February 2021 |
Page
12
Ph 0800 655 200
or visit
www.csp.co.nz
Product & Installation Manual: Sentry Barrier™
KEEPING
NZ SAFE
Soil Condition
The Sentry Barrier™ is a soil-mounted system
driven directly into the soil. Sentry Barrier™
posts should be installed in soil conditions
that meet AASHTO Grade B standard and
requirements set out by AS/NZS 3845:1999 and
TNZ Specification M/4 2006.
Soil conditions that do not meet these
requirements will require alternative installation.
Contact CSP
®
for details.
It is strongly recommended that soil tests be
completed at the location where the Sentry
Barrier is to be installed.
Note:
All technical information required to
assist in designing a site specific foundation is
available from CSP
®
.
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.
Length of Need
The minimum Length of Need (LoN) of the
Sentry Barrier™ is dependent on the specific
hazard being protected and the posted speed
limit. Please refer to Road Controlling Authority
approval letters for local minimum length
requirements.
The minimum length of need for a two-way road
with a posted speed limit of 100 km/hr with a
clear zone of approaching traffic is recommend
as 30 m plus the length of the terminal end
regions on either end of the barrier system.
We recommend Installers contact their local
Roading Control Authority for further information
or guidance.
Note: As per the LoN design section of the
Roading Control Authority’s guidelines, care
must be taken when calculating the actual
length of a barrier required verses the theoretical
length of need.
