Suspended Timber Ground Floor Minimum Clearance

5 1 22 installation of insulation.

Suspended timber ground floor minimum clearance.

Where a suspended floor is constructed with particleboard flooring product suppliers specify a minimum clearance between the underside of the particleboard and the ground. Timber joists should normally have a minimum bearing. 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. Minimum ground clearance height mm.

This clearance must be increased to 200 mm where access space for termite inspection is required. 5 2 2 provision of information. 5 1 18 laying the ground bearing floor slab. 20 damp proofing concrete floors.

Hollow floors also known as suspended or timber floors are simply timber joists suspended across and supported by load bearing walls under the floor. However paragraph 6 4 1 1 in nzs 3604 2011 allows a minimum pile height above finished ground level of 150 mm. 5 1 17 ground floor slab and concrete. To do this a minimum ground clearance from underside of bearer to finished ground level of 150 mm should be maintained.

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. Nzs 3604 sets a minimum height above ground for wood based products used for flooring. Have the ground beneath the suspended floor graded in accordance with open link in same page 3 1 2 3. The ends of these timber joists are built into or suspended by joist hangers from the external walls of the property.

It is necessary to allow adequate ventilation and ensure durability of the timber bearer. E2 as1 gives minimum heights of finished floor levels above ground for concrete slab floors and suspended timber floors the measurements depending on whether there is grass or paving outside. 5 2 suspended ground floors.