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SECTION 09 21 16
GYPSUM BOARD ASSEMBLIES
 
 
Copyright 2011 - 2016 ARCAT, Inc. - All rights reserved
** NOTE TO SPECIFIER ** ClarkDietrich Building Systems; non-load-bearing metal studs, runner track, and other components for partitions, shaftwall, stairwalls, and area separation walls.
This section is based on the products of ClarkDietrich Building Systems, which is located at:
9050 Centre Pointe Dr. Suite 400
West Chester, OH 45069
Toll Free Tel: 800-543-7140
Tel: 513-870-1100
Fax: 513-870-1300
Email: request info (info@clarkdietrich.com)
Web: www.clarkdietrich.com
[ Click Here ] for additional information.
ClarkDietrich Building Systems is the leading manufacturer of cold-formed steel framing and finishing products for commercial and residential construction. ClarkDietrich Building Systems has been growing to meet the continued needs of our customers and we bring with us a long and respected history in the steel framing industry. ClarkDietrich provides a wide selection of cold-formed steel framing and finishing products including drywall and structural framing, clips and connectors, floor joists, metal lath, fire-rated assemblies, shaftwall framing products, numerous deflection systems and an extensive line of metal, vinyl, veneer, paper-faced, plaster and stucco beads and trims. ClarkDietrich companies and divisions include ClarkDietrich Engineering Services [CDES], ClarkDietrich ClipExpress and Vinyl Corp. ClarkDietrich Building Systems operates manufacturing and service locations throughout North America.
ClarkDietrich also provides total cold-formed steel design services. ClarkDietrich Engineering Services [CDES] is a full-service engineering consulting firm specializing in cold-formed steel. CDES offers services including sealed shop drawings and calculations for curtainwall (non-bearing) and full load-bearing designs; Building Information Modeling (BIM) Services; preliminary sizing; pre-bid engineering pricing; and technical assistance and LEED compliance with ClarkDietrich's products. CDES is the largest group of design engineers devoted solely to cold-formed steel framing design and is licensed in 49 states and now operates in four locations: McDonough, GA; Bristol, CT; Crown Point, IN; and Carlsbad, CA.
ClarkDietrich Building Systems has grown to what we are today so that we can be closer to our customers while offering them the quality products and service they have come to expect from us over the years. ClarkDietrich works to bring its years of experience in the industry to our customers through knowledgeable sales people and a management team committed to the success of our customers. We recognize that our reputation rests upon quality products competitively delivered when they are needed. What's inside those walls not only counts, it is what we build our reputation on. But, this is only the beginning; we will continue to work to be our customers' preferred supplier by adding additional products so that we can be the industry's first choice from framing to finishing, coast to coast.
Try our new SubmittalPro: Gathering the information you need for your technical submittal has never been easier. You can quickly view information about any of our products as individual PDFs, or you can select all the products you need and create the final submittal as a single PDF. You don't even need to login.
 
PART 1 GENERAL
 
1.1
SECTION INCLUDES
A.
Gypsum board and accessories.
B.
Non-structural metal studs for wall assemblies.
1.2
RELATED SECTIONS
 
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
A.
Section 05 40 00 - Cold-Formed Metal Framing.
B.
Section 06 10 00 - Rough Carpentry.
C.
Section 09 22 16 - Non-Structural Metal Framing.
1.3
REFERENCES
 
** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
A.
ASTM International (ASTM):
1.
ASTM A 653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.
2.
ASTM A 780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings.
3.
ASTM B 633 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel.
4.
ASTM C 475 - Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board.
5.
STM C 578 - Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation.
6.
ASTM C 645 - Standard Specification for Nonstructural Steel Framing Members.
7.
ASTM C 665 - Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing.
8.
ASTM C 754 - Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products.
9.
ASTM C 834 - Standard Specification for Latex Sealants.
10.
ASTM C 840 - Standard Specification for Application and Finishing of Gypsum Board.
11.
ASTM C 844 - Standard Specification for Application of Gypsum Base to receive Gypsum Veneer Plaster.
12.
ASTM C 847 - Standard Specification for Metal Lath.
13.
ASTM C 919 - Standard Practice for Use of Sealants in Acoustical Applications.
14.
ASTM C 1002 - Standard Specification for Steel Self Piercing Tapping Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs.
15.
ASTM C 1047 - Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base.
16.
ASTM C 1063 - Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster (Plaster and Stucco Accessories).
17.
ASTM C 1177 - Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing.
18.
ASTM C 1178 - Standard Specification for Glass Mat Water Resistant Gypsum Backing Panel.
19.
ASTM C 1278 - Standard Specification for Fiber Reinforced Gypsum Panel.
20.
ASTM C 1396 - Standard Specification for Gypsum Board.
21.
ASTM C 1513 - Standard Specification for Steel Tapping Screws for Cold-Formed Steel Framing Connections.
22.
ASTM E 90 - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements.
23.
ASTM E 119 - Standard Test Methods for Fire Tests of Building Construction and Materials.
24.
ASTM E 413 - Classification for Rating Sound Insulation.
B.
AISI North American Specification for the Design of Cold-Formed Steel Structural Members.
C.
AISI - Standard for Cold-Formed Steel Framing General Provisions.
D.
Gypsum Association (GA):
1.
GA-214 - Recommended Levels of Gypsum Board Finish.
2.
GA-216 - Application and Finishing of Gypsum Panel Products.
3.
GA-238 - Guidelines for the Prevention of Mold Growth on Gypsum Board; Gypsum Association.
E.
Underwriters Laboratory (UL) - Fire Resistance Directory; Underwriters Laboratories Inc.; current edition.
1.4
SUBMITTALS
A.
Submit under provisions of Section 01 30 00 - Administrative Requirements.
B.
Submit manufacturer's certification of product compliance with codes and standards along with product literature and data sheets for specified products. Electronic submittals generated via ClarkDietrich website and submitted electronically are acceptable.
C.
Evaluation Reports: Submit evaluation reports certified under an independent third party inspection program administered by an agency accredited by IAS to ICC-ES AC98, IAS Accreditation Criteria for Inspection Agencies.
D.
Sustainable Design Submittals:
1.
LEED v4 Submittals:
a.
MR Credit: Building Product Disclosure and Optimization - Environmental Product Declarations: Provide Type III EPDs from manufacturers that have third-party verified environmental impact data. Excludes products fabricated from rigid PVC or CPVC plastic.
b.
MR Credit: Building Product Disclosure and Optimization - Sourcing of Raw Materials: Provide recycled content of products showing the percentage of postconsumer and/or preconsumer recycled content by weight and its associated cost. Excludes products fabricated from rigid PVC or CPVC plastic.
c.
MR Credit: Building Product Disclosure and Optimization - Material Ingredients: Provide Health Product Declarations (HPDs) from manufacturers with full disclosure of known hazards in compliance with the Health Product Declaration Open Standard. Excludes products fabricated from rigid PVC or CPVC plastic.
d.
MR Credit: Construction and Demolition Waste Management: Include a statement indicating percentage of materials diverted from disposal in landfills and incinerators, and where recyclable resources are directed back to the manufacturing process.
1.5
QUALITY ASSURANCE
A.
Installer Qualifications: Installer experienced in performing work of this section who has specialized in installation of work similar to that required for this project.
B.
Pre-installation Meetings: Conduct pre-installation meeting to verify project requirements, substrate conditions, and manufacturer's installation instructions.
C.
Fire-Test-Response Characteristics: For fire-resistance-rated assemblies that incorporate non-structural steel framing, provide materials and construction identical to those tested in assembly indicated according to ASTM E 119 by, and displaying a classification label, from an independent testing agency acceptable to authority having jurisdiction. Products used in the assembly shall carry a classification label from a testing laboratory acceptable to authority having jurisdiction.
1.
Construct fire-resistance-rated partitions in compliance with tested assembly requirements indicated on the Drawings.
2.
Rated assemblies to be substantiated from applicable testing using the proposed products, by Contractor.
 
