An curved arrow pointing right. This versatile concrete machine makes curbs, gutters, sidewalks, and barrier walls. Following is a transcript of the video. This machine perfectly pours concrete.

Polished concrete slabs are found today in grocery stores, offices, retail, big box and residential ... Requirements are detailed for testing and inspection, quality control, quality assurance ...

If so, there's likely some space between the slab and the ground. 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.