I have a condition were an exterior girder abuts a stairwell. As a result I have an lu of 15ft. I would like to use a HSS section to minimize the width and keep the section in the plane of the wall studs. However, the Architect does not know of any approved UL ratings for this assembly. This...
Does anyone have some background on the 1.3 reinforcement location factor for horizontal reinforcement placed with more thna 12" of fresh concrete below the development length or splice? The code only comments that the factor was changed to 1.3 from 1.4 in 1989 but gives no reasoning for the...
