When constructing a new car park, a stormwater management system should be considered to prevent localised flooding. As one of the UK’s leading stormwater specialists, we are experts in this field. Here is a recent example of a stormwater attenuation system we supplied and installed for construction company, Henry Williams and Son (Roads) Ltd, when
Vortex Flow Control Valves and Orifice Flow Control Chambers are used to support the management of Sustainable Drainage Systems (SuDS) and the sewer infrastructure as part of a designed attenuation system. Both systems are highly effective but if you’re considering which one to use on your project, what’s the difference? Here’s a useful guide.
Looking after our waterways has never been so critical – it’s something we’re extremely passionate about here at Cotterill Civils. Only last week we were shocked to hear that all English rivers failed to meet the Environment Agency’s quality tests for pollution. The data revealed that just 14% of English rivers are of good ecological
One way to manage the flow of stormwater runoff and reduce the risk of flooding is through the use of soakaway crates. Here’s a useful guide to what they are and how to install them: What is a soakaway? There are two types of soakaways. A natural soakaway, which is essentially a hole dug
So you know you need to install a silt trap but you’re not exactly sure what its purpose is. To bring you up to speed, we’ve created this simple guide. What is a silt trap? A silt trap is a ‘basin’-type device that is placed in the upstream of a soakaway crate. Its main job
Over the last few years, the UK has experienced some of the wettest seasons on record. And with meteorologists predicting that such extreme storms are set to become even more commonplace, Sustainable Drainage Systems (SuDS) have never been so important. How SuDS prevents flooding? SuDS plays an important role in managing surface water runoff in
With water levels fluctuating more erratically in recent years due to an increase in extreme wet weather, it is vital that water table levels are reviewed when considering building structures. What is a Water Table? The water table is the surface of a body of unconfined groundwater at which the pressure is equal to that
Stormwater attenuation tanks are ideal if you’re looking for a bespoke and cost-effective solution to control the flow of water back to a watercourse or drainage system. They are commonly used for larger commercial applications. What is an Attenuation Tank? Stormwater attenuation tanks provide a storage system for rainwater & surface water. The stored water
Stormwater Crates are essentially plastic modular water cells and work in a similar way to a natural soakaway – they are perfect for groundwater infiltration. Why are they popular? Used in both commercial and domestic projects, they provide you with a simple, cost-effective and easy to install solution to control surface water and prevent flooding.
When determining the number of crates you need to use for a soakaway crate system you need to take into account the many variables. Here’s a guide to the things to consider. Variables you need to consider How many soakaway crates you need will depend on variables such as space available, soil type and incoming/outward