06_10_00_Rough_Carpentry.pdf

Fontana Unified School District

ROUGH CARPENTRY

Section 06 10 00

Revised: 01/07/2022 Page 1 of 8 Rough Carpentry Section 06 10 00

Part 1 GENERAL

1.01 WORK INCLUDED

A. Rough Carpentry Work.

B. Installation of glued laminate members, plywood web joists or wood chord metal web joist.

C. Related Sections:

1. Section 01 45 23: Testing and Inspecting Services.

2. Section 06 20 00: Finish Carpentry.

3. Section 09 29 00: Gypsum Board.

1.02 REFERENCES

A. Regulatory Requirements:

1. Work of this Section shall comply with Part 2, Volume 2, CBC

Chapter 23.

1.03 QUALITY ASSURANCE

A. Comply with the Following as a minimum requirement:

1. Redwood structural and framing lumber shall be graded in accordance with Standard Specifications for Grades of California Redwood Lumber or the Redwood Inspection Service.

2. Douglas Fir, larch or hemlock structural and framing lumber shall be graded in accordance with the Standard Grading Rules of the West Coast Lumber Inspection Bureau (WCLIB) or the Western Lumber Grading Rules of the Western Wood Products Association

(WWPA).

3. Plywood shall conform to requirements of Product Standard PS 1- 95, and shall be grade marked by a recognized grading agency (APA and PTL).

B. Lumber shall bear official grade mark of the association under whose rules it was graded or official frame mark of another recognized grading agency.

C. Structural and framing members 2 inches and thickness and larger shall be air-dried to a moisture content not to exceed 19 percent before installation.

D. Each piece of preservative treated shall be identified by the Quality Mark of an approved inspection agency in accordance with Part 2, Volume 2 CBC Chapter 2303.1.9; refer to Section 01 45 23: Testing and Inspecting Services.

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E. Lumber showing visible signs of mold growth:

1. Any lumber showing visible signs of mold growth shall be removed from the project site or cleaned as outline below.

2. The contractor is responsible for all costs associated with cleaning, post-cleaning testing, and reporting for the lumber with mold.

a. Lumber that shows visible signs of mold growth prior to, or after installation, shall be cleaned pursuant to USEPA’s guidance publication “Mold Remediate in Schools and Commercial Buildings” dated September 2008 (EPA 402-K- 01.001).

b. A minimum of 10% of the total locations cleaned must be sample (tape lift method) post cleaning to ensure cleaning effort was successful results evaluated by direct microscopic examination determine that the general abundance of mold is non-detect or rare (normal trapping to 1+).

c. A report by a Certified Industrial Hygienist (CIH) that details the sampling and cleaning results shall be prepared and submitted to the Owner Authorized Representative (OAR) for review and approval of FUSD.

d. Cleaned lumber shall not be installed or enclosed by finish materials until approval of test results. Cleaned lumber must meet moisture content requirements as required elsewhere in this specification prior to installation or application of finishes.

1.04 SUBMITTALS

A. Submit product data and current ICBO Evaluation Reports for framing anchors.

1.05 DELIVERY, STORAGE AND HANDLING

A. Do not deliver rough carpentry items until site conditions are adequate to receive the work. Protect items from weather while in transit.

B. Store lumber and plywood at the site under cover or otherwise protected against exposure to weather, raise above ground and out of contact with damp or wet surfaces. Stack lumber and plywood and provide for air circulation within and around stacks and under temporary covers. For pressure treated lumber and plywood, provide spacers between courses to permit air circulation.

1.06 PROJECT CONDITIONS

A. Cooperate with other trades in coordinating their work with the work of this section. Provide wood grounds, blocking and nailers where indicated or as required for work of other trades.

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1.07 STORAGE, HANDLING AND PROTECTON

A. The materials supplied as part of the Work of this section shall be protected from exposure to inclement weather before being covered by other Work.

Part 2 PRODUCTS

2.05 MATERIALS

A. Lumber: Structural and framing lumber shall be of the following species and grades:

INSTALLATION SPECIES GRADE

1. Subfloor, wall sheathing, roof sheathing and ceiling furring

Douglas fir and larch

Construction Board WCLB;

WWPA

2. Posts, (5” x 5” and larger, width not more than 2” greater than thickness.)

Douglas fir and larch

No. 1 Structural Posts and Timbers, WCLB. No. 1 Post and Timbers, WWPA

3. Beams, girders and truss members (5” and thicker, rectangular, width more than 2” greater than thickness) where exposed as finish members

Douglas fir and larch

Select Structural Beams and Stringers, WCLIB; WWPA

4. Items in subparagraph 3 when concealed. WCLIB No. 1 Beams and Stringers, WWPA

Douglas fir and larch

No. 1 Structural Beams and Stringers

5. Joist, rafters, lintels, posts, mullions and members (2’ to 4’ thick, 5” and wider), Douglas fir and larch

Construction Light Framing

WCLIB; WWPA

6. Other lumber (2” to 4” thick, 2” to 4” wide) not specified in subparagraph 5 above.

Douglas fir and larch

Construction Light Framing

WCLIB; WWPA

7. Framing lumber (2” to 4” thick, 5” wider).

Douglas fir and larch

No. 1 Structural Joists and Planks, WCLIB; WWPA

8. Mudsills and plates in contact with earth

Douglas fir and larch treated

Same as subparagraphs 6 and 7.

