…groundfloors (a) Sagging or springiness of the floor underfoot Deformation will most commonly result from one or more of the following reasons: under-design of floor framing members; insufficient structural support;…

2.4.3 Floor structure 2.4.3.1 Reinforced concrete construction Cracks, variable in direction and depth Often cracks will form in reinforced concrete including slab-on-ground construction, suspended slab floors, stair flights, landings and balconies…

…towards the top. The effect on the floor is that the internal supports drop below the bottom of the bearers and the floor becomes springy and sags slightly. General cracking Cracks…