TDL - Structural Products - Lumber
American Forest & Paper Association
Allowable Stress Design (ASD) Manual for Engineered Wood Construction
Includes structural lumber supplement. Over 900 pages. #T101.
Load and Resistance Factor Design (LRFD) Manual for Engineered Wood Construction
Includes structural lumber supplement. Over 700 pages. #T80.
Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings - (2001 Edition)
Includes span tables for lumber used in floor, wall, ceiling and rafter applications. #T10-01.
Changes in the 2001 NDS for Wood Construction
The 2001 NDS contains many changes from the previous edition, which are summarized in this article.
Designing with Lumber in the 2001 NDS
Changes from the 1997 NDS relating to lumber design are discussed in this paper. In addition, several relevant items on lumber design values and lumber grade stamps not covered in the 2001 NDS are reviewed.
Wood Structural Design Data (WSDD)
Technical manual on design of typical wood structural members. Includes data and statistical tables on mechanical and physical properties of lumber, terminology, symbols, design formulas and load tables for large beams, columns, and floor joists. 1986 edition with 1992 revisions. 260 pages. #T05.
Span Calculator (Span Tables for Joists and Rafters)
Online Span Calculator. Joist and rafter span tables for dimension lumber. #T03. Includes 2001 design values for joists and rafters.
DCA No.3 - Fire Rated Wood Floor and Wall Assemblies
Describes how interior and exterior wood-frame walls can be used to meet building code requirements for fire resistive assemblies.
Span Tables for Joists and Rafters - 1993 Edition (For reference purposes).
Joist and rafter span tables for dimension lumber. #T03. Includes 1992 design values for joists and rafters. 44 pages. #T04.
American Lumber Standard Committee, Inc.
Certified Grading Rules
Lists grading rules and accredited agencies. Shows typical grade stamps.
California Redwood Association
Redwood Grades and Uses
Illustrates Redwood lumber properties. 4 pages.
Redwood Architectural Guide
Redwood lumber for exterior and interiors. Includes patterns, grades, and finishing details. 8 pages.
Dimensional Stability of California Redwood
Technical Data Sheet on the low relative shrinkage of Redwood. 4 pages.
Canadian Wood Council
The U.S. Span Book for Major Lumber Species
Span tables for Canadian and U.S. dimension lumber.
SpanCalc
This on-line utility provides a convenient reference for spans of common species of Canadian and U.S. dimension lumber. Available online here. Additional online utilities are available here.
Canadian Lumber Properties
Provides engineers, architects, scientists and code developers with a source of information on the structural properties of Canadian softwood lumber derived from full-size ("in-grade") tests.
Southern Pine Council
Southern Pine Use Guide
Grade descriptions, design values, and sample specifications. Includes treated Southern Pine, storage, fire, and sound data. 24 pages. #200.
Southern Pine Joists & Rafters: Maximum Spans
Joist and rafter span tables for Southern Pine lumber. 36 pages. #202.
Southern Pine Headers & Beams
Size selection and allowable load tables for headers and beams. Includes single and multiple-member Southern Pine lumber, plus Southern Pine glued-laminated timber. 36 pages. #207.
West Coast Lumber Inspection Bureau
Grade Stamps for West Coast Lumber
Describes how to read and interpret a grade stamp. Shows examples of grade stamp facsimiles.
Simplified Span Tables for Light Frame Construction
Span tables for floor and ceiling joists and rafters of Western lumber species. 8 pages.
Allowable Property Values for Softwood Species
Allowable design values in size specific tables with Base Values and size adjustment factors already multiplied out. Tables list species groups. Also available in metric units. 12 pages.
Comparing Machine Stress Rated and Visually Graded Lumber in Walls and Columns. Technical Report No. 1
Assists in selecting grades and comparing the performance of Machine Stress Rated (MSR) lumber and visually graded lumber in walls and columns. 22 pages.
Western Red Cedar Lumber Association
Designer’s Handbook
Describes features and physical properties of Western Red Cedar. Includes tables covering density, sizes, and design values of Western Red Cedar.
Western Wood Products Association
Western Woods Use Book (WWUB)
Western species and grade information, design data, formulas and example problems, shear and moment diagrams, beam design, tables for Western lumber and timbers, column tables, lateral forces information, mechanical connections. Update package includes the 2001 NDS® and other updated technical data.
Western Lumber Product Use Manual (A)
Proper selection, specification, and use of Western species; standard sizes and grades; Base Values along with size and repetitive member adjustment factors; Western species combinations; MSR lumber, posts and timbers, structural decking; finger-jointed grades; span tables; appearance grades and sizes; industrial lumber; properties of sections.
Dimensional Stability (TG-3)
Research data on the dimensional stability of Western species. Supported by graphs and charts.
Machine Stress-Rated Lumber (TG-4)
What MSR lumber is, how to specify it, quality control procedures, and code acceptability.
WWPA Grade Stamps (TG-6)
Facsimiles and descriptions of WWPA grade stamps for identifying lumber.
Structural Glued Lumber (TG-9)
Advantages, classifications, design values, etc., of end-jointed, edge- and face-glued lumber.
Spanmaster™ for Western Lumber (SM)
Hand-held electronic calculator for designing simply supported, uniformly loaded Western lumber beams, headers, joists, and rafters.
Span Computer (SR)
Slide rule to figure spans, spacing, and loading of Western lumber joists, rafters, and beams.
Lumber Design Suite (DSD-1)
A CD featuring a Microsoft Excel-based program providing calculations for WWPA lumber beams, joists, posts, studs and single shear connections.
Western Lumber Size-Adjusted Values (571)
Base Values for Western lumber multiplied by size and repetitive member adjustment factors. Size-specific design value tables for each of six species combinations.
TN-1: Design Load Tables for Wood Studwalls Subjected to Wind Pressure - 6 pages.
A useful set of design load tables for Douglas Fir-Larch and Hem-Fir lumber according to the 1991 edition of ANSI/AF&PA National Design Specification (NDS©) for Wood Construction.
TN-3: Design Values for ES-LP (Engelmann Spruce-Lodgepole Pine) MSR Grades of 1650 & Higher - 2 pages.
Engelmann Spruce-Lodgepole Pine Machine Stress-Rated (MSR) lumber is not often fully utilized for engineered wood systems. This Tech Note offers a procedure for taking advantage of ES-LP MSR lumber's high gravity, compression perpendicular-to-grain and horizontal shear design values.
Ponderosa Pine (FS-2)
Background on Ponderosa Pine forests, manufacturing, grade classifications, treating considerations for outdoor use and specific end-use recommendations.
Douglas Fir/Western Larch (FS-3)
Forestry and growing region, harvesting, species attributes, manufacturing, grade classifications, recommended applications and end uses, and treating considerations for Western species and/or species combinations.
Hem-Fir (FS-4)
Explains the Western Hemlock/True Firs species combination, growing region, characteristics, grades, physical properties and end-use recommendations.
Wood Truss Council of America
Truss Technology in Building: Lumber Grades
This document explains the difference between visual, machine stress rated (MSR) and machine evaluated (MEL) grades of dimensional lumber and how to read all of these types of lumber grade stamps. It also provides a list of American Lumber Standard Committee approved grading agencies in the US and Canada. This document is part of the Truss Technology in Building series.
