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The Leadenhall Building

Client
British Land and Oxford Properties
Sector
Commercial
Services
Building servicesFM packages
Duration
2011-2014

Full Project Details

Crown House Technologies (CHt) played a fundamental role in the innovative construction methodology of this iconic building.

In addition to the delivery of the complete building services and FM packages throughout the structure, CHt  was instrumental in the design,  manufacture and delivery of significant modular elements of the mechanical and electrical services.

Utilising our Design for Manufacture & Assembly (DfMA) strategy, we designed the major elements of the building’s services to be manufactured off site at our factory in the West Midlands.  This included not just the structural components of the service core, but also modular plant and control rooms as well as a significant number of riser assemblies.  Once completed and delivered to site, our expert teams led their assembly and final commissioning.

The challenge

With its busy inner city location and  the structure’s site footprint having no lay-down areas, a key challenge for CHt was to develop  an offsite approach. Particular consideration was given at the design development / technical design stages with regard to the logistics element, so that the modules would be designed in relation to maximum transportation limitations, onsite access and our lifting strategy, so that a seamless process was in place to support the construction schedule.

Our approach

We engineered a model digitally to interrogate the design to a high level of detail, in conjunction with the client and design teams. This improved our understanding of the ambitious structure and built in flexibility in order to adjust the permanent works design.

Using our Design for Manufacture and Assembly (DfMA) philosophy, modular components were delivered and installed on site, avoiding the risks of traditional onsite methods to offer the benefits of lean manufacturing, time, safety and sustainability. Site logistics were digitally coordinated with overnight deliveries scheduled to reduce disturbance and traffic.

The engineering behind our delivery

The main plant situated within the basement and attic levels includes central chilled water plant and fully packaged cooling towers. HV standby generation consisting of four  sets situated at levels 47 and 48 along with boilers and gas booster sets. The programme was reduced as the high level on floor service installation and services within the risers were then fully modularised and delivered and installed with the steel frame of the building. On-floor plantrooms were completed and tested offsite prior to delivery, then positioned for module connection.

This helped reduce risk during on-site commissioning and ensured a high quality snag free installation.