<Li> Plan layouts to a scale of at least 1: 100 . </Li> <Li> Plant areas to a scale of at least 1: 50 and accompanied by cross-sections . </Li> <Li> The drawing don't indicate precise positions of services, but should be feasible to install the services within the general routes indicated . It should be possible to produce co-ordination drawings or installation drawings without major re-routing of the services . </Li> <Li> Represent pipework by single line layouts . </Li>

Building a technical blueprint of how the new system will work