Page 277 - B6118-AEW-XX-XX-PP-A-0001_(P16)_Contractors Manual

CONSTRUCT

C2.2 Installation of Pedestrian Barriers

Safety barriers shall be set out as indicated In order to assist the setting out of posts and fixing
on the designer’s detail patio layout with all of the datum level, the principal contractor
panels bolted between fixed position posts. All may find that shims between the mass concrete
standard barriers are 1500mm and 600mm long foundation and the underside of the post is the
from centres of post. most simple method of fixing the datum level.
Shims must be galvanised mild steel, footprint at
There is a choice of two posts. One post is a least equal to the size and format as the post
standard low level post, the other is a high post base.
with lamp head. All posts are hollow; this allows
an electrical feed to be pulled through the Once foundations have cured, each post must
centre for the posts with lamp heads. The type then be bolt fixed to the corresponding concrete
of post is distinguished on the designer’s patio pad foundation using 4No bolts to each post,
detail drawings in each location. provided by the manufacturer.

Infill panels are fitted between the posts via Once the posts are in position, the panels are
brackets provided which must be riveted to the fixed in position via 2No bolt connections to each
posts by the principal contractor. All panels must post using the locations and bolts provided.
be set along the same datum line in relation
to ground level. Assessing the levels on site, a Excavations around post foundations should
patio datum line must be established to ensure be backfilled and finishes reinstated to suit the
the greatest number of top rails on the safety specified surface finish.
barriers are 1100mm above local finished patio
level. This will be referred to as the patio setting
out datum level.

Once the position of posts have been set out and
the patio setting out datum level established,
mass concrete foundations of approx 400x
400x400 for low posts and 600x600x600 for high
posts should be poured with a finished pad level
-150mm below the patio finish datum level. For
high level posts with lamp heads a duct route
must be cast into the concrete foundation for
an electrical feed to the lamp head.

C2.2 Installation of Pedestrian Barriers 1.0 08 October 2014