SECTION (06100) - ROUGH CARPENTRY

Transcription

1 PART 1 GENERAL 1.01 SUMMARY SECTION (06100) - ROUGH CARPENTRY A. This Section includes the following: 1. Framing with the following: a. Dimension Lumber b. Engineered Wood Products 1) Laminated Veneer Lumber (LVL) 2) Parallel Strand Lumber (PSL) 3) Laminated Strand Lumber (LSL) c. Wood-Based Structural-Use Panels 1) Shear Wall Sheathing 2) Backing Panels d. Wood-Preservative Treated Materials e. Fire-Retardant-Treated Materials f. Glass-Fiber-Surfaced Exterior Gypsum Sheathing Board 2. Fasteners 3. Metal Framing Anchors 4. Rooftop Equipment Bases and Support Curbs 5. Wood Furring, Grounds, Nailers, and Blocking B. Related Sections: 1.02 REFERENCES 1. Section (06150) Wood Roof Decking 2. Section (06175) - Shop-Fabricated Wood Trusses 3. Section (08200) - Wood Doors 4. Section (09255) - Gypsum Board Assemblies 5. Section (10800) - Toilet, Bath, and Laundry Equipment 6. Section (06400) - Architectural Woodwork 7. Section (06415) - Plastic Countertops 8. Section (09380) - Stone Countertops 9. Section (06610) - Cultured Marble Countertops 10. Section (06620) - Solid Surfacing Countertops A. The American Forest & Paper Association (AFPA') Publications: 1. "National Design Specifications for Wood Construction" 2. "Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings" PAGE 1

2 B. American Lumber Standards Committee (ALSC) REVISED: 06/08/15 1. DOC PS 20, "American Softwood Lumber Standard" 2. DOC PS 1, "U.S. Product Standard for Construction and Industrial Plywood" 3. National Grading Rule (NGR) C. American Wood-Preservers's Association (AWPA) Publications: 1. C2 "Lumber, Timber, Bridge Ties and Mine Ties - Preservative Treatment by Pressure Processes" 2. C9 "Plywood - Preservative Treatment by Pressure Process Document Number" 3. M4 "Standard for the Care of Preservative-Treated Wood Products Document Number" D. ASTM International Publications: 1. A153 "Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware" 2. A307 "Standard Specification for Carbon Steel Bolts and Studs, PSI Tensile Strength" 3. A563 "Standard Specification for Carbon and Alloy Steel Nuts" 4. A653 "Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process" 5. B117 "Standard Practice for Operating Salt Spray (Fog) Apparatus" 6. C27 "Standard Classification of Fireclay and High-Alumina Refractory Brick" 7. C208 "Standard Specification for Cellulosic Fiber Insulating Board" 8. C578 "Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation" 9. C846 "Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing" 10. C954 "Standard Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs from in. (0.84 mm) to in. (2.84 mm) in Thickness" 11. C1177 "Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing" 12. D2559 "Standard Specification for Adhesives for Structural Laminated Wood Products for Use Under Exterior (Wet Use) Exposure Conditions" 13. D2898 "Standard Test Methods for Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing" 14. D5055 "Standard Specification for Establishing and Monitoring Structural Capacities of Prefabricated Wood I-Joists" 15. E84 "Standard Test Method for Surface Burning Characteristics of Building Materials" 16. E699 "Standard Practice for Evaluation of Agencies Involved in Testing, Quality Assurance, and Evaluating of Building Components" 17. F1667 "Standard Specification for Driven Fasteners: Nails, Spikes, and Staples" E. The Engineered Wood Association (APA) Publications: 1. Form No. E30, "APA Engineered Wood Construction Guide" F. Single Ply Roofing Industry (SPRI) Publications PAGE 2 FILE: CFRST-Rough Carpentry CFRST SPECMSTR-NEW BUILD 2015, Marriott International, Inc.

