Shear wall and truss assembly

[sm69]

I am building a 14' x 12' shed in the Detroit area of Michigan and have recently purchased the nails to fasten the 5/8" thick t-111 sheathing to the stud walls. The nails I purchased are zinc coated 6d cooler nails with a ring diameter of .113" which are set up for a pneumatic nailer. There are 5000 per box, more than enough for the job I am doing. Below are the following questions that I have:

FOR THE 5/8" THICK T-111 SHEATHING:
1) Will the 1 1/4" penetration be good enough to be considered a shear wall?

2) Should the nail spacing around the edges of the T-111 sheating be 6" OC with intermediate center nailing of 12" OC?


TRUSS PLYWOOD GUSSETS TO CHORD/WEB CONNECTIONS:
1) In my yield/limit calculations, I used a diameter of .113. Since the ring of the nail is .113 and not the root, should I get 6d smooth shank or will the coolers (mild steel) work for my application?

1/2" PLYWOOD ROOF SHEATHING
1)Will the 6d cooler nail be acceptable?

2)What spacing should I use (12" O.C.)?

Any suggestions would be greatly appreciated

 

[SperlingPE]

Not enough information.

 

[sm69]

SperlingPE,

Disregarding the previous questions, what I am really looking for: are the 6d cooler ring nails equivalent in bending strength as the 6d common smooth shank? Is there any info that you may have that deals with nail types and strengths?

 

[SperlingPE]

Need some loading information.
Residential or commercial code.
Commercial code (IBC, UBC) has a table with required sheathing and nailing depending on what the load is.
As far as what nails to use, what you have can probably work but it depends on the loads.
If governed by residential code, there should be something in there that tells you how to nail the sheathing, what spacing to use, and what kind of nails.

 

[sm69]

SperlinPE,

Thanks for the reply about the sheathing. My real concern is with the trusses.

For the nails in my analysis, I assumed a 6d common nail (.113 dia, 2" long with a bending stress of 100,000 psi) with the appropriate truss side member and main member thicknesses and their respective dowel bearing strengths. With assumed adjustmnet factors, I calculate Z' to be 47 to 50 lb/nail for lateral loading. Since the yield limit equations used for this result are based on a nail diameter of .113" and a bending stress of 100,000 psi, my concern is: are the 6d coolers equivalent (diameter and bending strenght)?

I have based the required number of nails per truss joint on the 6d common nail. The loads at the joints were calculated based on anticipated worst case snow and wind for the area. I could provide specifics, however it would be too lengthy and not necessary since the yield limit equations for nails are independent of my load cases.

 

[Taro]

No, cooler nails are not equivalent. NDS requires the strength calculations to be based on the root diameter of threaded or annular dowel fasteners. So the capacities will be substantially reduced.

 

[sm69]

Thanks Taro. I will purchase the 6d common nails for my trusses

 

[Taro]

8d box, sinker, or cooler nails would also work as a substitute for 6d common.

 

[sm69]

Thanks