Installing The Stanchion On A Steel I-Beam - MSA Stanchion Mode D'emploi

Installation
3.2

Installing the Stanchion on a Steel I-Beam

Steel I-Beam Installation: Clamping Base, Flange Sizes
The MSA standard I-beam stanchion can be attached to steel I-beams with flanges from 6 to 18 in.
(15 to 46 cm) wide and ≤ 2 ¼ in. (≤ 6 cm) thick.
The MSA large I-beam stanchion can be attached to steel I-beams with flanges from 12 to 36 in.
(30 to 91 cm) wide and ≥ 2 ¼ and ≤ 3 ⅜ in. (≤ 9 cm) thick.
The stanchion attachment point may be subjected to horizontal and vertical forces (AL), and torsional
loads (ML). The beam to which stanchions are attached must be sufficient to support the following loads for
each stanchion. Cumulative loading must be evaluated when more than one system is installed on a beam.
Anchor Load (AL)
± 6,000 lb
X
(± 26.7 kN)
-3,600 lb
Y
(-16.0 kN)
Z
US
Figure 4
Stanchions can be attached while the beam is on the ground or when the beam is already installed.
(1) Position the clamp nut at the end of the threaded rod so the clamp can be opened fully.
(2) Put the stanchion assembly in position so the top I-beam flange goes into the slot in the stanchion
base.
(3) Tighten the threaded rod with hook so the hook closes around the flange on the opposite side of the
I-beam.
(4) Hand-tighten the threaded clamp nut (Figure 5) on the stanchion base so the stanchion assembly is
tight on the I-beam flanges.
(5) Make sure that the I-beam flange touches the top and bottom of the slot in the stanchion base.
12
Anchor Moment (AM)
Standard
± 4,680 lb-ft
(± 6.3 kN-m)
± 7,800 lb-ft
(± 10.6 kN-m)
± 18,000 lb-ft
N/A
(± 24.4 kN-m)
Large
± 7,620 lb-ft
(± 10.3 kN-m)
± 12,700 lb-ft
(± 17.2 kN-m)
± 18,000 lb-ft
(± 24.4 kN-m)
MSA Stanchion