3 1.03 DEFINITIONS A. Rough Carpentry: Carpentry work not specified in other Sections and not exposed, unless otherwise specified. B. Dimension Lumber: Lumber that is precut in width and thickness to a standard size of 2 inches nominal or greater but less than 5 inches nominal in least dimension QUALITY ASSURANCE A. Testing Agency Qualifications: To qualify for approval, an independent testing agency must demonstrate to Owner s Representative satisfaction, based on evaluation of agency-submitted criteria conforming to ASTM E699, that it has the experience and capability to satisfactorily conduct the testing indicated without delaying the Work. B. Single-Source Responsibility for Fire-Retardant-Treated Wood: Obtain each type of fireretardant-treated wood product from one source and by a single producer DELIVERY, STORAGE, AND HANDLING A. Keep materials under cover and dry. Protect from weather and contact with damp or wet surfaces. Stack lumber, plywood, and other panels. Provide for air circulation within and around stacks and under temporary coverings. 1. For lumber and plywood pressure treated with waterborne chemicals, place spacers between each bundle to provide air circulation. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Avendra, LLC Preferred Manufacturers: 1. Laminated-Veneer Lumber (LVL): a. None. 2. Parallel-Strand Lumber (PSL): a. None. 3. Prefabricated Wood I-Joists (TJI): a. None. 4. Laminated Strand Lumber (LSL): a. None. 5. Oriented Strand Board (OSB) a. None. B. Approved Manufacturers: 1. Wood-Preservative-Treated Materials: a. Micro-Guard ; Hoover Treated Wood Products, Inc. ( ) b. MicroPro ; Osmose, Inc. ( ) 2. Fire-Retardant-Treated Materials, Interior Type A: a. "Dricon FRT"; Lonza Wood Protection ( ) b. Pryro-Guard ; Hoover Treated Wood Products, Inc. ( ) c. "FirePRO"; Osmose, Inc. ( ) PAGE 3

4 3. Fire-Retardant-Treated Materials, Exterior Type: a. FRX Exterior FRT"; Lonza Wood Protection ( ) b. Exterior Fire-X ; Hoover Treated Wood Products, Inc. ( ) 4. Laminated-Veneer Lumber (LVL): a. "VERSA-LAM"; Boise Building Solutions ( ) b. "Gang-Lam LVL"; Louisiana-Pacific Corp. ( ) c. RedLam LVL ; RedBuilt, LLC ( ) 5. Parallel-Strand Lumber (PSL): a. "Parallam PSL"; TrusJoist by Weyerhaeuser ( ) b. Parallam PSL ; RedBuilt, LLC ( ) 6. Laminated Strand Lumber (LSL): a. TrusJoist by Weyerhaeuser ( ) b. RedBuilt, LLC ( ) 7. Glass-Fiber-Surfaced Gypsum Sheathing Board: a. DensGlass Gold Exterior Sheathing ; Georgia-Pacific Corp. ( ) 8. Metal Framing Anchors: 2.02 LUMBER, GENERAL a. Hilti, Inc. ( ) b. Cleveland Steel Specialty Co. ( ) c. USP Lumber Connectors ( ) d. Simpson Strong-Tie Company, Inc. ( ) e. EMCO/Southeastern Metals/A Gibralter Co. ( ) A. Lumber Standards: Comply with DOC PS 20, "American Softwood Lumber Standard," and with applicable grading rules of inspection agencies certified by ALSC's Board of Review. B. Inspection Agencies: Inspection agencies, and the abbreviations used to reference them, include the following: 1. NELMA - Northeastern Lumber Manufacturers Association. 2. NLGA - National Lumber Grades Authority (Canadian). 3. RIS - Redwood Inspection Service. 4. SPIB - Southern Pine Inspection Bureau. 5. WCLIB - West Coast Lumber Inspection Bureau. 6. WWPA - Western Wood Products Association. C. Grade Stamps: Provide lumber with each piece factory marked with grade stamp of inspection agency evidencing compliance with grading rule requirements and identifying grading agency, grade, species, moisture content at time of surfacing, and mill. REVISED: 06/08/15 PAGE 4 FILE: CFRST-Rough Carpentry CFRST SPECMSTR-NEW BUILD 2015, Marriott International, Inc.

