Specifications

STANDARD SPECIFICATION - BUILDINGS
DPI REFERENCE TEXT - APRIL 2009
PAGE 22
Visible accessories
Provide materials with the same nish as cladding
sheets.
9.7 LINING
Materials and components
Plasterboard
Standard: To AS/NZS 2588.
Do not use plasterboard in wet areas.
Fibre cement
Standard: To AS/NZS 2908.2, type B, category 2.
Fasteners
Steel nails: Use corrosion resistant nails.
Self Drilling Screws: To AS 3566, corrosion
resistance Class 2.
9.8 PLASTERBOARD
Installation
Plasterboard: To AS/NZS 2589.
Framed construction: Screw or nail or combine with
adhesive.
Masonry construction: Adhesive x direct to
masonry.
Joints
General: Provide recessed edge sheets and nish
ush with perforated reinforcing tape.
External corner joints: Make over zinc-coated steel
corner beads.
Control joints: Install purpose-made zinc-coated
control joint beads in walls and ceilings at 12 m
maximum centres and to coincide with structural
movement joints.
9.9 FIBRE CEMENT SHEET
Installation: Screw x with self embedding head
screws and ush over screw heads.
Joints
Flush jointing: Use 6 mm thick Villaboard with
recessed edges. Provide a ush nish using
perforated reinforcing tape. In tiled areas do not
apply a topping coat after bedding the perforated
paper tape in bedding compound.
Control Joints: Install purpose made zinc coated
control joint beads at max 7.2 m centres.
UPVC Joining Strips: Use 6 mm Versilux with
proprietary UPVC mouldings at joints of sheets and
edges.
V Joints: Use 6 mm Versilux with bevelled edges
tightly butted to form neat V joints.
9.10 TONGUE AND GROOVE LINING
Installation
Stained or clear nished boards: Select boards to
give a random pattern. At corners, return the same
board to give a continuous grain pattern.
Fixing: Nail twice to each crossing except for secret
nailed proles.
SUSPENDED CEILINGS
Nailheads: Treat visible nailheads as follows:
• In stained or clear nishes: Drive ush.
• In opaque nishes: Punch below surface and
ll ush with putty after the surface has been
primed.
Joints
End grain joints: Install boards so that butt joints are
in compression.
Corners: Mitre external corners and scribe internal
corners.
9.11 PLASTIC LAMINATE
3 mm thick plastic laminate sheet for use in
wet areas. Adhesive x the sheets and join with
proprietary UPVC Joiners. Seal all joints.
9.12 TRIM
General
Provide timber or moisture resistant medium density
breboard trim, such as beads, skirtings, architraves,
mouldings and stops, where necessary to make
neat junctions between components, nishes and
adjacent surfaces.
10. SUSPENDED CEILINGS
10.1 GENERAL
Standard to AS/NZS 2785.
Performance Criteria
Technical Data: Provide technical data to subst-
antiate compliance with the loading requirements
including upward wind load.
Fixing:
Approved Fixers: Install the complete system and
accessories using specialist xers approved by the
suspended ceiling manufacturer.
10.2 INSPECTION
Notice - Witness Point
Witness Point: Give sufcient notice so that
inspection may be made of the suspension system
prior to installation of the panels or lining.
10.3 MATERIALS AND COMPONENTS
Zinc coated steel: To AS 1397/Z200.
Aluminium extrusions: To AS/NZS 1866.
Anodising: To AS 1231, not less than class AA10.
Thermoset powder coating: To AS 3715.
Plasterboard panels: To AS/NZS 2588.
Fibrous plaster tiles: To AS 2185 with hard cast
plaster face.
Fasteners: Self-drilling screws: To AS 3566.
Powder activated fasteners: To AS/NZS 1873.4.
Specifications March 2009.indd 22 11/03/2009 11:47:11 AM