STEP 3 - PIVOT PRO® (FREE STANDING) MAST INSTALLATION
3.1 INSTALLING ANCHOR BOLTS
3.1.1 Square Base Plates
(4-bolt
pattern):
A) Anchor bolts (by others) for
base plates must:
• be 3/4” in diameter.
• be embedded at least 4” into
floor, not to exceed 3/4 of floor
depth
(see
diagram 3A
).
Note:
A minimum 6” thick
reinforced concrete floor is
required
(
see
diagram 3B
).
• have
minimum
of two threads above nut after
installation
Note:
PIVOT PRO® foundation requirements are based
on soil pressure of 2500# per square foot. Concrete
pressure recommended for jib crane foundation is 3000#
per square inch of compressive force, with no cracks or
seams in a 48” square area around center of mast.
Note:
Chemical (epoxy) anchor bolts are recommended
because of their ability to withstand the vibrating loads
caused by the rapid raising or lowering of the load.
B) Drill holes in concrete floor using pre-drilled
holes in base plate or
diagram 3C
as a
guide (use drill bit size recommended by
anchor bolt manufacturer).
C) Install anchor bolts (Grade 5 or better) and
hardware (by others) according to
manufacturer’s installation directions and
requirements.
STOP!
Do not proceed if your support structure does not meet the loading requirements determined in
Step 1.4
.
Diagram 3A.
Typical square base plate anchor bolt embed
ment.
Diagram 3C.
Square base plate pattern.
8
9/18
Diagram 3B.
Foundation Requirements.
CONCRETE IS
NORMAL WEIGHT,
STONE AGGREGATE
6”
48” SQ.
