Direct Lift HR8000 - Manual (Page 7)

TWO COLUMN 8K FLOOR PLATE LIFT CO7589 IN50014 Rev. D 03/2/2010 7
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 1/4”. NOTE: When using the
standard supplied 3/4” x 5 1/2 long anchors; if the top of the anchor exceeds 2 1/4” 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 61/2” in any direction. Hole depth should be a minimum of 4”.
CAUTION!!
3. DO NOT install on asphalt or other similar unstable surface. Columns are supported only
by anchoring to floor.
4.
Using the horseshoe shims provided, 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 1/2” long anchors provided with the lift. Adjust
the column extensions plumb.
5. 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).