Current best practice site installation techniques were established before an extensive market research and product evaluation exercise took place. Practical experience already obtained with product trials on public health risers and final pipe run outs onto sanitary appliances for a number of larger healthcare and penal detention projects was also included.

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Range of products included metallic tube, plastic extrusion and composite/ multi-layer pipework systems and covered issues such as pipe sizing considerations, material stability, system performance and predicted service life as part of a company-wide Continuous Process Improvement initiative resulting in a product comparative guidance matrix being published and more cost effective site installation practices widely adopted. CPI development techniques allow new innovation opportunities, training, skills and ideas to be evaluated and then directly measured against established building processes, products and tooling techniques so identifying added value without compromising consistent long term build quality.

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Research found that the optimum design solution could result in a combination of different installation materials and compatible jointing techniques being used together matched to particular site access requirements and ongoing maintenance considerations. The knowledge gained was used to ensure that maximum use could be made of prefabricated multi-service pipework modules on the Heathrow T5 project giving adaptability for use on main shell & core services distribution routes as well as subsequent hook up provisions for the fitting out of tenant retail space.