Slide 1. Slide 2. Slide 3. Lumber Standards and Specifications. Learning Objectives. Frank Stewart Western Wood Products Association

Transcription

1 Slide 1 Lumber Standards and Specifications Frank Stewart Western Wood Products Association Slide 2 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 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. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. Slide 3 Learning Objectives At the end of this program, participants will be able to: 1. Correctly reference lumber standards 2. Select the appropriate species & grades 3. Develop rough carpentry specifications 4. Develop finish carpentry specifications

2 Slide 4 WWPA Functions Quality Standards/Manufacturing Services Technical Services/Market Services Slide 5 Slide 6

3 Slide Billion Bd./Ft. (2004) vs Billion Bd./Ft/ (2009) Slide 8 Slide 9 Species Groups West Douglas Fir-Larch Hem-Fir (White Fir) Spruce-Pine-Fir (South) Western Cedars White Woods South Southern Pine Northeast Spruce-Pine-Fir (South) Canada Spruce-Pine-Fir

4 Slide 10 Slide 11 Slide Lumber. Lumber used for load-supporting purposes,... approved by an accreditation body that complies with DOC PS 20 or equivalent. IRC R502.1

5 Slide 13 National Grading Rule Committee American Lumber Standard Committee, Inc. ALSC Board of Review Rules writing agencies Inspection agencies Slide 14 Slide 15

6 Slide 16 Lumber Size Categories Nominal Sizes Timbers 5 x5 & larger Boards 1 thick & thicker 2 wide & wider Dimension 2 to 4 thick 2 wide & wider Slide 17 Slide 18

7 Slide 19 Slide 20 Moisture Content Standards Slide 21

8 Slide 22 Dry Green Weight relationship Slide 23 Moisture Content Designations S-GRN Greater than 19% MC S-DRY 19% or less KD Kiln dry 19% or less KD HT Kiln dry 19% or less and heat treated (56ºC core temperature 30 min.) MC 15 15% or less KD 15 Kiln dry 15% or less Slide 24

9 Slide 25 Green vs. dry sizes Dry Green Slide 26 Slide 27

10 Slide 28 Slide Shrinkage. Wood walls and bearing partitions shall not support more than two floors and a roof unless an analysis satisfactory to the building official shows that shrinkage of the wood framing will not have adverse effects on the structure or any plumbing, electrical or mechanical systems, or other equipment installed therein Slide 30

11 Slide 31 Slide 32 Slide 33

12 Slide 34 Slide 35 Identification Slide 36

13 Slide 37 Slide 38 Slide Lumber. Lumber used for load-supporting purposes, including end-jointed or edge-glued lumber, machine stress-rated or machine evaluated lumber, shall be identified by the grade mark of a lumber grading or inspection agency that has been approved by an accreditation body that complies with DOC PS 20 or equivalent. IRC R502.1

14 Slide 40 Rough Carpentry Specifications Slide 41 Dimension Products Slide 42

15 Slide 43 Use Categories Structural Light Framing Light Framing Studs Structural Joists and Planks Timbers Slide 44 Lumber Design Values ASTM D 1990 Dimension Lumber ASTM D 2555 ASTM D 245 Slide 45

16 Slide 46 Slide 47 Slide 48

17 Slide 49 Slide 50 Slide 51

18 Slide 52 Slide 53 Slide 54

19 Slide 55 Slide 56 Slide 57

20 Slide 58 Slide 59 Finish Carpentry Specifications Slide 60 Non-Structural Lumber

21 Slide 61 Slide 62 Slide 63 Appearance Grades Selects Finish Commons Special Siding/Paneling Special Western Red Cedar

22 Slide 64 Slide 65 Slide 66 Uppers (MC 15%) Selects Special WRC Finish Clear Heart B&Btr A C Superior D B Prime E

23 Slide 67 Slide 68 Knotty (S-GRN/S-DRY) Common Knotty Cedar Alternate 2&Btr Select Knotty Select Merch 3 Quality Knotty Construction 4 Standard Utility 5 Economy Slide 69

24 Slide 70 Questions? Slide 71