9. Sills or plates installed on concrete or masonry surfaces 6” or less above earth or finish grade.

Douglas fir and larch treated

Same as subparagraphs 6 and 7.

10. Sills, foundation plates & sleepers Installed on concrete, masonry foundations, or installed on concrete slab in direct contact with earth.

Douglas fir and larch treated.

Same as subparagraphs 6 and 7

11. Miscellaneous nailing strips and blocks embedded in concrete or masonry.

Douglas fir and larch treated

Same as subparagraphs 6 and 7

B. Plywood: Plywood furnished for structural purposes, when exposed outdoors, shall be exterior type plywood. Other plywood furnished for structural purposed shall be exterior type, or Exposure 1.

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C. OSB Board or Panels:

1. Oriented strand board or panels shall not be furnished a part of the Work of this section.

D. Preservative Treated Wood:

1. Wood and plywood specified: as treated wood shall be pressure treated wood in accordance with CBC requirements.

2. Seasoning: Treated lumber shall be air seasoned after treatment, for a minimum of 2 weeks before installation. Moisture content shall be 15 percent maximum.

3. Creosote or arsenic is not permitted for treating wood.

4. When treated wood member have been notched, dapped, drilled, or cut, such newly cut surfaces shall be painted with a heavy coat of the same preservative material originally provided for treatment of wood member.

E. Fire Retardant Protection: Wood and plywood specified as fire retardant protected wood shall be treated by approved methods and materials and shall be dried following treatment to maximum moisture content as follows:

1. Solid sawn lumber 2” in thickness or less: 19 percent.

2. Plywood: 15 percent.

F. Plywood Subflooring: Underlayment, Group 1 Exposure 1; of thickness indicated. Nominal thickness not less than ½ inch. Span rating of 32/16.

G. Mineral Fiber Panels: Asbestos-free, thickness as indicated.

H. Adhesive: Tec, Inc. Sturdi-Bond TA-0175, or Top Industrial Inc., Rainbuster

345, elastomeric adhesive conforming to ASTM D3498 and APA-AFG-01.

I. Fire retardant wood to comply with AWPA Standard C20 for lumber and

C27 for plywood.

J. Fire retardant chemicals to comply with FR-1 of AWPA Standard P-17 and shall be free of halogens, sulfates and ammonium phosphate.

K. Carbon steel, galvanized steel, aluminum, copper, and red brass in contact with fire retardant wood shall exhibit corrosion rates less than one mil per year when tested in accordance with FS Mil-L-19140, Paragraph 4.6.5.2.

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L. Fire retardant chemicals must be registered for use as a wood preservative by the U.S. Environmental Protection Agency.

PART 3 – EXECUTION

3.01 FASTENINGS

A. Nails, Spikes and Staples: Section 2304, CBC Galvanized for exterior applications, high humidity locations and treated wood; plain finish for other interior locations; size and type to suit application. Comply with Table 2304.10.1, CBC. Use common nails only.

B. Bolts, Nuts, Washers, Lags, Pins and Screws: Section 2304, CBC, sized to suit application, galvanized for exterior locations, high humidity locations and treated wood, plain finish for other interior locations. When lags bear on wood, they shall be fitted with a standard steel plate washer under head.

Lags in a wood member are to be screwed in and the hole is to be pre-drilled. Wood screws being installed per CBC are to have a pilot hole/pre-drill.

C. Fasteners: Expansion type or powder actuated type for anchorage to solid masonry or concrete. Refer to Section 01 40 00 for Quality Requirements.

D. Stock Framing Connectors: Section 2304, CBC types indicated on drawings, galvanized, with nails fully driven in all holes in each face of connector.

(1) Manufacturers:

a. Simpson Strong Tie Co., Inc., San Leandro, CA.

b. Harlen Metal Products, Compton, CA.

c. Silver Metal Products, Livermore, CA.

d. Teco Co., Germantown, MD.

e. K.C. Metals, Riverside, CA.

(2) Or equal as approved in accordance with Section 01 60 00 for Product Storage and Handling Requirements.

