The existing multipurpose residential and office building at 135 Bishopsgate is one of a trio extending 900 feet (274 metres) along one of the City’s major thoroughfares, sitting on a raft over the easternmost platforms of the UK’s busiest railway station, Liverpool Street.A dynamic refurbishment of the property has transformed the two-story reception area, replacing the original balustrading and staircases with a new public realm of landscaped steps and ramps for improved access. Three terraces have also been created on levels 7, 8 and 10 to provide 3,500 square feet (325 square metres) of shared rooftop amenities for occupants.Overcoming wind upliftGiven the exposed position of some terrace areas, wind uplift was regarded as a potential challenge. To overcome this, tie-down clips were used to secure the decking to the Raaft support structure which incorporated extruded aluminium joists and adjustable pedestals to ensure stable, level walkways and seating areas.Soft landscaping was contained in planters, custom powder coated in a variety of shades including RAL 7021, RAL 7048 & BS04 E50 - PINK to complement those of the building. Raaft Floor Structure Support Panels were incorporated within the terrace system to provide a sturdy, permeable platform for the planters without penetrating the roof slab’s waterproofing layer.