Direct Lift PP8S - Manual (Page 9)

9
FOUNDATION REQUIREMENTS
Concrete shall have compression strength of at least 3,000 PSI and a minimum thickness of 4”.
CAUTION! DO NOT use on asphalt or similar unstable surfaces.
SPECIAL NOTE
This Lift does not require bolting to the floor
(BUT)
If you choose the option to anchor the Lift to the floor please follow
the detailed instructions and criteria below.
FOUNDATION and ANCHORING REQUIREMENTS
1. Concrete shall have compression strength of at least 3,000 PSI and a minimum thickness of 4” in order
to achieve a minimum anchor embedment of 3 ¼”. NOTE: When using (¾” x 5 ½”) long anchors; if the
top of the anchor exceeds 2 ¼” above the floor grade, you DO NOT have enough embedment.
2. Maintain a 6” minimum distance from any slab edge or seam. Hole to hole spacing should be a
minimum 6 ½” in any direction. Hole depth should be a minimum of 4”.
3. Shim each column base as required until each column is plumb. If one column has to be elevated to
match the plane of the other column, full size base shim plates should be used. Torque anchors to 85
ft-lbs. Shim thickness MUST NOT exceed ½” when using the 5 ½” long anchors with the lift. Adjust the
column extensions plumb.
4. If anchors do not tighten to 85 ft-lbs. installation torque, replace the concrete under each column base
with a 4’ x 4’ x 6” thick 3,000 PSI minimum concrete pad keyed under and flush with the top of existing
floor. Allow concrete to cure before installing lifts and anchors (typically 2 to 3 weeks).