Over the last couple of weeks we have completed the steel frame which will create the skeleton for the building.  This now enables us to start the external walls; these will be built around the frame to form the external envelope.  We have also started forming the floor support slab.  This is a concrete slab 25cm thick and sits on the ground beams covering the whole floor.  This is not the finished floor level – it provides a support for the main flooring and internal walls.