How to cut drain grooves in concrete step 1.
Cutting a trench in concrete.
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.
Place the tip of a walk behind concrete saw blade over the center of one line.
Measure to the left and to.
Locate the area of the concrete floor where you would like to cut the channel.
Continue to cut along the entire length of the chalk line then go back to the starting point and make a second pass.
Next set the saw s blade depth to 2 inches and attach a 7 inch diamond blade using vice grips so that the teeth point in the opposite direction of movement.
The same guy that operated the scanner cut the trench.
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.
Tools used in this video.
Snap a chalk line over the concrete where you want the center of the drainage groove.
Check to make sure there are no electrical or plumbing lines.
Connect one end of a.
I also had to break up footings in a few locations as well.
To cut concrete with a 15 amp circular saw start by using chalk to mark cut lines on the surface of the slab.
I think he was seeing rebar.
Though a good concrete cutter can tell the difference between rebar and cable if he s cutting it.
Turn on the saw blade and slowly.
Set the bit down between the two saw cuts and about four.
Once the concrete is out you can dig in the remaining trench to remove the sand or soil before running the new plumbing.
Considerations cutting through a concrete floor should be a last resort.
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.
This is how to video on cutting a plumbing trench in concrete.
Don safety glasses hearing protection and steel toed boots for protection.
Step 5 install the pipes to finish the job mix the cement and spread a layer about 3 inches thick around the mouth and sides of the drainage channel.
Rosin paper stihl diamond saw exhaust fan if you have any questions.
