2012 Wood Frame Construction Manual for One- and Two-Family Dwellings & Commentary to the WFCM


In general, the framing systems described in the WFCM utilize repetitive member wood assemblies. The WFCM includes general information on loads and resistances. The limitations of applicability are provided in Chapters 2 and 3. Chapter 2 provides minimum loads for buildings within the scope of this document for the purpose of establishing specific resistance requirements. Note that Chapter 2 also contains some necessary construction details. These details have been derived from typical code provisions and are included in Chapter 2 for the convenience of the designer. Chapter 3 provides several prescriptive solutions derived from Chapter 2 load requirements. Therefore, it is perfectly acceptable to use Chapter 3 provisions for parts of a design and Chapter 2 for other parts.

The primary changes to the 2012 WFCM include:

  • Design load provisions are based on ASCE 7-10
  • Wood structural panels are permitted to resist wind uplift
  • Shear wall story offset provisions are clarified
  • Design values for lumber, engineered lumber and fasteners are based on the 2012 NDS
  • Engineering design values for horizontal diaphragm  and vertical wall assemblies are in accordance with SDPWS-08
  • Header tables include dropped and raised header conditions

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