Specifications

STANDARD SPECIFICATION - BUILDINGS
DPI REFERENCE TEXT - APRIL 2009
PAGE 36
19.4 GATES
General
Construction: Construct gates to match the fencing
and in the lcoations shown on drawings or as
directed.
Hardware: Provide the following:
• Drop bolt and ferrule to each leaf of double
gates.
• Latch to one leaf of double gates.
• Provision for locking by padlock.
• Hinges to ensure smooth operation.
Hand access: Provide hand holes to give access
from outside to reach locking provision.
19.5 FENCE TYPES
Domestic fences
Street Frontage: 760 mm high galvanized posts
and rails with chainwire in accordance with standard
drawing CS 1304-2.
Other Boundaries: 760 mm high galvanized posts
and pigwire in accordance with standard drawing
CS 1304-2.
Security fences
1830 mm high chainwire supported on 4 mm
galvanized wire cables and posts, complete with
offset 3 strand barbed wire at the top constructed
and installed in accordance with standard drawing
CS 1303-1.
Remote Community Fences
1500 mm high chainwire with knuckled selvedges
supported on 3 strands of 2 x 4 mm galvanized
twisted wire and galvanized steel posts set in
concrete footings in accordance with standard
drawing B93-1168-D.
Swimming pool fences
Standard panels of of 16 dia tube roll top fencing
2400 long x 1250 high welded to 32 x 32 x 1.6 rails
and xed with proprietary ttings to 65 x 65 x 2.5
mm SHS posts, including caps. Gate posts 76 x 76
x 3.2 mm SHS.
Concrete Footings: 250 dia x 600 deep for posts
and 300 dia x 700 deep for gateposts.
Finish: Hot dipped galvanized and powder coated.
Fit proprietary hinges and safety latches etc.
Proprietary Item: Magnalatch.
Horizontal sheet metal fences
Hot dipped galvanized 65 x 65 x 3 SHS posts with
caps at 2400 centres set in 225 dia x 900 deep
concrete footings with 0.42 mm BMT Colorbond
Trimdek in long lengths, valley xed horizontally to
nish 1600 above ground level in accordance with
standard drawing B93-1168-D.
Vertical sheet metal fences
Hot dipped galvanized 76 x 76 x 3.2 SHS posts,
1500 high with caps, at 2400 crs set in 250 dia x
600 mm deep concrete footings with 64 x 38 x 3.2
mm RHS horizontal rails clad with 0.42 mm BMT
Colorbond Trimdek valley xed vertically to nish
1650 above ground level.
Refer to the Northern Territory Deemed to Comply
detail S8.
FENCES
Wire
Chainwire, cablewire, tiewire or barbed wire: To AS
2423.
Concrete
Standard: To AS 1379 Grade N25.
Metal Components
Self-drilling screws: To AS 3566 corrosion resistant
class 3.
Steel framing: Zinc-coated or aluminium/zinc alloy
coated steel to AS 1397/Z450 or AZ150.
Steel sheeting: Prepainted to AS/NZS 2728.
19.3 CONSTRUCTION GENERALLY
Clearing
Clear vegetation except for trees and shrubs to be
retained within 1 m of the fence alignment. Grub out
the stumps and roots of removed trees or shrubs
and trim the grass to ground level, but do not remove
the topsoil.
Setout
Setout the fence lines and mark the positions of
gates, posts and bracing panels.
Excavation
Excavate footings so that they have vertical sides
and a rm base.
Minimum footing size
Refer to the standard drawing for the required
fence.
Line and level
Erect posts vertically to follow the contours of the
natural ground.
Concrete footings
Place mass concrete around posts and nish with
a weathered top falling 25 mm from the post to
ground level.
Steel panel fencing
Ensure bottom rails have drain holes and are at
least 50 mm clear of the ground or mowing strip.
Mowing strips
Where required provide a 200 x 75 mm deep
concrete mowing strip under the centreline of the
fence to nish 20 mm above nished ground level.
Specifications March 2009.indd 36 11/03/2009 11:47:12 AM