[Dennis Brown]

I have began sketching out my basement and have began trying to put the lines on the floor. After i marked off how far i would be coming off my walls. I placed my laser level on the mark and have not gotten any straight lines consistent lines. since my basement walls are old stone walls i can't accurately know how much off the wall i am coming off because stone walls are ridged.

I am using
Bosch GLL 100 GX

Here are some pics.

Any Information would be helpful.

Thanks

 

[Nealtw]

I have began sketching out my basement and have began trying to put the lines on the floor. After i marked off how far i would be coming off my walls. I placed my laser level on the mark and have not gotten any straight lines consistent lines. since my basement walls are old stone walls i can't accurately know how much off the wall i am coming off because stone walls are ridged.

I am using
Bosch GLL 100 GX

Here are some pics.

Any Information would be helpful.

Thanks

Can you take a picture of the top of the wall where it joins with the wood structure?

 

[Dennis Brown]

Can you take a picture of the top of the wall where it joins with the wood structure?

Yes once i get home. In the office. Look out for post in the evening.

 

[Nealtw]

Yes once i get home. In the office. Look out for post in the evening.

With a concrete foundation we have to add fire stopping at the top of the wall, so we make the top plate wide enough to reach the sill plate on the top of the foundation and then level down from there.

With a stone wall, you might find anything there but if nothing else you can measure in from the rim joist. Find the worst spot in the wall and use that measurement at each end of the wall, Snap a line on the ceiling joists and then plumb down to the floor and put a line there.

You will still want to figure out how to fire stop the wall.

 

[Dennis Brown]

With a concrete foundation we have to add fire stopping at the top of the wall, so we make the top plate wide enough to reach the sill plate on the top of the foundation and then level down from there.

With a stone wall, you might find anything there but if nothing else you can measure in from the rim joist. Find the worst spot in the wall and use that measurement at each end of the wall, Snap a line on the ceiling joists and then plumb down to the floor and put a line there.

You will still want to figure out how to fire stop the wall.

Thanks. will update you once i get home.

 

[DIYOkie]

Ok, I have nothing to contribute to the thread...but if you click the links to his pics, then select "next post"....that's freakin' funny as hell. I actually did laugh out loud. Brilliant.

 

[Nealtw]

Ok, I have nothing to contribute to the thread...but if you click the links to his pics, then select "next post"....that's freakin' funny as hell. I actually did laugh out loud. Brilliant.

I got a picture of an elevator. :biggrin2:

 

[DIYOkie]

Keep scrolling down...it's hilarious. He basically documents being stuck on an elevator for about an hour, makes good comedy out of it.

 

[3onthetree]

I think you are saying the laser is fine, you are just getting too many variations in the "air space" between your new wall line and the stone? Use the wood framing above to set your perpendiculars and parallels.