Continuing Professional Development Offsite M&E manufacture
CPD test paper
Offsite M&E manufacture The CIOB requires members to assess and fulfi l their own CPD needs. Members can therefore choose to study the CPD articles published in CM as a valid part of their personal record of CPD activity. To complete the questionnaire printed below, members should log
Above: BBES delivered pier served stands for Terminal 2 new satellite pier Below: An air bridge connects to Phase 1
Offsite checks in at Heathrow Airport
When a building has to be constructed on a constrained site surrounded by the airside operations of one of the world’s busiest airports, traditional construction methods sometimes have to take a back seat. Terminal 2’s new satellite pier is being delivered thanks to BBES’s Modular Systems + facilities and knowhow. Representing another milestone in the modernisation of Heathrow Airport, as well as being the largest ever airside project at the airport. Set to be fully operational in 2014, the
new £2.5bn Terminal 2 facility has an overall construction cost of £560m. Procured by Heathrow Airport Limited (HAL) in two phases, Balfour Beatty delivered six of the pier served stands in 2010 as part of Phase 1 with Phase 2 currently under construction by an integrated project team from Balfour Beatty delivering the remaining 10 stands ready for completion in October 2013. From the outset, space was at a premium
and traditional methods for the installation of the building services and associated works were potential logistical nightmare especially considering that the entire site is locked down under an airside security regime. Faced with challenging airside constraints and the client requiring all projects to be constructed using a Design for Manufacturing and Assembly (DfMA) approach, BBES’s offsite pre-fabricated assembly of the main service modules has greatly aided the sustainable delivery of the Terminal 2B departure pier as well as signifi cantly increasing project effi ciencies and offering the least disruption to wider airport operations. All the
mechanical,
electrical and public health (MEP) modularisation requirements were incorporated into the production design by the BBES design team. Detailed development of the coordinated working drawings were then issued, in 3D model form, incorporating all BIM material
information, to the company’s Modular Systems + offsite manufacturing facility. The MEP solutions for Phase 2 were
comprehensive and included everything from multiservice risers, each of which could be installed in one night compared to six weeks using a traditional approach, to vertical circulation core air handling plant rooms, which were transported across the airfi eld overnight and structurally fi xed into position in two days each, a massive saving when compared to 13 weeks for a traditional installation. The Apron Service Corridor multiservice modules were delivered in sections and formed the spine of the services distribution while a complete major mechanical plant room could be delivered in eight sections and installed in two weeks, shaving 24 weeks off a traditional installation. Further solutions included multi-service modules for the full length of the 250m long passenger tunnel as well as modular wiring, pipework and containment for all substructure areas. In all, our Modular Systems + facility supplied 549 modules of various types with a combined length of around 3km. With components being manufactured and delivered for immediate installation in the building, our offsite approach has saved more than 115,000 M&E operative site hours along with associated build effi ciencies, consistent quality, waste reduction and safer working conditions.
on to
www.construction-manager.co.uk then click on this month’s CPD article. Scroll down to the end of the article, and you will fi nd a link to the online questionnaire (see example pictured below) and the fi ve multiple choice questions printed here. Select your answers, fi ll in your contact details, then click “submit”. If all fi ve questions are answered correctly, you will be invited to download and print a PDF document confi rming your successful completion of the questionnaire. If one or more questions is answered incorrectly, please reread the article and try again, pressing “submit” to resend the amended form.
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1. Using offsite products, project managers can generally expect a saving over traditional installation of: ● 25% ● 40%
● 15% ● 10%
2. For transportation, vehicle size and highway regulations commonly restrict load sizes to: ● 14m x 5m x 3m ● 15m x 3m x 5m
● 18m x 4m x 4m ● 14m x 4m x 4m
3. On the Queen Elizabeth Hospital Birmingham project offsite prefabrication of the M&E elements reduced total man hours by: ● 452,540 hours ● 254,450 hours
● 183,840 hours ● 382,530 hours
4. Preformed conduits at HMP Oakwood saved the onsite team the task of: ● Drilling 60,000 holes ● Drilling 20,000 holes
● Drilling 70,000 holes ● Drilling 150,000 holes
5. At Phase 2 of Heathrow’s new Terminal 2, traditional installation of air handling plant rooms would have taken: ● 30 weeks ● 13 weeks
● 5 weeks ● 18 weeks
manufacture of key importance. Maximising project effi ciency — both on and off site — the process was monitored weekly to ensure the project could be handed over on time. All components were fully tested at the BBES facility as part of quality control procedures. Every component produced was provided with complete traceability to ensure absolute quality is delivered every time. CM
Steve Tovey is director of ModularSystems + and Site Services
www.balfourbeattycsuk. com/capabilities/modular-systems-plus/
CONSTRUCTION MANAGER | OCTOBER 2013 | 49
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