5 1. For exposed lumber, furnish pieces with grade stamps applied to ends or back of each piece, or omit grade stamps and provide grade-compliance certificates issued by inspection agency. D. Where nominal sizes are indicated, provide actual sizes required by DOC PS 20 for moisture content specified. Where actual sizes are indicated, they are minimum dressed sizes for dry lumber. 1. Provide dressed lumber, S4S, unless otherwise indicated. 2. Provide lumber with 15 percent maximum moisture content at time of dressing for 2-inch nominal thickness or less, unless otherwise indicated WOOD-PRESERVATIVE-TREATED MATERIALS A. General: Where lumber or plywood is indicated as preservative treated or is specified to be treated, comply with applicable requirements of AWPA C2 (lumber) and AWPA C9 (plywood). Mark each treated item with the Quality Mark Requirements of an inspection agency approved by ALSC's Board of Review. 1. Do not use chemicals containing chromium or arsenic. 2. For exposed items indicated to receive stained finish, use chemical formulations that do not bleed through, contain colorants, or otherwise adversely affect finishes. 3. Use treatment that does not promote corrosion of metal fasteners. B. Pressure treat above ground items with waterborne preservatives to a minimum retention of 0.25 lb/cu. ft. After treatment, kiln-dry lumber and plywood to a maximum moisture content of 19 and 15 percent, respectively. Treat indicated items and the following: 1. Wood cants, nailers, curbs, equipment support bases, blocking, stripping, and similar members in connection with roofing, flashing, vapor barriers, and waterproofing. 2. Wood sills, sleepers, blocking, furring, stripping, and similar concealed members in contact with masonry or concrete. 3. Wood framing members less than 18 inches above grade. 4. Wood floor plates installed over concrete slabs directly in contact with earth. C. Pressure treat wood members in contact with ground or freshwater with waterborne preservatives to a minimum retention of 0.40 lb/cu. ft. D. Complete fabrication of treated items before treatment, where possible. If cut after treatment, apply field treatment complying with AWPA M4 to cut surfaces. Inspect each piece of lumber or plywood after drying and discard damaged or defective pieces FIRE-RETARDANT-TREATED MATERIALS A. General: Where fire-retardant-treated wood is indicated, comply with applicable requirements of ASTM E84 (lumber) and ASTM C27 (plywood). Identify fire-retardant-treated wood with appropriate classification marking of UL; SGS U.S. Testing; Timber Products Inspection, Inc; or another testing and inspecting agency acceptable to authorities having jurisdiction. 1. Provide fire treated wood in all concealed areas of construction, as shown or indicated on the drawings, and as required by code. 2. Fire-Retardant-Treated Plywood by Pressure Process: Products with a flame spread index of 25 or less when tested according to ASTM E84, and with no evidence of significant progressive combustion when the test is extended an additional 20 minutes, and with the flame front not extending more than 10.5 feet beyond the centerline of the burners at any time during the test. PAGE 5

6 a. Use treatment that does not promote corrosion of metal fasteners. 3. Research or Evaluation Reports: Provide fire-retardant-treated wood acceptable to authorities having jurisdiction and for which a current model code research or evaluation report exists that evidences compliance of fire-retardant-treated wood for application indicated. 4. For exposed items indicated to receive stained finish, use chemical formulations that do not bleed through, contain colorants, or otherwise adversely affect finishes. B. Interior Type A: For interior locations, use chemical formulation that produces treated lumber and plywood with the following properties under conditions present after installation: 1. Bending strength, stiffness, and fastener-holding capacities are not reduced below values published by manufacturer of chemical formulation under elevated temperature and humidity conditions simulating installed conditions when tested by a qualified independent testing agency. Design value adjustment factors shall be calculated according to ASTM D No form of degradation occurs due to acid hydrolysis or other causes related to treatment. 3. Contact with treated wood does not promote corrosion of metal fasteners. 4. Treated materials shall have a moisture content of 28 percent or less when tested according to ASTM D3201 at 92 percent relative humidity. Use where exterior type is not indicated. C. Exterior Type: Use for exterior locations and where indicated. Comply with ASTM D2898. D. After treatment, kiln-dry lumber and plywood to a maximum moisture content of 19 and 15 percent, respectively E. Inspect each piece of treated lumber or plywood after drying and discard damaged or defective pieces DIMENSION LUMBER A. General: Provide dimension lumber of grades indicated according to the ALSC National Grading Rule (NGR) provisions of the inspection agency indicated MISCELLANEOUS LUMBER A. General: Provide lumber for support or attachment of other construction, including rooftop equipment curbs and support bases, cant strips, bucks, nailers, blocking, furring, grounds, stripping, and similar members. B. Fabricate miscellaneous lumber from dimension lumber of sizes indicated and into shapes shown. C. Moisture Content: 15 percent maximum for lumber items not specified to receive wood preservative treatment. D. Grade: For dimension lumber sizes, provide No. 3 or Standard grade lumber per ALSC's NGRs of any species. For board-size lumber, provide No. 3 Common grade per NELMA, NLGA, or WWPA; No. 2 grade per SPIB; or Standard grade per NLGA, WCLIB or WWPA of any species ENGINEERED WOOD PRODUCTS A. General: Provide engineered wood products acceptable to authorities having jurisdiction and for which current model code research or evaluation reports exist that evidence compliance with building code in effect for Project. PAGE 6 REVISED: 06/08/15 FILE: CFRST-Rough Carpentry CFRST SPECMSTR-NEW BUILD 2015, Marriott International, Inc.

