SECTION 05400

COLD FORMED METAL FRAMING

PART 1 GENERAL

SECTION INCLUDES

Load bearing formed steel stud [exterior wall,] [interior wall,] [and] [________] framing.

Formed steel [joist,] [purlin,] [slotted channel,] [and [________]] framing and bridging.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [______-____________]: Placement of anchors for securing [the work of this section.] [________.]

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section [_____-__________]: Anchors for support of [window frames.] [door frames.] [________.]

RELATED SECTIONS

Section [_____-__________]: Structural building framing.

Section 04320 - Veneer Masonry System: Veneer masonry supported by wall stud metal framing.

Section 04450 - Cut Stone Veneer: Stone veneer supported by wall stud metal framing.

Section 05311 - Steel Roof Deck: Metal roof decking.

Section 05313 - Steel Floor Deck: Metal floor decking.

Section 06114 - Wood Blocking and Curbing: Rough wood blocking.

Section [_____-__________]: Wall sheathing.

Section [_____-__________]: Head and sill flashings.

Section 07213 - Batt and Blanket Insulation:	Insulation within framing members.

Section 07900 - Joint Sealers.

Section 09111 - Metal Stud Framing System.

Section 09206 - Metal Furring and Lathing.

Section 09210 - Gypsum Plaster.

Section 09220 - Portland Cement Plaster.

Section 09260 - Gypsum Board Systems: Light weight, non- load bearing metal stud framing.

Section 09511 - Suspended Acoustical Ceilings: Ceiling suspension system.

REFERENCES

AISI - American Iron and Steel Institute - Cold-Formed Steel Design Manual.

ASTM A123 - Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products.

ASTM A446 - Steel Sheet, Zinc-Coated (Galvanized) by Hot Dip Process, Physical (Structural) Quality.

ASTM A525 - Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process.

ASTM A570 - Hot-Rolled Carbon Steel Sheet and Strip. Structural Quality.

ASTM A611 - Steel, Cold-Rolled Sheet, Carbon, Structural.

ASTM A645 - Steel Sheet, Pressure Vessel Plates, Five Percent Nickel Alloy Steel, Specially Heat Treated.

ASTM C955 - Load-Bearing (Transverse and Axial) Steel Studs, Runners (Track), and Bracing or Bridging, for Screw Application of Gypsum Board and Metal Plaster Bases.

AWCI (Association of Wall and Ceiling Industries) - Specifications Guide for Cold Formed Steel Structural Members

AWS D1.1 - Structural Welding Code.

AWS D1.3 - Light Steel Welding Code.

SSPC (Steel Structures Painting Council) - Steel Structures Painting Manual.

MFMA (Metal Framing Manufacturers Association) - Guidelines for the Use of Metal Framing.

SYSTEM DESCRIPTION

Size components to withstand design loads as follows:

Vertical Assembly: [____] psf ([____] KPa) positive and [____] psf ([____] KPa) negative.

Horizontal Assembly:	[____] psf ([____] KPa) live [and dead] loads.

Maximum Allowable Deflection: [1/180] [1/240] [1/360] [_____] span.

Design [wall] [________] system to provide for movement of components without damage, failure of joint seals, undue stress on fasteners, or other detrimental effects when subject to seasonal or cyclic day/night temperature ranges.

Design system to accommodate construction tolerances, deflection of building structural members, and clearances of intended openings.

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate component details, [framed openings,] [bearing,] [anchorage,] [loading,] [welds,] [type and location of fasteners,] and accessories or items required of related work.

Indicate [stud,] [floor joist,] [ceiling joist,] [roof joist,] [roof rafter,] [roof truss,] [and] [_____] layout.

Describe method for securing [studs] [_____] to tracks and for [bolted] [welded] [_____] framing connections.

Provide calculations for loadings and stresses of [specially fabricated framing,] [roof trusses,] [and] [________] under the Professional Structural Engineer's seal.

Product Data: Provide data on standard framing members; describe materials and finish, product criteria, limitations and [________].

Manufacturer's Installation Instructions: Indicate special procedures, perimeter conditions requiring special attention, and [________].

QUALITY ASSURANCE

Calculate structural properties of framing members in accordance with [AWCI] [MFMA] [and] [AWS D1.3] [________] requirements.

Maintain [one copy] [[____] copies] of [each] document on site.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the Products specified in this section with minimum [three] [_______] years [documented] experience.

Installer: Company specializing in performing the work of this section [with minimum [__________] years [documented] experience] [approved by manufacturer].

Design structural elements under direct supervision of a Professional Structural Engineer experienced in design of this Work and licensed [at the place where the Project is located] [in the State of [____________]].

MOCKUP

Provide mockup of exterior framed wall including [insulation,] [sheathing,] [window frame,] [door frame,] [________,] and interior and exterior finish specified in other sections, under provisions of Section [01400.] [________.]

Mockup Size:	[____x____] feet ([____x____] m), including corner condition.

Mockup may [not] remain as part of the Work.

FIELD MEASUREMENTS

Verify that field measurements are as [indicated [on shop drawings].] [instructed by the manufacturer.]

COORDINATION

Coordinate work under provisions of Section [01039.] [________.]

Coordinate with the placement of components within the stud framing system, specified in Section [________.]

PART 2 PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

FRAMING MATERIALS

Studs: ASTM C955, formed to [channel] [________] shape, [solid] [punched] [________] web, [knurled faces]; [18] [____] gage ([1.2] [____] mm) thick, [____] inch ([____] mm) face and [____] inch ([____] mm) depth.

