Suspended Timber Ground Floor Minimum Clearance

Have the ground beneath the suspended floor graded in accordance with open link in same page 3 1 2 3.

Suspended timber ground floor minimum clearance.

5 1 22 installation of insulation. 5 1 17 ground floor slab and concrete. This clearance must be increased to 200 mm where access space for termite inspection is required. Ground moisture rising into or entering the subfloor space can create a damp environment which encourages timber rot fungus growth and the potential for termite activity.

However paragraph 6 4 1 1 in nzs 3604 2011 allows a minimum pile height above finished ground level of 150 mm. The ends of these timber joists are built into or suspended by joist hangers from the external walls of the property. 5 1 18 laying the ground bearing floor slab. Timber joists should normally have a minimum bearing.

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. Where a suspended floor is constructed with particleboard flooring product suppliers specify a minimum clearance between the underside of the particleboard and the ground. 5 2 suspended ground floors.

20 damp proofing concrete floors. So in what situations may minimum pile heights apply. It is necessary to allow adequate ventilation and ensure durability of the timber bearer. When the flooring of a suspended timber framed floor is particleboard nzs 3604 2011 timber framed buildings specifies a minimum clearance of 550 mm between the underside of the particleboard and the ground paragraph 2 3 7.

To do this a minimum ground clearance from underside of bearer to finished ground level of 150 mm should be maintained. Generally this is given as 550 mm minimum but it may be specified as a minimum dimension of 450 mm between the ground and the bottom of the joist which will give at least. 5 2 2 provision of information.