Steel Stud / Resilient Drywall Systems (10/88). CSI 3-Part Specifications.

SECTION 09263 - USG STEEL STUD/RESILIENT DRYWALL SYSTEMS(10/88)

This section is a proprietary guide specification for high

performance sound control and fire rated partition systems from

United States Gypsum Company. These systems utilize the unique

sound-dampening properties of USG's RC-1 Resilient Channel, along

with USG metal studs, SHEETROCK gypsum panels, and THERMAFIBER

insulation. Test results show these partition systems to be highly

effective in isolating unwanted sound, including low frequency noise.

For additional information, refer to United States Gypsum Company

Product Folder No. SA-921 or contact a USG representative.

This section conforms to the general style and format of MASTERSPEC

Specifications, a product of the American Institute of Architects.

While conforming to the general style and format of MASTERSPEC,

United States Gypsum Company is solely responsible for the quality

and accuracy of the technical content of these suggested guide

specifications. Specifiers must review manufacturer's current

product data, determine the suitability of proposed products and

systems to project conditions, and edit guide specifications to

suit project requirements.

Neither the American Institute of Architects nor the American

Institute of Architects Foundation endorses or recommends use of

this product. It is not the practice of the Institute to test,

review, or endorse any manufacturer's product or to determine the

accuracy of technical claims.

PRODUCT MASTERSPEC

USG STEEL STUD/RESILIENT DRYWALL SYSTEMS09263 - #SECTION 09263 - USG STEEL STUD/RESILIENT DRYWALL SYSTEMS

PART 1 - GENERAL

RELATED DOCUMENTS

Drawings and general provisions of Contract, including General and

Supplementary Conditions and Division 1 Specification Sections, apply

to this Section.

SUMMARY

This section includes high-performance sound attenuation and fire

resistive partition systems with resilient channels.

IF PARTITIONS ARE NOT FIRE-RESISTANCE RATED,

DELETE "AND FIRE RESISTIVE" FROM PARAGRAPH

ABOVE AND DELETE PARAGRAPH BELOW.

PENETRATIONS THROUGH SOUND WALLS SHOULD BE

AVOIDED WHENEVER POSSIBLE. IF PENETRATIONS

ARE NOT ACCEPTABLE, DELETE PARAGRAPH BELOW

AND RETAIN ARTICLE - "PROJECT CONDITIONS".

FOR ADDITIONAL INFORMATION, SEE USG PRODUCT

LITERATURE FOR THERMAFIBER FIRE-SAFING

INSULATION AND SMOKE-STOP SYSTEMS.

Fire stop insulation and sealants, required at penetrations through

fire resistive partitions, are specified in Division 7 Section

"Firestopping".

IF PROJECT INCLUDES OTHER TYPES OF DRYWALL

CONSTRUCTION, IT WILL TYPICALLY BE

ACCEPTABLE TO USE SAME TRIM AND JOINT

TREATMENT FOR SOUND WALLS. SEE USG PRODUCT

LITERATURE FOR COMPATIBLE PRODUCTS FROM

UNITED STATES GYPSUM COMPANY.

Drywall trim and joint treatment and other types of drywall wall

systems are specified in Division 9 Section "Gypsum Drywall."

DESIGN ADJACENT CONSTRUCTION TO PREVENT

SOUND TRANSMISSION THROUGH FLANKING PATHWAYS

OR STRUCTURAL TRANSMISSION.

Preparation of adjacent construction to receive sound wall systems

and maintain continuity of sound attenuation is specified in other

sections.

SYSTEM DESCRIPTION

MODIFY BELOW EXAMPLE TO PROVIDE PERFORMANCE

LEVELS REQUIRED BY PROJECT. SEE CURRENT USG

PRODUCT LITERATURE FOR AVAILABLE RATINGS AND

SYSTEMS.

Construct partition in accordance with require-ments of tested and

approved designs to obtain the follow-ing:

Sound Rating: STC/MTC not less than 65/61; Riverbanks Acoustical

Laboratories Test No. TL-87-143.

Fire-Resistance Rating: 3 hour minimum, ASTM E 119, UL Design

No. U455.

OMIT BELOW DESCRIPTION IF PARTITION IS

ADEQUATELY DETAILED ON DRAWINGS. SEE

DRAWING COORDINATION SHEETS. EDIT CAREFULLY

TO AVOID CONFLICTING PERFORMANCE AND

DESCRIPTIVE REQUIREMENTS.

