Span Tables

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Span Tables for Joists and Rafters 2005
47 pages (331 KB PDF)

Span Tables for Joists and Rafters, 2005 Edition updates the 1993 edition below and provides a simplified system for determining allowable joist and rafter spans for typical loads encountered in one- and two-family dwellings.

A tutorial for using the span tables is also available.

 

Design Values for Joists and Rafters 2005
25 pages (204 KB PDF)

A companion Supplement to Span Tables for Joists and Rafters, Design Values for Joists and Rafters tabulates allowable bending stress (Fb) and elastic modulus (E) values for visually graded and mechanically graded dimension lumber

This edition has been updated to the 2005 NDS Supplement Design Values.

Wood Structural Design Data1986 Edition with 1992 Revisions
264 pages (PDF)

Wood Structural Design Data, 1986 Edition, provides information related to design of typical wood structural members. These data are augmented by reference to the National Design Specification for Wood Construction, particularly on the subject of design stresses. Tabular data in this volume are presented as a convenient aid in design of most frequently encountered elements of wood structural framing.

Have a vintage 1986 version already? Update your 1986 printed copy with the 1992 revisions / errata.

Looking for Span Tables for Random Length Decking?

Check out these free document downloads:
WCD 2 - Tongue and Groove Roof Decking
WCD 4 - Plank-and-Beam Framing for Residential Buildings

Online Span Calculators
The online AWC Span Calculator performs calculations for ALL species and grades of commercially available softwood and hardwood lumber as found in the NDS 2005 Supplement.