{"id":3520507707479,"title":"SuDS Rainwater Attenuation Sizing Design Calculation","handle":"suds-attenuation-sizing-design","description":"\u003cp\u003eIf you or your client are at the pre planning stage, have a planning condition or need to satisfy building control you may require an Attenuation tank or Soakaway sizing design to demonstrate the attenuation volume required. \u003c\/p\u003e\n\u003cp\u003eThe output is a pdf document which provides the \u003cstrong\u003eattenuation volume required\u003c\/strong\u003e.  \u003c\/p\u003e\n\u003cp\u003eWhat we require:  \u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eAddress and Postcode of development \u003c\/li\u003e\n\u003cli\u003eRoof Area in plan  (m2, a runoff coefficient of 0.95 will be assumed unless otherwise stated) \u003c\/li\u003e\n\u003cli\u003eOther (non roof) impermeable ground surface area which discharge to drain\/attenuation tank (m2, a runoff coefficient of 0.90 will be assumed unless otherwise stated) \u003c\/li\u003e\n\u003cli\u003eAllowable discharge rate (l\/s). Usually provided by planning within the planning conditions, Building control depending on the stage of project or the Water company.   \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlow Control Device if specified or \u003ca href=\"https:\/\/www.freeflush.co.uk\/products\/vortiflo-complete-vortex-flow-control-chamber-300-and-450mm?_pos=6\u0026amp;_sid=3c0ecb161\u0026amp;_ss=r\"\u003eFlowBrake\u003c\/a\u003e assumed i.e lowest blockage risk option.\u003c\/li\u003e\n\u003cli\u003eClimate change factor will be based on DEFRA's \u003ca href=\"https:\/\/environment.data.gov.uk\/hydrology\/climate-change-allowances\/rainfall\" data-mce-href=\"https:\/\/environment.data.gov.uk\/hydrology\/climate-change-allowances\/rainfall\"\u003eclimate change allowance map\u003c\/a\u003e assuming an epoch for development with a lifetime between 2061 and 2125. For \u003ca href=\"https:\/\/www.gov.wales\/sites\/default\/files\/publications\/2021-09\/climate-change-allowances-and-flood-consequence-assessments_0.pdf\"\u003eWales 40% allowance\u003c\/a\u003e will be used. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesign Storm period (if specified, otherwise 1 in 100 year summer storm assumed)\u003c\/li\u003e\n\u003cli\u003eDesign Rainfall Data, FSR assumed, FEH available for an additional fee.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUrban creep will be assumed as zero unless specified otherwise.\u003c\/li\u003e\n\u003cli\u003eAnticipated loading of tank\/soakaway (\u0026lt;3T = min 0.27m cover, 12T = min 0.65m cover, 40T = min 0.85m cover, 60T = min 1.02m cover)\u003c\/li\u003e\n\u003cli\u003eSite constraints. Typically invert level of receiving sewer so that the proposed system can discharge by gravity. Invert level of incoming pipe if already in situ.\u003c\/li\u003e\n\u003cli\u003ePreferred plan dimensions\/constraints\/maximum dig depth (e.g. 6m x 4.2m in plan, standard crates measure 1.2l x 0.6w x 0.42h m)\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIf you are combining attenuation with rainwater harvesting the additional info is required:  \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo of bedrooms of proposed development\u003c\/li\u003e\n\u003cli\u003euse of rainwater - toilet flushing, toilet flushing and irrigation, toilet flushing machine washing and irrigation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSimply post these details in the notes or email technical with your order number as the subject line. \u003c\/p\u003e\n\u003cp\u003eThe pdf will be delivered to the email address you have registered with. \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\" data-mce-style=\"text-decoration: underline;\"\u003eNotes\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eAllow 10 working days for the output to be delivered from supply of information requested above. \u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eInformation requested is required to complete the calculation. The calculation cannot be commenced until the information requested is provided by the client in the format requested above. \u003c\/li\u003e\n\u003cli\u003eCalculation revisions charged at £50+VAT.\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2019-04-26T09:19:33+01:00","created_at":"2019-04-26T09:28:32+01:00","vendor":"FreeFlush","type":"calculation","tags":[],"price":6000,"price_min":6000,"price_max":12000,"available":true,"price_varies":true,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":40177707090007,"title":"Full calculation","option1":"Full calculation","option2":null,"option3":null,"sku":"Sudscalc","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"SuDS Rainwater Attenuation Sizing Design Calculation - Full calculation","public_title":"Full calculation","options":["Full calculation"],"price":12000,"weight":0,"compare_at_price":null,"inventory_quantity":-118,"inventory_management":null,"inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":40177707122775,"title":"Revision","option1":"Revision","option2":null,"option3":null,"sku":"Sudscalc