Attachment of sole plate to diaphragm on interior shear wall 1

[shaneelliss]

On an interior shear wall with a shear load of say 400 plf for example, what requirements are there for the attachment of the sole plate to the wood diaphragm? Do I need to calculate the allowable value of shear for each nail and require the appropriate number of nails along the sole plate, or is there a table or standard somewhere?

 

[OldPaperMaker]

Go to Table 11N in the NDS and pick the side member thickness, nail size and wood specie. Multiply this value times 1.6 for the Duration of Load factor. Then divide this value by the shearwall load to get the nail spacing. Put this value in your Shearwall Table as "plate to plate spacing".

If the shearwall is parallel to the floor joist make sure that your details shows a 4x instead of a 2x under the plate so the nails have something to nail into. If the shearwall is perpendicular to the joist make sure that you show blocking under the shearwall to get the load into the diaphragm. If there is a shearwall below make sure that your details show Simpson clips like A35 or LTP5's to transfer the load from wall above to the double top plate of the wall below.

Good luck!

 

[shaneelliss]

Thank you for the great answer.