7 1. Allowable Design Stresses: Provide engineered wood products with allowable design stresses, as published by manufacturer, that meet or exceed those indicated. Manufacturer's published values shall be determined from empirical data or by rational engineering analysis, and demonstrated by comprehensive testing performed by a qualified independent testing agency. B. Laminated-Veneer Lumber: Lumber manufactured by laminating wood veneers in a continuous press using an exterior-type adhesive complying with ASTM D2559 to produce members with grain of veneers parallel to their lengths. Comply with the following requirements: 1. Extreme Fiber Stress in Bending: 2,900 psi for 12-inch nominal-depth members. 2. Modulus of Elasticity: 2,000,000 psi 3. Tension Parallel to Grain: 1,600 psi 4. Compression Parallel to Grain: 2,635 psi 5. Compression Perpendicular to Grain: 750 psi perpendicular to and 480 psi and parallel to glue line. 6. Horizontal Shear: 285 psi perpendicular to and 190 psi parallel to glue line. C. Parallel-Strand Lumber: Lumber manufactured by laying up wood strands using an exteriortype adhesive complying with ASTM D2559, and cured under pressure to produce members with grain of strands parallel to their lengths and complying with the following requirements: 1. Extreme Fiber Stress in Bending: 2900 psi for 12-inch nominal-depth members. 2. Modulus of Elasticity: 2,000,000 psi 3. Tension Parallel to Grain: 2,025 psi 4. Compression Parallel to Grain: 2,900 psi 5. Compression Perpendicular to Grain: 750 psi perpendicular to and 475 psi and parallel to wide face of strands. 6. Horizontal Shear: 210 psi perpendicular to and 290 psi and parallel to wide face of strands. D. Microllam LVL Beams: 1. Microllam LVL as manufactured by TrusJoist by Weyerhaeuser or approved substitution by other listed manufacturers. 2. Construction: Continuous laminated veneer lumber free from finger or scarf joints. Stress graded veneers bonded with waterproof adhesive with face grain parallel to each adjacent layer. Provide Watershed Overlay coating and edge seal to prevent cupping and moisture damage. E. Parallam PSL Beams: 1. Parallam PSL as manufactured by TrusJoist by Weyerhaeuser, or approved substitution by other listed manufacturers. 2. Construction: Continuous parallel strand lumber bonded with waterproof adhesives and formed into billets. Beams shall be of single ply construction and free from finger joints or splices for full length of span. F. Laminated Strand Lumber (LSL) Headers: 1. Timberstrand LSL Headers as manufactured by TrusJoist by Weyerhaeuser, or approved substitution by other listed manufacturers. PAGE 7

8 2. Construction: Laminated strand lumber; strands of aspen or yellow poplar bonded with waterproof resins; cured using a steam injection process WOOD-BASED STRUCTURAL-USE PANELS, GENERAL A. Structural-Use Panel Standards: Provide either all-veneer, mat-formed, or composite panels complying with DOC PS 2, "Performance Standard for Wood-Based Structural-Use Panels," unless otherwise indicated. Provide plywood panels complying with DOC PS 1, "U.S. Product Standard for Construction and Industrial Plywood," where plywood is indicated. B. Structural-Use Panel Standard: Provide plywood panels complying with DOC PS 1, "U.S. Product Standard for Construction and Industrial Plywood." C. Trademark: Factory mark structural-use panels with APA trademark evidencing compliance with grade requirements CONCEALED, PERFORMANCE-RATED STRUCTURAL-USE PANELS A. General: Where structural-use panels are indicated for the following concealed types of applications, provide APA-performance-rated panels complying with requirements designated under each application for grade, span rating, exposure durability classification, and edge detail (where applicable). 1. Thickness: Provide panels meeting requirements specified but not less than thickness indicated. 2. Span Ratings: Provide panels with span ratings required to meet "Code Plus" provisions of APA Form No. E30, "APA Design/Construction Guide: Residential & Commercial." B. Wall Sheathing - Oriented-Strand-Board: 1. Exposure Durability Classification: Exposure 1, Structural I 2. Span Rating: 16/0 3. Minimum Thickness: As shown on Drawings STRUCTURAL-USE PANELS FOR BACKING A. Plywood Backing Panels: For mounting electrical or telephone equipment, provide fireretardant-treated plywood panels with grade, C-D Plugged Exposure 1, in thickness indicated or, if not otherwise indicated, not less than 15/32 inch thick GYPSUM SHEATHING A. 5/8 Glass-Fiber-Surfaced Gypsum Sheathing Board: Gypsum sheathing board consisting of noncombustible gypsum core incorporating a water-resistant material, surfaced on face and back with glass-fiber mats with alkali-resistant coating, and with unsurfaced square edges; complying with ASTM C FASTENERS A. General: Provide fasteners of size and type indicated that comply with requirements specified in this Article for material and manufacture. 1. Where rough carpentry is exposed to weather, in ground contact, or in area of high relative humidity, provide fasteners with a hot-dip zinc coating per ASTM A153 or of Type 304 stainless steel. 2. For fasteners and hardware used with treated wood products, comply with manufacturer s recommendations for their intended use. B. Nails, Wire, Brads, and Staples: ASTM F1667. REVISED: 06/08/15 PAGE 8 FILE: CFRST-Rough Carpentry CFRST SPECMSTR-NEW BUILD 2015, Marriott International, Inc.

