Lateral Forces Parallel to a Wall

 

Moment → Chord Forces

compression

stability

load on foundation, footing, soil

 

tension 

tension force ↑ as h/b ↑ and dead load ↓

tie-downs or hold-downs

 

tension failure modes

1. cross-grain bending of mudsill  (plate washers)


source 

source 

source

2. splitting of studs  (screws instead of bolts, continuous tie down)


source 

source

source

source

source

source

source
Simpson holdowns

 

3. progressive nail pull through or breaking  (shrinkage compensators)


source 


source 
nails

straps

AutoTight

 

 

 

Shear

anchor bolts


source

 

considerations

  1. stress on bolt
  2. stress on wood  (bearing, splitting)
  3. stress on concrete  (ACI 318 appendix chapter D)
  4. termites and decay

 

termite shield

sill seal

treated sill plate

hot-dipped nails

 


source

source
termite tunnels

ineffective termite shields

termite shield?

ant cap for straw bale wall


source

source

source 

source

IBC

edge distance?


source