****** [OR] ******

Studs: ASTM [A446] [A525] [A570] [A611] [A645] [_____] Grade [____] sheet steel, formed to [channel] [________] shape, [solid] [punched] [________] web, [knurled faces]; [18] [____] gage ([1.2] [____] mm) thick, [____] inch ([____] mm) face and [____] inch ([____] mm) depth.

Joists [, Purlins] [, and [________]]: ASTM [A446] [A525] [A570] [A611] [A645] [____] Grade [____] sheet steel, formed to [channel] [hat] [open box] [________] shape, [solid] [punched] [________] web; [____] gage ([____] mm) thick, [____] inch ([____] mm) face, [____] inch ([____] mm) depth.

Track: Formed [________] steel; channel shaped; same width as studs, tight fit; [____] gage ([____] mm) thick, solid web.

ACCESSORIES

Bracing, Furring, Bridging: Formed sheet steel, thickness determined for conditions encountered.

****** [OR] ******

Bracing, Furring, Bridging: Formed sheet steel, [____] inch ([____] mm) thickness.

Plates, Gussets, Clips: [Formed] sheet steel, thickness determined for conditions encountered.

****** [OR] ******

Plates, Gussets, Clips: [Formed] sheet steel, [____] inch ([____] mm) thickness.

Shop and Touch-Up Primer: [SSPC - Paint 15, Type 1, red oxide] [________].

****** [OR] ******

Touch-Up Primer for Galvanized Surfaces:	[SSPC - Paint 20 [Type I Inorganic] [Type II Organic] zinc rich] [________].

FASTENERS

Self-drilling, Self-tapping Screws, Bolts, Nuts and Washers: ASTM A123, hot dip galvanized to [1.25] [____] oz/sq ft ([380] [____] gm/sq m).

Anchorage Devices: [Power actuated,] [drilled expansion bolts,] [screws with sleeves,] [and] [________].

Welding: In conformance with [AWS D1.1] [and] [AWS D1.3].

FABRICATION

Fabricate assemblies of [framed sections] [________] of sizes and profiles required; with framing members fitted, reinforced, and braced to suit design requirements.

Fit and assemble in largest practical sections for delivery to site, ready for installation.

FINISHES

Studs: [Galvanize to [G90] [G60] [____] coating class.] [Prime paint.]

Tracks and Headers: [Galvanize to [G90] [G60] [____] coating class.] [Prime paint.]

Joists [and Purlins]: [Galvanize to [G90] [G60] [____] coating class.] [Prime paint.]

Bracing, Furring, Bridging: [Same finish as framing members.] [ASTM A123, hot dip galvanized to [1.25] [____] oz/sq ft ([380] [____] gm/sq m).] [Prime paint.]

Plates, Gussets, Clips: [Same finish as framing members.] [ASTM A123, hot dip galvanized to [1.25] [____] oz/sq ft ([380] [____] gm/sq m).] [Prime paint.]

PART 3 EXECUTION

EXAMINATION

Verify site conditions under provisions of Section [01039.] [________.]

Verify that [substrate surfaces] [building framing components] are ready to receive work.

ERECTION OF STUDDING

Install components in accordance with manufacturer's instructions.

Align floor and ceiling tracks; locate to [wall] [partition] layout. Secure in place [with fasteners] [by welding] at maximum [24] [____] inches ([600] [____] mm) oc. [Coordinate installation of sealant with floor [and ceiling] tracks.]

Place studs at [12] [16] [24] [____] inches ([300] [400] [600] [____] mm) oc; not more than [2] [____] inches ([50] [____] mm) from abutting walls and at each side of openings. Connect studs to tracks using [clip and tie] [fastener] [welding] method.

Construct corners using minimum three studs.	Double stud wall openings, door and window jambs.

Erect load bearing studs one piece full length. Splicing of studs is not permitted.

Erect load bearing studs, brace, and reinforce to develop full strength, to achieve design requirements.

Coordinate placement of insulation in multiple stud spaces made inaccessible after erection.

Install intermediate studs above and below openings to align with wall stud spacing.

Provide deflection allowance in stud track, directly below horizontal building framing at non-load bearing framing.

Attach [cross studs] [furring channels] to studs for attachment of fixtures anchored to walls.

Install framing between studs for attachment of mechanical and electrical items, and to prevent stud rotation.

Touch-up field welds and damaged [galvanized] [primed] surfaces with primer.

Complete framing ready to receive [________].

ERECTION OF [JOISTS] [PURLINS] [__________]

Install framing components in accordance with manufacturer's instructions.

Make provisions for erection stresses. Provide temporary alignment and bracing.

Place [joists] [purlins] [________] at [12] [16] [24] [____] inches ([300] [400] [600] [____] mm) o.c.; not more than [2] [____] inches ([50] [____] mm) from abutting walls. Connect joists to supports using [fastener] [welding] [________] method.

Set [floor] [ceiling] [joists] [________] parallel and level, with lateral bracing and bridging.

Locate joist end bearing directly over load bearing studs or provide load distributing member to top of stud track.

Provide web stiffeners at [reaction points.] [__________.]

Touch-up field welds and damaged [galvanized] [primed] surfaces with primer.

Complete framing ready to receive [________].

ERECTION TOLERANCES

Maximum Variation from True Position: [____] inch ([____] mm).

Maximum Variation of any Member from Plane: [____] inch ([____] mm).

END OF SECTION