Structural Joist


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A joist is a horizontal structural member used in framing to span an open space, often between beams that subsequently transfer loads to vertical members. Studco® Structural joists are available in minimum G60 Galvanized coating, and manufactured in USA using high quality steel.

  • Available Leg Heights of 1-5/8″, 2″, 2-1/2″
  • Stud Depth and Web Widths available from 2-1/2″ – 16″
  • Custom sizes and lengths are available

Can I substitute specified products for Studco products?

Absolutely, our insistence on quality and extensive product testing provide substantial evidence that our products provide equal performance characteristics of alternative framing systems. Further information can be found on our Systems Conformance document.

Why choose Studco?

As an innovative and industry leading company, Studco provides quality products, solution-based engineering, and hands-on customer service. There are many reasons to choose Studco products for your project, here are some of the many benefits.

Where are Studco products manufactured and what materials are used for?

Studco products are manufactured in Webster, New York. Our products are made from premium quality Steel. They are manufactured within the strictest of tolerances and are structurally sound when installed in accordance with our Design Manual.

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Available Options

Product Code Product Information Width (mm) Design thickness Mils
SJ2-21233-G90 2-1/2" 33 Mils Structural Joist with 2" Flange 2-1/2" 0.0346 G60 33 Mils
SJ2-21233 2-1/2" 33 Mils Structural Joist with 2" Flange 2-1/2" 0.0346 G90 33 Mils
SJ2-21243-G90 2-1/2" 43 Mils Structural Joist with 2" Flange 2-1/2" 0.0451 G60 43 Mils
SJ2-21243 2-1/2" 43 Mils Structural Joist with 2" Flange 2-1/2" 0.0451 G90 43 Mils
SJ2-21254 2-1/2" 54 Mils Structural Joist with 2" Flange 2-1/2" 0.0566 G60 54 Mils
SJ2-21254-G90 2-1/2" 54 Mils Structural Joist with 2" Flange 2-1/2" 0.0566 G90 54 Mils
SJ2-21268 2-1/2" 68 Mils Structural Joist with 2" Flange 2-1/2" 0.0713 G60 68 Mils
SJ2-21268-G90 2-1/2" 68 Mils Structural Joist with 2" Flange 2-1/2" 0.0713 G90 68 Mils
SJ2-35833 3-5/8" 33 Mils Structural Joist with 2" Flange 3-5/8" 0.0346 G60 33 Mils
SJ2-35833-G90 3-5/8" 33 Mils Structural Joist with 2" Flange 3-5/8" 0.0346 G90 33 Mils
SJ2-35843 3-5/8" 43 Mils Structural Joist with 2" Flange 3-5/8" 0.0451 G60 43 Mils
SJ2-35843-G90 3-5/8" 43 Mils Structural Joist with 2" Flange 3-5/8" 0.0451 G90 43 Mils
SJ2.5-35843 3-5/8" 43 Mils Structural Joist with 2-1/2" Flange 3-5/8" 0.0451 G60 43 Mils
SJ2.5-35843-G90 3-5/8" 43 Mils Structural Joist with 2-1/2" Flange 3-5/8" 0.0451 G90 43 Mils
SJ2-35854 3-5/8" 54 Mils Structural Joist with 2" Flange 3-5/8" 0.0566 G60 54 Mils
