Roof terraces with glass balustrades
The new building, alongside the canal, houses offices on the ground floor and apartments above. It is a pointed ovoid in plan, with a roof which slopes at 13infinity from seven storeys high at its south-east point to three storeys high at its north-west point.The frameless glazed facade is set in saw-tooth facets to accommodate the curve.
The main structure is a concrete frame with concrete flat slab floors.
The top floors consist of a series of steel framed double-height living rooms alternating with terraces.The living room roofs slope13infinity, clad with terne-coated stainless steel.
The alternating terraces and sloping roofs are unified by a continuous screen of stainless steel mesh which runs above the roof edge and follows its slope.
It is fixed to steel support arms and is designed to encourage plants to climb, creating a natural enclosure to the terraces.
The mesh is cleated to a series of tapered 178 x 203mm T-shaped support arms (cut from 203 x 203mm UBs) which in turn are bolted to 168mm diameter CHS columns at the edge of the roof.
A rail, fixed with brackets to the ends of the T-shaped arms, supports the travelling motor to the cleaning cradle.
The transparency of the facade is emphasised by extending it upwards as a balustrade to the terraces.
The balustrade panels are structurally bolted at their bottom edges and fritted to conceal the floor slab; the top edges of the glass slope to follow the line of the roof.
The glass is protected by a 50mm diameter handrail welded to 75 x 50mm Tshaped balusters with cranked arms.
Where the balustrade slopes below 1,100mm the balusters are fitted with 3mm stainless steel cables.