Product and Installation Manual: Sentry Barrier TL-4 ThrieBeam System
ACP
| September 2020 |
Page
11
New South Wales
Sydney
02 8708 4400
Victoria
Melbourne
02 8708 4400
Queensland
Brisbane
07 3442 6200
Western Australia
Perth
02 9772 4172
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Care must be taken to ensure the correct post spacing is ALWAYS used during the
installation.
➢
Care must be taken to ensure the posts are orientated correctly during installation and to
ensure all ThrieBeam bolts are inserted and tightened accordingly.
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Care must be taken to ensure the line posts are installed at the correct height.
Soil Condition
The
Sentry Barrier TL-4 ThrieBeam System
is a soil-mounted system driven directly into the soil.
To meet the barrier
’s performance, the soil is required to meet
AASHTO Standard Soil
(Grade B)
and requirements set out by AS/NZS 3845 and (if applicable) TNZ Specification M/4 2006.
Additionally, you should refer to the local Roading Controlling Authorities guidelines for minimum soil
requirements for road safety barrier installation.
Soil conditions on site that do not meet these requirements will require alternative installation or
further investigation. Contact your
ACP distributor
for guidance.
It is strongly recommended that soil tests be completed at the location where the
Sentry Barrier TL-
4 ThrieBeam System
is to be installed.
Post Load Testing
To ensure soil conditions on site meet the
required resistance in the ground for the
system to perform adequately. A Sentry
Barrier TL-4 post should be installed at
the required site location and pull tested.
The method involves applying a 5KN
(510kg.f) force at 700mm above ground
level using a soft strop or similar, capable
of sustaining such force. The maximum
permanent post deflection allowable
onsite is 5mm (+5mm) horizontally at the
ground level. Therefore, the tolerance
allowable is 0-10mm.
Note:
All technical information required to
assist in designing a site-specific
foundation is available from ACP
Distributor.
IF SOIL CONDITIONS ON SITE DO NOT MEET OR EXCEED THE REQUIRED
STRENGTH, SITE SPECIFIC CONDITIONS, REFER TO A LOCAL GEOTECHNICAL
ENGINEER FOR FURTHER ADVICE.