9 C. Power-Driven Fasteners: NES NER-272. D. Wood Screws: ASME B E. Screws for Fastening Wood Structural Panels to Cold-Formed Metal Framing: ASTM C954, except with wafer heads and reamer wings, length as recommended by screw manufacturer for material being fastened. 1. For wall and roof sheathing panels, provide screws with organic-polymer or other corrosion-protective coating having a salt-spray resistance of more than 800 hours according to ASTM B117. F. Screws for Fastening Gypsum Sheathing to Cold-Formed Metal Framing: Steel drill screws, in length recommended by sheathing manufacturer for thickness of sheathing board to be attached, with organic-polymer or other corrosion-protective coating having a salt-spray resistance of more than 800 hours according to ASTM B117. Attach sheathing to comply with ASTM C954. G. Lag Bolts: ASME B H. Bolts: Steel bolts complying with ASTM A307, Grade A; with ASTM A563 hex nuts and, where indicated, flat washers METAL FRAMING ANCHORS A. General: Provide galvanized steel framing anchors of structural capacity, type, and size indicated and as follows: 1. Research or Evaluation Reports: Provide products for which model code research or evaluation reports exist that are acceptable to authorities having jurisdiction and that evidence compliance of metal framing anchors for application indicated with building code in effect for Project. 2. Allowable Design Loads: Provide products with allowable design loads, as published by manufacturer, that meet or exceed those indicated. Manufacturer's published values shall be determined from empirical data or by rational engineering analysis, and demonstrated by comprehensive testing performed by a qualified independent testing agency. 3. For metal framing anchors used with treated wood products, comply with manufacturer s recommendations for their intended use. B. Galvanized Steel Sheet: Hot-dip, zinc-coated steel sheet complying with ASTM A653, G60 coating designation; structural, commercial, or lock-forming quality, as standard with manufacturer for type of anchor indicated. C. Joist Hangers: U-shaped top mounted joist hangers with 2-inch-long seat and 1-1/4-inch-wide nailing flanges at least 85 percent of joist depth. D. Top Flange Hangers: U-shaped joist hangers, full depth of joist, formed from metal strap with tabs bent to extend over and be fastened to supporting member. 1. Designed for connection of engineered wood products, sized to support design loads. E. Bridging: Rigid, V-section, nailless type, inch thick, length to suit joist size and spacing. F. Post Bases: Adjustable-socket type for bolting in place with standoff plate to raise post 1 inch above base and with 2-inch minimum side cover, socket inch thick, standoff and adjustment plates inch thick. G. Joist Ties: Flat straps, with holes for fasteners, for tying joists together over supports. 1. Length: As required. PAGE 9