** NOTE TO SPECIFIER ** Retain paragraph below where framing is part of STC-rated assemblies. Indicate design designations of specific assemblies on Drawings.
 
D.
STC-Rated Assemblies: For STC-rated assemblies, provide materials and construction identical to those tested in assembly indicated according to ASTM E 90 and classified according to ASTM E 413 by an independent testing agency.
 
** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
 
E.
Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
1.
Finish areas designated by Architect.
2.
Do not proceed with remaining work until workmanship, color, and sheen are approved by Architect.
3.
Refinish mock-up area as required to produce acceptable work.
1.6
DELIVERY, STORAGE, AND HANDLING
A.
Protect and store products in manufacturer's unopened packaging until ready for installation per requirements of AISI's "Code of Standard Practice".
B.
Deliver and store gypsum board in accordance with GA-238.
1.7
PROJECT CONDITIONS
A.
Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended ASTM C 840 and by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
PART 2 PRODUCTS
 
2.1
MANUFACTURERS
A.
Acceptable Manufacturer, Metal Framing: ClarkDietrich Building Systems, 9100 Centre Pointe Dr. Suite 210, West Chester, OH 45069. Tel: (513) 870-1100. Fax: (513) 870-1300. E-mail: info@clarkdietrich.com Web: www.clarkdietrich.com.
1.
ClarkDietrich Building Systems; 4601 North Point Boulevard, Baltimore, MD 21219 (410) 477-4000.
2.
ClarkDietrich Building Systems; 4200 Cedar Blvd., Baytown, TX 77520 (281) 383-1617.
3.
ClarkDietrich Building Systems; 780 James P. Casey Road, Bristol, CT 06010. Tel: (866) 921-0023.
4.
ClarkDietrich Building Systems; 6510 General Drive, Riverside, CA 92509. Tel: (951) 360-3500.
5.
ClarkDietrich Building Systems; 1685 Tide Court, Woodland, CA 95776. Tel: (530) 668-1987.
6.
ClarkDietrich Building Systems; 501 Steward Road, Suite 100, Rochelle, IL 61068. Tel: (800) 659-0745.
7.
ClarkDietrich Building Systems; 91-300 Hanua Street, Kapolei, HI 96707. Tel: (808) 682-5747.
8.
ClarkDietrich Building Systems; 330 Greenwood Place, McDonough, GA 30253. Tel: (678) 304-5500.
9.
ClarkDietrich Building Systems; 10340 Denton Drive, Dallas, TX 75220. Tel: (214) 350-1716.
10.
ClarkDietrich Building Systems; 38020 Pulp Drive, Dade City, FL 33523. Tel: (352) 518-4400.
11.
ClarkDietrich Building Systems; 1985 N. River Road NE, Warren, OH 44483. Tel: (330) 372-5564.
12.
ClarkDietrich Building Systems; 1455 Ridge Road, Vienna, OH 44473. Tel: (330) 372-4014.
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
B.
Substitutions: Not permitted.
C.
Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.
2.2
METAL FRAMING COMPONENTS
 
** NOTE TO SPECIFIER ** Review ClarkDietrich Building Systems Full Line Catalog and Technical Design Guide. Lateral and axial load carrying applications, including fixtures, cabinetry and other equipment in interior uses, are design dependent, and all designs should be reviewed by a competent design professional familiar with the system and the requirements of the specific project. Custom sizes and lengths are available along with the standard sizes and lengths. Maximum product length is limited only by practical handling limitations. Revise recycled content number if applicable after consultation with manufacturer.
 
