Interstory Drift Checks
Interstory Drift Checks
(OP)
I am curious how other firms check interstory WIND drift and would like to conduct an informal survey. We use a 10yr event with P Delta effects, but there are variations between engineers within our office.
1. Do you check interstory drift at the building extremities, at the frame, or at the center of gravity?
2. Do you check interstory drift for all ASCE wind load directions (X Dir, Y Dir, X Dir with Eccentricity, Quartering Winds, etc.)
3. Do you check the resultant of the X and Y displacements?
1. Do you check interstory drift at the building extremities, at the frame, or at the center of gravity?
2. Do you check interstory drift for all ASCE wind load directions (X Dir, Y Dir, X Dir with Eccentricity, Quartering Winds, etc.)
3. Do you check the resultant of the X and Y displacements?






RE: Interstory Drift Checks
I did a single level structure recently braced by cmu walls. Because the stiffness was not symmetric I was getting a greater drift at one end of the floor slab, so that resultant deflection of X and Y is what I used to check drift.
RE: Interstory Drift Checks
RE: Interstory Drift Checks