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CLARKWESTERN Building Systems Non-Load Bearing Wall Framing
 
         
SECTION 09110
 
         
NON-LOAD BEARING WALL FRAMING
 
         
 
         
          ** NOTE TO SPECIFIER ** CLARKWESTERN Building Systems
.
This section is based on the products of CLARKWESTERN, headquartered at:
101 Clark Blvd.
Middletown, OH 45044
Tel: (800) 543-7140
Fax: (888) 874-1949
Email: lmiller@clarkwestern.com
Web: www.clarkwestern.com
.
CLARKWESTERN 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. CLARKWESTERN, located in Middletown, Ohio, has been supplying steel framing products in the eastern United States since 1981. Clark acquired its second location Delta Metal Products in Dallas, Texas in 1999. Since that time we have opened a plant in Jefferson, Georgia and Ocala, Florida. In 2004, Clark Steel Framing acquired Dale Industries which added five more locations to our business. Most recently we have announced the opening of our newest facility in Rochelle, Illinois. In 2006, we completed the final integration of our sister company Western Metal Lath in Riverside, California. Western has over fifty years of experiences providing quality lath, accessories and framing products to the western United States. The combination of Clark and Western along with our acquisition of Dale Industries and our new plant openings gives us thirteen facilities nationally..
CLARKWESTERN has grown to what we are today so 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. We continue to expand our product lines. We now offer industry leading shaft wall framing products and industry preferred and recognized metal corner bead products. Our engineering division, CLARKWESTERN Design, located in Georgia and in California, is quickly becoming the industries preferred resource for light gauge framing design and consultation.
CLARKWESTERN works to bring its years of experience in the industry to our customers through knowledgeable salespeople 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 plants and products so that we can be the industries first choice from framing to finishing, coast to coast.
UltraSTEEL® is a registered trademark of Clarkwestern Building Systems.
Swiftclip™ is a trademark of Clarkwestern Building Systems.
 
          PART 1GENERAL
 
          1.1SECTION INCLUDES
 
          A.Non-load bearing metal studs for wall assemblies.
 
          B.Area Separation and shaft wall framing products.
 
          1.2RELATED SECTIONS
          ** NOTE TO SPECIFIER ** Delete references below not relevant to this project, add others as required.
 
          A.Section 05400 - Cold-Formed Metal Framing.
 
          B.Section 09205 - Furring and Lathing: Lath and furring for interior plaster applications.
 
          C.Section 09210 - Gypsum Plaster: Interior plaster applications.
 
          D.Section 09250 - Gypsum Board: Gypsum interior sheathing.
 
          E.Section 09260 - Gypsum Board Assemblies: Shaft Walls and Area Separation Walls.
 
          1.3REFERENCES
          ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
          A.AISI - Standard for Cold-Formed Steel Framing General Provisions.
 
          B.AISI - North American Specification (NASPEC) for the Design of Cold-Formed Steel Structural Members - 2001.
 
          C.AISI/COS 2001 - Standard for Cold-Formed Steel Framing - Prescriptive Method for One and Two Story Family Dwelling.
 
          D.ASTM A 653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy Coated (Galvannealed) by the Hot-Dip Process.
 
          E.ASTM A 780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings.
 
          F.ASTM A 1003 - Standard Specification for Steel Sheet, Carbon, Metallic- and Nonmetallic-Coated for Cold-Formed Framing Members.
 
          G.ASTM C 645 - Standard Specification for Nonstructural Steel Framing Members - 2006.
 
          H.ASTM C 754 - Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products.
 
          I.ASTM C 1513 - Standard Specification for Steel Tapping Screws for Cold-Formed Steel Framing Connections.
 
          J.ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
 
          K.ASTM E 90 - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements.
 
          L.ASTM E 119 - Standard Test Methods for Fire Tests of Building Construction and Materials.
 
          M.ASTM E 413 - Classification for Rating Sound Insulation.
 
          N.GA-600 - Fire Resistance Design Manual.
 
          1.4DESIGN REQUIREMENTS
 
          A.Design steel in accordance with American Iron and Steel Institute Publication "Specification for the Design of Cold-Formed Steel Structural Members", except as otherwise shown or specified.
 
          B.Design loads: As indicated on the Architectural Drawings. 5 PSF minimum design lateral load is required for interior walls by the building code. Shaftwall framing minimum design lateral load is typically 5 - 15 PSF.
 