Description: Construct partition as follows:

Wall Thickness: 9-1/2 inches.

Studs: 6 inches deep.

Resilient Channels: 1/2 inch deep, on one side of studs.

Sealant: Applied to face of studs, between layers of gypsum

wall board, and around panel perimeter.

Wall Panels: 3 layers 1/2 inch thick on each side of

partition.

Insulation: 5 inches thick.

DEFINITIONS

STC/MTC: STC and MTC are ratings of a partition's sound attenuation

performance. Partitions shall be tested by an independent acoustical

laboratory in accordance with ASTM E 90 - Laboratory Measurement of

Sound Transmission Loss of Building Partitions. STC shall be

determined in accordance with ASTM E 413 - Determination of Sound

Transmission Class. MTC shall be determined in accordance with

criteria published by United States Gypsum Company and shall describe

partition's attenuation of low-frequency noise from music, machinery,

or mechanical equipment.

SUBMITTALS

Product Data: Submit manufacturer's data for each type of product

and system specified, including details of construction, dimensions

of components, materials, profiles, finishes and installation

instructions.

Acoustical Test Report: Submit copy of test report from an

independent laboratory indicating that wall system complies with

required acoustical ratings.

DELETE BELOW IF FIRE-RESISTANCE RATING IS

NOT REQUIRED.

Fire Test Report: Submit copy of test report from an independent

laboratory indicating that wall system complies with required fire

ratings.

QUALITY ASSURANCE

DELETE BELOW IF NOT REQUIRED.

Installer Qualifications: Engage an Installer to perform work of

this section who has successfully completed acoustically rated work

similar in character to that indicated for Project.

Single Source Responsibility: All components of wall systems shall

be as manufactured or as directed by a single manufacturer.

DELETE BELOW IF WORK OF THIS SEC-TION IS NOT

EXTENSIVE OR COMPLEX ENOUGH TO JUSTIFY

EXPENSE OF CONFERENCE.

Pre-Installation Conference: Conduct conference at Project site in

accordance with requirements of Division 1 Section "Project

Meetings".

Attendance: Meeting shall be attended by Contractor, installer,

manufacturer's technical representative, and other sub-

contractors, suppliers, and fabricators who are effected by the

work of this Section. Notify Owner, Architect/ Engineer, and

Acoustical Consultant one week prior to scheduled meeting date.

Purpose: Coordinate work effecting installation, appearance, and

performance of sound wall systems. Discuss requirements for

maintaining acoustical and fire resistive performance through

adjacent flanking construction and at intersections and

penetrations of wall systems with other work.

DELIVERY, STORAGE, AND HANDLING

Deliver materials in their original, unopened packages. Store in an

enclosed shelter providing protection from damage and exposure to

elements. Protect joint compound from freezing. Remove damaged or

deteriorated materials from the site.

PROJECT CONDITIONS

OMIT BELOW IF JOINT FINISHING IS SPECIFIED

IN ANOTHER SECTION.

Cold Weather: During and after drywall joint finishing, maintain

temperature within building above 55 deg F (13 deg C) and provide

adequate ventilation to carry out excess moisture.

Penetrations: Do not permit openings in or penetrations of sound

walls except as shown on Drawings or accepted in writing by

Architect/Engineer.

PART 2 - PRODUCTS

MANUFACTURER

REFER TO USG SYSTEMS FOLDER SA-921 FOR

DESCRIPTION OF STEEL STUD/RESILIENT DRYWALL

SYSTEMS.

Subject to compliance with requirements, provide USG Steel

Stud/Resilient Drywall Systems manufactured by United States Gypsum

Company (USG).

MATERIALS

Framing:ASTM A 446 steel, hot dipped galvanized to ASTM A 525 G60.

Steel Studs: USG SJ studs, "C" - shaped studs with stiffened

flanges, size and gage indicated on the drawings for each

partition design.

Resilient Channels: USG RC-1 Resilient Channels, 1/2 inch deep

x 25 gage. Channel shall be type used in sound attenuation and

fire resistance tests and shall employ the decoupling principal

of sound attenuation. Web shall be slotted to create a resilient,

spring-like mounting flange with pre-punched screw holes. Face

flange shall be knurled to reduce "screw-walking".

Steel Runner Tracks: USG CR Runners, same size as studs x 20

gage.

IN SOME INSTANCES WHERE LOWER FIRE

RESISTANCE IS ACCEPTABLE, SHEETROCK BRAND

FIRECODE CAN BE SPECIFIED INSTEAD OF

SHEETROCK BRAND FIRECODE "C". CONTACT USG

FOR ADDITIONAL INFORMATION.

