CONSTRUCTION STANDARD SPECIFICATION

SECTION 05400

[COLD-FORMED METAL FRAMING]{.underline}

Page

PART 1 - GENERAL

1.01 Summary [2](#summary)

1.02 Submittals [2](#submittals)

1.03 Quality Assurance [2](#quality-assurance)

1.04 Delivery, Storage, And Handling [3](#delivery-storage-and-handling)

PART 2 - PRODUCTS

2.01 Manufacturers [3](#manufacturers)

2.02 Metal Framing [3](#metal-framing)

2.03 Fabrication [4](#fabrication)

PART 3 - EXECUTION

3.01 Installation [4](#installation)

CONSTRUCTION STANDARD SPECIFICATION

SECTION 05400

[COLD-FORMED METAL FRAMING]{.underline}

# PART 1 - GENERAL

## 1.01 SUMMARY

A. Types of cold-formed metal framing units include the following:

1\. Load-bearing punched channel studs.

2\. C-shaped load-bearing steel studs.

3\. C-shaped steel joists

B. Non-load bearing studs are specified in Section 09250, \"Gypsum
Drywall.\"

## 1.02 SUBMITTALS

A. Product Data: Submit product information and installation
instructions from manufacturers for each item of cold-formed metal
framing and accessories.

B. Shop Drawings: Shop drawings shall include placing drawings for
framing members showing size and gauge designations, number, type,
location, and spacing.

1\. Indicate supplemental strapping, bracing, splices, bridging,
accessories, and details required for proper installation.

C. Welding Certificates: Provide certificate signed by Contractor
certifying that welders comply with requirements specified under
"Quality Assurance" Article, prior to performing work.

D. Welding Procedures: Provide written welding procedure specification
(WPS) document per AWS Code requirements.

## 1.03 QUALITY ASSURANCE

A. Component Design: Calculate structural properties of studs and joists
in accordance with the American Iron and Steel Institute (AISI),
\"Specification for Design of Cold-Formed Steel Structural Members.\"

B. Welding Standards: Comply with applicable provisions of ANSI/AWS D1.1
"Structural Welding Code-Steel", and ANSI/AWS D1.3 "Structural Welding
Code-Sheet Steel."

Certify that each welder has satisfactorily passed AWS qualification
tests for welding processes involved, and if pertinent, has undergone
recertification.

## 1.04 DELIVERY, STORAGE, AND HANDLING

> Deliver to project site in manufacturer\'s unopened containers or
> bundles, fully identified with name, brand, type, and grade. Store off
> the ground in a dry ventilated space or protect with impervious
> covering. Protect metal framing units from rusting and damage.

# PART 2 - PRODUCTS

## 2.01 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements,
manufacturers offering products that may be incorporated in the work
include but are not limited to the following:

Dale Industries, Inc.

Dietrich Industries, Inc.

USG Industries

Unimast, Inc.

Wheeling Corrugating Co.

## 2.02 METAL FRAMING

A. System Components: Manufacturers\' standard load-bearing steel studs
and joists of type, size, shape, and gauge as indicated. With each type
of metal framing required, provide manufacturer\'s standard steel
runners (tracks), blocking, lintels, reinforcements, shoes, clip angles,
fasteners, and accessories for applications indicated, as needed to
provide a complete metal framing system.

B. Materials and Finishes:

1\. For 16 gauge and heavier units, fabricate metal framing components
of structural quality steel sheet with a minimum yield point of 40,000
psi, ASTM A 446 Grade C.

2\. For 18 and 20 gauge units, fabricate metal framing components of
commercial quality steel sheet with a minimum yield point of 33,000 psi,
ASTM A 446 Grade A.

3\. Provide galvanized finish to metal framing components complying with
ASTM A 525 for minimum G 60 coating.

4\. Finish of installation accessories to match that of main framing
components, unless otherwise indicated.

C. Fasteners: Provide nuts, bolts, washers, screws, and other fasteners
with corrosion-resistant plated finish.

D. Electrodes for Welding: Comply with AWS Code and as recommended by
stud manufacturer.

E. Galvanizing Repair: Where galvanized surfaces are damaged, prepare
surfaces and repair in accordance with procedures specified in ASTM A
780.

## 2.03 FABRICATION

A. General: Framing components may be prefabricated into assemblies
before erection. Fabricate panels plumb, square, true-to-line, and
braced against racking with joints welded. Perform lifting of
prefabricated units to prevent damage or distortion.

1\. Fabricate units in jig templates to hold members in proper alignment
and position and to assure consistent component placement.

