A-1 ALLOYS
A-1 ALLOYS INC.
3330 Beyer Bl. #F
San Diego, CA, 92173
Phone: 1-800-266-2569
Fax: (619) 591-2198
Email: a1sales@a1alloys.com
Website: www.birdprecision.com
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ProSTUD® Drywall Tracks
Unit of Measure
Items ProSTUD® Drywall Tracks
162PDT125-30
ProTRAK® 0.128 Square Inch (in²) Area Drywall Track 		ProSTUD® Drywall Tracks
250PDT125-30
ProTRAK® 0.156 Square Inch (in²) Area Drywall Track 		ProSTUD® Drywall Tracks
362PDT125-30
ProTRAK® 0.191 Square Inch (in²) Area Drywall Track 		ProSTUD® Drywall Tracks
400PDT125-30
ProTRAK® 0.203 Square Inch (in²) Area Drywall Track 		ProSTUD® Drywall Tracks
600PDT125-30
ProTRAK® 0.265 Square Inch (in²) Area Drywall Track
Description N/A
Brands N/A A-1 Alloys ClarkDietrich® ProTRAK®
Design Thickness N/A 0.0312 in
Tensile Strength Fy N/A 33 ksi
Area N/A 0.128 in² N/A 0.156 in² N/A 0.191 in² N/A 0.203 in² N/A 0.265 in²
Weight N/A 0.44 lb/ft N/A 0.53 lb/ft N/A 0.65 lb/ft N/A 0.69 lb/ft N/A 0.90 lb/ft
Gross Section Properties (lx) N/A 0.067 in4 N/A 0.169 in4 N/A 0.389 in4 N/A 0.489 in4 N/A 1.278 in4
Gross Section Properties (Rx) N/A 0.722 in N/A 1.042 in N/A 1.428 in N/A 1.553 in N/A 2.196 in
Gross Section Properties (ly) N/A 0.022 in4 N/A 0.025 in4 N/A 0.027 in4 N/A 0.028 in4 N/A 0.031 in4
Gross Section Properties (Ry) N/A 0.409 in N/A 0.397 in N/A 0.378 in N/A 0.371 in N/A 0.340 in
Effective Section Properties at Tensile Strength (Fy) (Ae) N/A 0.080 in² N/A 0.084 in² N/A 0.087 in² N/A 0.088 in² N/A 0.090 in²
Effective Section Properties at Tensile Strength (Fy) (lx) N/A 0.054 in4 N/A 0.140 in4 N/A 0.330 in4 N/A 0.417 in4 N/A 1.074 in4
Effective Section Properties at Tensile Strength (Fy) (Sx) N/A 0.048 in³ N/A 0.087 in³ N/A 0.149 in³ N/A 0.172 in³ N/A 0.240 in³
Effective Section Properties at Tensile Strength (Fy) (Ma) N/A 951 in·lb N/A 1713 in·lb N/A 2938 in·lb N/A 3407 in·lb N/A 4737 in·lb
Effective Section Properties at Tensile Strength (Fy) (Vag) N/A 610 lb N/A 832 lb N/A 755 lb N/A 683 lb N/A 454 lb
Torsional Properties (Jx1000) N/A 0.04168 in4 N/A 0.05054 in4 N/A 0.06193 in4 N/A 0.06573 in4 N/A 0.08597 in4
Torsional Properties (Cw) N/A 0.011 in6 N/A 0.029 in6 N/A 0.067 in6 N/A 0.084 in6 N/A 0.212 in6
Torsional Properties (Xo) N/A -0.872 in N/A -0.763 in N/A -0.661 in N/A -0.633 in N/A -0.519 in
Torsional Properties (Ro) N/A 1.204 in N/A 1.351 in N/A 1.619 in N/A 1.718 in N/A 2.282 in
Torsional Properties (ß) N/A 0.475 Beta N/A 0.681 Beta N/A 0.833 Beta N/A 0.864 Beta N/A 0.948 Beta
Notes for Allowable Screw Design Values N/A
  • Allowable screw connection capacities are based on Section E4 of the AISI S100-12 Specification.
  • When connecting materials of different steel thicknesses or tensile strengths, use the lowest values. Tabulated values assume two sheets of equal thickness are connected.
  • Screw shear and tension capacities were developed using published screw manufacturer data and evaluation reports available at the time of publication.
  • Screw capacities are based on Allowable Strength Design (ASD) and include a safety factor of 3.0.
  • When multiple fasteners are used, screws are assumed to have a center-to-center spacing of at least three times the nominal diameter (d).
  • Screws are assumed to have a center-of-screw to edge-of-steel dimension of at least 1-1/2 times the nominal diameter (d) of the screw.
  • Tension capacity is based on the lesser of pullout capacity in sheet closest to screw tip, or pullover capacity for sheet closest to screw head (using head diameter).
  • Screw capacities are governed by a conservative estimate of screw capacity, not by sheet steel failure.
  • For higher screw capacities, especially for screw strength, use specific screws from specific manufacturer. See manufacturer’s data for specific allowable values and installation instructions.
Construction Advantages N/A
  • High-strength steel combined with low-profile flange stiffening grooves and double offset web planking increases strength and provides greater limiting heights
  • Diamond-embossed web creates stiffness, reducing flange fade and screw spinout during drywall installation
  • Strong, lightweight stud and track cuts and handles easier than conventional flat steel studs
  • Flange grooves provide sight line for drywall alignment and aid in positioning screws at drywall joints to maintain the 3/8" edge requirement
  • Web and leg enhancements in ProTRAK® provide straight and rigid legs, making it the best choice for framing walls, headers, soffits, and bulkheads
Design Advantages N/A
  • Designed to meet the additional strength requirements of today's building codes: IBC 2015, AISI (S100), ICC-ES AC86 (2015)
  • Smart Edge™ Technology is an enhancement for producing easier-to-handle steel that reduces the risk of cuts and scrapes
  • UL Classified and listed in over 50 designs, including U419, V438, and chase wall assemblies
  • Exceptional sound performance in over 30 tested sound assemblies
  • Can contribute LEED® points in LEED v4 or LEED 2009. EPD and HPD verifications also available.
  • National availability
Addition Information N/A ProSTUD®, in fact, is just one example of how ClarkDietrich® can reinforce your efforts to design and build more intelligently. Yes, we're known as a manufacturer of extensively tested, code-compliant steel framing products, but we offer so much more. Our products perform as a system. We support a range of efforts for smarter installation and design.

