I think he was seeing rebar.
Cutting a trench in concrete.
I was on a hotel project where all the floors were post cable tensioned and a separate xray company wall called out for xrays for before any coring cutting in slab.
Turn on the saw blade and slowly.
Once the concrete is out you can dig in the remaining trench to remove the sand or soil before running the new plumbing.
Place the tip of a walk behind concrete saw blade over the center of one line.
I ve just cut several trenches 2 3 ft wide x 25 ft long in my existing concrete slab to run plumbing.
How to cut drain grooves in concrete step 1.
Continue to cut along the entire length of the chalk line then go back to the starting point and make a second pass.
Once you ve cut along the borders of the trench the next step is to remove the strip of concrete from between the two.
Snap a chalk line over the concrete where you want the center of the drainage groove.
Set the bit down between the two saw cuts and about four.
Considerations cutting through a concrete floor should be a last resort.
Though a good concrete cutter can tell the difference between rebar and cable if he s cutting it.
To cut concrete with a 15 amp circular saw start by using chalk to mark cut lines on the surface of the slab.
I also had to break up footings in a few locations as well.
Tools used in this video.
Connect one end of a.
With the jackhammer cut the drainage channel down to where you dug the trench in your yard so that the water will flow in the correct direction.
How to cut a shallow channel into a concrete floor.
Check to make sure there are no electrical or plumbing lines.
The slab was about 4in thick with wire mesh and a plastic barrier between the concrete and the wet clay like soil home located in new orleans.
This is how to video on cutting a plumbing trench in concrete.
The same guy that operated the scanner cut the trench.
Rosin paper stihl diamond saw exhaust fan if you have any questions.
Measure to the left and to.
Don safety glasses hearing protection and steel toed boots for protection.
