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
162PDT125-33
ProTRAK® 0.142 Square Inch (in²) Area Drywall Track 		ProSTUD® Drywall Tracks
250PDT125-33
ProTRAK® 0.173 Square Inch (in²) Area Drywall Track 		ProSTUD® Drywall Tracks
362PDT125-33
ProTRAK® 0.212 Square Inch (in²) Area Drywall Track 		ProSTUD® Drywall Tracks
400PDT125-33
ProTRAK® 0.225 Square Inch (in²) Area Drywall Track 		ProSTUD® Drywall Tracks
600PDT125-33
ProTRAK® 0.294 Square Inch (in²) Area Drywall Track
Description N/A
Brands N/A A-1 Alloys ClarkDietrich® ProTRAK®
Design Thickness N/A 0.0346 in
Tensile Strength Fy N/A 33 ksi
Area N/A 0.142 in² N/A 0.173 in² N/A 0.212 in² N/A 0.225 in² N/A 0.294 in²
Weight N/A 0.48 lb/ft N/A 0.59 lb/ft N/A 0.72 lb/ft N/A 0.77 lb/ft N/A 1.00 lb/ft
Gross Section Properties (lx) N/A 0.075 in4 N/A 0.188 in4 N/A 0.432 in4 N/A 0.542 in4 N/A 1.418 in4
Gross Section Properties (Rx) N/A 0.723 in N/A 1.043 in N/A 1.429 in N/A 1.554 in N/A 2.197 in
Gross Section Properties (ly) N/A 0.024 in4 N/A 0.027 in4 N/A 0.030 in4 N/A 0.031 in4 N/A 0.034 in4
Gross Section Properties (Ry) N/A 0.409 in N/A 0.397 in N/A 0.377 in N/A 0.371 in N/A 0.339 in
Effective Section Properties at Tensile Strength (Fy) (Ae) N/A 0.095 in² N/A 0.102 in² N/A 0.105 in² N/A 0.106 in² N/A 0.109 in²
Effective Section Properties at Tensile Strength (Fy) (lx) N/A 0.063 in4 N/A 0.160 in4 N/A 0.375 in4 N/A 0.473 in4 N/A 1.237 in4
Effective Section Properties at Tensile Strength (Fy) (Sx) N/A 0.056 in³ N/A 0.100 in³ N/A 0.170 in³ N/A 0.197 in³ N/A 0.287 in³
Effective Section Properties at Tensile Strength (Fy) (Ma) N/A 1104 in·lb N/A 1972 in·lb N/A 3358 in·lb N/A 3887 in·lb N/A 5681 in·lb
Effective Section Properties at Tensile Strength (Fy) (Vag) N/A 677 lb N/A 1024 lb N/A 1024 lb N/A 931 lb N/A 619 lb
Torsional Properties (Jx1000) N/A 0.05683 in4 N/A 0.06891 in4 N/A 0.08444 in4 N/A 0.08962 in4 N/A 0.11723 in4
Torsional Properties (Cw) N/A 0.012 in6 N/A 0.032 in6 N/A 0.074 in6 N/A 0.093 in6 N/A 0.234 in6
Torsional Properties (Xo) N/A -0.870 in N/A -0.762 in N/A -0.659 in N/A -0.632 in N/A -0.517 in
Torsional Properties (Ro) N/A 1.203 in N/A 1.351 in N/A 1.618 in N/A 1.718 in N/A 2.282 in
Torsional Properties (ß) N/A 0.477 Beta N/A 0.682 Beta N/A 0.834 Beta N/A 0.865 Beta N/A 0.949 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.