INSTALLATION
MANUAL
MODEL 773 SERIES
REINFORCED CRASH ARM
B&B ARMR: A Division of B&B Roadway and Security Solutions
Page 14 of 38
0773-9001 Rev D
B&B ARMR reserves the right to change any information concerning product or specification without notice or obligation.
3.3.1.
Step 1 – Excavation
The excavation dimensions detailed in
are the minimum
requirements needed to maintain Model 773(Ex, Hx, MD) specified crash rating as
defined by the submittal package.
3.3.1.1.
The drawing titled
Drawing 2 – 773E/H Series Foundation and Clear
(see Section 6 at the end of this manual) details GENERIC
foundation pads, clear opening and other critical dimensions. Refer to the
submittal package drawings for project specific dimensioning.
3.3.1.2.
Measure and mark the area to be excavated with flags or marking paint as
indicated by the project submittal package.
Final pad positioning should be within ½ in. (13 mm) dimensional
tolerance to assure proper alignment of the arm with the stanchions.
3.3.1.3.
Excavate the hole for the Drive and Receiver Stanchion.
3.3.1.4.
Compact the soil on all sides of each hole.
3.3.1.5.
To support the concrete foundations of the 773 Barrier and to
ensure the barrier can properly stop vehicles at the designed rating, make
sure surrounding soil is capable of withstanding the minimum compaction
requirements.
Table 1 - Excavation Summary
3.3.2.
Step 2 – Conduit and Rebar Installation
Perform the following steps, to install the conduit for the power and control circuits,
referring to the Project Submittal or generic drawing titled
Foundation and Clear Opening Details
(see Section 6 at the end of this manual).
IMPERIAL
STANCHION
EXCAVATION
(L x W x H in
inches)
REBAR
Type #4 Deformed, Grade
60
SOIL
Min
Compaction
CONCRETE
4000 PSI minimum
Drive
60 x 60 x 48
Approx. 63 ft.
1,600 PSF
Approx. 3.7 cubic yards
Receiver
60 x 60 x 48
Approx. 63 ft.
1,600 PSF
Approx. 3.7 cubic yards
METRIC
STANCHION
EXCAVATION
(L x W x H in
cm)
REBAR
Type #4 Deformed, Grade
60
SOIL
Min
Compaction
CONCRETE
27.6 MN/m
2
minimum
Drive
152 x 152 x 122
Approx. 19.2 m
76.6 kN/m
2
Approx. 2.8 cubic meters
Receiver
152 x 152 x 122
Approx. 19.2 m
76.6 kN/m
2
Approx. 2.8 cubic meters