10 H. Rafter Tie-Downs (Hurricane Ties): Bent strap tie for fastening rafters or roof trusses to wall studs below, 1-5/8 inches wide by inch thick. I. Floor-to-Floor Ties: Flat straps, with holes for fasteners, for tying upper floor wall studs to band joists and lower floor studs, 1-1/4 inches wide by inch thick by 36 inches long. J. Hold-Downs: Brackets for bolting to wall studs and securing to foundation walls with anchor bolts or to other hold-downs with threaded rods and designed with first of 2 bolts placed 7 bolt diameters from reinforced base. K. Wall Bracing: Angle bracing made for letting into studs in saw kerf, 15/16 by 15/16 by inch thick with hemmed edges MISCELLANEOUS MATERIALS A. Sill-Sealer Gaskets: Glass-fiber-resilient insulation, fabricated in strip form, for use as a sill sealer; 1-inch nominal thickness, compressible to 1/32 inch; selected from manufacturer's standard widths to suit width of sill members indicated. B. Adhesives for Field Gluing Panels to Framing: Formulation complying with APA AFG-01 that is approved for use with type of construction panel indicated by both adhesive and panel manufacturers. C. Water-Repellent Preservative: NWWDA-tested and -accepted formulation containing 3-iodo- 2-propynyl butyl carbonate (IPBC) as its active ingredient. PART 3 EXECUTION 3.01 INSTALLATION, GENERAL A. Discard units of material with defects that impair quality of rough carpentry and that are too small to use with minimum number of joints or optimum joint arrangement. B. Set rough carpentry to required levels and lines, with members plumb, true to line, cut, and fitted. C. Fit rough carpentry to other construction; scribe and cope as required for accurate fit. Correlate location of furring, nailers, blocking, grounds, and similar supports to allow attachment of other construction. D. Apply field treatment complying with AWPA M4 to cut surfaces of preservative-treated lumber and plywood. E. Securely attach rough carpentry work to substrate by anchoring and fastening as indicated, complying with the following: 1. Published requirements of metal framing anchor manufacturer. 2. "Recommended Nailing Schedule" of referenced framing standard and with AFPA's "National Design Specifications for Wood Construction." And "Details for Conventional Wood Frame Construction" 3. "Table Fastening Schedule" of the International Building Code. F. Secure blocking for roof edge systems, such as copings or gravel stops, in accordance with SPRI Wind Design Standards as specified in Section Flashing and Sheet Metal and the requirements of the International Building Code. G. Use common wire nails, unless otherwise indicated. Use finishing nails for finish work. Select fasteners of size that will not fully penetrate members where opposite side will be exposed to view or will receive finish materials. Make tight connections between members. Install fasteners without splitting wood; predrill as required. REVISED: 06/08/15 PAGE 10 FILE: CFRST-Rough Carpentry CFRST SPECMSTR-NEW BUILD 2015, Marriott International, Inc.

11 H. Use hot-dip galvanized or stainless-steel nails where rough carpentry is exposed to weather, in ground contact, or in area of high relative humidity. I. Countersink nail heads on exposed carpentry work and fill holes with wood filler WOOD GROUNDS, NAILERS, BLOCKING, AND SLEEPERS A. Install wood grounds, nailers, blocking, and sleepers where shown and where required for screeding or attaching other work. Form to shapes shown and cut as required for true line and level of attached work. Coordinate locations with other work involved. 1. Wood blocking or nailers used to attach roof edge system components shall be designed and installed to resist the design wind load and shall be firmly attached to the masonry structure to provide a continuous load path in accordance with SPRI Wind Design Standards. For wood nailers wider than 6-inches fasteners shall be staggered to avoid splitting the wood WOOD FURRING A. Install plumb and level with closure strips at edges and openings. Shim with wood as required for tolerance of finish work. 1. Firestop furred spaces of walls at each floor level and at ceiling with wood blocking or noncombustible materials, accurately fitted to close furred spaces. B. Furring to Receive Plywood Paneling: Install 1-by-3-inch nominal-size furring at 24 inches o.c., horizontally and vertically. Select furring with no knots capable of producing bent-over nails and damage to paneling. C. Furring to Receive Gypsum Board: Install 1-by-2-inch nominal-size furring at 16 inches o.c., vertically WOOD FRAMING, GENERAL A. Framing Standard: Comply with AFPA's "Manual for Wood Frame Construction," unless otherwise indicated. B. Framing with Engineered Wood Products: Install engineered wood products to comply with manufacturer's written instructions. C. Install framing members of size and at spacing indicated. D. Do not splice structural members between supports. E. Firestop concealed spaces of wood-framed walls and partitions at each floor level and at ceiling line of top story. Where firestopping is not inherent in framing system used, provide closely fitted wood blocks of 2-inch nominal-thickness lumber of same width as framing members. F. Comply with Table and Section 2304 of the International Building Code for minimum fastening requirements of wood members, and published requirements of metal fastener manufacturer, whichever is more stringent WALL AND PARTITION FRAMING A. General: Arrange studs so that wide face of stud is perpendicular to direction of wall or partition and narrow face is parallel. Provide single bottom plate and double top plates using members of 2-inch nominal thickness whose widths equal that of studs; except single top plate may be used for non-load-bearing partitions. Nail or anchor plates to supporting construction, unless otherwise indicated. PAGE 11

