At the existing Gand vgs school there is currently new construction underway (new construction D).The remaining part (Building A, B and C) which is at present in use, some sections will be demolished and completely redeveloped, and some sections shall be redeveloped with windows and internally demolished and redeveloped until the construction shell remains. This enterprise comprises site, concrete and structural work for buildings A and B with rigging and operations for separate works, rigging and operation of electrical power, water, site fencing and construction lift. Digging and piling works. Demolition works in load bearing structures in the existing building A. On-site cast concrete works. Calculation, production and delivery of concrete elements with associated bracing systems. Calculation, production and delivery of steel constructions that are necessary for the element delivery. Calculation and delivery of self bearing corrugated steel sheets for use in the roof. Delivery of assembly of steel constructions. Delivery of assembly of carbon fibres for strengthening of concrete beams and floors. Calculations of fixing and supply and assembly of insulation and roofing.