Specifications

STANDARD SPECIFICATION - BUILDINGS
DPI REFERENCE TEXT - APRIL 2009
PAGE 30
edges and align patterns. Arrange the material so
that variation in appearance is minimised.
Adhesives
Use adhesives as recommended by the manufacturer
for the particular application.
Joints
Heat welding: After xing, groove the seams with a
grooving tool and weld the joints with matching ller
rod and hot air welding gun. When the weld rod has
cooled, trim off ush.
Cold welding: Apply seaming compound 100 mm
wide to the substrate centrally under the seam. Roll
the nish in two directions until the compound is
forced up into the joint. Clean off ush with a damp
cloth.
Junctions
Scribe neatly up to returns, edges, xtures and
ttings. Finish ush with adjoining surfaces.
Vinyl Skirting
Moulded black PVC feather edge skirting section,
100 mm high. Scribe as necessary, mitre corners
and x to walls with contact adhesive.
Cleaning and protection
Keep trafc off oors until bonding has set or for 24
hours after laying, whichever period is the longer.
Do not allow water in contact with the nish for 7
days.
Finishing
Finish in accordance with the manufacturers written
instructions.
16. PLUMBING AND DRAINAGE
16.1 GENERAL
Cross references
Refer to the following sections:
• Sitepreparation, for service trenches.
• Roong, for roof plumbing.
• Tiling, for waterproong of wet areas.
• Painting, for priming steel or iron before installation
and exposed piping required to be painted.
Standards
Plumbing and drainage products: To SAA MP52.
Installation: To AS/NZS 3500.5.
16.2 NOTICE
Commencement – Hold Point
Hold Point: Do not commence work until a Copy
of the approved plumbing plans has been lodged
with the Building Certier. Supply one copy of the
approved Drawings to the Superintendent before
commencing work on site.
16.3 INSPECTION
Notice: Give sufcient notice so that inspection may
be made of work ready for testing. Include inspection
for, plumbing, drainage and gas instructions.
16.4 TESTS
Hydrostatic tests – Hold Point
Hold Point: Waterpipes: Test to AS/NZS 3500.1,
Section 16.
Hold Point: Sanitary Pipes: test to AS/NZS 3500.2,
Section 13.
Preparation for testing
Seal off items of equipment not designed to
withstand the test pressure. Securely anchor pipes
and ttings in position to prevent movement during
the tests.
Cure solvent cement joins for at least 24 hours
before testing.
Testing
Check pipe joints, valve seats, tap washers, strainers
and other elements for leaks. Repair or replace if
damaged, and retest.
16.5 CONTRACTOR’S SUBMISSIONS
Work-as-executed drawings
Submit drawings showing the ‘as installed’ locations
of pipes, ttings, tanks, water heaters, control valves
and accessories. Show the depth of underground
pipework.
Connections
Excavate to locate and expose the connection
points and connect to the authorities’ mains. On
completion, backll and compact the excavation
and reinstate surfaces and elements which have
been disturbed such as roads, pavements, kerbs,
footpaths and nature strips.
Local authorities
If the authority elects to perform or supply part of the
works, make arrangements and pay and bear the
fees payable for the work.
16.6 MATERIALS AND COMPONENTS
Water supply pipes
Copper pipe: To AS 1432, Type B.
Jointing methods: Use capillary ttings, compression
ttings, silver brazed slip joints or screwed joints.
Galvanized steel pipe: To AS 1074, with screwed
joints.
Wall thickness: Heavy for sizes up to and including
DN 80, medium for sizes above DN 80.
Generally: Use copper pipes.
PLUMBING & DRAINAGE
Specifications March 2009.indd 30 11/03/2009 11:47:12 AM