12 B. Construct corners and intersections with 3 or more studs. Provide miscellaneous blocking and framing as shown and as required to support facing materials, fixtures, specialty items, and trim. REVISED: 06/08/15 1. Provide continuous horizontal blocking at midheight of single-story partitions and multistory partitions, using members of 2-inch nominal thickness and of same width as wall or partitions. C. Frame openings with multiple studs and headers. Provide nailed header members of thickness equal to width of studs. Set headers on edge and support on jamb studs. 1. For non-load-bearing partitions, provide double-jamb studs with headers not less than 4- inch nominal depth for openings 36 inches and less in width, and not less than 6-inch nominal depth for wider openings. 2. For load-bearing walls, provide triple-jamb studs for openings 72 inches and less in width, and four-jamb studs for wider openings. Provide headers of depth shown or, if not shown, as recommended by AFPA's "Manual for Wood Frame Construction." D. Provide bracing in exterior walls as indicated on drawings. E. Provide bracing in interior walls as indicated on drawings FLOOR JOIST FRAMING A. General: Install floor joists with crown edge up and support ends of each member with not less than 1-1/2 inches of bearing on wood or metal, or 3 inches on masonry. Attach floor joists as follows: 1. Where supported on wood members, by toe nailing or by using metal framing anchors. 2. Where framed into wood supporting members, by using wood ledgers as shown or, if not shown, by using metal joist hangers. B. Fire Cuts: At joists built into masonry, bevel cut ends 3 inches and do not embed more than 4 inches. C. Frame openings with headers and trimmers supported by metal joist hangers; double headers and trimmers where span of header exceeds 48 inches. D. Do not notch in middle third of joists; limit notches to 1/6 depth of joist, 1/3 at ends. Do not bore holes larger than 1/3 depth of joist; do not locate closer than 2 inches from top or bottom. E. Provide solid blocking of 2-inch nominal thickness by depth of joist at ends of joists unless nailed to header or band. F. Lap members framing from opposite sides of beams, girders, or partitions not less than 4 inches or securely tie opposing members together. Provide solid blocking of 2-inch nominal thickness by depth of joist over supports. G. Anchor members paralleling masonry with 1/4-by-1-1/4-inch metal strap anchors spaced not more than 96 inches o.c. extending over and fastening to 3 joists. Embed anchors at least 4 inches into masonry with ends bent at right angles 4 inches into grouted masonry. H. Under jamb studs at openings, provide solid blocking between joist. I. Under non-load-bearing partitions, provide double joists separated by solid blocking equal to depth of studs above. 1. Provide triple joists separated as above, under partitions receiving ceramic tile and similar heavy finishes or fixtures. J. Provide bridging of type indicated below, at intervals of 96 inches o.c., between joists. PAGE 12 FILE: CFRST-Rough Carpentry CFRST SPECMSTR-NEW BUILD 2015, Marriott International, Inc.

13 1. Diagonal wood bridging formed from bevel cut 1-by-3-inch nominal-size lumber, doublecrossed and nailed both ends to joists. 2. Steel bridging installed to comply with bridging manufacturer's written instructions. 3. Bridging may be omitted where joist depth is 12-inch nominal size or less, and where indicated live load is 40 psf or less. K. Engineered Wood Beams 1. Comply with manufacturer s written instructions for design, installation, and fastening. 2. Design Loads: Beams shall be sized to support loads indicated on drawings. 3. Allowable deflection: a. Floor Beams: L360 live load deflection; L240 total load deflection. b. Roof Beams: L/180 total load deflection. 4. Protect wood members from direct contact with concrete or masonry. 5. Refer to manufacturers literature for connection of multiple plies of side loaded beams RAFTER AND CEILING JOIST FRAMING A. Ceiling Joists: Install ceiling joists with crown edge up and complying with requirements specified above for floor joists. Face nail to ends of parallel rafters. 1. Where ceiling joists are at right angles to rafters, provide additional short joists perpendicular to rafters from wall plate to first joist; nail to ends of rafters and to top plate and nail to first joist or anchor with framing anchors or metal straps. Provide 1-by-8-inch nominal-size or 2-by-4-inch nominal-size stringers spaced 48 inches o.c. crosswise over main ceiling joists. B. Rafters: Notch to fit exterior wall plates and toe nail or use metal framing anchors. Double rafters to form headers and trimmers at openings in roof framing, if any, and support with metal hangers. Where rafters abut at ridge, place directly opposite each other and nail to ridge member or use metal ridge hangers. 1. At valleys, provide double-valley rafters of size shown or, if not shown, of same thickness as regular rafters and 2 inches deeper. Bevel ends of jack rafters for full bearing against valley rafters. 2. At hips, provide hip rafter of size shown or, if not shown, of same thickness as regular rafters and 2 inches deeper. Bevel ends of jack rafters for full bearing against hip rafter. C. Provide collar beams (ties) as shown or, if not shown, provide 1-by-6-inch nominal-size boards between every third pair of rafters, but not more than 48 inches o.c. Locate below ridge member, at third point of rafter span. Cut ends to fit roof slope and nail to rafters. D. Provide special framing as shown for eaves, overhangs, dormers, and similar conditions, if any. E. Engineered Wood Beams 1. Comply with manufacturer s written instructions for design, installation, and fastening. 2. Design Loads: Beams shall be sized to support loads indicated on drawings. 3. Allowable deflection: a. Floor Beams: L360 live load deflection; L240 total load deflection. b. Roof Beams: L/180 total load deflection. PAGE 13

