The project engineers, Martin Johnson Associates, called in Helifix engineers who produced a designed repair programme to stitch the cracks and secure existing masonry, tie it to the new build sections and avoid potential future structural movement.
As work progressed on the new build structure, pairs of stainless steel HeliBars were set into the mortar of predetermined beds. These same HeliBars were also installed bonded, using HeliBond cementitious grout, into channelled out mortar beds of the existing masonry and so encircled the entire building.
The fully concealed Helibeam System secured and reinforced the complete structure, stitching cracks and forming masonry beams that distributed the structural loads while linking the old and the new sections.