A companion Supplement to Span Tables for Joists and Rafters, Design Values for Joists and Rafters tabulates allowable bending (Fb) and modulus of elasticity (E) design values for visually graded and mechanically graded dimension lumber.
This edition has been updated to the 2012 NDS Design Values Supplement. Changes include new design values for Coast Sitka Spruce and Yellow Cedar and updates to Northern Species design values.
If there is a change to lumber design values in 2012, affected AWC design standards and design aids would be amended accordingly. Once amended, electronic versions of those documents will be available on the AWC website. To ensure that those downloading this document can be made aware of any updates, this version of 2012 Design Values for Joists and Rafters is password protected.