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Alternate Brace wall
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"Strong-Brace Wall" made by Simpson comes pre-attached with PDH holdowns.
For other products that do not come with holdowns, whether a holdown is needed or not should be determined by calculations. Due to the small resisting arm, more often than not, holdowns are required by design.
For other products that do not come with holdowns, whether a holdown is needed or not should be determined by calculations. Due to the small resisting arm, more often than not, holdowns are required by design.
RockEngineer
Structural
See APA Engineered Wood Association pamphlet "Narrow Walls That Work". It is newly revised and gives details on narrow shear walls and tie downs. It can be downloaded for free at
There are also some other technical publications on this page about narrow shear walls.
![[reading]](/data/assets/smilies/reading.gif "[reading] [reading]")
There are also some other technical publications on this page about narrow shear walls.
Yes, holdowns are req'd for 1800lbs. of uplift if designing per UBC 2320.11.4. There are many restrictions for designing with this section of the code and many jurisdictions simply do not accept designs per this section of the code if in Southern California.
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