How do you install a Polystorm?
Polystorm: an 8 Step Guide
- Select the right Modular Cell. Polystorm Lite – PSM2.
- Select access if maintenance and inspection is required. Polystorm Access.
- Select if treatment is required.
- Select the right wrap.
- Add Flange Connections.
- Venting.
- Associated upstream chambers.
- Associated downstream chambers.
What is a Polystorm Soakaway?
Polystorm-R has been designed to provide surface water retention, surface water attenuation or surface water infiltration as a soakaway solution at a variety of depths in trafficked and loaded areas. It has a 61 tonnes/m² compressive strength and is manufactured from over 90% recycled material content.
How do you install a plastic soakaway crate?
Follow these 6 simple steps to install soakaway crates – both quickly and correctly:
- Step 1 – Create space.
- Step 2 – Prepare the crates.
- Step 3 – Prepare the base.
- Step 4 – Hook up to the drainage system.
- Step 5 – Cover the crates.
- Step 6 – Replace any ground that was removed.
How deep should a soakaway crate be?
Soakaway Depth You should allow for 150mm base, side and top fill, plus a minimum additional 150mm top cover for garden applications (350mm for light traffic applications).
How many Polystorm crates do I need?
How many soakaway crates do I need?
| Effective Roof Area (Square Metres) | Size of Soakaway Required (Cubic Metres) | Number of Polystorm Crates Required |
|---|---|---|
| 25 m² | 0.5m³ (500 litres) | 3 |
| 30 m² | 0.6m³ (600 litres) | 3 |
| 40 m² | 0.8m³ (800 litres) | 4 |
What is a silt trap?
A silt trap is a method of preventing silt from entering and damaging a soakaway, attenuation or sewer system. These systems are designed to collect and remove surface water, either by emptying it into the sewer system, or by allowing it to drain back into the ground below.
Do you fill soakaway crates?
To secure the crates, remember to add side and back-fill to the crates. This can be done using sand or pea shingle, which needs at least six inches to be placed around the sides and on the top of your crates.
How deep does a soakaway crate need to be?
What goes on top of soakaway crates?
Always cover the soakaway crates with a geotextile membrane to maintain the performance of the system. A layer of sharp sand or pea gravel should be put into place before the crates are lowered in, then the geotextile membrane should be fitted inside the hole, ready for the soakaway crates to sit on top of.
Where would a silt trap be installed?
A silt trap is a ‘basin’-type device that is placed in the upstream of a soakaway crate. Its main job is to prevent any silt, soil, sediment, metals or pesticides (everything unwanted) from entering your water storage system.
How do you stop silt from going down the drain?
Do you put gravel in soakaway crates?
A layer of sharp sand or pea gravel should be put into place before the crates are lowered in, then the geotextile membrane should be fitted inside the hole, ready for the soakaway crates to sit on top of. Some soakaway crates have a separate section in place for the stormwater pipe to be connected.
Do you need a trap on a soakaway?
Although newer modular/crate soakaway systems are much better at avoiding silt problems, they are still susceptible to blockages and damage. Silt traps remain the best method for protecting soakaways by capturing silt further up the drainage system.
Do I need a silt trap?
Why Do I Need A Silt Trap? Silt traps are an essential element of any efficient surface water run-off system. When silt from draining surface water gets into a drainage system it can affect its ability to function properly. Clogged pipes or silted soakaways can cause a build-up of this surface water.
What should you use to stop site run off sediment from going into the storm water drain?
Use barriers (for example, sediment fences or filter strips) to trap sediment before it can wash away. Divert stormwater away from the disturbed area of the site and install the final stormwater drainage system as early as possible during construction.
What do you wrap soakaway crates in?
The correct fabric for wrapping soakaway crates is a high-quality, non-woven geotextile, such as Draintex from the Product That Works range of professional landscaping products.
Can polystorm Lite be used as a soakaway solution?
Although Polystorm Lite is designed for non-trafficked applications for various surface water solutions such as surface water rentention, surface water attenuation or surface water infiltration as a soakaway solution.
How do you build a soakaway crate system?
This can be done using sand or pea shingle, which needs at least six inches to be placed around the sides and on the top of your crates. The last step is to replace any ground and turf that was removed or any other relevant surface topping. Your soakaway crate system is now ready for action!
What is polystorm access and how does it work?
Polystorm Access provides a 1m x 0.5m vertical shaft within a Polystorm geocellular structure to enable surface access for remote camera inspection and maintenance activities such as flushing and rodding.
How do you attach a storm water pipe to a soakaway?
Some soakaway crates have a special section in place for the storm water pipe to be attached to. If this isn’t the case it can be positioned next to the crates and held in place by the filler. Either way, this also needs to be covered with the same membrane.