          C.Design framing systems to withstand design loads without deflections greater than the following:
          ** NOTE TO SPECIFIER ** Delete items below not required for project.
          1.Interior Non-Load Bearing Walls: Lateral deflection of: L/120.
          2.Interior Non-Load Bearing Walls: Lateral deflection of: L/180.
          3.Interior Non-Load Bearing Walls: Lateral deflection of: L/240.
          4.Interior Non-Load Bearing Walls: Lateral deflection of: L/360.
 
          D.Design framing system to accommodate deflection of primary building structure and construction tolerances.
 
          E.Fire-Test-Response Characteristics: For fire-resistance-rated assemblies that incorporate non-load-bearing steel framing, provides materials and construction identical to those tested in assembly indicated according to ASTM E119 by an independent testing laboratory. Products used in the assembly shall carry a classification label from the testing laboratory.
 
          F.Sound Transmission Characteristics [STC]: For gypsum assemblies [wall/ceilings] with STC rated requirements, provide materials and construction methods that are identical to the requirements of either ASTM E 90, for laboratory tests, or ASTM E 336, for field tests. Testing or inspection agencies must be qualified independent organizations.
 
          1.5SUBMITTALS
 
          A.Submit under provisions of Section 01300.
 
          B.Submit manufacturer's product literature and data sheets for specified products.
 
          C.Manufacturer's certification of product compliance with codes and standards.
 
          1.6QUALITY ASSURANCE
 
          A.Contractor shall provide effective, full time quality control over all fabrication and erection complying with the pertinent codes and regulations of government agencies having jurisdiction.
 
          B.Conduct pre-installation meeting to verify project requirements, substrate conditions, and manufacturer's installation instructions.
 
          1.7DELIVERY, STORAGE, AND HANDLING
 
          A.Notify manufacturer of damaged materials received prior to installing.
 
          B.Deliver materials in manufacturer's original, unopened, undamaged containers with identification labels intact.
 
          C.Store materials protected from exposure to rain, snow or other harmful weather conditions, at temperature and humidity conditions per the recommendations of ASTM C754 section 8.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
          ** NOTE TO SPECIFIER ** The CLARKWESTERN location below is that of the corporate headquarters. CLARKWESTERN has manufacturing locations throughout the United States.
 
          A.Acceptable Manufacturer: CLARKWESTERN, which is located at: 101 Clark Boulevard, Middletown, OH 45044. ASD. Toll Free Tel: 800-543-7140; Tel: 513-539-2900; Fax: 888-874-1949; Email: lmiller@clarkwestern.com; Web: www.clarkwestern.com.
 
          B.Requests for substitutions will be considered in accordance with provisions of Section 01600.
 
          C.All products to be manufactured by current members of the Steel Stud Manufacturers Association (SSMA).
 
          2.2MATERIALS
 
          A.Steel: Galvanized Steel meeting or exceeding the requirements of ASTM A 1003.
          1.Coating: Galvanized G40 (Z120) coating minimum or equivalent, complying with ASTM C 645.
          2.Coating: Galvanized G60 (Z180) coating minimum or equivalent, complying with ASTM C 645.
 
          2.3COMPONENTS
          ** NOTE TO SPECIFIER ** Select from the following product criteria as required for the project requirements. Delete product sections below not required for project.
 
          A.Nonstructural Studs: Cold-Formed galvanized steel C-studs. Material: Galvanized steel meeting or exceeding the requirements of ASTM A754 for conditions indicated below:
          ** NOTE TO SPECIFIER ** All CLARKWESTERN facilities are converting nonstructural stud & track framing to UltraSTEEL. Once your local facility converts to UltraSTEEL they will no longer provide traditional nonstructural stud and track. For information and an up to date roll out map for UltraSTEEL please visit our UltraSTEEL section in our website at: www.clarkwestern.com.

