MSA Stanchion Mode D'emploi page 15

Concrete Installation: Stanchion Base Installed along Length of HLL with Rebar/Shear Studs
The MSA standard concrete stanchion can be attached along the length of the HLL on concrete with a
minimum width of 12 in. (30.5 cm). To attach the concrete stanchion to rebar or shear studs, the diameter
of the rebar or shear studs must be 1/2 to 1 in. (1.3 to 2.5 cm). Spacing between the centers of the rebar or
shear studs along the length of the HLL must be 4 to 12 in. (10.2 to 30.5 cm). Rebar must extend a minimum
of 4 in. (10.2 cm) above the mounting surface. Shear studs must extend a minimum of 5 in. (12.7 cm) above
the mounting surface to the bottom of the stud head. The rebar or shear studs must be a minimum of 5 in.
(12.7 cm) from the edge of the beam. See Figure 8.
Clamp Saddle
Tieback Base
36 inch
minimum spacing
Figure 8
The stanchion base must be attached with two clamps to two rebar/shear studs. Two bolts are required for
each clamp saddle.
(1) Use a 3/4 in. wrench to remove the bolts from the clamp saddles.
(2) Put the stanchion base as close as possible to the center of the concrete or steel beam.
(3) Put the clamp saddles around the rebar/shear studs.
(4) Put washer on each 1/2 in. diameter bolt, then insert through a slotted hole in the stanchion base then
thread into a clamp saddle.
(5) Move the clamp saddles in the slotted holes to make sure that the rebar/shear studs are in the center
indentation of the clamp saddles.
(6) Tighten the bolts equally so the clamp saddles are evenly aligned with the stanchion base.
(7) Torque the bolts to 60 ft-lbf (80 Nm).
(8) Make sure that the stanchion base is flush with the top of the beam.
Chain Connector
Tieback Chain
Rebar/Shear
Studs
MSA Stanchion
Stanchion
Installation
US
15