Suspended Timber Floor Design

Figure 2 lateral support offset from brace line redrawn from nzs 3604 2011 figure 6 10.

Suspended timber floor design. The answer to this problem can also be found in our project about stopping creaking floors and stairs. Figure 3 packers between doubled joists under loadbearing walls. The construction of suspended concrete floors is similar to that of timber but can span greater distances and offerings better sound insulation properties. Suspended hollow or timber floors also have a tendency to creak as the nails work loose over time.

The insulation should be supported at the design depth to prevent slumping. 5 2 suspended ground floors this chapter gives guidance on meeting the technical requirements for suspended ground floors including those constructed from. In most cases the variations will be determined by the load bearing requirements and the design but must adhere to the requirements outlined in the australian standard as 1684 residential timber framed construction. A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot.

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. 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. In this case the insulation shall be placed in full contact with the underside of the floor deck and fit tightly to the sides of the rafters. The style is open to lots of adjustment and is flexible enough to suit nearly all flooring needs.

This creates a small gap and allows ventilation and air movement to prevent damp forming in the timber joists. 09 timber flooring design guide page 6 1 timber flooring and floor finishes 1 1 movement in timber floors prior to discussing timber flooring products it is important to understand the relationship between timber humidity in the air surrounding it and the dimensional changes that occur as the result of changes in humidity. For suspended timber floors insulation is generally placed between the floor joists. The dead load on a floor is determined by the materials used in the floor s construction.

Every part of the void under a timber suspended ground floor should be thoroughly ventilated through openings on at least two opposite sides.