Wind uplift tables...for a wall?
Wind uplift tables...for a wall?
(OP)
The company which I work for has a SIPS style panel that uses 20 gauge steel framework that is imbedded in a set of grooves in a styrofoam cored, cement board skinned (on both sides) panel. As we have travelled to different tradeshows, one of the things that we have been asked for is a wind uplift table for our panel. Talking to any amount of engineering firms or testing laboratories, we've yet to truly figure out how to examine this particular aspect of our board, and if there is a certified test for doing it (Potentially the ASTM E2127-01a?) nor have we actually seen a "wind uplift table" that applies to anything but a roofing system. Is this simply a tensile strength rating? Or does such a table exist for wall systems? IT is rather confusing as we know how to calculate wind uplift on a roof..and the force that it applies to each truss, but we are still not getting an answer as to what the wind uplift resistance of a wall, nor what a table that is representative of this resistance even looks like. If someone could provide some information and an example to this type of table, or the testing that is used for finding out such information, I would be immensely grateful. Thank you.
Ryan
Ryan






RE: Wind uplift tables...for a wall?
RE: Wind uplift tables...for a wall?
RE: Wind uplift tables...for a wall?
RE: Wind uplift tables...for a wall?
RE: Wind uplift tables...for a wall?
If you wall panels are non-load bearing and simply work as veneer attached to the main structure, then the word "uplift" may be simply mis-spoken - where they really mean wind suction - outward pressure on the exterior skin due to wind forces. In this case, there could be tables developed that show, for different wind speeds (90 mph, etc) what maximum span the wall panel can achieve under the component wind pressures required by the building codes.
RE: Wind uplift tables...for a wall?
RE: Wind uplift tables...for a wall?
RE: Wind uplift tables...for a wall?
It seems to me the easiest thing would be to ask the people who have this question what exactly they need to know about uplift. I think what they are looking for is a blanket answer to what is probably the job of the design engineer. That is, number and size of connectors. Overturning forces on a building due to wind or seismic forces is unique to each each design depending on wall height, wind exposure, or seismic zone etc.