A.
Recycled Content of Steel Products: Post-consumer recycled content plus one-half of pre-consumer recycled content not less than 25 percent.
B.
Framing Members, General: Comply with ASTM C 645 for conditions indicated.
1.
Steel Sheet Components: Comply with ASTM C 645 requirements for metal unless otherwise indicated.
2.
Protective Coating: Comply with ASTM C 645; ASTM A 653/A 653M G40 (Z120), Coating with equivalent corrosion resistance of ASTM A 653/A 653M, G40 (Z120) or DiamondPlus coating; roll-formed from steel meeting mechanical and chemical requirements of ASTM A 1003 with a zinc-based coating. A40 galvannealed products are not acceptable.
a.
Coatings shall demonstrate equivalent corrosion resistance with an evaluation report acceptable to the authority having jurisdiction.
C.
Steel Studs and Runners: ASTM C 645.
1.
Non-Structural Studs: Cold-formed galvanized steel C-studs, ClarkDietrich ProSTUD drywall studs as per ASTM C 645 for conditions indicated below:
a.
Flange Size: 1-1/4 inch (32 mm).
 
**NOTE TO SPECIFIER** Delete depths not required.
 
b.
Web Depth: As specified on Drawings.
c.
Web Depth: 1-5/8 inches (41 mm).
d.
Web Depth: 2-1/2 inches (64 mm).
e.
Web Depth: 3-5/8 inches (92 mm).
f.
Web Depth: 4 inches (102 mm).
g.
Web Depth: 6 inches (152 mm).
 
**NOTE TO SPECIFIER** Delete description not required.
 
h.
Member Description: ProSTUD 25 (25ga equivalent drywall stud) 50 ksi. Minimum Base-Steel Thickness: 0.0150 inches (0.3810 mm).
i.
Member Description: ProSTUD 20 (20ga equivalent drywall stud) 65 ksi. Minimum Base-Steel Thickness: 0.0190 inches (0.4826 mm).
 
** NOTE TO SPECIFIER ** For additional ProSTUD(R) thicknesses to meet nonstandard specifications see: www.clarkdietrich.com
 
2.
Non-Structural Track: Cold-formed galvanized steel runner tracks, ClarkDietrich ProTRAK drywall tack, in conformance with ASTM C 645 for conditions indicated below:
a.
Flange Size: 1-1/4 inch (32 mm).
b.
Web Depth: Track web to match stud web size.
c.
Minimum Base-Steel Thickness: Track thickness to match wall stud thickness or as per design.
3.
"EQ" (Equivalent Gauge Thickness) Steel Studs and Runners: Members that can show certified third party testing with gypsum board in accordance with ICC ES AC86 - 2010 (Approved May 2012) need not meet the minimum thickness limitation or minimum section properties set forth in ASTM C 645. The submission of an evaluation report is acceptable to show conformance to this requirement.
4.
Steel Framing Stud and Track Wall System: Self-locking metal studs, and telescoping stud extensions and tracks.
a.
TRAKLOC Steel Framing System by ClarkDietrich Building Systems.
1)
TRAKLOC Fixed Length Stud (TLF).
2)
TRAKLOC Adjustable Stud (TLA).
3)
TRAKLOC Elevator Stud (TLE).
4)
TRAKLOC Track (TTS).
b.
Minimum Base-Steel Thickness: 0.0179 inch (0.45 mm).
c.
Minimum Base-Steel Thickness: 0.0238 inch (0.60 mm).
d.
Minimum Base-Steel Thickness: 0.0296 inch (0.75 mm).
e.
Minimum Base-Steel Thickness: 0.0329 inch (0.84 mm).
f.
Web Depth: 2-1/2 inches (64 mm).
g.
Web Depth: 3-5/8 inches (92 mm).
h.
Web Depth: 4 inches (102 mm).
i.
Web Depth: 6 inches (152 mm).
5.
Steel Framing Stud and Deflection Track Wall System: Self-locking metal studs with telescoping stud extension with knockout in each flange to allow for 1 inch (25 mm) of deflection for fire-rated head-of-wall deflection system.
a.
TRAKLOC Stud Deflection Assembly.
1)
TRAKLOC (TLD).
b.
Minimum Base-Steel Thickness: 0.0179 inch (0.45 mm).
c.
Minimum Base-Steel Thickness: 0.0238 inch (0.60 mm).
d.
Minimum Base-Steel Thickness: 0.0296 inch (0.75 mm).
e.
Minimum Base-Steel Thickness: 0.0329 inch (0.84 mm).
f.
Web Depth: 2-1/2 inches (64 mm).
g.
Web Depth: 3-5/8 inches (92 mm).
h.
Web Depth: 4 inches (102 mm).
i.
Web Depth: 6 inches (152 mm).
 
** NOTE TO SPECIFIER ** ClarkDietrich MaxTrak(R) Provides a positive attachment for overall strength and allows for vertical movement caused by normal head-of-wall and floor extension or compression. Select the designation and criteria information based upon the shape and size component required for the project. If more than one, identify the application or location where used or verify the designation and size is indicated on the drawings.
 
D.
Slotted Deflection Track: ClarkDietrich Building Systems MaxTrak or BlazeFrame; cold-formed galvanized steel in conformance with AISI's Specifications for Design of Cold-Formed Steel Members.
1.
Designation and size as indicated on the drawings.
 
**NOTE TO SPECIFIER** Delete thickness not required.
 
2.
Minimum Base-Steel Thickness: 20 gauge, 0.0329 inches (0.84 mm).
3.
Minimum Base-Steel Thickness: 18 gauge, 0.0428 inches (1.09 mm).
4.
Minimum Base-Steel Thickness: 16 gauge, 0.0538 inches (1.37 mm).
5.
Minimum Base-Steel Thickness: 14 gauge, 0.0677 inches (1.72 mm).
6.
Standard leg 2-1/2 inches (64 mm).
7.
Standard Vertical Slot of 1-1/2 inches (38 mm) in leg.
8.
Minimum yield strength of 50 ksi in 16 gauge (1.37 mm) and heavier and minimum yield strength of 33 ksi in 18 gauge (1.09 mm) and lighter.
a.
Furring Channel: Cold-formed galvanized steel in conformance with AISI's North American Specifications for Design of Cold-Formed Steel Structural Members; ClarkDietrich furring channel:
 
** NOTE TO SPECIFIER ** Select the designation and criteria information based upon the shape and size component required for the project. If more than one, identify the application or location where used or verify the designation is indicated on the drawings.
 
