{"id":4665902268503,"title":"DROP Level 3 Rainwater Harvesting Calculation (Desktop Feasibility)","handle":"level-3-rainwater-harvesting-calculation","description":"\u003cp\u003eIf you're considering rainwater harvesting on a commercial scale or trying to achieve \u003ca href=\"https:\/\/www.freeflush.co.uk\/pages\/water-neutrality-in-the-uk-how-freeflush-can-help\"\u003ewater neutrality\u003c\/a\u003e a Level 3 Rainwater Harvesting Calculation may be suitable. Our level 2 analysis is available for free by clicking \u003ca href=\"https:\/\/www.freeflush.co.uk\/pages\/rainwater-harvesting-calculator\"\u003ethis link.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor large or complex schemes where significant economic benefits might be realised or where there is a temporal variation in demand it is suggested that continuous rainfall time series (or simulation modelling) should be used to address this variability in order to optimise the design in accordance with BS EN 16941-1:2018. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDROP is an application of the storage equation on a continuous daily rainfall time recorded in eight geographic areas (SW England and West, SE England, Central England, NW England and Wales, NE England, S. Scotland, N. Scotland, E. Scotland). Calculated storage and overflow are displayed as exceedance curves. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe output is a one page pdf document containing the : \u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eoptimised storage requirements\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ereduction in mains water usage\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eproportion of time the tank overflows\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ebudget cost benefit analysis (commercial only)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eOverflow Analysis \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCO2 saved\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat we require: \u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003col\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSite Location\/ Site plans\/Elevations\/Drainage Plans showing WC locations\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eRoof type (slate, concrete tiles etc)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eUsable contributing drainage roof area to the rainwater tank \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eType of usage for which rainwater will be used \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eExisting water usage data if available \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eProposed demand from rainwater tank e.g 1m3\/day \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTypical occupancy if relevant to proposed rainwater usage \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWhether a location for a loft\/header tank is available \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eAssumptions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter efficiency is 90%\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eYield based on roof type (Table 1 BS 8515:2009+A1:2013)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSimply email technical with the above details with your order number as the subject line. \u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe pdf will be delivered to the email address you have registered with. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eIf you are combining attenuation with rainwater harvesting please contact us first. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eAllow 10 working days for the output to be delivered from supply of information requested above.\u003c\/strong\u003e \u003cbr\u003e\u003c\/p\u003e","published_at":"2020-12-07T13:12:10+00:00","created_at":"2020-12-07T13:05:51+00:00","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":54858137141632,"title":"Complete","option1":"Complete","option2":null,"option3":null,"sku":"","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"DROP Level 3 Rainwater Harvesting Calculation (Desktop Feasibility) - Complete","public_title":"Complete","options":["Complete"],"price":12000,"weight":0,"compare_at_price":null,"inventory_quantity":-14,"inventory_management":null,"inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]},{"id":54858137174400,"title":"Revision","option1":"Revision","option2":null,"option3":null,"sku":"","requires_shipping":false,"taxable":true,"featured_image":null,"available":true,"name":"DROP Level 3 Rainwater Harvesting Calculation (Desktop Feasibility) - Revision","public_title":"Revision","options":["Revision"],"price":6000,"weight":0,"compare_at_price":null,"inventory_quantity":-1,"inventory_management":null,"inventory_policy":"deny","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.freeflush.co.uk\/cdn\/shop\/products\/DROPoutput.jpg?v=1607347772"],"featured_image":"\/\/www.freeflush.co.uk\/cdn\/shop\/products\/DROPoutput.jpg?v=1607347772","options":["Calculation type"],"media":[{"alt":null,"id":6995641139287,"position":1,"preview_image":{"aspect_ratio":0.674,"height":607,"width":409,"src":"\/\/www.freeflush.co.uk\/cdn\/shop\/products\/DROPoutput.jpg?v=1607347772"},"aspect_ratio":0.674,"height":607,"media_type":"image","src":"\/\/www.freeflush.co.uk\/cdn\/shop\/products\/DROPoutput.jpg?v=1607347772","width":409}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eIf you're considering rainwater harvesting on a commercial scale or trying to achieve \u003ca href=\"https:\/\/www.freeflush.co.uk\/pages\/water-neutrality-in-the-uk-how-freeflush-can-help\"\u003ewater neutrality\u003c\/a\u003e a Level 3 Rainwater Harvesting Calculation may be suitable. Our level 2 analysis is available for free by clicking \u003ca href=\"https:\/\/www.freeflush.co.uk\/pages\/rainwater-harvesting-calculator\"\u003ethis link.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor large or complex schemes where significant economic benefits might be realised or where there is a temporal variation in demand it is suggested that continuous rainfall time series (or simulation modelling) should be used to address this variability in order to optimise the design in accordance with BS EN 16941-1:2018. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDROP is an application of the storage equation on a continuous daily rainfall time recorded in eight geographic areas (SW England and West, SE England, Central England, NW England and Wales, NE England, S. Scotland, N. Scotland, E. Scotland). Calculated storage and overflow are displayed as exceedance curves. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe output is a one page pdf document containing the : \u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eoptimised storage requirements\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ereduction in mains water usage\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eproportion of time the tank overflows\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ebudget cost benefit analysis (commercial only)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eOverflow Analysis \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCO2 saved\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat we require: \u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\u003c\/ul\u003e\n\u003col\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSite Location\/ Site plans\/Elevations\/Drainage Plans showing WC locations\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eRoof type (slate, concrete tiles etc)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eUsable contributing drainage roof area to the rainwater tank \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eType of usage for which rainwater will be used \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eExisting water usage data if available \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eProposed demand from rainwater tank e.g 1m3\/day \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTypical occupancy if relevant to proposed rainwater usage \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWhether a location for a loft\/header tank is available \u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eAssumptions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilter efficiency is 90%\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eYield based on roof type (Table 1 BS 8515:2009+A1:2013)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSimply email technical with the above details with your order number as the subject line. \u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe pdf will be delivered to the email address you have registered with. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eIf you are combining attenuation with rainwater harvesting please contact us first. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eAllow 10 working days for the output to be delivered from supply of information requested above.\u003c\/strong\u003e \u003cbr\u003e\u003c\/p\u003e"}

