Timber Ground Floor Construction Details

Floor joists spaced on regular intervals span the areas between supports such as walls foundations girders and beams.

Timber ground floor construction details.

But there s a risk with solid slabs. Insulation above slab. Ground floors built of solid concrete remain popular with small builders and can often be an economic solution for home extensions. These floor joists are raised above the subfloor on small supporting walls called tassel walls or sleeper walls.

3 10 ground bearing floor slab. They can normally span greater distances than timber joists. Government accredited details developed by bre for local government. Ce 200 details of construction.

Normal spacing is 16 inches on center from center to center though some floors may have joists on 12 inch or 24 inch centers. Ground floor hollow or timber floor hollow floors also known as suspended or timber floors are simply timber joists suspended across and supported by load bearing walls under the floor. The ends of these timber joists are built into or suspended by joist hangers from the external walls of the property. This construction is similar to the timber floor above but uses either pre cast concrete planks or small pre cast concrete beams with concrete blocks laid between the beams.

The following table gives details of allowable spans and spacing between joists for the most common timber sizes used in floor construction. Construction details construction details. 3 16 ground floor timber separating wall. E18 p1 party wall between.

Suspended timber ground floors consist of the finished timber floorboards being attached to floor joists which are suspended above the subfloor of the foundation. E13 gable insulation at rafter level e3 sill. Construction studies drawing detail of suspended timber floor. Ventilation is required in the same way as a suspended timber floor.