In some cases, attachments that can lift and remove complete sections ... This job required the removal of approximately 80 to 100 slabs of concrete sidewalk. Workers started by breaking up ...

If the chunk won’t budge, move the mattock to the opposite side of the chunk above the flat edge under the concrete. Then ...

It spreads underneath the slab, filling in pockets of air and lifting the surface. Story and editing by Carl Mueller. More from Tech PolyLEVEL, by Foundation Supportworks, is a high-density ...