9.
Designation and size as indicated on the drawings.
10.
Designation: 25 gauge, 0.0179 inches (0.45 mm) thick, 7/8 inches (22 mm) height, 2-23/32 inches (69 mm) width.
11.
Designation: 20 gauge, 0.0296 inches (0.75 mm) sheet thickness, 7/8 inches (22 mm) height, 2-23/32 inches (69 mm) width.
12.
Designation: 25 gauge, 0.0179 inches (0.45 mm) sheet thickness, 1-1/2 inches (38 mm) height, 2-11/16 inches (68 mm) width.
13.
Designation: 20 gauge, 0.0296 inches (0.75 mm) sheet thickness, 1-1/2 inches (38 mm) height, 2-11/16 inches (68 mm) width.
E.
U Channel: Cold-formed galvanized steel; ClarkDietrich Building Systems U-Channel:
 
** NOTE TO SPECIFIER ** Select the designation and criteria information based upon the shape and size component required for the project. If more than one, identify the application or location where used or verify the designation is indicated on the drawings.
 
1.
Designation and size as indicated on the drawings.
2.
Designation: galvanized, 16 gauge, 0.0538 inches (1.37 mm) steel thickness, 3/4 inches (19.1 mm) size.
3.
Designation: galvanized, 16 gauge, 0.0538 inches (1.37 mm) steel thickness, 1 1/2 inches (38 mm) size.
4.
Designation: galvanized, 16 gauge, 0.0538 inches (1.37 mm) steel thickness, 2 inches (51 mm) size.
 
** NOTE TO SPECIFIER ** H Studs and Track are used in the construction of area separation walls.
 
F.
H Studs and C-Runner: Cold-formed galvanized steel, approved for the use intended; ClarkDietrich Building Systems H studs and C-Runner:
 
**NOTE TO SPECIFIER** Select the designation and criteria information based upon the shape and size component required for the project. If more than one, identify the application or location where used or verify the designation is indicated on the drawings.
 
1.
Designation and size as indicated on the drawings.
2.
Designation: Unhemmed H stud; 2 inches (51 mm), 10-foot (3 m) length, 25 gauge, 0.0179 inches (0.45 mm).
3.
Deflection Limitation at 10-foot (3000 mm): L/240.
 
** NOTE TO SPECIFIER ** CT Shaftwall Studs and J-Tabbed Track are used in the construction of shaftwalls and stairwalls. Select the designation and criteria information based upon the shape and size component required for the project. If more than one, identify the application or location where used or verify the designation is indicated on the drawings.
 
G.
CT Shaftwall Studs and J-Tabbed Track: Cold-formed galvanized steel, approved for the use intended based on a current Evaluation Report; ClarkDietrich Building Systems CT Shaftwall Studs and J-Tabbed Track.
 
** NOTE TO SPECIFIER ** Select the designation and criteria information based upon the shape and size component required for the project. If more than one, identify the application or location where used or verify the designation is indicated on the drawings.
 
1.
Designation and size as indicated on the drawings.
2.
Designation: CT Shaftwall Stud with J-Tabbed Track, 2-1/4 inches (57 mm) leg.
3.
Designation: CT Shaftwall Stud with J-Tabbed Track, 3 inches (76 mm) leg.
 
** NOTE TO SPECIFIER ** Delete size not required.
 
4.
Size: 2-1/2 inches (64 mm).
5.
Size: 4 inches (102 mm).
6.
Size: 6 inches (152 mm).
 
** NOTE TO SPECIFIER ** Delete thickness not required.
 
7.
Sheet Thickness: 25 gauge.
8.
Sheet Thickness: 20 gauge.
9.
Sheet Thickness: 18 gauge.
 
** NOTE TO SPECIFIER ** Delete deflection limitation not required.
 
10.
Deflection Limitation: L/120.
11.
Deflection Limitation: L/180.
12.
Deflection Limitation: L/240.
13.
Deflection Limitation: L/360.
H.
Metal Trims: Cold-formed galvanized steel.
 
** NOTE TO SPECIFIER ** Select the designation and criteria information based upon the shape and size component required for the project. If more than one, identify the application or location where used or verify the designation is indicated on the drawings.
 
1.
Type and Size as indicated on the drawings.
2.
Type: J Trim.
a.
Designation: M400, 3/8 inches (9.5 mm) size, 1-1/4 inches (32 mm) leg.
b.
Designation: M401, 1/2 inches (12.7 mm) size, 1-1/4 inches (32 mm) leg.
c.
Designation: M402, 5/8 inches (15.9 mm) size, 1-1/4 inches (32 mm) leg.
3.
Type: U Trim.
a.
Designation: 200A, 1/2 inches (12.7 mm) size, 1-1/4 inch (32 mm) leg.
b.
Designation: 200A, 5/8 inches (15.9 mm) size, 1-1/4 inch (32 mm) leg.
4.
Type: L Trim.
a.
Designation: 200B, 1/2 inches (12.7 mm) size, 1-1/4 inch (32 mm) leg.
b.
Designation: 200B, 5/8 inches (15.9 mm) size, 1-1/4 inch (32 mm) leg.
I.
Drywall Corner Bead: Cold-formed galvanized steel sheet.
1.
Type: 103 Deluxe.
2.
Flange Length: 1-1/4 inches (32 mm).
J.
Flat Strap and Backing Plate: Sheet for blocking and bracing in length and width indicated.
1.
Galvanized Sheet Steel:
 
** NOTE TO SPECIFIER ** Delete thickness not required.
 
a.
Minimum Base-Steel Thickness: As indicated on Drawings.
b.
Minimum Base-Steel Thickness: 0.0179 inch (0.45 mm).
c.
Minimum Base-Steel Thickness: 0.0296 inch (0.75 mm).
2.
Subject to compliance with requirements, provide ClarkDietrich Building Systems; Backing Plate.
a.
Backing Plate: Proprietary fire-retardant-treated wood blocking and bracing in width indicated.
 
