The Vellore Lane project comprises a new build extensions to side and rear of a Victorian terraced property.
The engineering design issues were significant with the new gable and front elevation hard against the raised highway. We took responsibility for temporary works design as it was central to the feasibility of the scheme, using sheet piles both for temporary works and as a permanent retaining structure.
An added complication was removal of a significant tree in clay subsoil, requiring additional foundation depth and a compressible zone between gable and external retaining wall.
The rear extension also called for novel foundation solution as it was hard against boundary wall which also retained our clients site. The design solution was a beam and base system with localised excavation to below the base of the wall and cantilevering ground beams to the face of the boundary structure.
Internal design included both steelwork designed and detailed to accommodate variable roof geometry and glulam timber framing to new roof structures linking old and new.