Gypsum Panels: USG SHEETROCK FIRECODE "C" in thick-nesses indicated

on the drawings.

Provide water resistant USG SHEETROCK BRAND W/R FIRECODE "C"

gypsum panels for face layer at bathtubs, showers, laundries, and

other high moisture areas.

Sound Insulation: THERMAFIBER Sound Attenuation Fire Blankets

(SAFB); unfaced, semi-rigid spun mineral fiber mat, 2.5 pcf minimum

density, 2000 deg F meltpoint; 24 x 48 inches, provide total

thickness indicated with no layer being less than 2 inches thick;

ASTM C 665, Type 1.

Screws: USG Drywall Screws, self-drilling and self-tapping, bugle

head unless otherwise required. Provide Type S screws, ASTM C 1002,

for steel up to and including 20-gage; provide Type S-12 screws, ASTM

C 954, for steel over 20-gage.

Acoustical Sealant: USG Acoustical Sealant. Sealant shall be type

used in sound attenuation and fire resistance tests and shall remain

resilient for life of installation.

Trim and Joint Treatment: Provide following:

Corner Bead: USG DUR-A-BEAD No. 103 galvanized steel corner

reinforce-ment.

Metal Trim: USG Metal Trim No. 200-A or 400 Series, galvanized

steel.

Control Joint: USG Control Joint No. 093, roll-formed zinc.

Staples: 9/16 inch galvanized staples.

Joint Compound: USG Ready-Mixed PLUS 3 Total Joint Compound or

USG Ready-Mixed Joint Compound-Taping and USG Ready-Mixed Joint

Compound-Topping.

OMIT BELOW IF CERAMIC TILE IS NOT

APPLICABLE.

At walls with ceramic tile finishes, use DURABOND 45 or 90

joint compound.

Reinforcing Tape: USG PERF-A-TAPE reinforcing tape.

IF TRIM AND JOINT TREATMENT ARE SPECIFIED

IN DIVISION 9 SECTION "GYPSUM DRYWALL", OMIT

ABOVE AND RETAIN BELOW.

Trim and Joint Treatment: Specified in Division 9 Section "Gypsum

Drywall".

PART 3 - EXECUTION

GENERAL

Comply with manufacturer's printed installation instructions for

products and application indicated, except when more stringent

requirements apply.

Conform to construction requirements of tested assemblies used to

demonstrate required sound attenuation and fire resistance.

INSPECTION

Inspect adjacent construction to which walls will attach for

conditions which could contribute to loss of sound attenuation.

Notify Architect/Engineer and correct conditions before proceeding.

INSTALLATION

Runners: Lay out walls according to drawings. Securely attach

runners to floor and structure above with suitable fasteners located

2 inches from each end and spaced 24 inches o.c. maximum.

Studs: Position studs vertically, engaging top and bottom runners,

and spaced 24 inches o.c. maximum. Place studs with their open sides

facing in same direction and with their narrow flanges on the side

of partition to receive the resilient channels.

EDIT BELOW TO SUIT PROJECT REQUIREMENTS.

Resilient Channels: Locate resilient channels on side of partition

indicated on drawings. Install horizontally, with mounting flange

down, and located 1-1/2 inches above floor, within 6 inches of

structure above, and 24 inches o.c. maximum. Attach to studs with

3/8 inch pan head screws driven through pre-punched screw holes.

Splice resilient channels directly over a framing member and screw

through both flanges.

Gypsum Panels, Direct to Stud Side: Apply gypsum panels vertically.

Leave approximately 1/4 inch gap at floor, structure above and

adjacent construction. Position panel edges over studs and stagger

joints in adjacent layers. Screw into studs 24 inches o.c. for base

layers and 12 inches o.c. for top layer. Screws shall penetrate

studs a minimum of 3/8 inch.

RETAIN BELOW IF SOUND RATED DESIGN REQUIRES

DAMPING.

Damping: Install acoustical sealant damping to direct-to-stud side.

Apply 3/8 inch bead of acoustical sealant to face of studs and

runner tracks before applying gypsum panels.

Apply dabs of acoustical sealant 8 inches o.c. between layers of

gypsum panels.

Do not allow acoustical sealant to remain exposed to air for more

than 15 minutes before panel is applied.

