CSA O86: Engineering design in wood

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CSA O86:19 Engineering design in wood + Errata 1, 2, 3

| Format: PDF| Quality: Scanner| Year: 2019| pages: 342

This is the eleventh edition of CSA O86, Engineering design in wood. It is presented in limit states design (LSD) format and supersedes the previous editions published in 2014, 2009, 2001, 1994, 1989, 1984, 1980, 1976, 1970, and 1959, including their Supplements.

Editions of CSA O86 published in 1959, 1970, 1976, 1980, and 1984 were all developed using working stress design (WSD) theory. The last WSD version, CSA CAN3-O86-M84, Engineering design in wood (working stress design), existed concurrently with the first (1984) and second (1989) LSD versions, Engineering design in wood (limit states design). The WSD version was withdrawn on publication of the 1994 LSD edition.

Three LSD editions were published in 1984, 1989, and 1994 with the CSA designation O86.1. Supplements to each of these editions were published in 1987, 1993, and 1998, respectively. Although the 2001 edition was also based on the LSD method, the O86 designation was reinstated.

Significant changes in this edition include the following:

• editorial changes and some reformatting and restructuring of all clauses for clarity of layout, especially Clauses 11 and 12;

• revisions to design provisions for vibration serviceability of joisted floor systems;

• revisions to add Structural Face-Glued Lumber grade-stamped NLGA SPS 5 and SPS 6 wood products, and Face-Glued/Finger-Joined Lumber Vertical Stud Use Only grade-stamped NLGA SPS 5 and SPS 6 wood products;

• modification of Table 6.6 to revise specified strengths for Hem-Fir beams and stringers;

• modification of Table 6.8 to include 38 mm × 64 mm (2 in × 3 in) dimension under the Tension Specified Strengths;

• modification of Table 9.3 to add W24 rated oriented strand board (OSB);

• revisions to clarify shear resistance of members with notches;

• revisions to the KZc factor for sawn lumber;

• revisions to the application of system factor, KH;

• corrections to the limit of the length of the notch on the compression side;

• updates to cross-laminated timber (CLT) terminology and symbols;

• deletion of shear form factor for CLT;

• revisions to maximum nail diameter for shearwalls, and new references for nails;

• revisions to diaphragm configuration diagrams;

• revisions to Nu for shearwall and diaphragm;

• revisions to wood member thickness for nail and wood screw joints;

• revisions to Clause 11.9 for the design of CLT shearwalls and diaphragms for platform-type construction;

• revisions to requirements and added references to dowels in various clauses;

• addition of Table A.22 for ASTM nails; and

• editorial revisions to Annex B, on fire resistance of large cross-section wood elements for clarity.

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

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CSA O86:24 Engineering design in wood

| Size: 20.52 MB| Format: PDF| Quality: Original preprint| Year: 2024

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