revision","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"SuDS Rainwater Attenuation Sizing Design Calculation - Revision","public_title":"Revision","options":["Revision"],"price":6000,"weight":0,"compare_at_price":null,"inventory_quantity":-13,"inventory_management":null,"inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.freeflush.co.uk\/cdn\/shop\/products\/SuDSsizing.jpg?v=1625050194"],"featured_image":"\/\/www.freeflush.co.uk\/cdn\/shop\/products\/SuDSsizing.jpg?v=1625050194","options":["Calculation type"],"media":[{"alt":"SuDS Rainwater Attenuation Sizing Design Calculation - Freeflush Water Management Ltd. ","id":20534025191511,"position":1,"preview_image":{"aspect_ratio":0.707,"height":934,"width":660,"src":"\/\/www.freeflush.co.uk\/cdn\/shop\/products\/SuDSsizing.jpg?v=1625050194"},"aspect_ratio":0.707,"height":934,"media_type":"image","src":"\/\/www.freeflush.co.uk\/cdn\/shop\/products\/SuDSsizing.jpg?v=1625050194","width":660}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eIf you or your client are at the pre planning stage, have a planning condition or need to satisfy building control you may require an Attenuation tank or Soakaway sizing design to demonstrate the attenuation volume required. \u003c\/p\u003e\n\u003cp\u003eThe output is a pdf document which provides the \u003cstrong\u003eattenuation volume required\u003c\/strong\u003e.  \u003c\/p\u003e\n\u003cp\u003eWhat we require:  \u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eAddress and Postcode of development \u003c\/li\u003e\n\u003cli\u003eRoof Area in plan  (m2, a runoff coefficient of 0.95 will be assumed unless otherwise stated) \u003c\/li\u003e\n\u003cli\u003eOther (non roof) impermeable ground surface area which discharge to drain\/attenuation tank (m2, a runoff coefficient of 0.90 will be assumed unless otherwise stated) \u003c\/li\u003e\n\u003cli\u003eAllowable discharge rate (l\/s). Usually provided by planning within the planning conditions, Building control depending on the stage of project or the Water company.   \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlow Control Device if specified or \u003ca href=\"https:\/\/www.freeflush.co.uk\/products\/vortiflo-complete-vortex-flow-control-chamber-300-and-450mm?_pos=6\u0026amp;_sid=3c0ecb161\u0026amp;_ss=r\"\u003eFlowBrake\u003c\/a\u003e assumed i.e lowest blockage risk option.\u003c\/li\u003e\n\u003cli\u003eClimate change factor will be based on DEFRA's \u003ca href=\"https:\/\/environment.data.gov.uk\/hydrology\/climate-change-allowances\/rainfall\" data-mce-href=\"https:\/\/environment.data.gov.uk\/hydrology\/climate-change-allowances\/rainfall\"\u003eclimate change allowance map\u003c\/a\u003e assuming an epoch for development with a lifetime between 2061 and 2125. For \u003ca href=\"https:\/\/www.gov.wales\/sites\/default\/files\/publications\/2021-09\/climate-change-allowances-and-flood-consequence-assessments_0.pdf\"\u003eWales 40% allowance\u003c\/a\u003e will be used. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesign Storm period (if specified, otherwise 1 in 100 year summer storm assumed)\u003c\/li\u003e\n\u003cli\u003eDesign Rainfall Data, FSR assumed, FEH available for an additional fee.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUrban creep will be assumed as zero unless specified otherwise.\u003c\/li\u003e\n\u003cli\u003eAnticipated loading of tank\/soakaway (\u0026lt;3T = min 0.27m cover, 12T = min 0.65m cover, 40T = min 0.85m cover, 60T = min 1.02m cover)\u003c\/li\u003e\n\u003cli\u003eSite constraints. Typically invert level of receiving sewer so that the proposed system can discharge by gravity. Invert level of incoming pipe if already in situ.\u003c\/li\u003e\n\u003cli\u003ePreferred plan dimensions\/constraints\/maximum dig depth (e.g. 6m x 4.2m in plan, standard crates measure 1.2l x 0.6w x 0.42h m)\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIf you are combining attenuation with rainwater harvesting the additional info is required:  \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo of bedrooms of proposed development\u003c\/li\u003e\n\u003cli\u003euse of rainwater - toilet flushing, toilet flushing and irrigation, toilet flushing machine washing and irrigation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSimply post these details in the notes or email technical with your order number as the subject line. \u003c\/p\u003e\n\u003cp\u003eThe pdf will be delivered to the email address you have registered with. \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\" data-mce-style=\"text-decoration: underline;\"\u003eNotes\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eAllow 10 working days for the output to be delivered from supply of information requested above. \u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eInformation requested is required to complete the calculation. The calculation cannot be commenced until the information requested is provided by the client in the format requested above. \u003c\/li\u003e\n\u003cli\u003eCalculation revisions charged at £50+VAT.\u003c\/li\u003e\n\u003c\/ul\u003e"}