Hello I have a slab floor with a crawl and I wonder if I dig a hole about 5m by 5m to a small lounge has a depth of approximately 1metre think I supported my pad but I'm afraid the slab cracks or do not take with the vibration of the jackhammer!? thank you for your reply
Hello, I guess your slab was cast over the entire surface of the house construction. It therefore forms a whole, with walls and beams. If you make a cut of 5x5m, you will weaken it and all, will have more cohesion. The support is the very least, before recovering efforts to compression, with new walls. This will require you to make foundations for the walls in the crawl space, which incidentally will no longer play its role. The idea is laudable, but the achievement is not without cause major problems. But if you persist, then "hammer bite", make a cut diamond, perimeter and this, the entire thickness of the slab. (For my part, I do not make this kind of change.)
Yes, it is possible, but extra precautions are necessary. All first made specific plans, you will all be expected.
Then shim your concrete so as to define concrete square transportable. Over to tag your blue square. Acid To the core drill, punch a hole at each corner of each square, and each center. Adjust your timing.
Then, the floor saw, cut each square.
Dig deep in order to make a crawl space underneath your home, or you can opt for a metal floor on which you'll sink your slab or concrete floor, you see.