3
0800 003 006
/
boundaryline.co.nz
A STEP-BY-STEP GUIDE
TO INSTALLATION
STEP 1 –
MARKING OUT POST HOLES
Post lengths required will increase accordingly to cater for these ground conditions.
Soil Type
Minimum Hole Depth
Approximate Concrete Required
Clay/Firm Earth
600mm
2 bag per hole (20Kg bags)
Sand/Loose Fill
900mm
3 bag per hole (20Kg bags)
!
IMPORTANT
Start post may
be existing
or temporary
peg
Dig holes
according to
depth chart
below
All holes should be
straight (i.e. Sides
parallel or wider at
the bottom than the
top
Diameter of all holes
is
250mm
minimum.
Marker pegs
Mar
k out
post
cen
tres
STEP 2 –
INSTALLING POSTS
a. Fastening posts together
b. Fixing post in ground
If it isn’t possible to fix posts as
proposed here, please contact
us for further information.
!
IMPORTANT
Approx.
40mm
2 Fasteners approx.
60mm from top of
post
Maximum screw spacing
300mm centres
10 - 16 x 16mm
self-drilling screw
placings.
Screws to conform to
AS3566 Class 3.
-
Place first post in hole
-
Adjust to correct height
-
Support post with temporary brace
-
Fill hole with fully mixed, wet concrete
-
Vibrate and compact the concrete to remove voids.
Align vertically with
spirit level in both
directions
Do not allow soil,
garden fill and/or dirt
to come in contact with
posts as this may cause
the post to corrode
Slop top of
concrete away
from post (to drain
away water)
Bottom
rail approx.
50mm
above
ground
Nominal
30mm
1800mm = 1830mm
