This need provides great opportunities to capitalize on your construction knowledge and to start a concrete-cutting and drilling service. The American Concrete Sawing and Drilling Association ...
3. Drill a hole - Drill a small hole through the concrete and poke through it with a stick. If you hit ground, you're in good shape. If not, you might have an issue. 4. Tap it - Not comfortable ...
The new bridge will be earthquake-ready, so crews are digging a 10-foot-wide, 125-foot-deep hole to see how concrete supports react during a simulated seismic event.