14 4. Protect wood members from direct contact with concrete or masonry. 5. Refer to manufacturers literature for connection of multiple plies of side loaded beams STAIR FRAMING A. Provide stair framing members of size, space, and configuration indicated or, if not otherwise indicated, to comply with the following requirements: 1. Stringer Size: 2-by-12-inch nominal-size minimum. 2. Notching: Notch stringers to receive treads, risers, and supports; leave at least 3-1/2 inches of effective depth. 3. Stringer Spacing: At least 3 stringers for each 36-inch clear width of stair. B. Provide stair framing that does not exceed the following variations between treads and risers within each flight: 1. Adjacent Treads and Risers: 3/16 inch. 2. Between Largest and Smallest Treads and Risers: 3/8 inch INSTALLATION OF STRUCTURAL-USE PANELS A. General: Comply with applicable recommendations contained in APA Form No. E30K, "APA Design/Construction Guide: Residential & Commercial," for types of structural-use panels and applications indicated. 1. Comply with "Code Plus" provisions of above-referenced guide. B. Securely attach to substrate by fastening as indicated, complying with the following: 1. ICC NER-272 for power-driven fasteners. 2. Table , "Fastening Schedule," in ICC's "International Building Code." C. Do not bridge building expansion joints; cut and space edges of panels to match spacing of structural support elements. D. Coordinate sheathing installation with installation of materials installed over sheathing so sheathing is not exposed to precipitation or left exposed at end of the workday when rain is forecast. E. Fastening Methods: Fasten panels as indicated below: 1. Combination Subflooring-Underlayment: Glue and screw to framing throughout. a. Subflooring: Glue and screw to framing throughout. 2. Sheathing: a. Nail to wood framing. b. Screw to cold-formed metal framing. c. Space panels 1/8 inch at edges and ends. 3. Underlayment: Glue and screw to framing throughout. a. Space panels 1/32 inch at edges and ends. b. Fill and sand edge joints of underlayment receiving resilient flooring just before installing flooring. 4. Plywood Backing Panels: Nail or screw to supports. REVISED: 06/08/15 PAGE 14 FILE: CFRST-Rough Carpentry CFRST SPECMSTR-NEW BUILD 2015, Marriott International, Inc.

15 5. Lay-out panels with face grain oriented perpendicular to the supporting members. 6. Install roof sheathing with panel cups at all edges GYPSUM SHEATHING A. General: Install gypsum sheathing to comply with manufacturer s instructions, GA-253, and the following: 1. Cut boards at penetrations, edge, and other obstructions of the work. Fit tightly against abutting construction, except provide a 3/8 setback where non-load-bearing construction abuts structural elements. 2. Coordinate sheathing installation with flashing and joint sealant installation so that these combined materials are installed in the sequence and manner that prevents exterior moisture from passing through completed exterior wall assembly. 3. Apply fasteners so that screw heads bear tightly against face of gypsum sheathing boards, but do not cut into face paper. 4. Do not bridge building expansion joints with gypsum sheathing. Cut and space edges to match spacing of structural support elements. B. Vertical Installation: Install four-foot-wide gypsum sheathing boards vertically with vertical edges centered over flanges of studs. Abut ends and edges of each board with those of adjoining boards. Screw-attach boards at perimeter and within field of board to each steel stud a follows: 3.11 PROTECTION 1. Fasteners spaced approximately 8 o.c. and set-back 3/8 minimum from edges and ends of boards. A. Protect wood that has been treated with inorganic boron from weather. If inorganic boron treated wood becomes wet, apply EPA registered borate treatment to wood surfaces in accordance with manufacturers recommendations. B. Protect Gypsum Sheathing from weather by covering exposed exterior surface, if required by manufacturer of gypsum sheathing. END OF SECTION PAGE 15