Recent content by jamesb5007

The problem seems to be a little more complicated than I first described: big house, built over Puget Sound, on a steel frame. There are few interior load bearing walls: around the perimeter of an elevator, two stairways, some skylights. The roof in question is flat, about 80 feet by 50...

Thanks for the great fast response. I'm thinking of 3/4" expansion joint around perimeter of ceilings.

I just started work on this ongoing project, and my job is to install simpson dtc strut clips to attach the non-bearing interior walls to the open web roof truss, keeping the two nails on the roof strut part of the clip with 1/16" of wiggle room to allow deflection of up to 3/4" in the roof...