A 7 circular saw for instance can only cut to 2 inches deep meaning you ll need to sledgehammer the rest of the concrete away.
Saw to cut concrete slab.
Before you start saw cutting concrete is important to select where these cuts will be done.
In this video we are cutting concrete with a circular saw aka skil saw.
There are three common types of concrete sawing methods.
Whether you re cutting concrete blocks slabs walls or floors using the right equipment and techniques will make the job easier safer and more precise.
Following is a rundown of common concrete cutting tasks from dinky to monster sized and the best tools and techniques for handling them.
Try a concrete saw.
Using this equipment you can place concrete in the morning then cut the slab during regular working hours the same day.
To cut concrete with a 15 amp circular saw start by using chalk to mark cut lines on the surface of the slab.
The blade that i am using is a bosch db741c 7 inch premium segmented diamond blade.
Knee pads and shin protectors will further protect your legs.
Most table saws have more power than a hand held saw so one pass ought to do the trick.
Joints shall be spaced at 24 to 36 times the slab thickness but this need to be confirmed by a structural engineer.
Flat sawing which is also referred to as slab sawing is the process of cutting the upper portion of concrete to create an even plane up to 24 inches in depth on average.
If you have access to a table saw use it to cut the pavers.
Again you will have to change the blade to either a carbide or diamond tipped variety.
When plumbing fails beneath a slab on grade foundation cutting away the existing floor to make repairs is necessary.
It is recommended to start saw cuts on or at the center of column lines.
This method can level out damaged pavement.
Flat sawing wall sawing or hand sawing.
Of course wear protective gear when cutting concrete a heavy long sleeved shirt pants steel toed boots gloves face shield hearing protection and a dust mask.
In these cases consider using a lightweight saw that allows you to cut within a few hours after final concrete finishing.
A 14 wet cutting blade attached to a concrete cutting.
Sometimes concrete cracks before the saw can cut the joint without causing raveling.
Use a table saw.
Where to saw cut concrete.
Slab foundations can be much thicker than patio and sidewalk slabs requiring the use of commercial concrete saws and industrial grade saw blades.
Do not attempt to cut a concrete slab with a blade meant for wood.
Most of the battle can be won by simply selecting the right tools.