Wind on House.
Wind on House.
(OP)
Please see attached sketch
I have a house 30' x 45 '.Wind perpendicular to 45' will eventually engage roof diaphragm and floor diaphragm both from windward and leeward side.
Roof diaphragm will be resisted by two 30' long shear walls and will go to 30' side footing. Floor diaphragm will go to 45' side footing. Am I right?
I have a house 30' x 45 '.Wind perpendicular to 45' will eventually engage roof diaphragm and floor diaphragm both from windward and leeward side.
Roof diaphragm will be resisted by two 30' long shear walls and will go to 30' side footing. Floor diaphragm will go to 45' side footing. Am I right?






RE: Wind on House.
Mike McCann
MMC Engineering
RE: Wind on House.
Wind against 45' side . Top half portion will go to roof dia. Bottom half will go to floor dia.
Floor dia. is one feet above the footing along 45' side. What makes this load to travel and
go into 30' side footing and not to footing just below it. I am just trying to understand please.
RE: Wind on House.
RE: Wind on House.
RE: Wind on House.
Unless you are dealing with a cantilever diaphragm, the wind force will only go to the 30 foot endwalls for application against the 45 foot face. The opposite is true for wind applied perpendicular to the 30 foot walls - the 45 foot walls will resist it.
Mike McCann
MMC Engineering
RE: Wind on House.
UcfSE,
Floor is with 2x10 wood joist. There is basement floor below it but basement walls are of concrete which I am considering as footing for wood wall above it.
RE: Wind on House.
I also assume that you are a fisher of men?
Mike McCann
MMC Engineering
RE: Wind on House.
RE: Wind on House.
RE: Wind on House.
If the flundation the lower floor diaphragm is tying into only seel one to two feet of wind pressure below it, as a short stem wall would, then ingnore the contribution of the lower floor diaphragm to the endwalls. However, if it is a full story that does not have earthfill around it, then, with the floor diaphragm still being flexible, distribute the additional lateral load from the wind eto the endwalls.
Mike McCann
MMC Engineering
RE: Wind on House.
Can you explain
"Unless you are dealing with a cantilever diaphragm"
Thx
RE: Wind on House.
Mike McCann
MMC Engineering