Design, procurement and installation of a full FM Global sprinkler system.
Following an FM Global fire risk report, Osborn Associates were appointed as fire engineers to design, procure and install a sprinkler system and associated trade works for the protection of all ASOS assets within Greater London House.
ASOS occupy the entire first, second and sixth floors, together with parts of the lower ground, ground and fourth floors. A number of other tenants currently occupy the remainder of the building.
The company provided a fully hydraulically calculated design for both statutory approval and the client's insurer, FM Global. Full-time site management was provided throughout the installation period to administer the CDM Regulations and ensure safe, incident-free working across the live building.
Retro-fitting a comprehensive sprinkler system into an iconic, occupied building.
Greater London House is a live building with multiple tenancies across six floors. ASOS' occupancy comprises offices, open workspaces, film and photographic studios, cafe and canteen areas and a gymnasium - each presenting different fire protection requirements and operational constraints.
Retro-fitting a comprehensive sprinkler system into this environment required careful out-of-hours working to minimise disruption to day-to-day business. Workspaces were cleaned and cleared of materials before each working day to maintain normal operations throughout the installation period.
Greater London House is an iconic historical building, demanding care and attention to the building fabric and internal architecture at every stage of the project. The integration of over 4,000 sprinkler heads, a new pump house and a 210m3 water tank into this sensitive environment required meticulous coordination with the building's existing services and structure.
Seamless integration with existing fire alarm and security systems.
The sprinkler installation was fully interfaced with the building's existing fire alarm and security systems, ensuring that the new fire protection measures worked cohesively with the building's broader life safety infrastructure. The scheme incorporated 15 wet and 1 dry isolating zone valves, allowing sectional isolation for maintenance and future tenant changes without disrupting protection to the wider building.
