Outline of Presentation 1) NLGA Background & Responsibilities - - PowerPoint PPT Presentation

Outline of Presentation

1) NLGA Background & Responsibilities 2) Overview of In-grade Testing & Design Value Monitoring in Canada Conducted by NLGA in Canada

a) In-grade Testing b) Design Value Monitoring i. S-P-F ii. D Fir-L (N)

• iii. Hem-Fir (N)

c) Other In-grade Projects d) Norway Spruce

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NLGA Ba A Backg ckgro round

 Incorporated in January 1971 to amalgamate all Canadian lumber grading rules under one rule.  NLGA’s role is to:  establish;  publish & issue;  interpret; and  maintain & amend Lumber Grading Rules & Special Product Standards for all Canadian species of lumber.  And:  establish; and  monitor Lumber design values for Canadian species for use in the USA as approved by ALSC and in Canada as assigned by CSA O86.

NLGA GA Orga ganiza nizatio tion n Cha hart rt

BOARD OF DIRECTORS (11 Agency Representatives) EXECUTIVE COMMITTEE NLGA STAFF (2) STANDARDS COMMITTEE Oversees Special Products Standards Maintenance, Interpretation & Development GRADE COMMITTEE Oversees Visual Grading Rule Maintenance, Interpretation & Development SPECIAL COMMITTEES NLGA Lumber Properties Steering Committee (NLPSC) Technical Advisory Committee (TAC)

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NLGA Ba A Backg ckgro round

 NLGA Standards and Rules are developed: a) by ‘ balanced consensus' committees (includes lumber producers, consumers, users, academia, government & regulatory authorities); b) following ‘due process'; c) through a ‘transparent and accountable' voting process; d) with a ‘rigorous procedure’ for resolving negatives.  Approvals: a) There is a two-level NLGA approval process: i) Committee (ie. Standards or Grade Committee) ii) NLGA Board b) Followed by CLSAB & ALSC approvals.

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• NLGA Standard Grading Rules for Canadian Lumber
• Special Product Standards – SPS 1 through SPS 6
• For FJ, MGL and Face/Edge Glued Lumber
• Canadian Lumber Grading Manual

NLGA P Pub ublic icatio tions ns

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NLGA Ba A Backg ckgro round (Con’t)

 NLGA Grade Rules & Standards are referenced in the National Building Code of Canada (NBCC);  Design values referenced in the NBCC for Canadian species groups are assigned by CSA O86

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NLGA Ba A Backg ckgro round (Con’t)

 NLGA Rules & Standards are also: 1) Recognized in the U.S. through the ALSC - whose authority is granted under the U.S. Voluntary Softwood Standard PS 20; & 2) NLGA lumber design values for the U.S. are published in the ANSI/AWC NDS Supplement – Design Values for Wood Construction (2012 Edition).

1) 2)

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NLGA Ba A Backg ckgro round (con’t)

 Canadian Wood Council (CWC) provides engineering & technical support to NLGA for design values at CSA O86 and ALSC

(www.cwc.ca)

 FP Innovations does research, testing & provides some tech support to NLGA (www.fpinnovations.ca)

Outline of Presentation

1) NLGA Background & Responsibilities 2) Overview of In-grade Testing & Design Value Monitoring in Canada Conducted by NLGA in Canada

a) In-grade Testing b) Design Value Monitoring i. S-P-F ii. D Fir-L (N)

• iii. Hem-Fir (N)

c) Other In-grade Projects d) Norway Spruce

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Lumbe ber I r In- gr grade de T Testing ting

 4 Species Groups for Canada;  S- P- F; F;  D Fi D Fir- L (N L (N); );  He Hem- Fir ( ir (N); ); &  Nor

• rth

thern Spe pecie ies.  Current design values (Limit States Design - LSD) and Allowable Stresses:  Were established through In-grade sampling & testing in the early 1980’s; and  Design values were approved and published in the early 1990’s;

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NLGA’s Lumber Design Value Monitoring Commitment

Lumber De Design V ign Value ues

In Sep 1998, the NLGA Board re-affirmed its commitment to the monitoring clause stated in ASTM D1990 ‘Establ blishi hing ng Allo llowa wable le Pro rope pert rties for

• r Vis

isua ually- Gra Graded Dime mensi sion Lumb mber fr from In In- grade de Test sts of

• f

Fu Full- Si Size ze Specimens’ and proceeded with monitoring of programs on an on-going basis and has conducted monitoring of its major species ever since.

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Lumber Design Value Monitoring

Lumber De Design V ign Value ues (Con’t)

 NLGA has been conducting monitoring studies since 1999;  The purpose is to verify that there has not been significant change to species group design values due to resource or mill practice change.  In-grade monitoring is now a mandatory requirement under ALSC (ASTM D1990) for major species groups (i.e. S-P-F, D Fir-L (N) & Hem-Fir (N) in Canada and SYP, SPFs, D Fir-L & Hem-Fir in the U.S.)

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Lumber Design Value Monitoring

Lumber De Design V ign Value ues (Con’t)

 NLGA must conduct a monitoring study as required in ASTM D1990 on each major species group <S-P-F, D Fir-L (N) and Hem-Fir (N)> under its control at least once every five (5) years using a pre-approved sampling and testing plan.  A report with NLGA’s findings and test data must be submitted to ALSC for analysis by the USFPL to determine if the published design values have been maintained.

