Rainsmart Heavy 65T 20 Cubic Metre Flat Pack
|Tonne Loading||65 Tonne|
|Dimension||5400mm (L) x 5400mm (W) x 690mm (D)|
|Size||20 Cubic Metre|
|Capacity||15001L - 25000 Litres|
|Soakaway Depth||Double (690mm)|
This soakaway set automatically qualifies for 10% off through our spend and save discounts!
Our 20 cubic metre 65 tonne heavy soakaway system coming flat-packed.
You will need 81 heavy crates which we would recommend laying 9 crates wide by 9 crates long. This will give you a complete soakaway of 5.4m (W) x 5.4m (L) x 0.69m (D).
A rubber mallet for assembly and a number of cable ties will also be included to join the crates together and to clamp the membrane around your pipe entry points.
Assembly of this set really is a quick and easy process - full instructions are included and you can view a quick video on assembling heavy flat-packed soakaways below.
Size, load and capacity
The dimensions of the complete soakaway are 5.4m (W) x 5.4m (L) x 0.69m (D)
Rainsmart soakaway crates have a void ratio of 95% - this is the amount of free space within the crate structure that can be used for rainwater storage. The capacity of this 20 cubic metre soakaway is an impressive 19,926 Litres.
The vertical crush load capacity of 65 tonnes per square metre ensures that the Rainsmart 65 tonne heavy can be used in commercial scenarios.
Joining crates together
Clips are not required to hold the crates together. No clips on any crate system are structural it is always the side fill on any soakaway installation which adds the stability needed to hold the structure in place. Cable Ties are included with our 20m³ Soakaway Sets and these are used to connect two sides of the complete soakaway together in an L formation (the other crates are then jammed into this corner). These ties are used purely to hold the crates in place until the sand or gravel side fill has been added.
Geotextile & Damp Proof Membranes
We stock a number of membranes which will be needed for your installation - depending on the design. A non-woven geo-textile membrane will be needed in order to ensure that no silt or soil particles enter the crate. If you don't want infiltration to occur from the soakaway you will also need to install an outer layer of damp proof membrane - this will prevent water from leaving the soakaway.
Our membranes come in 4.5 metre widths and can be purchased by the metre or in 100m rolls. For this soakaway we would recommend thay you buy a roll, in order to ensure you have enough coverage, but as a guide you will need approx. 25 metres of the 4.5 metre roll.
Inspection & Cleaning
For best practice we always recommend that a pre-filter such as our Sentinel Silt Trap is used in conjunction with any modular soakaway system. Emptying the filter on a regular basis (this is only a five minute job) will maintain the efficiency of the soakaway and greatly increase its lifespan.
All outward facing crate surfaces of any soakaway should be wrapped in non-woven geotextile membrane, which allows the free passage of water but prevents any soil or sand particles from entering the soakaway, maintaining its long term efficiency.
Flow Control with Attenuation
With the increase in emphasis on SuDS local planning authorities and specifiers are implementing flow control systems to prevent flooding. Through attenuation rainwater is released back into the network, but in order to ensure you aren't passing any potential issues downstream this is done so at a controlled speed. Check out our Flow Controls page for more information about Orifice Chambers & Valves.
Connecting Pipes to Soakaways
The 110mm (or 160mm) drainage pipe is fed into the soakaway via the entry plate. Geotextile membrane should be installed over the opening first and then a small cross should be cut in the membrane at the entry point with a sharp knife. Carefully peel back the membrane, insert the pipe and tape or clamp the membrane tightly around the outside of the pipe to stop the ingress of any soil particles.
For a closer look at Soakaway Crates in general please take a look at our introductory video.
Orders placed by 12.00 noon will be delivered the next working day. Orders placed at weekends will be delivered on the following Tuesday. Read our delivery details for further information.
Our Returns Policy
You can return any items for a full refund (excluding any carriage charges) within 28 days of your purchase - the only exception being specially manufactured items such as fabricated gutter angles or profiles which cannot be returned. All returned items must be unused and in saleable condition. You should include a copy of your original purchase invoice with any goods that you return.
Please note that you are responsible for the cost of returning unwanted items. If you are unsure of how to go about arranging a carrier please let us know so that and we can assist you with this, although you should be aware that we cannot be held responsible for any carrier losses or damages prior to the goods being checked in at our warehouse.
Please click here to download a Goods Returns Form which you should enclose with any returned items. Our full postal address for returns is detailed on the Goods Returns Form.
Once the goods have been checked back into our warehouse we will arrange for the credit/debit card that you used for your original purchase to be refunded. Please allow fourteen days for the refund to be processed. Any items that have been ordered specially are excluded from this guarantee, as are any goods that are delivered ex-works such as sewage treatment plants or rainwater harvesting systems.
Read our returns policy for further details.
Our Returns Policy For Cast Iron Products From Hargreaves Foundry Products
If you wish to return any of our Cast Iron products, then please contact us as soon as possible. We can then liaise with the manufacturer and issue a returns form which will need to be returned to Hargreaves alongside the products. Our cast iron products come direct from Hargreaves Foundry (HF) in Halifax so returns will need to go directly back to them.
All return requests must be notified within 90 days of the goods being dispatched from HF and all damaged items must be notified within 24 hours of receipt of goods. All items must be returned in a saleable condition. Once agreed, the goods must be returned within 14 days from the date stated on the Return Form.
Please note that any bespoke items or specially painted RAL coloured items or Mech 416 Soil System pipes are non-returnable. Please be aware that all returns for Cast Iron Gutters and Soil & Drainage will incur a re-stocking charge of between 25% & 30% for exact details please view our Hargreaves returns policy.
The % charged is based on the net selling price of the original goods - this charge is unfortunately out of our control as it is levied on us by the manufacturer.
For full terms and conditions related to cast iron returns please consult our Hargreaves returns policy.