How to cut concrete?
I need to cut about 6 feet in length and about 3 to 4 inch thick in vertical position into a septic tank... making a door entrance for the root cellar.
Have no power, I'm thinking by hand with chisel, or hire somebody with diamond saw. If I chisel by hand, then I can make a nice U cut, curve on top for better strength of door, not dealing with sharp corner. Then I need to extend door by about 4 feet, side concrete wall with roof, tie into the tank with rebar. I guess heaving square corners would work too if I tie rebars into it? This would make it easier pouring the roof.
About 4 feet of soil will go on top and sides, the door extension will give me a second door.