O’Dwyer Steel were involved in providing the galvanized steel structure for the new contemporary and visually striking roof at 10 trinity Square, London. The hyperbolic paraboloid roof structure is curved in two directions and has a central ridge line of variable height that falls into the gutters. The steel structure provides continuous support for a panelised zinc rain screen cladding system as the outer skin and also a separate weathered roof below. The curved profile is accommodated by a variable height steel support system. The role of O’Dwyer Steel involved the provision of detailed steel drawings, workshop fabrication, galvanising and delivery and site installation.

Location: 10 Trinity Square, London Project

Size: Tonnes: 500.

No of assembled members: 3000.

Features: O’Dwyer Steel were provided with a 3-D Revit model which included the proposed roof support structure and the modular units below. BIM was used throughout the design process.

Construction: A large volume of square hollow sections, posts and parallel flange channel railscombined with a quantity of Universal Beam and column sections. SHS columns site fixed to volumetric modulus units below. A complicated web of SHS, RSA angle bracing, turnbuckle and tensionable rope was installed to transfer lateral loads back to vertically braced bays. A complex system of tensioned wire rope and turnbuckles was also formed to minimise any take-up movements when loads are applied.