DROP Level 3 Rainwater Harvesting Calculation (Desktop Feasibility)

Calculation type

£120.00

Maximum quantity available reached.

Description
Documentation
Delivery
Reviews

If you're considering rainwater harvesting on a commercial scale or trying to achieve water neutrality a Level 3 Rainwater Harvesting Calculation may be suitable. Our level 2 analysis is available for free by clicking this link.

For large or complex schemes where significant economic benefits might be realised or where there is a temporal variation in demand it is suggested that continuous rainfall time series (or simulation modelling) should be used to address this variability in order to optimise the design in accordance with BS EN 16941-1:2018.

DROP is an application of the storage equation on a continuous daily rainfall time recorded in eight geographic areas (SW England and West, SE England, Central England, NW England and Wales, NE England, S. Scotland, N. Scotland, E. Scotland). Calculated storage and overflow are displayed as exceedance curves.

The output is a one page pdf document containing the :

optimised storage requirements
reduction in mains water usage
proportion of time the tank overflows
budget cost benefit analysis (commercial only)
Overflow Analysis
CO2 saved

What we require:

Site Location/ Site plans/Elevations/Drainage Plans showing WC locations
Roof type (slate, concrete tiles etc)
Usable contributing drainage roof area to the rainwater tank
Type of usage for which rainwater will be used
Existing water usage data if available
Proposed demand from rainwater tank e.g 1m3/day
Typical occupancy if relevant to proposed rainwater usage
Whether a location for a loft/header tank is available

Assumptions

Filter efficiency is 90%
Yield based on roof type (Table 1 BS 8515:2009+A1:2013)

Simply email technical with the above details with your order number as the subject line.

The pdf will be delivered to the email address you have registered with.

If you are combining attenuation with rainwater harvesting please contact us first.

Allow 10 working days for the output to be delivered from supply of information requested above.

There is no additional documentation for this product

If your query is related to an existing order please email in with your order number in the subject line. If you have a new residential enquiry please consult the online guides before calling as they may answer your question.

The delivery information page is divided into 1. Specific and 2. General delivery information below.

1. Specific Delivery Information relating to product lines

Small items dispatched daily with RM24 ~85% arriving next day
Large items (UK made) typically 5 - 15 working days (Parcelforce/APC etc)

The following items have a 2-4 week lead time:

90l Fountain Bowl
1,000 litre compact underground rainwater tank
SAR40-TOP2 Wastewater Lifting station
2000 Litre Stone Effect Column Water Butt - Sand beige

The following items have a 4-6 week lead time:

100 litre The Prestige 2.0 Wall Mounted Water butt

The following items (EU) are purchased on a pre order basis with a potential 4-8 weeks lead time:

Green Roof sedum tray - pre planted option
160 Litre Wall Mounted Water Butt Rainwater tank - optional Guttermate filter
Agua 190 litre Rain Barrel with Planter
Madison 185 Litre rain barrel with water feature
Castilla 190 Litre Rain Barrel
Cascata 245 Litre Rain Barrel

The following items (EU) are purchased on a pre order basis with a potential 10-12 week lead time:

Hydraloop

2. General Delivery information

We're a Manchester based company and ship to the UK at our standard rates. Please get in touch requesting the delivery surcharge value if you are based in the Highlands or a UK island.

We no longer support ordering from the EU and Northern Ireland through the website. We can support ad hoc orders with limited liability.

Our design and Prestige range is available in the Netherlands, Ireland, Belgium, France, Germany, through our distributors.

Stock items will be dispatched on the day of order, if ordered before 1pm.

Letters are sent 1st class.

Parcels <2kg are shipped with Royal Mail 24 Tracked with the following target delivery times.

Guaranteed delivery can be arranged by advance agreement. This agreement is back to back with the courier and we will not be liable for any delays as per our terms.

A loss/replacement can only be pursued in line with the target delivery times of the courier or once the courier accept loss.

Bulky items (and pallet deliveries) are dispatched within 2-15 working days. We will request a contact number if this has not been provided at checkout.

Some items are made to order (bespoke) and details are given on the listing for dispatch times. If for any reason we anticipate a delay on our normal dispatch time we will contact you to let you know.

Occasionally there are delays. We shall not be liable for any direct or indirect losses, costs, damages or expenses incurred by you or any other person for any delays in delivery.

Missed deliveries where attempted delivery has been made usually result in re-deliveries the following day. The customer is responsible for organising re deliveries by contacting the courier direct.

Parcels/deliveries can only be "left out" if the delivering company allows that option. Parcelforce, for example, do not allow a parcel to be "left out".

We are an environment centric business and as such we try to minimise our waste. Our packaging is usually recycled and/or recyclable and we make efficient use of packaging to minimise wastage.

Covid delivery updates between 12.3.20 and 11.1.21 21 have been archived here.