Polystorm PSM1A 190L Storm Soakaway Crate

Description

High-strength, Modular Soakaway Crate

The Polystorm PSM1A 190L Storm Soakaway Crate supports efficient surface water infiltration and attenuation. With a high void ratio and excellent compressive strength, it’s ideal for sustainable drainage systems (SuDS), helping manage excess rainfall and prevent localised flooding.

Key Features and Benefits

• High Load Bearing Strength
  Withstands up to 61 tonnes/m² vertical loading—suitable for landscaped areas and load-bearing applications when installed correctly.

• Sustainable and Durable
  Manufactured using specially selected recycled materials. BBA-approved with a creep-limited life expectancy of 60 years.

• Efficient Water Management
  95% void ratio enables rapid water capture and gradual infiltration, reducing pressure on traditional drainage.

• Modular Design
  Lightweight and stackable, with integrated inlet/outlet points and 3D flow capability for flexible configurations.

• Versatile Application
  Suitable for infiltration, retention, and attenuation systems when wrapped in an appropriate geotextile membrane.

Technical Specifications

• Capacity: 190 litres

• Dimensions: 1000mm (L) x 500mm (W) x 400mm (H)

• Weight: Approx. 9kg

• Material: Recycled polypropylene

• Colour: Black

• Compressive Strength: 61 tonnes/m²

• Void Ratio: 95%

• Approvals: BBA certified

• Life Expectancy: 60 years (creep-limited)

Frequently Asked Questions (FAQs)

Q: What type of geotextile should be used with this crate?

A: Use a non-woven geotextile for infiltration systems to prevent soil ingress while allowing water to pass through.

Q: Can this crate be used under driveways or trafficked areas?

A: Yes, if installed with appropriate cover depth, backfill material, and in line with Polypipe’s guidance for trafficked applications.

Q: How many crates are typically needed for a domestic soakaway?

A: This depends on roof area and soil infiltration rate, but 3–6 crates are common for average-sized properties.

Q: Are these crates suitable for attenuation systems?

A: Yes, when lined with an impermeable membrane, they can temporarily store water for controlled discharge.

Q: Do the crates require any specialist tools for installation?

A: No specialist tools are needed. Crates interlock manually and can be installed by competent groundworkers.