WHAT WE DO PRODUCTS CASE STUDIES DOWNLOADS GUIDES NEWS CONTACT Twinstore tanks Our patented Twinstore attenuation tanks offer greater performance, reduced footprint and lower cost compared to conventional systems like thermoplastic chambers. HomeProductsStormwater systemsTwinstore Balancing water between pipes Twinstore works by using a system of lightweight, helically wound galvanised steel pipes in a range of diameters (0.6m to 3.6m) installed within a lined excavation and backfilled. Instead of being sealed, the pipe joints are designed to pass water into the granular fill. This balances water freely between the pipes and the backfill contained within an impermeable membrane. Twinstore reduces the overall footprint of the pipe system – a critical factor in many applications – by balancing the void ratio between the tank and the granular fill. The excavation is lined with either an impermeable membrane (GCL or fully welded liner) or a geotextile liner, depending on the site requirements. Water is cleaned as it passes in and out of the tank. Enquire about Twinstore tanks SHARE Key features Like all Tubosider attenuation tanks, Twinstore can be fabricated to an infinite number of layouts. Every system is designed to meet your exact needs. Loadbearing Designed to HA Standard BD12 Easy to maintain Pre-fitted with access shafts and ladders Installation Easy to handle and quick to install Versatile 0.3m to 3.6m diameter pipes Typical applications From superstores to stadiums, our Twinstore system has proved to be the right choice for engineers, specifiers and contractors across the UK. Can be used anywhere where there is a need for attenuation Offers infinite design possibilities, unlike concrete chambers or cellular systems, which are limited by size and shape Available with Trenchcoat polymer secondary lining for more aggressive environments, which offers an additional design life of 50 years Fully recyclable, unlike cells or concrete Reduces footprint, reduces costs Twinstore can offer all the unique strength and design versatility of steel with built in durability to independent industry standards. How To: Lay a Twinstore pipe and join two pipes How to: Guide to backfill installation About us We are the leading UK manufacturer of corrugated steel pipe for WRc approved stormwater management systems, culverts and tunnels. Contact us INFO@TUBOSIDER.CO.UK 01744 452 900 Mon - Fri 9am – 5pm Information MEET THE TEAM WHY CHOOSE TUBOSIDER? TOURS & SEMINARS DOWNLOADS © Tubosider 2021