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3.0
INSTALLATION
3.1
PLANNING:
Plan your fall protection system prior to installation of the A-Frame Rail System. Account for all factors that may affect your
safety before, during and after a fall. Consider all requirements defined in Section 2 and Table 1 to determine the correct fasteners and
placement for mounting the A-Frame Rail System on the anchorage structure.
•
Anchorage: Anchorage on which the A-Frame Rail System is mounted must meet the Anchorage Load requirements specified in Table
1.
•
A-Frame Rail System Placement: Installation of the A-Frame Rail System on a vertical surface is allowed. Offset the
A-Frame Rail System from any edge of the surface per the fastener manufacturer recommended setback distance (B). Mount the
A-Frame Rail System upright within 1° (5 cm) from vertical.
3.2
ASSEMBLING THE A-FRAME RAIL SySTEM:
1.
With a forklift (or other suitable equipment), layout both Upright Assemblies onto a suitable support system (e.g. saw horses, jack
stands, etc.) while verifying the Upright Assemblies are far enough apart so the Rail Assembly will fit between them(Figure 7).
2.
Perform this step if your A-frame systems is equipped with a "truss" style rail assembly comprised of multiple rail sections. If your
A-frame has a standard one piece beam please skip to the next step(Figure 8). To assemble the truss, slide the end sections onto the
middle section. Fasten the large connecting plates together with the supplied 3/4" hardware. Once the connecting plates have been
secured, fasten the overlapping trolley rail sections together using the supplied 3/8" hardware.
3.
With a forklift (or other suitable equipment), guide the Rail Assembly in to place between the Upright Assemblies.
Bolt in place with the head of the bolt inserted from inside of the Frame. Ensure the mating surfaces are plumb
(Figure 9). Verify the Trolley Rail will be at the bottom and pointing to the ground when the A-Frame is in the
vertical position.
4.
If included with the system, install the Rail Supporting Gussets from the Rail Assembly to both Upright Assemblies.
Ensure the angle of the Rail to the Upright is 90 degrees. Verify the Gusset Support Brackets mounted to the Rail
Assembly are secured by checking the bolts with a wrench(Figure 10).
5.
After all the Rail Supporting Gussets have been installed, torque the nuts and bolts securing the Rail Supporting Gussets to the
mounting supports to the proper specification(Table 2).
Size
3/8"
1/2"
5/8"
3/4"
1"
6.
Attach lifting straps to both Lifting Anchors on the Rail Assembly. Before the A-Frame is lifted to the vertical
position, it is recommended that you attach all SRD, taglines, and lanyards to the trolley(s).
7.
With a crane (or other suitable equipment) and after all the nuts and bolts have been torqued to the required
specification, lift the entire A-Frame Assembly off the ground and in to the vertical position (Figure 10).
8.
With the A-Frame Assembly supported by the crane (or other suitable equipment), insert both Base Supports into
the Upright Assembly Base Support Tubes (Figure 11).
9.
After the Base Supports are equally positioned on both sides of the Upright Assemblies, bolt the Base Supports in
to position.
10.
Attach the Wheel Assemblies by inserting the Base Supports into the Wheel Assemblies (Figure 12).
11.
Align the Upright Gusset to the fixed bracket on the Upright Assembly. Insert the bolt, secure the nut, and tighten
(Figure 13).
12.
Align the Upright Support Gusset with the bracket on the Wheel Assembly by sliding the Wheel Assembly until the
bolt can be inserted. After the bolt has been inserted, secure the assembly with a nut and tighten. Repeat steps 12
and 13 for each of the remaining 3x Upright Support Gussets. All set screws must be loose to move the Wheel
Assembly. If the A-Frame is not being supported by an overhead crane, it may be necessary to provide support
under the Upright Assembly Base Support Tubes to prevent bowing of the Base Supports before aligning and
attaching the Upright Support Gussets to the Wheel Assembly (Figure 13).
13.
After all the nuts and bolts have been tightened to the proper torque specification, drill and tap the holes for the
Wheel Lock Bolts. Each Wheel Assembly has one pre-drilled hole located on the top-side between the two locking
bolts. Drill and tap to the size of the pre-drilled hole (Figure 14).
14.
Insert the Wheel Lock Bolts and torque to the proper specification.
15.
With the crane or other suitable lifting equipment, lower the A-Frame Assembly onto the ground.
16.
Use a ladder or other suitable device to remove the lifting straps.
17.
Attach all four Supporting Jacks to the end of the Wheel Assembly (Figure 15).
Table 2
Recommended Torque Values
lb-ft
N-m
45
61
60
81
75
101
130
176
210
284
17
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