Partially Enclosed Building
Partially Enclosed Building
(OP)
If you have a building with three solid walls and one completely open wall it meets the requirements of a partially enclosed building per ASCE7. However it seems to me that the intent of ASCE7 is for a building with openings not a completely open wall. I think that the value of the internal pressure coefficient should be the stagnation pressure coefficients not 0.55. Any opinions?






RE: Partially Enclosed Building
RE: Partially Enclosed Building
RE: Partially Enclosed Building
RE: Partially Enclosed Building
steelion that condition is for "leaking". To me the 0.55 makes sense for that condition. But in a condition where there is no wall then it seems to me that the stagnation pressure makes sense.
That is my real question-is reasonable/necessary to treat the two conditions differently.
RE: Partially Enclosed Building
This has been confirmed forensically after damaging wind events where garage doors were blow inwards and then windows, doors, or worse case, walls/roofs are then blown outward. Though that document did not spell it out, it should also be clear the left-right wind direction will produce your worse case uplift on the roof due to the large internal pressure and upward pressure on the ceiling (if its there) or on the underside of the roof....
In Florida this has led to better garage doors, better tracks, and even stiffener posts and beams that can be quickly installed prior to a hurricane. Some systems have a pre-drilled hole(s) in the slab where you insert a pin/dowel to stiffen the bottom of the garage door. During the busy season of 2004 in Central FL, I put a couple of garbage cans filled with water in front of my old-school outward swing door, and the same on the inside. Some people parked their cars next to their doors inside and tied them off to the bumper...
RE: Partially Enclosed Building
RE: Partially Enclosed Building
RE: Partially Enclosed Building
The +/- algebra can get confusing so I fudged the CC to cut to the chase...
Windward direction towards door opening, back wall pressure = +.55 internal + CC suction on leeward side of back wall
Leeward direction towards back wall, opposite of door opening = -.55 internal - CC positive pressure on leeward side of back wall
RE: Partially Enclosed Building