How To Check Grade with a Rotary Laser Level

Here’s how to use a rotary laser level.
Start by securing it to a tripod or a stable surface.
This laser will automatically self-level up to 5 degrees.
Turn it on, while the laser adjusts the light blinks; then it starts.
I set my grade rod on the top of this floor and adjusted the receiver until it aligns with the laser.
There are up and down arrows, and a solid tone lets you know you’re on the mark.
The laser is set at 2’ 10” above the floor.
The bottom of the pit I dug needed to be exactly 3 feet lower than the top of the floor, so to get this depth I raised the receiver 3 feet- to 5’ 10” mark.
By raising the receiver I’m lowering the bottom of the grade rod to the depth it needs to be, because the receiver always stays level with the laser.
Here’s how I use the level to check the height of my gravel.
The concrete slab is 6” thick, so by raising the receiver 6”- it puts the grade rod at the top of the gravel.
Historians say the pyramids were leveled by flooding the foundation- It would have been a lot easier with this laser. ‪@hausplans‬

#build #building #howto #laser #level #grade #rotarylaserlevel #construction #diy #contractor #topconlaser #survey #tripod #tools