You’ll find soakaway crates in an assortment of sizes here at Cotterill Civils – but do you know which one to choose? Knowing which size soakaway you need can be easier said than done but, relax, our team is always on hand to guide and advise you. The most common size for domestic use is… Continue reading How do I know what size my soakaway needs to be?
A silt filter chamber – also known as a ‘silt trap’ – is a basin that is set upstream of a soakaway crate. It is designed to prevent silt, soil, sediment, metals or pesticides from entering and damaging the water storage system, and acts like a filter. How? Well, a silt chamber holds the water… Continue reading What is a silt filter chamber and why do I need one?
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. Here we take a closer look at attenuation tanks – covering what they are, what they’re used for and how… Continue reading How do attenuation tanks work?
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… Continue reading Install of a stormwater attenuation solution for a car park at an NHS Hospital
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. … Continue reading What’s the difference between a Vortex and Orifice Flow Control system?
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… Continue reading Why English rivers fail pollution test?
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… Continue reading Beginner’s guide to soakaway crates
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… Continue reading Beginners Guide to Silt Traps
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… Continue reading What are the benefits of SuDS?
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… Continue reading How to undertake a water table test?