Vestil LAD-FM - Manual (Page 4)

Rev. 3/11/2013 LAD-FM, Manual
Installation Instructions
This stair system must be fastened securely to a wall or a walkway at a location capable of supporting AT
LEAST the combined weight of the stair system plus the maximum rated load of the stairs. Select the
location where the stairs will fasten to the mezzanine and follow the installation instructions (steps 1 - 6) in
order.
Step 1: Measure from the top of the mounting plate to the bottom of the wheels. Also measure the
length of the top of the mounting plate and determine the location of the midpoint. Use these
measurements to determine the proper location for the mounting plate on the wall or mezzanine.
D
Selected attachment
location (dashed)
Walkway / mezzanine
Step 2: Use point D as the reference for determining the proper locations of bolt holes. Each of the holes
drilled into the mezzanine/walkway must be
5 /
8
in and must match the positions of bolt holes in the center
mounting plate. Dimensions of the center mounting plate are shown below:
Either clamp the mounting plate against the mezzanine or wall and use the mounting plate as a template
for drilling the necessary holes, or use the mounting plate diagram above to prepare the mezzanine.
Make a line that extends 8 inches on both sides of point D on the wall or mezzanine. The line must be
parallel with the floor. Next, draw a plumb line at both 8in. marks (lines are labeled “a” and “b” in the
diagram above). Mark each plumb line 1½ inches and 5 inches below the level line. Bolt holes will be
drilled at all four points as shown above. In the mounting plate, the pre-drilled holes are
5 /
8
in. We
recommend using ½ inch (diameter) fasteners to connect the mounting plate to the wall or mezzanine.
Your building engineer should select hardware appropriate for the wall or mezzanine material.
D
8in
.
8in
.
1½in.
5in.
a b
Guard rail
Distance from top of mounting
plate to bottom of wheels
Floor
Copyright 2013 Vestil Manufacturing Corp. Page 4 of 7