On 2004-11-03, donald girod wrote:

The total run of the stairs cannot exceed 115" because of headroom
issues--the state code requires minimum headroom of 6'8"=80 inches, and
there is a steel beam flange at 115" which is 85" above the floor.

My understanding of the headroom requirement is that it is from the
diagonal connecting the edges of the nosings, and hence part of the
landing at the bottom of the steps has a greater headroom requirement
than 80".

The building code requires at least a 10" tread

Which building code is this? CodeCheck West 2002 indicates that the
2000 IRC allows maximum 7.75" risers and minimum 10" treads, and the
1997 UBC allows maximum 8" risers and minimum 9" treads.

Cheers, Wayne