8 Salisbury Square
Grade A office in a peaceful part of prime Midtown with 6,500ft2 of outdoor space and panoramic views over the London Skyline.
Situated a stone’s throw from the vibrancy of Fleet Street in London, Greycoat and Cheyne Capital’s newly refurbished development 8 Salisbury Square, comprises 156,000ft2 of Grade A office space across lower ground, ground and eight upper levels, adding 35% to its lettable area to accommodate 1,500 people. The secluded square has a dedicated taxi drop-off area, making arrivals convenient for both employees and visitors.
Its welcoming double-height reception hall is modern and contemporary with plenty of room for meeting areas. Designed to offer an open-plan, flexible working environment with ample daylight, large floorplates range from 12,000 to 19,000 ft2. Spacious terraces across five floors are accessible via sliding glass doors, allowing staff to take advantage of 6,500ft2 of outdoor space with far reaching views over London. Additional amenities on the lower ground floors include lockers, a drying room, showers, changing rooms and a 153-secure basement cycle space.
We were appointed alongside TP Bennett to carry out full design duties for MEP, Structures and fire engineering, including advising on the energy strategy and façade performance.
Future Proofing the Building
Our building services team used high efficiency water cooled chillers to reduce energy use and the carefully coordinated heat rejection strategy included discrete low profile dry air coolers, minimising the roof plant height to keep within St Paul’s sight line restrictions. Our structural design was able to retain the original structure and extend it by 35% with minimal strengthening works.
We identified areas of the existing frame with spare structural capacity to allow the numerous side and rooftop extensions and atrium infills to be accommodated.
We also used an innovative load redistribution mechanism below ground floor to avoid the need to strengthening the existing raft foundation. This was possible due to properties of the two existing sub-structure levels which were heavier 400mm thick reinforced concrete slabs.
The superstructure consists of 8 levels of 130mm lightweight metal deck superstructure. The building is designed based on a 1.5m planning grid to accommodate both open plan office space and cellular office.
Focussing on a low carbon design strategy, a Combined Heat and Power Plant (CHP) delivers 75% of the annual heating load. Other energy efficient improvements include low energy LED-lighting with dimmable daylight control features throughout and DC motor driven variable volume fan coil units, which adapt their fan speed to the demand and occupancy. The project has achieved a BREEAM ‘Excellent’ rating.
Peter Downing, Director of Building Services, commented; “We are really pleased to have been involved in transitioning 8 Salisbury Square into a future proof building whilst retaining its character. We have implemented the latest technology and solutions throughout, and the luxury of spacious floors with outdoor space and panoramic views makes this building very flexible to meet the modern occupier and its employee’s needs.”
Charlie Scott, Director of Structures, commented; “We are delighted to have been part of the highly sustainable 8 Salisbury Square project. We are proud of our structural achievement of being able to add 35% additional NIA to the building by carefully adapting its original design characteristics to avoid significant strengthening or reconstruction.”
8 Salisbury Square reached practical completion in October 2017.