Bolting a steel beam to another steel beam.

[vincentianpinner]

The first beam has been in a while it's got a plate welded with the holes for the bolts. Then needs another one attached to form a T shape. The first one is nice and plumb and I assume the second one will be square and true but it occurred to me that once it's screwed tight it might be off slightly and not giving a perfect 90 degrees.
My question is, is there any way of adjusting it slightly if that's the case? Possible where the washers go?

 

[stevie888]

Always best to fit all steels at the same time if you can to avoid this worry.

You may need to add some shims between the plates if you have a misalignment. Unless you have a really bad fabricator and or installer of first beam you'll only need very thin sheet: maybe cut up a baked bean tin.

 

[noseall]

The first beam has been in a while it's got a plate welded with the holes for the bolts. Then needs another one attached to form a T shape. The first one is nice and plumb and I assume the second one will be square and true but it occurred to me that once it's screwed tight it might be off slightly and not giving a perfect 90 degrees.
My question is, is there any way of adjusting it slightly if that's the case? Possible where the washers go?

Is the new beam dictating where the wall goes or is it being aligned under an existing wall?

 

[vincentianpinner]

Is the new beam dictating where the wall goes or is it being aligned under an existing wall?

Under existing unfortunately.

 

[vincentianpinner]

Always best to fit all steels at the same time if you can to avoid this worry.

You may need to add some shims between the plates if you have a misalignment. Unless you have a really bad fabricator and or installer of first beam you'll only need very thin sheet: maybe cut up a baked bean tin.

Something that can crush you mean?