Suspended Timber Floor Cross Section

Different types of ground floor suspended flooring.

Suspended timber floor cross section. Suspended timber ground floors consist of the finished timber floorboards being attached to floor joists which are suspended above the subfloor of the foundation. The top steel reinforcement is important. Can be laid in any. It rests on beams spanning between supporting walls.

Suspended timber floor as a requirement of the building regulations the structure should be protected against the growth of weeds and other plant life. Suspended timber floor showing internal isolated piers. A suspended floor is one that is suspended above the ground. To prevent dampness causing timber deterioration the sub floor area must be ventilated.

Minimum sizes and spacing for timber members for the floor can be found in as 1684. Suspended timber floors need to have spaces underneath ventilated via air bricks through the outer walls and gaps in any internal walls so that the air can move across the building underneath the floors to prevent the build up of moisture in the timber which could lead to fungal attack. Timber joists can be drilled out or chipped away with caution but it is not. Block and beam floors are a very popular type of suspended floor.

Suspended hollow or timber floors also have a tendency to creak as the nails work loose over time. Alternative floor slab detail. With an i shaped cross section comprising top and bottom flanges made of softwood or lvt laminated veneer timber bonded to a tall. Requires machinery to lift heavy beams advantages.

The ground should have a layer of concrete poured across and there should be a ventilated gap of at least 150mm between the underside of the timbers and the concrete to prevent moisture gathering and affecting the condition of the joists. The answer to this problem can also be found in our project about stopping creaking floors and stairs. You have little option but to hang a suspended ceiling below the floor. The main reinforcement should be of the order of diameter at 9 centres and the distribution steel 3 8 diameter at 12 centres.

Quick to construct 2. To a degree this type of floor can give more comfort when your intention is to carpet the floor and when the floor is well insulated this can create a degree of sound proofing when used in upper floors. Suspended timber floors are normally made up of timber joists suspended from bearing walls which are then covered with either floor boards or high quality sheets of tongue and groove. To prevent rising damp affecting the timber the piers must have a damp proof course or ant cap.

Many buildings with suspended timber floor suffer from rot and insect attack in the ground floor timbers due to poor sub floor ventilation. The suspended reinforced concrete slab is tied into the external capping beam at floor level.