Concentrated Load Distribution in Wood Floor Joists
Concentrated Load Distribution in Wood Floor Joists
(OP)
I have a wood floor joist system with 2x joists and plywood decking. How would the 2000# concentrated business loading in ASCE 7-05 distribute to the floor joists? I have heard several arguments about the load sharing ability that the plywood decking allows especially at 16" and 12" o.c. spacings. My idea would be to distribute the load equally to three joists at 16" o.c. and 2 joist at 24" o.c. Are there any advantages of using the plywood sheathing in "two way" action to computationaly verify this assumption? I appreciate any ideas.






RE: Concentrated Load Distribution in Wood Floor Joists
Mike McCann
McCann Engineering
RE: Concentrated Load Distribution in Wood Floor Joists
DaveAtkins
RE: Concentrated Load Distribution in Wood Floor Joists
RE: Concentrated Load Distribution in Wood Floor Joists
Spread the load as DaveAtkins suggests and use the repetitive member factor. Don't spread it any thinner.
RE: Concentrated Load Distribution in Wood Floor Joists
Also, the repetitive member increase is 1.15 (Cr) for joists spaced less than 24"oc.
RE: Concentrated Load Distribution in Wood Floor Joists