B. Fasten cold-formed metal framing members by welding or screw
fastening, as standard with fabricator. Do not field weld units of 20
gauge or lighter. Wire tying of framing members is not permitted.

1\. Comply with AWS requirements and procedures for welding, appearance
and quality of welds, and methods used in correcting weld work.

2\. Locate mechanical fasteners and install according to cold-formed
metal framing manufacturer's instructions.

C. Fabrication Tolerances: Fabricate units to a maximum allowable
tolerance variation from plumb, level, and true-to-line of 1/8 inch in
10 feet.

# PART 3 - EXECUTION

## 3.01 INSTALLATION

A. General: Install cold-formed metal framing and accessories plumb,
square, true to line, and with connections securely fastened, in
accordance with manufacturer\'s recommendations and the requirements of
this Section.

1\. Fasten cold-formed metal framing members by welding or screw
fastening, as standard with fabricator. Wire tying of framing members is
not permitted.

2\. Comply with AWS requirements and procedures for welding, appearance
and quality of welds, and methods used in correcting weld work.

a\. Where weld throat is not shown on the Contract documents, the weld
throat shall be at least as large as the thickness of the thinnest sheet
joined. All welds shall provide complete fusion of the sheets without
"blow-out."

3\. Locate mechanical fasteners and install according to cold-formed
metal framing manufacturer's instructions.

B. Runner Tracks: Install continuous tracks sized to match studs. Align
tracks accurately to layout at base and tops of studs.

1\. Secure tracks as recommended by stud manufacturer for type of
construction involved, spacing not to exceed 24 inches o.c. for nail or
power-driven fasteners, or 16 inches o.c. for other types of attachment.
Provide fasteners at corners and ends of tracks.

2\. All track butt joints, abutting pieces of track shall be securely
anchored to a common structural element or they shall be spliced
together.

C. Wall Studs: Secure studs to top and bottom runner tracks, except
where provisions for structure vertical movement is provided on
drawings, by either welding or screw fastening at both inside and
outside flanges.

1\. Set studs plumb, except as needed for diagonal bracing or required
for non-plumb walls or warped surfaces and similar requirements.

2\. Where stud system abuts structural columns or walls, including
masonry walls, anchor ends of stiffeners to supporting structure.

3\. Axially loaded studs shall have full bearing against the inside web
of top and bottom tracks. Splices in axially loaded studs are not
permitted.

D. Install supplementary framing, blocking, and bracing in metal framing
system wherever walls or partitions are indicated to support fixtures,
equipment, services, casework, heavy trim and furnishings, and similar
work requiring attachment to the wall or partition. Where type of
supplementary support is not otherwise indicated, comply with stud
manufacturer\'s recommendations.

E. Frame wall openings larger than 2\'-0\" square with double stud at
each jamb of frame, except where more than two studs are either shown or
indicated in manufacturer\'s instructions.

1\. Install runner tracks and jack studs above door openings, and above
and below wall openings.

2\. Anchor tracks to jamb studs with stud shoes or by welding, and space
jack studs same as full-height studs of wall.

3\. Secure stud system wall opening frame in manner indicated.

F. Frame both sides of expansion and control joints with separate studs;
do not bridge the joint with components of stud system.

G. Install horizontal bridging in all load-bearing and exterior stud
wall systems, with two (2) equally spaced rows for walls less than 10
feet high and rows spaced not more than 48 inches o.c. at walls higher
than 10 feet.

H. Horizontal Bridging is not required for non-loadbearing interior stud
walls unless noted on the drawings.

I. Provisions for structure vertical movement shall be provided where
indicated on the drawings.

J. All welds shall be touched up using zinc-rich paint.

K Erection Tolerances: Bolt or weld wall panels (at both horizontal and
vertical junctures) to produce flush, even, true-to-line joints.

1\. Maximum variation in plane and true position between prefabricated
assemblies should not exceed 1/16 inch.

L. Installation of Joists: Install level, straight, and plumb, complete
with bracing and reinforcing as indicated on drawings. Provide not less
than 1-1/2 inch end bearing.

1\. Reinforce ends with end clips, steel hangers, steel angle clips,
steel stud section, or as otherwise recommended by joist manufacturer.

2\. When required, reinforce joists at interior supports with single
short length of joist section located directly over interior support,
snap-on shoe, 30 percent side-piece lapped reinforcement, or other
method recommended by joist manufacturer.

3\. Secure joists to interior support systems to prevent lateral
movement of bottom flange.

END OF SECTION