4
STEP-BY-STEP
GUIDE
0800 003 006
/
boundaryline.co.nz
POST
INSTALLATION
Please read the wind region and post hole
depth charts carefully prior to starting
your installation.
We recommend you plan your wall set out/post
position on a piece of paper first to save unnecessary
digging.
Accurately determine the boundary line to where the
wall will be installed, (in some cases a surveyor may
be required) mark this with a string line as per the
diagram below.
STEP 1 –
DETERMINE THE FENCE LINE, POSTHOLE DEPTHS & CENTRES
Determine your posthole centres using the table below as a guide and mark out your posthole positions on the
ground with line marking paint.
NOTE
-
Wall panels may be trimmed with a circular saw if necessary to fit in within an exact measurement (panel cutting
procedure is detailed later in this guide).
Postholes can be dug by hand or with a mechanical auger. Use the Footing depth table on page 5 to determine your
posthole depth and diameter.
Recommended footing depths listed here are for wind regions A & B plus terrain categories 2.0, 2.5 & 3. If you are
building your wall in a Cyclonic wind area, on the top of a hill, adjacent to an escarpment, on a ridge, or in terrain
category 1, you will need engineering advice beyond the scope of this publication.
!
IMPORTANT
BOUNDARY LINE
POST FACE TO POST FACE
POST FACE
STRING LINE
Position off the
boundary line half
the depth of the post
POST FACE TO POST FACE
NOTE:
-
The diagram below is for reference purposes only &
shows the wall splitting the boundary line, this is may
not always be the case depending on your individual
