Learning Objectives. both AIA members and non-aia members are available upon request.

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1 Lumber Grading and The Wood Products Council is a Registered Provider with The American Institute of Architects Continuing Education Systems (AIA/CES). Credit(s) earned on completion of this program will be reported to AIA/CES for AIA members. Certificates t of Completion for both AIA members and non-aia members are available upon request. This program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Presented by: John Buddy Showalter, P.E. Vice President, Technology Transfer Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. Copyright American Wood Council. All rights reserved. Copyright Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited. American Wood Council 2011 Learning Objectives At the end of this program, participants will be knowledgeable of: 1. What information grade marks should contain. 2. How grading is done. 3. Variations in grade marks such as are found on finger- jointed lumber. 4. Code-accepted alternatives to a grade mark.

2 IRC R502.1: Load-bearing dimension lumber for joists, beams and girders shall be identified by a grade mark of a lumber grading or inspection agency that has been approved by an accreditation body that complies with OC PS 20. R602.1 and R802.1 are similar ACME S-ry Lumber grade Lumber grade ACME S-ry ACME S-ry Lumber species

3 Lumber grade Lumber grade ACME S-ry Lumber species Trademark or logo ACME S-ry Lumber species Moisture content Moisture content Lumber grade Trademark Mill identification ACME S-ry Lumber species Heat-treated to kill insects for international ACME shipments HT S-ry Moisture content

4 IRC R502.1*: Load-bearing dimension lumber for joists, beams and girders shall be identified by a grade mark of a lumber grading or inspection agency that has been approved by an accreditation body that complies with OC PS 20. * R602.1 and R802.1 are similar OC PS 20 IRC R502.1: Load-bearing dimension lumber for joists, beams and girders shall be identified by a grade mark of a lumber grading g or inspection agency that has been approved by an accreditation body that complies with OC PS 20. A i L b St d d C itt American Lumber Standards Committee Untreated wood program Untreated facsimile list

5 Grade Trademark/Logo Mill I Moisture content

6 Machine evaluated Correlates stiffness (machine stress rated) or density (machine evaluated) to other properties Trademark/Logo Mill I Moisture content Wood species

7 IRC R502.1: Load-bearing dimension lumber for joists, beams and girders shall be identified by a grade mark of a lumber grading g or inspection agency that has been approved by an accreditation body that complies with OC PS 20. In lieu of a grade mark, a certificate of inspection issued by a lumber grading or inspection agency meeting the requirements of this section shall be accepted. : Certificate of Inspection Not manufacturer/supplier letter From ALSC-approved grading/inspection agency Assurance that lumber conforms with grading rules Letterhead of accredited agency Information about lumber Grade & species Moisture content Size & number of pieces inspected Identifying mark on each piece Finger Jointed Lumber Widely accepted for use by IBC and IRC Interchangeable with solid sawn lumber with certain limitations: HRA NON-HRA Wet service Oi Orientation ti Finger Jointed Lumber HRA Heat Resistant t Adhesive esignated on grade stamp Used where fire rated assemblies are required by code Exterior walls welling unit separations Commercial tenant separations

8 Finger Jointed Lumber Finger Jointed Lumber NON-HRA Adhesive not rated for heat resistance esignated on grade stamp HRA marks absent? Treat same as NON-HRA? Finger Jointed Lumber Adhesive Performance Testing ASTM ASTM adhesive to sustain ASTM E119 fire test t of load-bearing endjointed stud wall assembly loaded to 100% of allowable design load for 1-hour Finger Jointed Lumber Other Stamp esignations Exterior Use allowed Structural applications are not limited Must meet HRA criteria in rated assemblies

9 Finger Jointed Lumber Other Stamp esignations STU USE ONLY or VERT USE ONLY Finger Jointed Lumber Other Stamp esignations Old grade marks Limited to use where bending or tension stresses are of short duration NS Chapter 4 Lumber esign values Visually graded lumber MSR / MEL Timber ecking NS 2005 Supplement Sawn Lumber Grading Agencies 2 Species Combinations 3 Section Properties 4 esign Values - Lumber, Timber, and ecking - MSR and MEL -Non-North North American Sawn Lumber

10 2005 NS Supplement - Lumber Visually graded dimension lumber (Table 4A) 2005 NS Supplement Visually Graded imension Lumber (Table 4B) 2005 NS Supplement Mechanically Graded imension Lumber (Table 4C) MSR and MEL 2005 NS Supplement Visually Graded Timber (Table 4)

11 2005 NS Supplement Visually Graded ecking (Table 4E) 2-4 thick Various widths 2005 NS Supplement Non-North North American Species (Table 4F) ifferent from 5/4 decking Span rated per ALSC policy Usually rated at on center Stress Rated Boards Species not in NS Nominal 1", 1-1/4", 1/4 and 1-1/2 1/2 Southern Pine Inspection Bureau 2002 Standard Grading Rules for Southern Pine Lumber Section 265 stress rated boards Industrial 55 (IN 55)» graded per No. 1 dimension Industrial 45 (IN 45)»graded d per No. 2 dimensioni Industrial 26 (IN 26)» graded per No. 3 dimension Foreign species mahogany, ipe, greenheart, etc., omestic species ash, locust, magnolia, walnut, etc., Wood Handbook average unadjusted ultimate values need to be adjusted per ASTM 245 Not grade stamped in accordance with ALSC Engineering judgment

12 Tongue and Groove Roof ecking WC #2 Tongue and Groove Roof ecking Specialty lumber product Nominal 3 and 4 decking especially well adapted for use with glued laminated arches Course Evaluations In order to maintain high-quality learning experiences, please access the evaluation for this course by logging g into CES iscovery and clicking on the Course Evaluation link on the left side of the page. Questions? This concludes The American Institute of Architects Continuing Education Systems Course info@awc.orgorg