** NOTE TO SPECIFIER ** Delete option if not required.
 
1)
ClarkDietrich Building Systems Danback Fire-Retardant Treated Wood Backing Plate D16F.
2)
ClarkDietrich Building Systems Danback Fire-Retardant Treated Wood Backing Plate D24F.
K.
Channel Bridging and Bracing: Pre-notched steel bar, 7/8 inch by 7/8 inch by 50 inches (22.2 mm by 22.2 mm by 1270 mm), 0.0329-inch (0.84-mm) minimum base-steel thickness.
1.
Subject to compliance with requirements, provide ClarkDietrich Building Systems; Spazzer 9200 Bridging and Spacing Bar.
L.
Channel Bridging: 0.0538 inch (1.37 mm) base-steel thickness, with minimum 1/2-inch-(12.7 mm) wide flanges.
1.
Subject to compliance with requirements, provide ClarkDietrich Building Systems; Cold-Formed U-Channel.
 
** NOTE TO SPECIFIER ** Delete depth not required.
 
a.
Depth: As indicated on Drawings.
b.
Depth: 3/4 inch (19.1 mm).
c.
Depth: 1-1/2 inches (38.1 mm).
d.
Depth: 2 inches (50.8 mm).
e.
Clip Angle: Subject to compliance with requirements, provide ClarkDietrich Building Systems EasyClip U-Series Clip Angle or not less than 1-1/2 by 1-1/2 inches (38.1 by 38.1 mm), 0.0538 inch (1.37 mm) thick, galvanized steel.
 
** NOTE TO SPECIFIER ** Delete clip angle not required.
 
1)
Clip Angle: U543.
2)
Clip Angle: U545.
3)
Clip Angle: U547.
M.
Resilient Furring Channels: 1/2-inch (12.7 mm) deep, steel sheet members designed to reduce sound transmissions:
1.
Provide ClarkDietrich Building Systems; RC Deluxe (RCSD) Resilient Channel.
N.
Radius Framing: Steel sheet runner for non-load-bearing curves, bends, variable radii and arches using expandable ribbon technology.
1.
Provide ClarkDietrich Building Systems; Contour Track.
2.
Minimum Base-Steel Thickness: As indicated on Drawings.
 
** NOTE TO SPECIFIER ** Delete thickness not required.
 
3.
Minimum Base-Steel Thickness: 0.0179 inch (0.45 mm).
4.
Minimum Base-Steel Thickness: 0.0259 inch (0.66 mm).
 
** NOTE TO SPECIFIER ** Delete size not required.
 
5.
Size: 2-1/2 inches.
6.
Size: 3-5/8 inches.
7.
Size: 6 inches.
8.
Size: As indicated on Drawings.
O.
Framing Component Accessories: Provide the following accessories as required for a complete system.
1.
EasyClip Clip Angle.
2.
Angles.
3.
Backing Strip.
P.
Drywall Penetration Barrier Mesh: Supply and install Barrier Mesh steel expanded metal panels as a penetration barrier behind gypsum wallboard walls and/or ceilings, where noted on the drawings.
1.
Barrier Mesh supplied by ClarkDietrich Building Systems.
 
** NOTE TO SPECIFIER ** Delete size not required.
 
a.
BM75-9F Maximum Security.
b.
BM50-13F Maximum Security.
c.
BM15-9F Medium Security.
d.
BM75-13F Medium Security.
e.
BM10-16F Minimum Security.
2.
Barrier Mesh Clips: Barrier Mesh shall be attached to framing members using ClarkDietrich Barrier Mesh Clips and the appropriate threaded fasteners.
Q.
Fasteners: Self-drilling, self-tapping screws; steel, complying with ASTM C 1513; galvanized coating, plated or oil-phosphate coated complying with ASTM B 633 as needed for required corrosion resistance.
 