** NOTE TO SPECIFIER ** Select FLANGE LENGTH - 125 flange is only used for nonstructural studs.
          1.Flange Length: 1 1/4 inch (32mm) 125 flange.
          ** NOTE TO SPECIFIER ** Select required WEB or WALL DEPTH. 7 of the next 8 paragraphs. If more than one size is required, identify the location where each product will be used on the Contract Drawings.
          2.Web Depth: 1 5/8 inch (41 mm) 162 depth.
          3.Web Depth: 2 1/2 inch (64 mm) 250 depth.
          4.Web Depth: 3 1/2 inch (89 mm) 350 depth.
          5.Web Depth: 3 5/8 inch (92 mm) 362 depth.
          6.Web Depth: 4 inch (102 mm) 400 depth.
          7.Web Depth: 5 1/2 inch (140 mm) 550 depth.
          8.Web Depth: 6 inch (152.4 mm) 600 depth.
          9.Web Depth: As indicated on drawings.
          ** NOTE TO SPECIFIER ** Select MINIMUM MATERAL THICKNESS. Delete 1 of the next 2 paragraphs. If more than one thickness is required, identify the location where each product will be used on the Contract Drawings.
          10.Minimum Material Thickness: Traditional 25ga or UltraSTEEL 25 EQ.
          11.Minimum Material Thickness: Traditional 20ga or UltraSTEEL 20 EQ.
          ** NOTE TO SPECIFIER ** Select punch out configuration based on project location. West coast market has initial punch out at 24 inches. Other locations are at 12 inches. Delete one of the next two paragraphs.
          12.Punch Outs: 12 inches (305mm) from base and every 48 inches (1219mm) thereafter.
          13.Punch Outs: 24 inches (610 mm) from base and every 48 inches (1219mm) thereafter.
 
          B.Nonstructural Track: Cold-Formed galvanized steel runner tracks
          1.Flange Length: 1 1/4 inch (32 mm) T125 flange.
          ** NOTE TO SPECIFIER ** Select required WEB or WALL DEPTH. Delete 7 of the next 8 paragraphs. If more than one size is required, identify the location where each product will be used on the Contract Drawings.
          2.Web Depth: 1 5/8 inch (41 mm) 162 depth.
          3.Web Depth: 2 1/2 inch (64 mm) 250 depth.
          4.Web Depth: 3 1/2 inch (89 mm) 350 depth.
          5.Web Depth: 3 5/8 inch (92 mm) 362 depth.
          6.Web Depth: 4 inch (102 mm) 400 depth.
          7.Web Depth: 5 1/2 inch (140 mm) 550 depth.
          8.Web Depth: 6 inch (152.4 mm) 600 depth.
          9.Web: Track web to match stud web size.
          ** NOTE TO SPECIFIER ** Select MINIMUM MATERAL THICKNESS. Delete 2 of the next 3 paragraphs. If more than one thickness is required, identify the location where each product will be used on the Contract Drawings.
          10.Minimum Material Thickness: Traditional 25ga or UltraSTEEL 25 EQ.
          11.Minimum Material Thickness: Traditional 20ga or UltraSTEEL 20 EQ.
          12.Minimum Material Thickness: Track thickness to match wall stud thickness.
 
          C.Deflection Track: Cold-Formed Deep Leg Runner Slip Track.
          ** NOTE TO SPECIFIER ** Select Deflection Track LEG LENGTH. Delete 4 of the next 5 paragraphs. If more than one thickness is required, identify the location where each product will be used on the Contract Drawings. - 250 Flange is required for a 3/4 inch deflection gap. - 300 Flange is required for a 1 inch deflection gap.
          1.Leg Length: 2 inch (51 mm) T200 flange.
          2.Leg Length: 2 1/2 inch (63 mm) T250 flange.
          3.Leg Length: 3 inch (76mm) T300 flange.
          4.Leg Length: 3 1/2 inch (89 mm) T350 flange.
          5.Leg Length: As required by design.
          ** NOTE TO SPECIFIER ** Select Deflection Track THICKNESS. Delete 6 of the next 7 paragraphs. If more than one thickness is required, identify the location where each product will be used on the Contract Drawings.
          6.Minimum Material Thickness: 18 mil (25 gauge) 0.0179 inches.
          7.Minimum Material Thickness: 30 mil (20 gauge) 0.0296 inches.
          8.Minimum Material Thickness: 33 mil (20 gauge) 0.0329 inches.
          9.Minimum Material Thickness: 43 mil (18 gauge) 0.0428 inches.
          10.Minimum Material Thickness: 54 mil (16 gauge) 0.0538 inches.
          11.Minimum Material Thickness: 68 mil (14 gauge) 0.0677 inches.
          12.Minimum Material Thickness: 97 mil (12 gauge) 0.0966 inches.
          13.Minimum Material Thickness: As required by design.
          ** NOTE TO SPECIFIER ** Select MINIMUM YIELD STRENGTH. Delete 2 of the next 3 paragraphs.
          14.Minimum Yield Strength: 33ksi (227 MPa) (for 33mils through 118mils).
          15.Minimum Yield Strength: 50ksi (345 MPa) (optional for 54mils and up).
          16.Minimum Yield Strength: As required by design.
 
