Preproposal statement of inquiry was filed as WSR 98-14-125.

Title of Rule: Amendment to chapter 51-40 WAC; repeal Tables 23-II-I-1 and 23-II-I-2, Allowable shear tables.

Purpose: To repeal WAC 51-40-23110, the state amendment to Footnote 3 of each of the above tables, leaving Footnote 3 as published by the International Conference of Building Officials (ICBO) for the 1997 Edition of the Uniform Building Code (UBC).

Statutory Authority for Adoption: RCW 19.27.074, 19.27.031.

Statute Being Implemented: RCW 19.27.074 (1)(a).

Summary: The proposed rule would restore Footnote 3 of Tables 23-II-I-1 and 23-II-I-2 of chapter 51-40 WAC to the published language of ICBO for the 1997 UBC.

Reasons Supporting Proposal: After the adoption of WAC 51-40-23110, ICBO published an errata for Footnote 3 of UBC Tables 23-II-I-1 and 23-II-I-2 which caused the adopted state amendment to Footnote 3 to be incomplete and inaccurate.

Name of Agency Personnel Responsible for Drafting and Implementation: Tim Nogler, P.O. Box 48300, Olympia, WA 98504, (360) 586-0486; and Enforcement: Local jurisdictions.

Name of Proponent: Washington State Building Code Council, governmental.

Rule is not necessitated by federal law, federal or state court decision.

Explanation of Rule, its Purpose, and Anticipated Effects: The rule will repeal the language of WAC 51-40-23110, Tables 23-II-I-1 and 23-II-I-2, Footnote 3 as amended by the State Building Code Council, leaving the language for Footnote 3 as published by ICBO for the 1997 UBC Tables 23-II-I-1 and 23-II-I-2. The rule will allow changes contained in an errata from ICBO for Footnote 3 in these two tables to take effect. These changes are needed in the state building code so that structural engineers will have proper guidance from these two allowable shear tables for use in building design.

Proposal Changes the Following Existing Rules: In WAC 51-40-23110, the amendment of Footnote 3 for both Table 23-II-I-1 and Table 23-II-I-2 will be repealed as follows:

³In seismic zone 4, where allowable shear values exceed 350 pounds per foot (5.11 N/mm), foundation sill plates and all framing members receiving edge nailing from abutting panels shall not be less than a single 3 inch (76 mm) nominal member. Nails shall be staggered.

The original published ICBO language for Footnote 3 will remain, as adopted by reference in WAC 51-40-004: "³In Seismic Zones 3 and 4, where allowable shear values exceed 350 pounds per foot (5.11 N/mm), foundation sill plates and all framing members receiving edge nailing from abutting panels shall not be less than a single 3-inch (76 mm) nominal member and foundation sill plates shall not be less than a single 3-inch (76 mm) nominal member. In shear walls where total wall design shear does not exceed 600 pounds per foot (8.76 N/mm), a single 2-inch (51 mm) nominal sill plate may be used, provided anchor bolts are designed for a load capacity of 50 percent or less of the allowable capacity and bolts have a minimum of 2-inch-by-2-inch-by-3/16-inch (51 mm by 51 mm by 5mm) thick plate washers. Plywood joint and sill plate nailing shall be staggered in all cases."

No small business economic impact statement has been prepared under chapter 19.85 RCW. Minimal economic impact is anticipated.

RCW 34.05.328 does not apply to this rule adoption. The State Building Code Council is not identified by RCW 34.05.328 as an agency required to comply.

Hearing Location: Spokane City Council Chambers, Spokane City Hall, West 808 Spokane Falls Boulevard, on September 18, 1998, at 10:00 a.m.

Assistance for Persons with Disabilities: Contact Krista Braaksma by September 1, 1998, TDD (360) 753-2200, or (360) 753-5927.

Submit Written Comments to: Mike McEnaney, Chair, P.O. Box 48300, Olympia, WA 98504, fax (360) 586-5880, by August 16, 1998.

Date of Intended Adoption: November 13, 1998.

July 10, 1998

Mike McEnaney

Council Chair