We provide the expertise of a versatile engineering services team. And we do it all on a nationwide scale.

We've put together an incredible array of resources to help you be successful on any project, regardless of size or complexity. Within this catalog you'll discover the multiple advantages ProSTUD® has to offer, as well as detailed information on the product lineup, limiting heights, sound and fire assemblies, and more.

Ultimately, your choice of ProSTUD® doesn't come down to the integrity of the product alone, or even its ease of use. You're also looking to the strength of the company that stands behind it. Count on the expertise, services and full support of ClarkDietrich® today-and far into the future.
Note N/A
  • Calculated properties are based on AISI S100-12, North American Specification for Design of Cold-Formed Steel Structural Members and AISI S220-15, North American Standard for Cold-Formed Steel Framing-Nonstructural Members.
  • Effective properties incorporate the strength increase from the cold work of forming as applicable per AISI A7.2.
  • Tabulated gross properties, including torsional properties, are based on full-unreduced cross section of the studs, away from punch outs.
  • Tabulated gross properties, including torsional properties, are based on full-unreduced cross section of the tracks.
  • For deflection calculations, use the effective moment of inertia.
  • Allowable moment includes cold work of forming.
  • Allowable moment is taken as the lowest value based on local or distortional buckling. Distortional buckling strength is based on a k-phi = 0.
  • Web depth for track sections is equal to the nominal height plus two times the design thickness plus the bend radius. Hems on nonstructural track sections are ignored.