Concentrated Load on Wood Sheathing - plywood/osb

[RFreund]

I believe this has been asked before however there does not seem to be a definitive answer (or I didn't see it).

Does anyone have any examples/recomendations/referances for analysing a point load on plywood/osb floor.

I have found in the plywood specification that the punching shear may be the area of the point load x the perimeter. However how can bending and or deflection be addressed? Is there a reasonable tributary width to assume?

Thanks in advance.


EIT

http://www.HowToEngineer.com

 

[boo1]

try:

http://www.eng-tips.com/viewthread.cfm?qid=229324

or

http://www.apawood.org/

APA's "Plywood Design Specification"
The last paragraph of Section 3.8.1 (Shear thru thickness) states:
"Shear-thru-the-thickness values as given in Table 3 shall also be used for 'punching shear' calculations. However, no increases in allowable stress shall be taken for face grain orientation, glued frame reinforcement, or restricted core gaps."

PS 1-83:
"Section 4.5.5 states that the general provisions of ASTM E661 are to be followed."

 

[RFreund]

boo - thanks for the response. However that thread and document are what I was referring to in OP. I just wanted to see if there was any other 'recommendations/design guides' out there.

EIT

http://www.HowToEngineer.com

 

[focuseng]

See the following APA publications
E440 (garage floor loading addresses rolling concentrated wheel loads)
N375 (design capacities -read the whole thing)
TT-071 (more garage quick tech guide)
X227 (caster loading on plywood)

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MAP