General requirements

075324 Galvanized sheet ceiling Soffits

Galvanized steel Soffits shall be flat, ribbed or corrugated steel sheets in the specified thickness.

Comply with Specification 075313 for suspended Soffits.
Comply with Specification 075323 for battens and corner lists and method of construction of soffit.
07533 Milled Timber Floor
075331 Floor Boards

Milled timber complying with the requirements of Specification 07431 and not less than 20mm thickness shall be used for flooring.

The minimum width of the boards shall be 70mm. Floor boards shall be smoothly machined on the exposed face.
Boards shall be tongued and grooved joints finished and accurately matched.
Boards shall be accurately nailed on to sawn timber joists. Joint sizes and layout shall be as shown in detail drawings. If no details are shown, the minimum sizes of joists shall be 60x100mm. Joists shall not be spaced more than 500mm apart at right angles to the direction of the boards.
Joists shall be accurately laid and embedded in concrete. The clearance between the top of the concrete and joist shall not exceed 20mm. In the instance of concrete embedding not being provided, joists shall be sufficiently braced to ensure that, there is no movement while the boarding is nailed.
Nails to boards shall be applied to tongues and well stopped. Floors shall be machined and finished smooth to be prepared for polishing and application of lacquer.
075332 Skirting

Skirting shall be produced from specified milled timber complying with the requirements of Specification 07431. Skirting shall be machined smooth finished prior to installation. Skirting shall have a minimum thickness of 20mm and width shown in drawings. If not stated the minimum width of skirting shall be 80mm.

Full length timber shall be used for skirting to the extent possible. The edge of skirting shall be chamfered to finish level with floor and wall.
Skirting shall be securely screwed or nailed to grounds in walls. Nails shall be punched and stopped.
Splices at joint shall be accurately joined to ensure that joints are not visible after finishing is applied.