The plumb bob, laser level, framing square and string are your friends.
Learn the 3. 4. 5. technique of determining a square......Measure down each 90 degree leg of the angle, from the corner...One leg, 3', the other leg, 4', and if the intersecting diagonal is 5' exactly, you have a perfect 90 degree corner...If not, adjust accordingly. Best done with two people. With one, it's tedious but doable.
When it's all done, pull a diagonal from corner to corner, across the building. If they match, you've done good...If not, shorten the long leg and lenghten the short leg until they are even.....Best done with batter boards, without corner posts in the ground.
Probably too late for you, but it's just good info, for anyone with minimal building skills.
Learn the 3. 4. 5. technique of determining a square......Measure down each 90 degree leg of the angle, from the corner...One leg, 3', the other leg, 4', and if the intersecting diagonal is 5' exactly, you have a perfect 90 degree corner...If not, adjust accordingly. Best done with two people. With one, it's tedious but doable.
When it's all done, pull a diagonal from corner to corner, across the building. If they match, you've done good...If not, shorten the long leg and lenghten the short leg until they are even.....Best done with batter boards, without corner posts in the ground.
Probably too late for you, but it's just good info, for anyone with minimal building skills.