3D Technical Design’s (3DTD) heat network specialist designers were engaged by Engie to coordinate the design of a highly complex heating and cooling network extension around dense rail assets (Angel Lane) and design a connection to the on-plot developments such as Unite Student Accommodation and Moxy Hotel. In addition, our designers led the design and technical management of the Genesis bridge crossing which connected an existing plot, that was supplied by temporary boilers to the Olympic Scheme.
The Angel Lane route included the design and installation of DN250/400 heating and DN300/450 cooling pipes beneath Network Rail tracks, through pre-installed concrete sleeves ~4m deep on adjustable spider brackets, terminating in a utility chamber on the other side of the tracks, then running parallel to HS1’s Stratford International Line. The pipes then entered Angel Lane Road bridge to cross a further Network Rail track through pre-installed steel sleeves and exited the bridge to the on-plot development site through pre-drilled bore holes. The design was pivotal to securing third-party technical consents, and Highways were delighted that its accuracy supported the contractor’s efforts in reducing their programme from 12 weeks to 8.
As part of the extremely challenging Olympic Park project, district heating and cooling pipework was installed in the HS1 area. The pre-insulated pipes were installed on tailored bracket supports, each specifically designed to accommodate the pipes along this section of the route.
The project involved liaison with clients and subcontractors, reviewing, coordinating and governing design supplied by third-party engineers including but not limited to temporary works design, stress analysis of pre-insulated pipes and support brackets, and fixing details.
The Genesis project overcame several technical, design, and coordination challenges, including the installation of DN250/450 pre-insulated district heating pipes on a support bracket fixed to the parapet wall of the bridge such that the design complied with H&S and maintenance requirements. Furthermore, to meet the design criteria set out by the asset owner, the lateral and horizontal forces transmitted to the bridge had to be reduced to a minimum to avoid exceeding the limited load capacity of the structure. The technical design solution introduced within the project included the application of double slide guides to allow the movement of the pipes resulting from thermal expansion.