Product and Installation Manual: Sentry Barrier TL-4 ThrieBeam System
ACP
| September 2020 |
Page
5
New South Wales
Sydney
02 8708 4400
Victoria
Melbourne
02 8708 4400
Queensland
Brisbane
07 3442 6200
Western Australia
Perth
02 9772 4172
Any posts with damaged connections can be repaired by replacing the connection hardware only,
reducing the need to remove posts and repair damaged ground.
Key specifications for the
Sentry Barrier TL-4 ThrieBeam System
are:
System Width
200 mm
Height to top of rail
1050 mm
Height to top of post
1040 mm
Post Weight
20.5 kg
Post Length
2000 mm
Post spacing
2.00 m
MASH TL4.10 dynamic deflection (1,100 kg Vehicle)
1.06 m
MASH TL4.11 dynamic deflection (2,270 kg Vehicle)
1.45 m
MASH TL4.12 dynamic deflection (10,000 kg Vehicle) 1.53 m
The minimum Length of Need (LON) of the
Sentry Barrier TL-4 ThrieBeam System
is dependent on
the posted speed limit. Please refer to state roading authority approval letters for local minimum
length requirements. However, a 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 86 m, excluding terminal
ends.
The
Sentry Barrier TL-4 ThrieBeam System
systems rails and posts are manufactured from hot-
rolled steel flat products in accordance with AS/NZS 1594 and hot-dip galvanised in accordance with
AS/NZS 4680 with an average minimum coating thickness of 35 microns. All galvanising is
undertaken after fabrication is completed to ensure no surfaces are left untreated.
Limitations and Warnings
The
Sentry Barrier TL-4 ThrieBeam System
forms part of an approved roadside protection system
and it must be installed in conjunction with an approved terminal end system on both the approach
and trailing ends. When installed in accordance with the manu
facturer’s instruction the barrier
system allows an impacting vehicle to be re-directed in a safe and predictable manner under the
MASH impact conditions.
Vehicle impacts that vary from the MASH impact conditions for longitudinal barriers may result in
significantly different outcomes from those obtained in the experimental testing and may not meet
the MASH evaluation criteria.
The selection and placement of the
Sentry Barrier TL-4 ThrieBeam System
must be in accordance
with the Roading Controlling Authorities guidelines and the details shown in the construction
drawings. Installation must be within strict accordance with the installation instructions for the
product. Alternative installation techniques will be required if the soil conditions on site do not meet
the minimum requirements stated in this manual.
