This drilling and sawing contract was for a new developer client. Our works were to assist with the conversion of retail units and vacant spaces above into twenty four new apartments.
We were initially called in to form six openings in the heavily reinforced floor slabs for two new lift shafts to go from ground floor to the roof. Due to site conditions and very restricted access for heavy machinery into a lot of the areas and roofs, diamond stitch drilling, diamond handheld ring sawing and handheld breaking methods were selected to form the lift openings. The floor slabs were 375mm thick reinforced concrete topped with screed and pretty heavily reinforced, but our 3-phase electric ring saw cut through the concrete with relative ease.
On this project, we also diamond drilled a lot of holes for new services and employed stitch drilling along with hydraulic bursting to remove redundant concrete footings to form the lift pits.
