Exposure – B
Use prescriptive design method. For all buildings located in Exposure C shall be designed under a professional engineer supervision.
The building shall not exceed three stories nor a mean roof height of 33 feet, measured from average grade to average roof elevation.
Member Spans, Spacing, Cantilever
Floor framing member spacings shall not exceed 24 inches on center
Floor joist cantilevers supporting loadbearing walls or shearwalls shall not exceed the depthof the joists.
Floor joist cantilevers supporting nonloadbearing walls shall be limited to L/4.
Wall Heights, Stud Spacing
- Load bearing walls shall not exceed 10 feet in height. Non-load bearing walls shall not exceed 20 feet in height.
- Wall stud spacing shall not exceed 24 inches on center
- Load bearing walls shall not exceed 10 feet in height.
- Non-load bearing walls shall not exceed 20 feet in height.
- Wall stud spacing shall not exceed 24 inches on center.
Shear Wall Line offsets, Story offsets, Orientation
- Offsets in a shear wall line within a story shall not exceed 4 feet segments by more than the depth of the floor framing members.
- Shear wall lines shall be oriented to resist loads in two orthogonal directions.
Roof Framing spans, Overhang, Spacing, slope
- Single spans (horizontal projection) of roof framing members shall not exceed 26 feet
for lumber rafters. The total roof span shall not exceed 36 feet.
- Rafter overhang lengths shall not exceed on-third of the rafter span or 2 feet, whichever is less.
- Roof framing member spacings shall not exceed 24 inches.
- Roof slope shall not exceed 12:12.
- Lateral and uplift Connections shall include:
- Roof framing connections.
- Roof Assembly to Wall Assembly.
- Top and bottom plates to wall studs.
- Wall Assembly to Floor Assembly.
- Floor assembly to sill, top plate, or girder.
- Wall Assembly or Sill Plate to Foundation.
Hold downs shall be installed in the shear walls to resist Overturning
Schedule Foundation Inspection