oceanobob
Senior Member
In a 100' by 200' warehouse, have to cut two strips 8' by 80' of the existing 6" slab. Then excavate to 18" thickness and place new concrete for the future equipment.
Made the cuts all the way through the concrete section. Pieces were cut at around four feet in order to handle and this also was a good spacing to work with the existing crack control joints.
Needed to make a hole in the start of the job to find a place to hold the concrete saw slurry. First piece was removed with the reachlift forks and it spalled the edge of the concrete floor.
Switched technique to the screw anchor and clevis figuring this allowed some freedom and it also caused spalling.
Had to make a long hole (one area did the hammer and the other area the saw made more cuts) and then remove the panels with the chain tug to keep spalling to an absolute minimal.
FYI the spalls were around two feet long and four inches wide, maybe 1/4 to 3/8 deep. Ugly and time consuming to patch.
Never had this occur on the usual (admittedly narrower) trench cut for the usual pipes and or conduits?
Must be the larger size of these panels.
We tried all manner of wood wedges to soften the inevitable edge contact. And the lifting in all opinion is travelling flat and true but apparently at the time of raising is dragging that edge.
Made the cuts all the way through the concrete section. Pieces were cut at around four feet in order to handle and this also was a good spacing to work with the existing crack control joints.
Needed to make a hole in the start of the job to find a place to hold the concrete saw slurry. First piece was removed with the reachlift forks and it spalled the edge of the concrete floor.
Switched technique to the screw anchor and clevis figuring this allowed some freedom and it also caused spalling.
Had to make a long hole (one area did the hammer and the other area the saw made more cuts) and then remove the panels with the chain tug to keep spalling to an absolute minimal.
FYI the spalls were around two feet long and four inches wide, maybe 1/4 to 3/8 deep. Ugly and time consuming to patch.
Never had this occur on the usual (admittedly narrower) trench cut for the usual pipes and or conduits?
Must be the larger size of these panels.
We tried all manner of wood wedges to soften the inevitable edge contact. And the lifting in all opinion is travelling flat and true but apparently at the time of raising is dragging that edge.