** NOTE TO SPECIFIER ** Include the following paragraph if welded connections are specified.
 
R.
Touch-Up Paint: Complying with ASTM A 780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings. Zinc rich, containing 95-percent metallic zinc.
S.
Non-Hardening, Flexible Sealant: Latex acrylic.
T.
Framing: Framing components may be preassembled into panels prior to erecting.
1.
Fabricate panels square, with components attached in a manner so as to prevent racking or distortion.
2.
Cut all framing components squarely for attachment to perpendicular members, or as required for an angular fit against abutting members. Hold members positively in place until properly fastened.
3.
Fasteners: Fasten components using self-tapping screws or welding.
2.3
GYPSUM BOARD AND ACCESSORlES
A.
Gypsum Wallboard: ASTM C 1396, of types, edge configuration and thickness indicated below; in maximum lengths available to minimize end-to-end butt joints.
1.
Type: Regular, unless otherwise indicated. Type X for fire-resistant rated assemblies and where indicated. Sag-resistant type for ceiling surfaces.
2.
Edges: Tapered.
3.
Thickness: 5/8 inch (16 mm), unless otherwise indicated.
B.
Gypsum Backing Board for Multi-Layer Applications: ASTM C 1396 or, where backing board is not available from manufacturer, gypsum wallboard, ASTM C 1396, of type, edge configuration and thickness indicated below, in maximum lengths available to minimize end-to-end joints.
1.
Type: Regular, unless otherwise indicated. Type X for fire-resistant rated assemblies and where indicated. Sag-resistant type for ceiling surfaces.
2.
Edges: Square, non-tapered, or V-tongue and groove.
3.
Thickness: 5/8 inch (16 mm), unless otherwise indicated.
C.
Abuse-Resistant Gypsum Wallboard: ASTM C 1278 and ASTM C 1396, of types, edge configuration and thickness indicated below without paper facing and with fiber mesh reinforced backing; in maximum lengths available to minimize end-to-end butt joints.
1.
ype: Regular, unless otherwise indicated.
2.
Thickness: 5/8 inch (16 mm), unless otherwise indicated.
3.
Manufacturer: USG "Fiberock VHI Abuse-Resistant Gypsum Fiber Interior Panels."
D.
Mold and Mildew Resistant Gypsum Board: ASTM C 1396, of type and thickness indicated below to resist mold and mildew; in maximum lengths available to minimize end-to-end butt joints. Board shall score minimum 10 when tested per ASTM D 3273.
1.
Type and Thickness: Regular, 1/2 inch (12 mm) thick, unless otherwise indicated. Type X, 5/8 inch thick, for fire-resistant rated assemblies and where indicated.
2.
Manufacturer: G-P Gypsum Corporation "DensArmor Plus" / "DensArmor Plus Fireguard" or LaFarge "Drywall with Mold Defense."
E.
Mold and Mildew Resistant Backing Board: ASTM C 1177/ASTM C 1396, of type and thickness indicated below with glass mat facing embedded on both sides to resist mold and mildew; in maximum lengths available to minimize end-to-end butt joints.
1.
Type and Thickness: Regular, 1/2 inch (12 mm) thick, unless otherwise indicated. Type X, 5/8 inch thick, for fire-resistant rated assemblies and where indicated.
2.
Manufacturer: G-P Gypsum Corporation "DensArmor Plus."
F.
Water-Resistant Backing Board: ASTM C 1396, with tapered edges and of type and thickness indicated below; in maximum lengths available to minimize end-to-end butt joints.
1.
Types: Regular, unless otherwise indicated. Type X for fire-resistant rated assemblies and where indicated.
2.
Thickness: 5/8 inch (16 mm), unless otherwise indicated.
G.
Water-Resistant Backing Board: ASTM C 1178, of type and thickness indicated below with glass mat facing on both sides and acrylic coating on one side; in maximum lengths available to minimize end-to-end butt joints.
1.
Type and Thickness: Regular, 1/2-inch thick, unless otherwise indicated. Type X, 5/8 inch (16 mm) thick, for fire-resistant rated assemblies and where indicated.
2.
Manufacturer: G-P Gypsum Corporation "Dens-Shield Tile Guard."
H.
Gypsum Base for Veneer Plaster: ASTM C 844, with blue absorptive face paper designed for rapid trowel application of veneer plaster, of types, edge configuration and thickness indicated below; in maximum lengths available to minimize end-to-end butt joints.
1.
Types: Regular, unless otherwise indicated. Type X for fire-resistant rated assemblies and where indicated. Foil backed where indicated.
2.
Edges: Tapered.
3.
Thickness: 5/8 inch (16 mm), unless otherwise indicated.
I.
Gypsum Shaftliner Board, Type X: ASTM C 1396 manufacturer's proprietary fire-resistive liner panels with paper faces.
J.
Gypsum Shaftliner Board, Moisture- and Mold-Resistant Type X: ASTM C 1396, manufacturer's proprietary fire-resistive liner panels with moisture- and mold-resistant core and surfaces.
K.
Exterior Soffit Board: ASTM C 1396, with manufacturer's standard edges, of type and thickness indicated.
1.
Types: Regular unless otherwise indicated. Type X for fire-resistant rated assemblies and where indicated.
2.
Thickness: 5/8 inch (16 mm), unless otherwise indicated.
L.
Lead-lined Gypsum Board: ASTM C 1396, lead lined, with 2 inch (50 mm) wide strips for lapping at joints. Lead thickness as indicated on drawings.
M.
Partitions Closures: Provide extruded aluminum adjustable partition closures at all junctures of partitions with other construction as indicated. Adjustable partition closures shall be spring-loaded assemblies filled with acoustical batt insulation and with finish to match curtain wall system.
1.
Manufacturer: Gordon Inc., "Mullion Mate."
N.
Partition End Caps: Provide extruded aluminum partition end caps at all partition termination end. Provide at locations of all adjustable partition closures and other locations indicated. Finish to match curtain wall system.
1.
Manufacturer: Gordon Inc., "Series 910 Special Shapes."
O.
Preformed Niches: Provide preformed recessed wall niches, ready to receive tile finish. Provide at showers and other locations indicated.
1.
Manufacturer: Noble Company "Pro Form."
P.
Trim Accessories: Provide manufacturer's standard plastic or metal trim accessories for gypsum board work, per ASTM C 1047. Provide with either knurled or perforated expanded flanges for nailing or stapling, and beaded for concealment of flanges, in joint compound. Provide corner beads, L-type edge trim-beads, U-type edge trim-beads, special L-kerf-type edge trim-beads, and one-piece control joint beads.
1.
Subject to compliance with requirements, provide drywall trims and accessories by Vinyl Corp.; a division of ClarkDietrich Building Systems or equivalent.
Q.
Interior Trim Accessories: Provide corner beads, L-type edge trim-beads, U-type edge trim-beads, special L-kerf-type edge trim-beads, and one-piece control joint beads complying with the following requirements:
1.
Materials: Formed plastic or metal complying with one the following requirements:
a.
Sheet Steel zinc coated by the hot-dip process.
b.
Sheet Steel zinc coated by the hot-dip process or electrolytic process, or sheet steel coated with aluminum.
c.
Rigid PVC or CPVC plastic.
2.
Subject to compliance with requirements, provide drywall trims and accessories by Vinyl Corp.; a division of ClarkDietrich Building Systems.
R.
Accessories for Curved Surfaces: Cornerbead formed of metal, plastic, or metal combined with plastic, with either notched or flexible flanges that are bendable to curved radius.
1.
Subject to compliance with requirements, provide Vinyl Corp.; Archmaker Corner Bead.
S.
Exterior Surface Trim and Accessories: Cornerbead, edge trim, control joints formed from sheet steel zinc coated by the hot dip process per ASTM C 1047, or plastic conforming to ASTM C 1047 Section 4.3 plastic for accessories shall be manufactured from rigid PVC or ABS Plastic not less than 0.028 inch (0.7112 mm) and Section 4.3.1 PVC specification D 3678 Class II or III, in shapes indicated below by reference to ASTM C1047.
1.
Cornerbead on outside corners, unless otherwise indicated.
2.
Edge trim complying with shape LC-bead.
3.
One piece control joint formed with V-shaped slot and removable strip covering slot opening.
4.
Manufacturer: Vinyl Corp.; a division of ClarkDietrich Building Systems.
T.
Soffit Vents: Prefabricated extruded aluminum, with clear anodized finish or vinyl soffit vent.
1.
Manufacturer: Vinyl Corp "No. CSJ50-200V"
U.
Laminating Adhesive: Special adhesive or joint compound specifically recommended for laminating gypsum boards.
V.
Spot Grout: ASTM C 475, setting-type joint compound for type recommended for spot grouting hollow metal door frames.
W.
Gypsum Board Screws: ASTM C 1513. Fastening gypsum board to steel members less than 0.033 inch thick. Fastening gypsum board to gypsum board.
X.
Steel Drill Screws: ASTM C 1513, for fastening gypsum board to steel members.
Y.
Sound Attenuation Blankets: ASTM C 665, Type I (blankets without membrane facing), unfaced mineral fiber blanket insulation in thicknesses shown. Fibers manufactured from glass, slag wool, or rock wool.
Z.
Thermal Insulation: Thickness and width to fill voids formed by Z-furring members. Unfaced mineral fiber blanket insulation, ASTM C 665, Type I (blankets without membrane facing), in thicknesses shown or extruded polystyrene, ASTM C 578, Type IV, rigid, cellular, polystyrene thermal insulation formed from polystyrene resin using an extrusion process.
AA.
Isolation Strip at Exterior Walls: Asphalt-saturated organic felt, ASTM D 226, Type I (No. 15 asphalt felt), non-perforated or adhesive backed, closed cell vinyl foam strips that allow fastener penetration without foam displacement, in width to suit steel stud size.
2.4
JOINT TREATMENT AND ACCESSORlES
A.
Joint Treatment Materials: ASTM C 475; type recommended by manufacturer of sheet products and joint treatment materials for application indicated, unless indicated otherwise.
B.
Joint Tape:
1.
Interior Gypsum Board: Paper reinforcing tape.
2.
Exterior Gypsum Board: Paper reinforcing tape.
3.
Mold and Mildew Resistant Backer Board: Glass mesh tape.
4.
Gypsum Base for Veneer Plaster: Paper reinforcing tape.
C.
Setting Type Joint Compound: Factory prepackaged, job mixed chemical-hardening powder products for bedding and filling, formulated for uses indicated.
 
