When determining the number of crates needed for a soakaway crate system, you need to take several variables into account. Here’s a guide to help you understand what to consider before starting your project.
Variables you need to consider
The number of soakaway crates you’ll need depends on several factors, including available space, soil type, and inflow/outflow rates.
A qualified groundworker or installer can perform a percolation test to assess soil conditions. For example, clay-based soils are dense and slow to drain, while sandy soils allow water to disperse more freely. The test results determine the required soakaway area (in square metres), which helps calculate how many crates are needed.
Soakaway crates are modular, meaning they can be stacked vertically or arranged horizontally to create larger systems. Each manufacturer produces crates in different dimensions, so the brand and model you choose will directly affect the number required for your attenuation design.
Always seek approval
Before beginning any works, it’s recommended to seek approval from your local planning authority. Many soakaway systems must be designed to handle a specific “design storm” and duration to meet local SuDS or building regulation requirements.
Expert advice
At Cotterill Civils, we supply — and, if required, can also install — soakaway crate systems. Our team can advise you on how many crates you’ll need for your specific site conditions and application.
For expert guidance, call us today on 0121 351 3230.
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