Aliaxis is proud to support the official launch of the new CIBSE TM70:2025 - Tall Buildings Drainage Design, a landmark publication setting a new benchmark for performance-based drainage design in high-rise buildings.
Part of the new CIBSE Guide G, TM70:2025 represents the result of decades of academic research, industry collaboration and full-scale empirical testing. Developed through collaboration between members of the SoPHE Technical Committee, academic partners, professional engineers and key industry contributors, including Aliaxis, it translates complex research into practical engineering guidance for real-world application. The publication builds on over 3,000 design scenarios and testing at Aliaxis Training and Research Centre, based at the National Lift Tower, Northampton, with results proven to be 98% accurate for simulation modelling.
As a trusted technical expert in tall building drainage, Aliaxis is proud to have contributed to TM70:2025 and to be sponsoring the launch event as it continues to drive industry standards forward.
David Thomas, Head of Technical Support Services, at Aliaxis UK said: "We are incredibly proud to have contributed to TM70:2025. This guide represents a major step forward for the industry, providing practical, research-backed guidance to engineers and designers. It addresses critical public health and safety concerns, introduces commissioning tests for drainage systems, and helps engineers design beyond minimum regulatory standards. At Aliaxis, we are committed to advancing industry standards and supporting the next generation of high-rise projects."
As part of its contribution to the industry, Aliaxis has developed the new DWV Drainage Checker – a digital tool that enables engineers to design and verify hydraulic performance in around 15 minutes, replacing a previously manual process that could take several days. TM70:2025 also introduces mandatory commissioning tests to ensure drainage systems perform as intended, strengthen compliance and create a clear “golden thread” from designers to end users.
Event Details
The CIBSE TM70:2025 launch event will take place on December 8 in Central London. It will feature presentations from the publication’s authors, including Professor Michael Gormley (Heriot-Watt University) and Jassim Daureeawo (SoPHE Technical Chair). The presentations will be followed by a networking reception.
During the event, attendees will have the opportunity to:
- Gain insights into the latest research and best practices in high-rise drainage design
- See the DWV Checker demonstrated live
- Explore the practical applications of TM70:2025 and how it can support improved design and safety outcomes
Seats are limited, and early registration is recommended. Please secure your place via the CIBSE event page.