Loampit Vale, constructed by Barratt Homes, is an extensive regeneration scheme that will transform the centre of Lewisham. The £150 million scheme, delivered in partnership with the London Borough of Lewisham, will deliver a state-of-the-art leisure centre along with 788 mixed tenure homes, commercial units and a new cultural quarter. Due to the company’s significant track record, FDS was appointed to provide a total end-to-end solution for a fan assisted smoke venting system and associated smoke detection system for the residential common areas, along with a car park ventilation system.
FDS utilised an innovative approach to system design and installation to provide:
- Significant cost savings in the materials and systems used as a result of FDS’s end-to-end service
- Improved environmental credentials – the Impulse system installed in the car park removes cars’ carbon monoxide emissions.
- A venting shaft schematic that maximises the space available, assisting in meeting architectural aspirations and justified by utilising FDS’s technically advanced CFD (Computational Fluid Dynamics) modelling techniques
For Block A the expert team from FDS designed a smoke venting system to serve all twelve storeys with fans fitted at roof level on the top of the shaft and a sliding smoke vent fitted at the head of the stair.
Meanwhile for Blocks B to D, the team designed an identical system, to serve eight, fourteen and nine storeys respectively, each with the same roof level fan and sliding door at the head of the stair.
For all of the four blocks the FDS team also used the company’s knowledge of fire risk and behaviours to design a smoke detection system and corridor environmental system, integrated with the fan-assisted smoke venting system and the building’s BMS (Building Management System). The mechanical smoke extraction system incorporated a smoke detection system in the common corridors which would activate the system automatically to operate on the affected level only.
The corridor environmental system was based on mechanical extraction of heat from the ceiling void into the smoke shafts using motorised dampers above the ceiling void that will be motored open whilst the environmental system is operational. This system is linked to both a timer and a thermostat ensuring that it is operational between the hours of 6am and 8pm during the summer and/or if the temperature reaches the pre-set threshold. Should smoke be detected in any level the environmental system would revert to the designed smoke ventilation system.
The FDS-developed fan assisted system is proven to outperform standard code-based systems: in the event of a fire it will rapidly remove smoke to aid the means of escape and protect the staircase for fire fighting services. The Impulse system installed in the underground car park removes air pollution and smoke via extract fans, providing more energy efficiency, space and cost savings than a traditional ducted system.
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