Suspended Timber First Floor Construction

These floor joists are raised above the subfloor on small supporting walls called tassel walls or sleeper walls.

Suspended timber first floor construction.

Solid floors are a lot more substantial and require the ground to be made up in layers of ground sub base sand compacted hard core damp proof membrane insulation and concrete. Block and beam 81 m. There are 2 types of floor construction used in the building industry today. At the turn of the 18th century when construction techniques moved from boarded floors installed directly on the ground to suspended timber floors over a ventilated chamber the innovation solved a significant problem.

Just how well this works depends to a great extent on the floor construction. Previously floor timbers had been prone to damp and rot thanks to their direct contact with the moist ground. The dead load on a floor is determined by the materials used in the floor s construction. Most self builders now fit underfloor heating into their homes.

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. Suspended floors are the norm for first floors and above but are also excellent for creating a level ground floor over uneven ground. Suspended timber 58 m. Concrete floors are high mass and will act like a giant storage heater staying warm for many hours without any heat.

Suspended timber ground floors consist of the finished timber floorboards being attached to floor joists which are suspended above the subfloor of the foundation. If there s wall board covered ceiling suspended from the underside of that floor the dead load increases to about 10 pounds per square foot. Alongside being cheap and easy to construct timber floors benefit from being able to be adapted on site if need. A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot.

These can be classed as either suspended or solid. 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. Suspended timber floors which are typically found in older houses are normally made from timber floorboards which are then attached to joists just above the foundations of a house. This creates a small gap and allows ventilation and air movement to prevent damp forming in the timber joists.

Ventilation is required in the same way as a suspended timber floor. Different types of ground floor suspended flooring.