** NOTE TO SPECIFIER ** Delete options if not required.
 
1.
For taping and filling only.
2.
For prefilling gypsum board joints.
3.
For filling joints and treating fasteners of water-resistant gypsum backing board behind base for ceramic tile.
4.
For filling joints and treating fasteners of mold and mildew resistant backing board behind base for ceramic tile.
5.
For filling joints and treating fasteners of gypsum base for veneer plaster.
6.
For topping compound, use sandable formulation.
D.
Drying-Type Joint Compounds: Factory prepackaged vinyl-based products complying with the following requirements for formulation and intended use.
1.
Ready-Mix Formulation: Factory-mixed product.
2.
All-purpose compound formulated for use as both taping and topping compound; use for finish (third) coat only.
E.
Exterior Joint Compound: Special chemical-hardening-type for exterior application.
F.
Acoustical Sealant for Exposed and Concealed Joints: Manufacturer's standard non-sag, paintable, nonstaining latex sealant complying with ASTM C 834 and the following requirements.
PART 3 EXECUTION
 
3.1
EXAMINATION
A.
Prior to installation, inspect previous work of all other trades. Verify that all work is complete and accurate to the point where this installation may properly proceed in strict accordance with framing shop drawings.
B.
If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
3.2
METAL FRAMING INSTALLATION
A.
Install cold-formed framing in accordance with requirements of ASTM C 754.
 
** NOTE TO SPECIFIER ** Delete references to welding connections when framing components are lighter than 16 gauge.
 
B.
Framing Installation:
1.
Erect framing and panels plumb, level and square in strict accordance with approved drawings.
2.
Handle and lift prefabricated panels in a manner to not cause distortion in any member.
3.
Anchor runner track securely to the supporting structure. Install concrete anchors only after full compressive strength has been achieved.
4.
Butt all track joints. Securely anchor abutting pieces of track to a common structural element, or splice them together.
5.
Align and plumb studs, and securely attach to the flanges or webs of both upper and lower tracks.
6.
Attach wall stud bridging when required in a manner to prevent stud rotation. Space bridging rows according to manufacturer's recommendations.
7.
Provided temporary bracing until erection is completed.
8.
Where indicated in the drawings, provide for structural vertical movement using means in accordance with manufacturer's recommendations.
 
