Step 5 create a groove in the new mortar with a round nosed trowel.
Cutting a trench in concrete slab.
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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.
Locate the area of the concrete floor where you would like to cut the channel.
Don safety glasses hearing protection and steel toed boots for protection.
How to cut a partial trench in a concrete slab using model in place void extrusion.
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.
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Extend the groove the length of the fresh mortar.
Mix new mortar in a wheelbarrow and pour concrete into the trench you cut.
Make sure the groove is at least 1 inches deep and at least 3 inches wide.
Check to make sure there are no electrical or plumbing lines.
How to cut a shallow channel into a concrete floor.
Allow at least 48 hours drying time.