          D.U-Channel (CRC Cold Rolled Channel):
          ** NOTE TO SPECIFIER ** Select U-Channel Size required in this project. Delete others not required.
          1.Size: 150U50-54 1-1/2 inch (38mm) 54mils (16ga.).
          2.Size: 075U50-54 3/4 inch (19.1mm) 54mils (16ga.).
          3.Size: As required by design.
 
          E.Furring Channel: Furring existing walls and suspended ceiling applications.
          ** NOTE TO SPECIFIER ** Select Furring Channel required in this project. Delete others not required.
          1.Size: 087F125-18 7/8 inch (22mm) Furring Channel 18mils (25ga).
          2.Size: 087F125-27 7/8 inch (22mm) Furring Channel 27mils (22ga).
          3.Size: 087F125-30 7/8 inch (22mm) Furring Channel 30mils (20ga Drywall).
          4.Size: 087F125-33 7/8 inch (22mm) Furring Channel 33mils (20ga Structural).
          5.Size: 087F125-43 7/8 inch (22mm) Furring Channel 43mils (18ga).
          6.Size: 087F125-54 7/8 inch (22mm) Furring Channel 54mils (16ga).
          7.Size: 150F125-18 1 1/2 inch (38mm) Furring Channel 18mils (25ga).
          8.Size: 150F125-27 1 1/2 inch (38mm) Furring Channel 27mils (22ga).
          9.Size: 150F125-30 1 1/2 inch (38mm) Furring Channel 30mils (20ga Drywall).
          10.Size: 150F125-33 1 1/2 inch (38mm) Furring Channel 33mils (20ga Structural).
          11.Size: 150F125-43 1 1/2 inch (38mm) Furring Channel 43mils (18ga).
          12.Size: 150F125-54 1 1/2 inch (38mm) Furring Channel 54mils (16ga).
          13.Size: As required by design.
 
          F.Resilient Channel: Cold-Formed Resilient Channel System to decrease sound transmissions.
          ** NOTE TO SPECIFIER ** Select Resilient Channel required in this project. Delete others not required.
          1.Size: One Leg 1/2 inch x 2 1/4 inch Resilient Channel.
          2.Size: Two Leg 1/2 inch x 1 1/4 inch Resilient Channel.
 
          G.Shaft Wall System: Coordinate materials found in this section with applications and materials found in Section 09260. Complies with ASTM C 754 for the conditions indicated. Non-Load bearing gypsum wall assemblies for use in the following areas:
          ** NOTE TO SPECIFIER ** Select specific Shaft Wall Applications required. Delete 4 of the next 5 paragraphs.
          1.Shaft Wall Application: Elevator Shafts.
          2.Shaft Wall Application: Stairwells.
          3.Shaft Wall Application: Mechanical Shafts.
          4.Shaft Wall Application: Unlined Air Shafts.
          5.Shaft Wall Application: Other: _________________.
          ** NOTE TO SPECIFIER ** Select specific Shaft Wall Width required. Delete 2 of the next 3 paragraphs.
          6.Shaft Wall Width: CH-Stud & E-Stud with J-Runner, 2 1/2 inch Wide (64 mm).
          7.Shaft Wall Width: CH-Stud & E-Stud with J-Runner, 4 inch Wide (102 mm).
          8.Shaft Wall Width: CH-Stud & E-Stud with J-Runner, 6 inch Wide (152 mm).
          ** NOTE TO SPECIFIER ** Select specific Shaft Wall Thickness required. Delete 1 of the next 2 paragraphs.
          9.Shaft Wall Material Thickness: 25 gauge (18 mils).
          10.Shaft Wall Material Thickness: 20 gauge (33 mils).
          ** NOTE TO SPECIFIER ** Select specific Shaft Wall Deflection required. Delete 2 of the next 3 paragraphs.
          11.Shaft Wall Deflection: L/120.
          12.Shaft Wall Deflection: L/240.
          13.Shaft Wall Deflection: L/360.
 
