Builder’s Corner
   

Exposure – B

Use prescriptive design method. For all buildings located in Exposure C shall be designed under a professional engineer supervision.

Building Height

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.

Connections

  • 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







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