Press gypsum panels firmly into acoustical sealant. Hit with short

2 x 4 blocking and hammer or use other suitable method to spread

acoustical sealant to an approximate thickness of 1/32 inch before

drying.

Sound Insulation: Friction fit insulation blankets between studs.

Press blankets into firm contact with the direct applied gypsum

panels. Blankets shall not contact resilient channels. Butt blanket

ends and fill all voids.

Gypsum Panels, Resilient Channel Side: Apply gypsum panels

vertically. Use 3/8 inch shims on the floor to support panel until

all screws into the resilient channels are in place. Remove shims

to load resilient channels after all layers are installed. The

resilient channels should deflect when loaded, leaving a gap of

approximately 1/4 inch between the panels and the floor. The panels

should be sized to leave approximately 1/4 inch gap between panel and

the surrounding structure.

Screw into resilient channels 24 inches o.c. for base layers and 12

inches o.c. for finish layer. Screws must not come in contact with

studs. Do not install screws closer than 3 inches to the centerline

of a stud. Screws shall penetrate resilient channels a minimum of

3/8 inch.

EDIT BELOW IF PENETRATIONS ARE NOT PERMITTED

OR IF FIRESTOPPING OF PENETRATIONS IS

SPECIFIED IN ANOTHER SECTION.

Acoustical Sealant: Completely seal around perimeter of and

penetrations through sound walls, including: intersections with

walls, columns, and other adjacent construction; fill depth of gaps

around gypsum panels at floor, structure above, door frames, and

other openings; and at cutouts for electrical boxes, pipes and

plumbing, and other penetrations. Cut panels accurately to fit

penetrations.

Wall Hung Units: On resilient channel side of partition, secure

cabinets and other wall hung units to resilient channels; do not

install directly to studs. Provide additional channels as detailed.

Trim and Joint Treatment: Install following:

Screws: Locate screws 3/8 inch minimum from panel edges and power

drive to form a 1/32 inch deep dimple in panel surface.

Corner Bead: Reinforce outside corners with corner bead. Attach

with screws, staples, or clinch-on tool at 9 inches o.c. along

each flange.

Metal Trim: Install at face panel edges terminating at adjacent

construction. Attach with screws or staples at 9 inches o.c.

Control Joints: Do not run panels continuously through control

joints; provide 1/2 inch maximum break in panels and install

double framing with vertical runner angles at joints in panels.

Apply a bead of acoustical sealant between panels in joints, then

attach control joint to face panels with staples at 6 inches o.c.

along each flange. Install at following locations:

EDIT BELOW TO SUIT PROJECT REQUIREMENTS.

Walls of dissimilar construction meet and remain in the same

plane.

Expansion or control joints occur in building structure.

Wall runs exceed 30 feet.

Other locations as shown on drawings.

Joint System: Finish face panel joints and inside corners with

joint compound and reinforcing tape according to manufacturer's

instructions. Spot finish exposed fasteners and finish corner

bead, metal trim, and control joints with two coats of joint

compound feathered out and sanded smooth. Finish joints and

fasteners with minimum of three coats of joint compound to provide

surface suitably treated for finishes specified in other sections.

OMIT BELOW IF TILE IS NOT APPLICABLE.

In areas to be tiled, treat fastener heads with type of

compound specified for tile finish. Fill tapered edges in

gypsum panel with compound, embed reinforcement firmly and wipe

off excess compound. Follow immediately with a second coat

over the taping coat, being careful not to crown the joint.

Fold and embed tape properly in all interior angles to --provide

a true angle.

Prior to tile erection, seal cut panel edges of all openings

around pipes, fittings, and fixtures with thinned tile

adhesive.

IF TRIM AND JOINT TREATMENT ARE SPECIFIED

IN DIVISION 9 SECTION "GYPSUM DRYWALL", OMIT

ABOVE AND RETAIN BELOW.

Trim and Joint Treatment: Installation of trim and finishing of

joints and fasteners are specified elsewhere in Division 9.

