Rev. 11/30/2018
LAD-FM, MANUAL
Copyright 2017 Vestil Manufacturing Co.
Page 11 of 18
Step 3: A) Fasten the stairway mounting frame to the mezzanine using the
1
/
2
” bolts selected by your
building engineer. Install but do not tighten the two bottom bolts. B) Align the bolt slots in the jack support
with the lower bolts (circled); then tighten the bolts. Fasten the mounting plate to the wall with
1
/
4
” bolts of
appropriate length.
Step 2: Use point D as the reference for determining the proper locations of bolt holes. The holes drilled
into the mezzanine/walkway must match the positions of bolt holes in the stairway mounting frame.
Dimensions are shown below.
Make a line that extends 8” on both sides of point D on the wall or mezzanine. The line must be parallel
to the floor. Next, draw a plumb line at both 8” marks (lines are labeled “a” and “b” in the diagram above).
Mark each plumb line 1½” and 6
1
/
2
” below the level line. Bolt holes will be drilled at all four points as
shown above. The pre-drilled holes in the mounting frame are
5
/
8
” (diameter). We recommend using ½”
(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 and of suitable length.
D
8in.
8in.
1
1
/
2
”
5”
a
b
Mezzanine
Stairway
mounting
frame
Mounting plate
1
/
4
” inch
diameter
bolts (4)
Jack
support
Fasten mounting plate
to mezzanine with
1
/
2
”
hardware
Level
line
A
B
Bolt slot
Stairway
mounting
frame
Jack
support
Slide
retaining
tube
Pin slot
