32 9GZ Date 17/02/2021 16:24 Designed b CD File source control.SRCX Checked b JAG Micro Drainage Source Control 2020.1
Model Details
Storage is Offline Di iding Weir Le el (m) 11.000 Co er Le el (m) 12.000
Tank or Pond Structure
In ert Le el (m) 11.000
Dep h (m) A ea (m ) Dep h (m) A ea (m ) Dep h (m) A ea (m )
0.000 18.0 0.700 63.4 1.000 91.4
H dro-Brake Optimum Outflo Control
Unit Reference MD-SHE-0093-3500-0700-3500 Design Head (m) 0.700 Design Flo (l/s) 3.5 Flush-Flo Calculated Objecti e Minimise upstream storage Application Surface Sump A ailable Yes Diameter (mm) 93 In ert Le el (m) 11.000 Minimum Outlet Pipe Diameter (mm) 150 Suggested Manhole Diameter (mm) 1200
Con ol Poin Head (m) Flo (l/ )
Design Point (Calculated) 0.700 3.5 Flush-Flo 0.209 3.5 Kick-Flo 0.468 2.9 Mean Flo o er Head Range - 3.0
The h drological calculations ha e been based on the Head/Discharge relationship for the H dro-Brake Optimum as specified. Should another t pe of control de ice other than a H dro-Brake Optimum be utilised then these storage routing calculations ill be in alidated
Dep h (m) Flo (l/ ) Dep h (m) Flo (l/ ) Dep h (m) Flo (l/ ) Dep h (m) Flo (l/ )
0.100 3.0 1.200 4.5 3.000 6.9 7.000 10.3 0.200 3.5 1.400 4.8 3.500 7.4 7.500 10.6 0.300 3.4 1.600 5.1 4.000 7.9 8.000 11.0 0.400 3.3 1.800 5.4 4.500 8.3 8.500 11.3 0.500 3.0 2.000 5.7 5.000 8.8 9.000 11.6 0.600 3.3 2.200 6.0 5.500 9.2 9.500 12.0 0.800 3.7 2.400 6.2 6.000 9.6 1.000 4.1 2.600 6.4 6.500 9.9
1982-2020 Inno e
APPENDIX E
Drainage Layout Drawing
100mm atA1
3. 2. (COMPENSATORY AREA) AREA OFHALFROOF=585m IL 12.123m CL 12.773m S1
2 1. ROOF INLIEUOFDRAINAGEFROMTHE FROM HALFOFTHEPOULTRYSHED NOTE: THEPROPOSEDDRAINAGEIS LINK CORRIDOR
CORRIDOR AREA=450m 1:150 IL 12.013m CL 12.663m S4
2
Replacement Egg Store Egg Replacement
Link Corridor Link 1:150 IL 11.743m CL 13.095m S3
1:150 225Ø IL 11.704m CL 12.355m S5 IL 12.020m CL 12.670m S6 IL 11.820m CL 12.320m S2
1:150 225Ø 1:150
IL 11.615m CL 12.465m S7 1:150 225Ø 1:150
IL 11.490m CL 12.350m CATCHPIT S8 1:150 @ Q =3.5l/s VORTEX FLOWCONTROLVALVE 0.7m HEAD DISCHARGE TODRAINAGEDITCH AT 3.5l/sVIACONCRETEHEADWALL 300mm FREEBOARDISINCLUDED 6X3m BASEAREAx1mDEPTH 23m WITH SIDESLOPES1:3. 3 ATTENUATIONPOND NOTES: Rev P1 Drawing: Project: Drawing Role: Status: Job. no. Client: HU5 1LD Hull Hull 341 BeverleyRoad T. 01482442138 www.alanwood.co.uk 1. 3. 2. 4. Description FIRST ISSUE Office INSTRUCTIONS OBTAINEDBEFOREWORKISCOMMENCED. BUILDING ANDITSCOMPONENTSARESAFEDURINGERECTION.THISINCLUDESTHE DETERMINE THEERECTIONPROCEDUREANDSEQUENCEENSURETHAT BUILDING ISFULLYCOMPLETED.ITTHECONTRACTORSSOLERESPONSIBILITYTO DRAWINGS NOTTOBESCALED.ALLDIMENSIONSCHECKEDONSITEBYTHE NECESSARY, SUCHMATERIALREMAININGTHEPROPERTYOFCONTRACTORON CONTRACTOR. ANYDISCREPANCIESTOBENOTIFIEDTHEENGINEERANDFURTHER CONFLICT OFREQUIREMENTSEXISTTHEORDERPRECEDENCESHALLBEASSHOWNIN COMPLETION, ANDFORENSURINGTHATTHEWORKSANYADJACENTPROPERTIES THE STRUCTUREISDESIGNEDTOBESELF-SUPPORTINGANDSTABLEAFTER THIS DRAWINGISTOBEREADINCONJUNCTIONWITHALLOTHERRELEVANTENGINEERS THE SPECIFICATION.OTHERWISESTRICTESTPROVISIONSHALLGOVERN. THESE NOTESAREINTENDEDTOAUGMENTDRAWINGSANDSPECIFICATIONS.WHERE ADDITION OFWHATEVERTEMPORARYBRACING,GUYSORTIE-DOWNSWHICHMAYBE AND ARCHITECTSDRAWINGS. ARE SAFEINTHETEMPORARYCONDITION. Alan Wood&Partners WDF - AWP -ZZXX -DRC3000 Proposed EggUnitNafferton Farm,Lowthorpe Lane, Nafferton Proposed DrainageLayout Civil Engineer For Approval Warrendale FarmsLtd 45117 Project DRAINAGE LEGEND: Originator Scale@ A1: Volume UNLESS NOTEDOTHERWISE) PROPOSED SWPIPEWORK(150mmØ PROPOSED SWMANHOLE 1:200 Level Building Surveyors Project Managers & StructuralEngineers Consulting Civil London Lincoln Leeds Sheffield Scarborough York Type Role 23.02.21 Rev. Date T. 01904611594 T. 01142440077 T. 01723865484 T. 02071860761 T. 01522300210 T. 01135311098 Number P1 DE By CD Chk App JAG Alan Wood & Partners
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