×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

IBC table 2306.3 - shear wall question

IBC table 2306.3 - shear wall question

IBC table 2306.3 - shear wall question

(OP)
In IBC-09 Table 2306.3, allowable shear for wood structural panel shear walls etc:

If I call for plywood nailed appropriately on both sides of the wall, can I double the values in the table for my allowable shear?

RE: IBC table 2306.3 - shear wall question

I think it says that in the footnotes doesn't it? Or check the actual code section that references this table.
Typically you can double capacity in shear by sheathing both sides.

RE: IBC table 2306.3 - shear wall question

(OP)
JAE, I checked both of those first and there is no clear answer. Thanks.

RE: IBC table 2306.3 - shear wall question

Yes, you can. In the 2008 SDPWS this is stated in section 4.3.3.3. As long as the grades, nailing, etc are the same then the capacities can be doubled. If the grades, nailing, etc are different, you can only double the lower value. Make sure you take into account the wind reductions though in the table the same for both sides.

PE, SE
Eastern United States

"If a builder builds a house for someone, and does not construct it properly, and the house which he built falls in and kills its owner, then that builder shall be put to death!"
~Code of Hammurabi

RE: IBC table 2306.3 - shear wall question

also, make sure you can actually get the load into and out of the shearwall...

RE: IBC table 2306.3 - shear wall question

slta: Yres you can, but you have to have the same nailing pattern on both sides of the wall, and may have to stagger the panels if I remember correctly.

Mike McCann
MMC Engineering

RE: IBC table 2306.3 - shear wall question

From my structural notes:

Note A: Where P2, P3, P4, or P5 panels are applied on both sides of wall, use Note B. For P2 and P3 panels on both

sides of wall, panel edges may be offset to occur on different studs in lieu of using ( 2 ) - 2 x studs per Note B.

Note B: The following items are required, at Contractors' option: ( In lieu of 3 x studs )

Stagger panel fasteners between top plates of stud wall and face nail top plates w/ 10d nails at 4" o.c

Provide ( 2 ) - 2 x studs at panel edges w/ panel fasteners staggered and face nail studs w/ 10d nails at 8" o.c

P1 is 3/8" WSP w/ 8d @ 6", P2 is 8d @ 4", etc.
P5 is 1/2" WSP w/ 10d @ 2"

So when you have P2 to P5 both sides, you need 3 x sill plate and 3 x studs unless you provide Note B.
If you have P2 or P3 you can stagger panel edges to avoid using 3 x (or double 2 x)


RE: IBC table 2306.3 - shear wall question

Correction to above - add to Note: B

Provide (2) - 2 x sill plate with 10d nails at 4" oc face nailed

RE: IBC table 2306.3 - shear wall question

(OP)
Excel, thanks for the reminder - that part I have covered. Thanks, folks!

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources