Specifications

STANDARD SPECIFICATION - BUILDINGS
DPI REFERENCE TEXT - APRIL 2009
PAGE 24
Metal backgrounds
Fix metal lath to provide a key for plaster. Press the
plaster through the aperatures of the metal lathe.
Dense concrete backgrounds
Provide a mechanical key by hacking, bush
hammering or abrasive blasting to expose the
aggregate then dash coat.
11.4 PLASTERING
Thickness limits
One coat work: 12 - 15 mm.
Multi-coat work:
• First coat: 9 - 15 mm.
• Setting coat: 2 - 3 mm.
Cement rendering
Proportions by volume (cement:lime:sand) for
concrete and dense concrete block: 4:1:16
White-set plaster
Use 3:1 gypsum plaster : lime putty, applied as a
skim coat direct to the substrate.
Waterproof render
Use cement based render with proprietary
waterproong admixture.
Tolerances
Finish plane surfaces within a tolerance of 6 mm in
3 m, determined using a 3 m straight edge placed
anywhere in any direction. Finish corners, angles,
edges and curved surfaces within equivalent
tolerances.
Curing
Do not allow rapid or uneven drying out.
Keep continuously moist for 2 days and allow to dry
for 5 days before applying further plaster coats.
V-joints
Provide V-joints cut straight through the plaster to
the substrate at the following locations:
• Junctions between different substrate materials.
• Abutments with other nishes.
• Abutments with metal door frames.
Trim
Provide purpose-made zinc-coated steel sections
as corner beads, stop beads, and at movement
control joints.
Finishes
Sand nish generally for cement render.
Steel trowel nish for white set and cement render
to be vinyl sheeted.
Wood oat nish for cement render to be tiled.
Movement joints
Provide movement joints 3 to 6 mm wide in the nish
to coincide with movement joints in the substrate.
Finish with Rondo stopping beads and ll with a
resilient sealant.
JOINERY & FIXTURES
12. JOINERY AND FIXTURES
12.1 GENERAL
Outline description
This section covers:
• Joinery & Associated Hardware
• Fire Extinguishers & Blankets
• Pin Boards & White Boards etc.,
• Clothes Hoists, Letter Boxes etc.
Cross references
• Painting: For paint nishes.
12.2 MATERIALS AND COMPONENTS
Plywood
Interior use generally: To AS/NZS 2270.
Interior use, exposed to moisture: To AS/NZS 2271
Particleboard
Standard: To AS/NZS 1859.1.
Medium density breboard
Use ne grained uniform density resin-bonded
board.
Standard: To AS/NZS 1859.2.
Moisture resisitant medium density breboard:
Designated by the manufacturer as having imporved
moisture resistance and marked as such.
Melamine overlaid medium density breboard:
Medium density breboard overlaid on both sides
with low pressure melamine.
Wet Processed Fibreboard
Standard: To AS/NZS 1859.4.
Moisture content
Make milled products from timbers seasoned
to within 3% of the equilibrium moisture content
appropriate to the timber and its intended conditions
of use; and with no more than 3% difference between
any 2 pieces in any one group.
Finished sizes
Provide milled timbers with actual dimensions which
are at least the required dimensions, except for
dimensions qualied by a term such as “nominal”
or “out of” to which industry standards for nished
sizes apply.
Decorative overlaid wood panels
Standard: To AS/NZS 1859.3.
High pressure decorative laminated sheet
Standard: To AS/NZS 2924.1.
Specifications March 2009.indd 24 11/03/2009 11:47:11 AM