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Lumber Design Value Monitoring (S-P-F)

Lumber De Design V ign Value ues (Con’t)

• Monitoring Studies for S-P-F were conducted:
• 1999-2000 (Phases 1 & 2);
• 2007 (Pilot Study 1);
• 2008 (Pilot Study 2);
• 2010-11 (Ramp-up Study);
• 2011-2012 (Year 1 - Longitudinal Study); and
• 2012-2013 (Year 2 - Longitudinal Study)
• All test results supported the published design

values

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Lumber Design Value Monitoring (S-P-F) (Con’t)

Lumber De Design V ign Value ues (Con’t)

Date Study Size & Grade Property Result 2013-14 Year 3 (Longitudinal Study) 2x4 / No. 2 / 8’ MOE / MOR

• Testing just completed

2015 Year 4 (Longitudinal Study) 2x4 / No. 2 / 8’ MOE / MOR

• Mill survey information for

2014 shipments is being collected

• Sample collection is

expected begin in June 2015 2013-14 2013 Study 2x10/No. 2/16’ MOE / MOR

• Confirmed that there was

no significant downward shift in the MOE or MOR properties

S-P-F Monitoring Regions

• For S-P-F In-grade: There were 14 sampling regions
• For Monitoring S-P-F: 4 Mega-regions are sampled (II to V)

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Lumber Design Value Monitoring - D Fir-L (N)

Lumb mber Design Values (Con’t)

• Monitoring Studies for D Fir-L (N) were conducted:
• 2002; 2011-12; 2012-13;
• All test results supported the published design values
• 2013-14:

Testing has just been completed;

• For 2015:
• Mill survey information for 2014 shipments is

being collected; and

• Sample collection is expected to commence in

June 2015

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Lumber Design Value Monitoring – Hem-Fir (N)

Lumb mber Design Values (Con’t)

• A Monitoring Study for Hem-Fir (N) was conducted

in 2005; All test results supported the published design values;

• In 2011-12, a Year 1 Hem-Fir (N) study was

conducted and the results initiated Verification Phase sampling and testing as required under ASTM D1990;

• In 2013-14, Year 2 of the monitoring study data

confirmed Year 1 findings;

• 2x4X8’ No. 2 samples were tested for these studies

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Lumber Design Value Monitoring – Hem-Fir (N)

Lumb mber Design Values (Con’t)

• In 2014, the Hem-Fir (N) Verification Phase sampling and

testing study was conducted as required under ASTM D1990;

• 2x4x8” No. 2 and 2x10x16’ No. 2 were sampled and tested for

the verification phase. ALSC (US FPL) approved this approach.

• All test results supported the published design values
• U.S. FPL sent NLGA a letter agreeing that “the verification

study gave no reason to believe that there has been a significant downward shift in MOE or MOR.”

• Sample collection for the Hem-Fir (N) 2015 monitoring study is

expected to commence in June 2015.

D Fir-L (N) & Hem-Fir (N) Monitoring Region

• For D Fir-L (N) & Hem-Fir

(N) In-grade: There were 4 sampling regions

• For Monitoring: 1 Mega-

region is sampled (BC only)

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Other Design Value Projects

Lumber Design Values (Con’t)

Date Project Size & Grade Results

2004 S-P-F MSR Monitoring Study 2x4 2100 Fb-1.8E & 1650 Fb 1.5E

• Supports published MOE, MOR & UTS

values for S-P-F MSR lumber 2005 Yellow Cedar/ Sitka Spruce 2x4, 2x6 & 2x8 SS and No. 2

• ALSC and CSA O86 approved new design

values for Yellow Cedar & Sitka Spruce 2005 D Fir-L (N) / Hem-Fir (N) #1&Btr

• No. 1&Btr

2x4, 2x8 & 2x10 SS and No. 2

• ALSC approved new design values for No.

1 & Btr D Fir-L (N) & Hem-Fir (N) 2013- 2016 Hem-Fir (N) Timber In-grade SS and No. 2 6x6 to 12x14

• ALSC approved sampling plan
• Testing completed in June 15
• Analysis to begin

Future

• Over time other widths, grades & properties of existing species may be tested

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Norway Spruce Test Programs

Lumber Design Values (Con’t)

Date Project Size & Grade Property 1999 - 2001 2 UNB - MLB Norway Spruce Exploratory Studies 2x4, 2x6 & 2x8 SS, No. 1 and No. 2 (8’ to 16’) MOE, MOR, UCS & UTS 2004 - 2007 Establishing Canadian Norway Spruce Design Values (Includes Que & ON data) 2x4, 2x6 & 2x8 SS and No. 2 (8’ to 16’) MOE, MOR, UCS & UTS

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Norway Spruce Current Status

Lumber Design Values (Con’t)

• Norway Spruce is a non-native species
• Plantation grown
• Maritimes to Quebec (in commercial

volumes)

• NSpr was added as a species to NLGA

Grade Rule – Allows Norway Spruce to be used for non-structural purposes only

Norway spruce Growth Region

Lumber Design Values (Con’t)

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Norway Spruce Task Group Activities

Lumber Design Values (Con’t)

• An NLPSC NSpr Task Group is currently

reviewing several options for developing NSpr design values with the goal of making recommendations to the NLPSC.