About CRM

CRM Rainwater Drainage Consultancy is an independent consulting company, offering:

  • Design, inspection, expert witness, testing and product development services

  • Software sales and bespoke software development

  • Physical modelling services to the water industry.


CRM personel

Dr Malcolm Wearing Dr Malcolm Wearing BEng, PhD, CEng, MICE, MCIWEM, Managing Director of CRM, is experienced in design and inspection of conventional and siphonic rainwater systems as well as designing and performing physical test programmes. He sat on both the UK and US Standard development panels for siphonic drainage as an invited expert, and is acknowledged as one of the foremost authorities on conventional and siphonic drainage in the UK.
Ray Baker Dr Ray Baker BSc, MSc, PhD, CEng, MICE, MCIWEM ran the Salford University hydraulics consultancy in the period 1983-1998, and in latter years was engaged in research work in the field of siphonic roof drainage. He held the post of senior lecturer in hydraulics until he joined CRM full time in September 2002. He is experienced in physical model testing, software development and drainage design.