MONTREAL — A huge concrete slab has collapsed in Montreal’s Ville-Marie tunnel, forcing the closure of a major city highway in both directions. No injuries were reported in the collapse, which ...

The waffle slab There are a number of ways that footings may be built, and one such way is the waffle slab. This is a concrete slab that effectively floats on top of the compacted ground.

Mercier Bridge re-opens after fallen concrete slab forces closure of southbound lane By The Staff Global News Posted October 13, 2018 11:57 am Updated October 13, 2018 6:33 pm ...