          H.Area Separation Wall System: Lightweight non-load-bearing gypsum panel assembly designed to provide fire resistive protection at common walls. Complies with ASTM C 754 for the conditions indicated. Coordinate materials found in this section with applications and materials found in Section 09260.
          ** NOTE TO SPECIFIER ** Specific Area Separation Wall System components required:
          1.Area Separation Wall System: H Stud with C-Runner, 2 inch Wide (51 mm).
          2.Material Thickness: 25 gauge (18 mils).
          3.Area Separation Clip: Aluminum Breakaway Clips.
 
          I.Drywall Corner Beads: Cold-Formed galvanized steel beads.
          ** NOTE TO SPECIFIER ** Select Corner Beads required in this project. Delete others not required. If more than one type is required, identify the location where each product will be used on the Contract Drawings.
          1.103 USG Durabead Deluxe Metal Corner Bead 1 1/4 inchx1 1/4 inch (32mm x 32mm).
          2.Bull Nose Drywall Corner Bead with 3/4 inch Radius.
 
          J.Drywall Trims: Cold-Formed galvanized steel trims.
          ** NOTE TO SPECIFIER ** Select Drywall Trims required in this project. Delete others not required. If more than one type is required, identify the location where each product will be used on the Contract Drawings.
          1.L-Trim (Mudable) Size: 1/2 inch (12.7 mm).
          2.L-Trim (Mudable) Size: 5/8 inch (15.9 mm).
          3.U-Trim (Mudable) Size: 1/2 inch (12.7 mm).
          4.U-Trim (Mudable) Size: 5/8 inch (15.9 mm).
          5.J-Trim (Reveal) Size: 1/2 inch (12.7 mm).
          6.J-Trim (Reveal) Size: 5/8 inch (15.9 mm).
 
          K.Framing Accessories: Accessories required in this project.
          ** NOTE TO SPECIFIER ** Select Accessories required in this project. Delete others not required.
          1.Flat Strapping for Backing Strip.
          2.Flat Strapping and bridging for lateral bracing.
          3.L-Angles.
          4.SwiftClip Fixed Connection Angles.
 
          L.Fasteners: Self-drilling, self-tapping screws; complying with ASTM C 1513 - Standard Specification for Steel Tapping Screws for Cold-Formed Steel Framing Connections.
 
          M.Touch-Up Paint: Complying with ASTM A 780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings.
 
          PART 3EXECUTION
 
          3.1INSPECTION
 
          A.Inspect supporting substrates and structures for compliance of proper conditions for installation and performance of the cold-formed structural framing.
 
          3.2PREPARATION
 
          A.Prepare attachment surfaces so that they are plumb, level, and in proper alignment for accepting the cold-formed structural framing.
 
          3.3FABRICATION
 
          A.Prior to fabrication of framing, submit product submittal sheets to the architect or engineer to obtain approval.
 
          B.Framing components may be preassembled into panels prior to erecting. Prefabricate panels so they are square, with components attached in a manner which prevents racking and minimizes distortion during lifting and transport.
 
          C.Cut all framing components square for attachment to perpendicular members or as required for an angular fit against abutting members.
 
          D.Plumb, align and securely attach studs to flanges of both upper and lower runners, except that in the case of interior, non-load bearing walls where studs need not be attached to upper or lower runners.
 
          E.Splices in members other than top and bottom runner track are not permitted.
 
          F.Provide temporary bracing where required, until erection is complete.
 
          3.4INSTALLATION - NON-AXIAL LOAD-BEARING CURTAIN WALLS
 
          A.Runners shall be securely anchored to the supporting structure as shown on the drawings.
 
          B.Jack studs or cripples shall be installed below window sills, above window and door heads, and elsewhere to furnish supports.
 
          C.Lateral bracing shall be provided by use of gypsum board and gypsum sheathing or by horizontal straps or cold-rolled channels. Bracing shall conform to Section D3 of the AISI North American Specification (NAS).
 
          D.Provisions for structure vertical movement shall be provided where indicated on the drawings prepared by the engineer of record.
 
