15 June 2020
Sponsored by Heathrow Limited
On East Village N06, Mace, the main contractor, wanted to incorporate and utilise prefabrication for as much of the build as possible in order to reduce programme, onsite labour inefficiencies and H&S risks onsite, while driving higher efficiencies and quality. BES, who were the appointed M&E contractor on this project, approached Mace with regard to sub-contracting Alternative Heat (AH) as their preferred shell and core MEP prefab subcontractor in order to meet and deliver on Mace’s prefab aspirations.
AH subsequently met with Mace, the M&E consultants, ChapmanBDSP and BES to provide a much better insight into their design, fabrication and installation capabilities and to discuss potential MEP prefab strategies for this project. Having seen AH's capabilities and visited sites of recently delivered MEP prefab jobs, AH were appointed under the M&E contractor to design, fabricate and deliver the shell and core MEP package for this project, which included:
AH got involved at early design stage development and worked closely with the M&E consultants to co-ordinate with the site-wide MEP services. Through BIM modelling, all carried out in-house, they were able to design prefabricated modules to carry the site-wide MEP services for the riser and lateral modules and likewise design and standardise the prefabricated utility cupboard and skid-mounted plant room solutions in line with the MEP services and plant schedules. Incorporating their prefab solution into the site-wide BIM model enabled them to incorporate these packages in line with the apartment and basement GAs and MEP services to include SVP locations for the utility cupboards.
Carrying out all prefab development in-house enabled AH to share their designs through a shared CDE for approval and sign off. They designed the modules and took full design responsibility in relation to structural loading and lifting calculations of all frames to include expansion, anchoring and fixing calculations and M&E schematics for the plant rooms and PUCs. Their design also incorporated site-wide setting out detail and integration of all prefab frames within the site-wide BIM model.
Aside from a prefab approach, Mace wanted AH to deliver innovation in order to maximise the benefits of prefab. Through design development, they successfully delivered this across all prefab packages as summarised below:
About the Offsite Award:
The SECBE Awards team look for a number of qualities in our Offsite finalist entries including: a systematic approach to the implementation of offsite solutions, the potential of new and innovative approaches, tangible benefits, addressing commercial demands and local community needs whilst also unique and innovative - particularly compared to traditional construction methods.