** NOTE TO SPECIFIER ** Provide the following for shaft wall construction.
 
C.
Shaftwall Framing Installation:
1.
Lay out as shown in construction drawings. Secure J-Tabbed Track at perimeter framing and plumb to ceiling, floor and sides. Attach with suitable fasteners, spaced not more than 24 inches (610 mm) o.c. Apply a bead of non-hardening, flexible sealant to the perimeter.
2.
Preplan the stud layout 24 inches (610 mm) o.c. and adjust the spacing at either end so the end studs will not fall closer than 12 inches (305 mm) from the end.
3.
Erect the first 1-inch (25.4 mm) shaft wall liner panel, cut 3/4 inch (19 mm) less than the total height of the framed section. Plumb the panel against the web of the J-Tabbed Track and bend out tabs in J-Tabbed Track to secure panels in place. If tabs are not used, screw the liner panel to the J-Tabbed Track.
4.
Insert CT Shaftwall Stud, cut 3/4 inch (19 mm) less than the overall height, into the top and bottom J-Tabbed Tracks and fit tightly over the previously installed 1 inch (25.4 mm) panel. Allow equal clearance between top and bottom J-Tabbed Track.
5.
Install the next 1-inch (25.4 mm) shaft wall liner panel inside the J-Tabbed Tracks and within the tabs of the CT Shaftwall stud.
6.
Progressively install succeeding studs and panels as described above until the wall section is enclosed. The final panel section may be secured with tabs from the J-Tabbed Track at 12 inches (305 mm) o.c.
7.
Where wall heights exceed the standard or available length of shaft wall liner panels, the gypsum panels may be cut and stacked with joints occurring within the top or bottom third points of the wall. Joints of adjacent panels should be alternately staggered to prevent a continuous horizontal joint. Any butt joints must be factory edge to factory edge with pieces pushed tightly together. Gypsum panels must engage a minimum of 2 tabs of the CT Shaftwall Stud.
8.
CT Shaftwall Studs cannot be spliced. They must be installed full height, one piece. J-Tabbed Track when not attached of the structure shall not be spliced.
9.
Do not attach J-Tabbed Track to the CT Shaftwall Studs.
10.
For doors, ducts or other large penetrations or openings, install J-Tabbed Track as perimeter framing. Use 20 gauge, 0.0329 inches (0.83 mm) track with a 3 inches (76 mm) back leg for elevator doors and block cavity with 12 inches (305 mm) wide gypsum filler strips for doors exceeding 7-foot (2 m) height.
D.
Drywall Penetration Barrier Mesh Installation:
1.
Barrier Mesh sheets may be installed with diamond running in direction most suitable.
2.
BM-Clips shall be installed to secure the mesh to the framing members.
3.
Mesh joints occurring on framing members may either join staggered or butt together.
4.
It is acceptable to overlap mesh joints to achieve tie-in.
5.
BM sheets shall join, begin and terminate on a framing member.
6.
BM sheets not joining on framing member shall be wire tied with 18GA steel tie wire.
7.
Wire tying shall be no less frequent than the installation of Mesh Clips.
3.3
GYPSUM BOARD INSTALLATION
A.
Gypsum Board:
1.
Gypsum Board Application and Finishing Standards: Comply with ASTM C 840 and GA-216.
2.
Locate exposed end-butt joints as far from center of walls and ceilings as possible, and stagger not less than 24 inches (610 mm) in alternate courses of board.
3.
Install ceiling boards across framing in the manner which minimizes the number of end-butt joints, and which will avoid end joints in the central area of each ceiling. Stagger end joints a minimum of 24 inches (610 mm).
4.
Install wall and partition boards vertically unless otherwise noted.
5.
Install exposed gypsum board with face side out. Do not install imperfect, damaged, or damp boards. Butt boards together for a light contact at edges and ends with not more than 1/16 inch (1.5 mm) open space between boards.
6.
Locate either edge or end joints over supports, except in horizontal applications or where intermediate supports or gypsum board back-blocking is provided behind end joints. Position boards so that like edges abut, tapered edges against tapered edges, and mill-cut or field-cut ends against mill-cut or field-cut ends. Do not place tapered edges against cut edges or ends. Stagger vertical joints over different studs on opposite sides of partitions.
7.
Attach gypsum board to steel studs so that leading edge or end of each board is attached to open (unsupported) edge of stud flange first.
8.
Attach gypsum board to supplementary framing and blocking provided for additional support at openings and cut-outs.
9.
Form control joints and expansion joints at locations indicated on Drawings, and as recommended by Gypsum Association, with space between edges of boards prepared to receive trim accessories.
10.
Cover both faces of steel stud partition framing with gypsum board in concealed spaces except in chase walls that are properly braced internally.
11.
Fit gypsum board around ducts, pipes, and conduits.
12.
Where partitions intersect open concrete coffers, cut gypsum board to fit profile of coffers and allow 1/4 to 1/2 inch (6 mm to 13 mm) wide joint for sealant.
13.
Isolate perimeter of non-load bearing drywall partitions at structural abutments. Provide 1/4 to 1/2 inch (6 mm to 13 mm) space and trim edge with "U" bead edge trim. Seal joints with acoustical sealant. See also 07910.
14.
Where sound-rated drywall construction is indicated on Drawings, seal construction at perimeters, control and expansion joints, openings, and penetrations with a continuous bead of acoustical sealant including a bead at both faces of partitions. Comply with ASTM C 919 and manufacturer's recommendations for location of edge trim, and close off sound-flanking paths around or through construction, including sealing of partitions above acoustical ceilings.
15.
Space fasteners in gypsum boards per referenced gypsum board application and finishing standard and manufacturer's recommendations.
B.
Accessories:
1.
Where feasible, use the same fasteners to anchor trim accessory flanges as required to fasten gypsum board to the supports. Otherwise, fasten flanges to comply with manufacturer's recommendations.
2.
Install metal corner beads at external corners.
3.
Install metal edge trim whenever edge of gypsum board would otherwise be exposed or semi-exposed, except where plastic trim is indicated on Drawings. Provide type with face flange to receive joint compound except where "U" bead (semi-finishing type) is indicated.
4.
Install gypsum board reveals where indicated on Drawings.
5.
Install control joints at locations indicated on Drawings, or if not indicated, at spacing and locations required by referenced gypsum board application and finish standard, and approved by Architect for visual effect.
C.
Maximum Variation of Finished Gypsum Board Surface from True Flatness: 1/8 inch (1.5 mm) in 10 feet (3048 mm) in any direction.
D.
Joint Treatment: Comply with ASTM C 840, GA 214 and GA 216.
1.
Level 1: Plenums, service corridors; above ceilings.
2.
Level 2: Areas of water resistant gypsum backing board under tile; exposed areas where appearance is not critical.
3.
Level 3: Areas to receive heavy or medium textured coatings; heavy-grade wall coverings.
4.
Level 4: Areas to receive flat sheen paint finish; light textured coatings; lightweight wall coverings.
5.
Level 5: Areas to receive gloss, semi-gloss sheen paints; critical lighting conditions.
3.4
PROTECTION
A.
Protect installed products until completion of project.
B.
Touch-up, repair or replace damaged products before Substantial Completion.
END OF SECTION