Vertform® is an innovative system developed by AHS that offers a unique solution for constructing manhole inverts.
It consists of a set of reusable pre-formed components that are installed to create a mould, allowing the creation of a watertight manhole base without requiring skilled labour.
Concrete is poured and set around the mould in a single step, giving a consistent and high-quality finish. The Vertform® system is highly versatile, allowing for the creation of custom shapes and angles to fit specific project requirements, and is suitable for pipelines ranging from 375mm to 1,800mm.
The system’s ability to achieve custom shapes and angles allows for a fully bespoke solution that can cope with a wide range of challenges, such as changes in pipe diameter and multiple lateral connections.
Vertform can also be used to form either double step irons or toeholds for manhole access. A box-out frame can be used to attach additional shuttering and create a landing area, providing safe access to shallow manholes.
Manhole inverts with 3-way or even 4-way connections can also be formed at invert-to-invert or soffit-to-soffit level.