3‑in‑1 modular steel tanks for construction projects

Our 3-in-1 system combines the attenuation tank, flow control manholes, and carrier pipework into a single prefabricated solution. Designed to be lowered, connected, and backfilled efficiently, it can be installed up to 25% faster than traditional systems, helping reduce on-site labour and keep programmes on track.

Engineering support is available from design through supply. Contact our team directly or fill in the form, and we’ll get back to you.

Certifications & Standards

ISO 9001
BBA admission
WRC approved

Why our customers choose ViaCon UK 

High load capacity

High load capacity for trafficked areas and heavy vehicles

CD375 suitable

CD375 suitability for highways and heavy traffic

Design flexibility

Design flexibility for site constraints, with access shafts for easy maintenance

Integrated drainage

3‑in‑1 system (attenuation tank + flow control manholes + carrier pipe) saves time and money

Technical support

Technical support across design, delivery and install

Environmentally Friendly

100% recyclable steel and up to 70% lower CO₂e vs other materials

The 3‑in‑1 concept

How the 3‑in‑1 system streamlines project delivery

  • Fewer interfaces: one coordinated package (attenuation tank, flow control manholes, carrier pipe) 
  • Faster installation: modular sections and a predictable assembly sequence 
  • Built for site realities: bespoke solution for individual site conditions
  • Integrated drainage options: simplify design, installation and O&M handover

 

Contact our team

Case studies

Complex deep-depth, high-volume soakaway tank solution

See the case study

Harvesting rainwater for a sustainable cooling solution

See the case study

Greenhead School: 6,541 m³ installed in 12 working days

See the case study

Technical resources

Download our resources

Installation guides, technical data, EPDs, Vortex separators, Stormwater Solutions brochure

Downloads

3‑in‑1 Solution

3‑in‑1 overview (concept, benefits, typical layouts)

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FAQ

The ViaCon 3-in-1 system delivers roof drainage, surface water collection, and attenuation in one prefabricated pipe-run. Replacing multiple separate elements with a single system helps reduce installation time, on-site labour, and overall construction cost. 

ViaCon attenuation tanks can be designed for trafficked areas and highway applications in accordance with Eurocodes (LM1–LM3) and, where required, BS 5400 HA/HB loading, including a 100 kN single wheel load. 

Yes, we do both. We can supply only, or supply and install. 

Installation time varies depending on project size. Smaller projects can take a day, while larger ones may take a couple of weeks. Compared to other solutions, ViaCon tanks are quick and simple to install. 

Steel is 100% recyclable. With design optimisation and material choices, we can achieve up to 70% lower CO2e vs other materials, with robust design life and predictable performance.