C. Non-Stock Framing Connectors: Conform to details.

D. Preservative (Pressure) Treated Lumber: Section 2303.1.9, CBC Conform to

AWPA manual of recommended practice. Use preservative complying with C-2 and C-9. Conform to AQMD, Local Regulations.

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(1) Douglas Fir Larch, used as required by Section 2303, CBC, shall conform to the following:

a. Lumber shall be WWPA or WCLIB grade stamped.

b. Lumber shall be No. 1 grade or better unless indicated otherwise on drawings.

E. Waterproof Membrane: ASTM D4601; 25 or 28 lb. asphalt saturated glass felt.

F. Fire-Retardant Lumber: Chemically treated and pressure impregnated, as defined in Section 2303.2 CBC. Lumber shall be grade stamped by an approved agency at the factory, and shall bear identification indicating the fire performance rating thereof

3.02 INSTALLATION

A. Framing, Furring, and Stripping

1. Erect wood framing, furring, stripping and nailing members true to lines and levels. Do not deviate from true alignment more than 1/4 inch in 10 feet, non-cumulative.

2. Construct members of continuous pieces of longest possible lengths.

3. Construct and erect required headers and lintels.

4. Double wall framing members at openings over 100 square inches.

Space the short members above and below openings in same manner as for walls.

5. Provide double joist headers at joist ends and around openings unless otherwise indicated on drawings. Bridge joists and rafters to conform to Section 2308.4 CBC and as noted on plans. For pre-manufactured joists, provide bridging in accordance with manufacturer’s recommendations.

6. Construct walls with studs of size and spacing indicated. Install single sill member at bottom and double plate at top. Stagger upper and lower members of double plate with joints not less that 4 feet o.c. or as indicated on drawings. Where sill or any wood member contacts concrete or masonry, install pressure treated lumber.

7. Provide one row of solid blocking not less than 2 inch nominal thickness and same width of stud at ceiling and floor lines and at spacing not to exceed 8 feet on center vertically. Fit snugly and attach with not less than two 16d nails.

8. Install 3 studs at corners.

9. Conform to Section 2306, CBC, where pipes penetrate sills or plates.

10. Cutting and Notching: Conform to Section 2308.5.9, CBC.

11. Bored Holes: Conform to Section 2308.5.10, CBC.

12. Conform to Section 706, California Building Code for fire blocks and draft stops.

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13. Firestop all concealed spaces of stud walls, ceilings and floor levels at 10 foot intervals both vertically and horizontally.

14. Firestop all concealed vertical and horizontal spaces as occur at soffits, vents, stair stringers, pipes and similar openings in compliance with Section 718, CBC.

15. Firestopping shall consist of closely fitted blocking of 2 inch in thickness same width as framing members.

B. PLYWOOD SHEATHING

1. Thickness as indicated on the drawings.

2. Boundary Nailing: Not less than 3/8 inch from edge, spaced not more than 6 inches on center, unless noted otherwise on drawings.

3. Blocking: Panel edges shall bear on framing members or solid blocking.

4. Minimum Size Vertical Panel: 12 inches wide.

5. Minimum Size Horizontal Panel: 24 inches wide.

6. Install plywood backboards for telephone, data and other electrical equipment. Size of backboards to be 12 inches beyond size of electrical panel boards.

C. FOUNDATION FRAMING, PLATES, SILLS AND SLEEPERS

1. Preservative treated wood required.

2. Under-Floor Clearance for Joist: 18 inches minimum.

3. Under-Floor Clearance for Girders: 12 inches minimum.

4. End Clearance for Lumber Entering Concrete: 1/2 inch minimum.

5. Build into masonry during installation of masonry work. Where possible anchor to formwork before concrete placement.

D. HORIZONTAL FRAMING

1. Bearing: 1-1/2 inch minimum on wood or metal, 3 inches on masonry. Lay framing members with crown up. Members with knots at bottom not permitted.

2. Lateral Support: Use solid blocking, cross bridging or other approved means.

3. Lap joists a minimum of 3 inches when framed from opposite sides of a beam. Do not run joists continuous beyond one span unless indicated otherwise on drawings.

4. Openings: Double joists required for trimmer and headers for openings 4 ft. or larger unless indicated otherwise on drawings.

5. Provide ties, purlins and blocking in conformance with Section

2308.7, CBC.

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D. BACKING

1. Provide backing as indicated on drawings or per manufactures recommendation to support electrical fixtures, fixed equipment, cabinets, grab bars, door stops and plates and all other locations of wall mounted items. Fasten securely to framing.

3.07 CLEAN UP

A. Remove rubbish, debris and waste materials and legally dispose of off the Project site.

3.08 PROTECTION

A. Protect the Work of this section until Substantial Completion.

3.09 TOLERANCES

A. Framing Members: ¼ inch maximum from true position.

B. Surface Flatness of Floor: ¼ inch in 10 feet maximum.

END OF SECTION