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SHSC HVAC and Roof Replacement Smith Sinnett / 2020072 <br />Orange County, North Carolina <br /> <br />ROUGH CARPENTRY 06 10 00 - 2 <br />B. For lumber and plywood pressure treated with waterborne chemicals, place spacers between each bundle <br />to provide air circulation. <br />PART 2 - PRODUCTS <br />2.1 LUMBER, GENERAL <br />A. Lumber Standards: Comply with DOC PS 20, "American Softwood Lumber Standard," and with <br />applicable grading rules of inspection agencies certified by American Lumber Standards Committee's <br />(ALSC) Board of Review. <br />B. Inspection Agencies: Inspection agencies, and the abbreviations used to reference them, include the <br />following: <br />1. SPIB - Southern Pine Inspection Bureau. <br />2. WWPA - Western Wood Products Association. <br />C. Grade Stamps: Provide lumber with each piece factory marked with grade stamp of inspection agency <br />evidencing compliance with grading rule requirements and identifying grading agency, grade, species, <br />moisture content at time of surfacing, and mill. <br />D. For exposed lumber, furnish pieces with grade stamps applied to ends or back of each piece. <br />E. Where nominal sizes are indicated, provide actual sizes required by DOC PS 20 for moisture content <br />specified. Where actual sizes are indicated, they are minimum dressed sizes for dry lumber. <br />F. Provide dressed lumber, S4S, unless otherwise indicated. <br />G. Provide dry lumber with 19 percent maximum moisture content at time of dressing for 2-inch nominal <br />thickness or less, unless otherwise indicated. <br />H. Fire-Retardant-Treated Materials: <br />1. General: Where “treated wood” or “pressure treated wood” or other wood blocking or furring <br />located within wall assemblies is indicated comply with the applicable requirements of <br />AWPA C20 (lumber) and AWPA C27 (plywood). Identify fire-retardant-treated wood with <br />appropriate classification marking of UL; U, S. Testing; or Timber Products Inspections. Inc. <br />Provide written statement that the fire retardant chemicals used are compatible with materials to <br />which the treated wood is in contact. <br />I. Treatment Type: Interior Type A for protected wood and Exterior for wood exposed to weather. <br />2.2 WOOD-PRESERVATIVE-TREATED LUMBER <br />A. Preservative Treatment by Pressure Process: AWPA C2, except that lumber that is not in contact with the <br />ground and is continuously protected from liquid water may be treated according to AWPA C31 with <br />inorganic boron (SBX). <br />1. Preservative Chemicals: Acceptable to authorities having jurisdiction and containing no arsenic <br />or chromium. <br />2. For exposed items indicated to receive a stained or natural finish, use chemical formulations that <br />do not require incising, contain colorants, bleed through, or otherwise adversely affect finishes. <br />B. Kiln-dry lumber after treatment to a maximum moisture content of 19 percent. Do not use material that is <br />warped or does not comply with requirements for untreated material. <br />C. Application: Treat items indicated on Drawings, and the following: <br />1. Wood cants, nailers, curbs, equipment support bases, blocking, stripping, and similar members in <br />connection with roofing, flashing, vapor barriers, and waterproofing. <br />2. Wood sills, blocking, furring, and similar concealed members in contact with masonry or <br />concrete. <br />3. Wood framing and furring attached directly to the interior of below-grade exterior masonry or <br />concrete walls. <br />DocuSign Envelope ID: 94E7997D-4F29-42F6-A9B4-0A160438D2A6