          E.Handling and lifting of prefabricated panels shall be done in a manner so as not to cause distortion in any member.
 
          3.5INSTALLATION - SHAFTWALL FRAMING: RUNNERS, STUDS AND LINER BOARDS
 
          A.Attach J-Runners plumb with one another, long leg on shaft side, at floor and structure overhead using power-driven fasteners located 2 inches (51mm) from each end and 24 inches (610mm) o.c. between. Cut jamb J-Runners or E-Studs not less than 3/8 inch (10mm) nor more than 1/2 inch (13mm) less than distance from floor to structure above. Position J-Runners or E-Studs at wall structural jambs. Do not attach to floor or overhead J-Runners.
 
          B.With steel frame construction attach J-Runners to beams and J-Runners or E-Studs to columns prior to fireproofing application. Where fireproofing is more than 1 in. thick, position Z-Clips at jambs no more than 4 inches (102mm) from floor and structure above and no more than 24 inches (610mm) o.c. between. Attach Z-Clips to steel frame with power-driven fasteners. Attach J-Runners and E-Studs to Z-Clips with two (2) 1/2 inch (13mm) type S-12 screws. Remove excess fireproofing from insides of J-Runners and E-Studs before installing liner boards.
 
          C.Cut liner boards 1 inch (25mm) less than distance from floor to structure above; erect vertically into floor and overhead J-Runners, and into jamb J-Runner or E-Stud. Where wall height exceeds maximum length of liner board, position board end joints within upper and lower 1/3 of height from floor to structure above; stagger joints in adjacent boards. Achieve tight fit at mating board ends.
 
          D.Cut C-H Studs not less than 3/8 inches (10mm) nor more than 1/2 inch (13mm) less than distance from floor to structure above. Fit first C-H Stud over leading edge of first liner board. Install remaining liner boards and C-H Studs. Do not attach C-H Studs to J-Runners.
 
          E.Do not splice C-H Studs or E-Studs. For wall heights exceeding 16 feet (4877mm) attach C-H studs, E-Studs, or jamb J-runners to floor and overhead J-Runners with two (2) 1/2 inch (13mm) Type S-12 screws on shaft side and one (1) on floor side. Always fit liner boards tightly into studs or jamb runners. Always fit studs or jamb runners tightly over liner boards.
 
          F.Corners and intersections: Position jamb J-Runners or E-Studs at corners and T-intersections.
 
          G.Door openings: Install E-Studs plumb at each jamb of swinging doors. Install jamb struts plumb with long legs on shaft side at each jamb of elevator doors. Attach jamb strut studs to floor and overhead J-Runners with two (2) 3/8 in (10mm) Type S-12 screws pan head on shaft side and one (1) on floor side. Attach strut studs to door jamb anchors with two (2) 1/2 inch (13mm) Type S-12 pan head screws per anchor.
 
          H.For walls above doors miter-cut J-Runners legs and position J-Runner horizontally to fit tightly between strut studs to serve as opening head. At each jamb extend J-Runner upward into overhead J-Runner. Attach J-Runner webs to strut stud webs with 3/8 inch (10mm) Type S-12 screws spaced not more than 12 inch (305mm) oc, 2 inches (51mm) above opening head, and not more than 4 inches (102mm) from overhead J-Runner, using not less than 3 screws per jamb. Install C-H Studs horizontally at not less than 24 inches (610mm) o.c.; attach to each mitered jamb J-Runner one (1) 3/8 inch (10mm) Type S-12 screw shaft side and one (1) floor side.
 
          I.Provide additional liner boards, gypsum shims and fillers at elevator door frames as necessary to maintain fire integrity of the tested labeled frame construction. Construct opening in conformance with frame manufacturer's fire test report; secure copy of fire test report from frame manufacturer and maintain on site for elevator inspector.
 
          J.Small openings: Frame openings with E-Studs or J-Runners at jambs; frame heads and sills with J-Runners. Attach head and sill J-Runners to jambs with two (2) 3/8 inch (10mm) Type S-12 screws on shaft side and one (1) on floor side.
 
          K.Do not exceed allowable stresses in C-H Studs, E-studs or J-Runners.
 
          3.6PROTECTION
 
          A.Protect installed products until completion of project.
 
          B.Touch-up, repair or replace damaged products before substantial completion of final installation.
 
         
END OF SECTION