Basic Shearwall Action

 

Shearwall Segment ≈ Cantilever

 

 

IBC h/b Limits

effective shear (deep-beam) resistance

link

 

 

Factors  (similar to diaphragms)

1. sheathing thickness

• sheathing loads
• stud spacing
• unit shear
• fire rating

IBC

NDS

 ASTM E119 Standard Test Methods for Fire Tests of Building Construction and Materials

 

2. shearwall nailing

• unit shear

 

3. chord design

• moment  (tension & compression)

 

4. collector design

• same members as diaphragm collectors
• forces covered in chapter 9  (tension & compression)

 

5. anchorage

• hold-downs
• shear

 house off foundation

 

6. shear panel proportions

• vertical clear distance between diaphragms
• IBC h/b limits

 

7. deflection

• IBC limits  (section 10.11)
• story drift

 

0:00 shim & shave
2:30 hold down, nailing