END OF SECTION 09263

PRODUCT MASTERSPEC - EVALUATIONS

USG STEEL STUD/RESILIENT DRYWALL SYSTEMS09263 - E#SECTION 09263 - USG STEEL STUD/RESILIENT DRYWALL SYSTEMS

EVALUATION SHEETS

USG TECHNICAL SERVICES DEPARTMENT:

Eastern Construction Products Region

P.O. Box 16511, Atlanta, GA 30321

1000 Abernathy Road N.E., Suite 500, Atlanta, GA 30328-5603

(404) 393-0770

Northeast Office

555 White Plains Road, Tarrytown, NY 10591-5155

(914) 332-0800

Central Construction Products Region

1 South Wacker Drive, Suite 2000, Chicago, IL 60680-4616

P.O. Box 806278, Chicago, IL 60680-4124

(312) 606-4128

Western Construction Products Region

P.O. Box 2452, Los Angeles, CA 90054

620 North Brand Boulevard, Glendale, CA 91203-1212

(818) 956-1882

Architectural & Construction Services Department

101 South Wacker Drive, Chicago, IL 60606-4385

(312) 606-3739

USG PRODUCT LITERATURE:

Product literature is available from United States Gypsum Company

Representatives; contact USG for current information.

System Folder SA-921, USG Steel Stud/Resilient Drywall Systems,

Sweet's General Building and Renovation File 09250/USGF.

Gypsum Construction Handbook, 3rd edition.

Computer Diskettes, with USG guide specifications.

REFERENCED STANDARDS:

Standards referenced in the text of this section are listed below

according to source, designation, and title. Revision of standards

occur periodically and may happen before this section is updated in

the future. Refer to Division 1 section "Definitions and Standards"

for addresses and telephone numbers.

American Society for Testing and Materials (ASTM):

A 446Specification for Steel Sheet, Zinc-Coated

(Galvanized) by the Hot-Dip Process, Structural

(Physical) Quality.

A 525Specification for General Requirements for Steel

Sheet, Zinc-Coated (Galvanized) by the Hot-Dip

Process.

C 665Specification for Mineral-Fiber Blanket Thermal

Insulation for Light Frame Construction and

Manufactured Housing.

C 954Specification for Steel Drill Screws for the

Application of Gypsum Board to Steel Studs for 0.033

in. to 0.112 in. in Thickness.

C 1002Specification for Steel Drill Screws for the

Application of Gypsum Board.

E 90Method for Laboratory Measurement of Airborne Sound

Transmission Loss of Building Partitions.

E 119Methods of Fire Tests of Building Construction and

Materials.

E 413Classification for Determination of Sound Transmission

Class.

Underwriters Laboratory, Inc. (UL):

Fire Resistance Directory.

NOTICES:

Trademarks: The following trademarks used herein are owned by USG

Corporation or its subsidiaries: DUR-A-BEAD, DURABOND, FIRECODE,

PERF-A-TAPE, PLUS 3, RC-1, SHEETROCK, THERMAFIBER, and USG. S and

S-12 are registered trademarks of ITW Buildex.

Notice: USG Corporation and its subsidiaries shall not be liable

for incidental and consequential damages, directly or indirectly

sustained, nor for any loss caused by application of these goods not

in accordance with printed instructions or for other than the

intended use. Our liability is expressly limited to replacement of

defective goods. Any claim shall be deemed waived unless made in

writing to us within thirty (30) days from date it was or reasonably

should have been discovered.

Note: All products described here may not be available in all

geographic markets. Consult your local sales office or

representative for information.

PRODUCT MASTERSPEC - DRAWING COORD

USG STEEL STUD/RESILIENT DRYWALL SYSTEMS09263 - D#SECTION 09263 - USG STEEL STUD/RESILIENT DRYWALL SYSTEMS

DRAWING COORDINATION

In addition to general MASTERSPEC Instructions for coordinating

drawings with specifications, it is suggested that drawings indicate

the following information related to this section:

Locations and dimensions of areas to receive resilient gypsum

drywall sound wall systems and extent of fire and sound rated

construction.

Typical details and description of partition construction

including partition thickness; type, size, gage, and spacing of

framing; insulation thickness; and number and type of gypsum board

panels on each side. Indicate side of partition to receive

resilient channels.

Locations and details of penetrations, control joints, and other

special details.

Coordination with related work.

Suggested Details: Additional details are shown in USG product

literature listed on Evaluation Sheets. Technical assistance in

preparing details is also available from USG Representatives.

PRODUCT MASTERSPEC - SPEC COORD

USG STEEL STUD/RESILIENT DRYWALL SYSTEMS09263 - S#SECTION 09263 - USG STEEL STUD/RESILIENT DRYWALL SYSTEMS

SPECIFICATION COORDINATION

The following sections of the specifications have specific

requirements which must be coordinated with this Section.

-Division 7 Section "Firestopping": Specify fire safing.

-Division 9 Section "Gypsum Drywall": Coordinate requirements for

gypsum board finishes and related materials.