SJ2-35854-G90 3-5/8" 54 Mils Structural Joist with 2" Flange 3-5/8" 0.0566 G90 54 Mils
SJ2.5-35854 3-5/8" 54 Mils Structural Joist with 2-1/2" Flange 3-5/8" 0.0566 G60 54 Mils
SJ2.5-35854-G90 3-5/8" 54 Mils Structural Joist with 2-1/2" Flange 3-5/8" 0.0566 G90 54 Mils
SJ2-35868 3-5/8" 68 Mils Structural Joist with 2" Flange 3-5/8" 0.0713 G60 68 Mils
SJ2-35868-G90 3-5/8" 68 Mils Structural Joist with 2" Flange 3-5/8" 0.0713 G90 68 Mils
SJ2.5-35868 3-5/8" 68 Mils Structural Joist with 2-1/2" Flange 3-5/8" 0.0713 G60 68 Mils
SJ2.5-35868-G90 3-5/8" 68 Mils Structural Joist with 2-1/2" Flange 3-5/8" 0.0713 G90 68 Mils
SJ2-35897 3-5/8" 97 Mils Structural Joist with 2" Flange 3-5/8" 0.1017 G60 97 Mils
SJ2-35897-G90 3-5/8" 97 Mils Structural Joist with 2" Flange 3-5/8" 0.1017 G90 97 Mils
SJ2.5-35897 3-5/8" 97 Mils Structural Joist with 2-1/2" Flange 3-5/8" 0.1017 G60 97 Mils
SJ2.5-35897-G90 3-5/8" 97 Mils Structural Joist with 2-1/2" Flange 3-5/8" 0.1017 G90 97 Mils
SJ2-433 4" 33 Mils Structural Joist with 2" Flange 4" 0.0346 G60 33 Mils
SJ2-433-G90 4" 33 Mils Structural Joist with 2" Flange 4" 0.0346 G90 33 Mils
SJ2-443 4" 43 Mils Structural Joist with 2" Flange 4" 0.0451 G60 43 Mils
SJ2-443-G90 4" 43 Mils Structural Joist with 2" Flange 4" 0.0451 G90 43 Mils
SJ2.5-443 4" 43 Mils Structural Joist with 2-1/2" Flange 4" 0.0451 G60 43 Mils
SJ2.5-443-G90 4" 43 Mils Structural Joist with 2-1/2" Flange 4" 0.0451 G90 43 Mils
SJ2-454 4" 54 Mils Structural Joist with 2" Flange 4" 0.0566 G60 54 Mils
SJ2-454-G90 4" 54 Mils Structural Joist with 2" Flange 4" 0.0566 G90 54 Mils
SJ2.5-454 4" 54 Mils Structural Joist with 2-1/2" Flange 4" 0.0566 G60 54 Mils
SJ2.5-454-G90 4" 54 Mils Structural Joist with 2-1/2" Flange 4" 0.0566 G90 54 Mils
SJ2-468 4" 68 Mils Structural Joist with 2" Flange 4" 0.0713 G60 68 Mils
SJ2-468-G90 4" 68 Mils Structural Joist with 2" Flange 4" 0.0713 G90 68 Mils
SJ2.5-468 4" 68 Mils Structural Joist with 2-1/2" Flange 4" 0.0713 G60 68 Mils
SJ2.5-468-G90 4" 68 Mils Structural Joist with 2-1/2" Flange 4" 0.0713 G60 68 Mils
SJ2-497 4" 97 Mils Structural Joist with 2" Flange 4" 0.1017 G90 97 Mils
SJ2-497-G90 4" 97 Mils Structural Joist with 2" Flange 4" 0.1017 G60 97 Mils
SJ2.5-497 4" 97 Mils Structural Joist with 2-1/2" Flange 4" 0.1017 G90 97 Mils
SJ2.5-497-G90 4" 97 Mils Structural Joist with 2-1/2" Flange 4" 0.1017 G60 97 Mils
SJ2-51233 5-1/2" 33 Mils Structural Joist with 2" Flange 5-1/2" 0.0346 G90 33 Mils
SJ2-51233-G90 5-1/2" 33 Mils Structural Joist with 2" Flange 5-1/2" 0.0346 G60 33 Mils
SJ2-51243 5-1/2" 43 Mils Structural Joist with 2" Flange 5-1/2" 0.0451 G90 43 Mils
SJ2-51243-G90 5-1/2" 43 Mils Structural Joist with 2" Flange 5-1/2" 0.0451 G60 43 Mils
SJ2.5-51243 5-1/2" 43 Mils Structural Joist with 2-1/2" Flange 5-1/2" 0.0451 G90 43 Mils
SJ2.5-51243-G90 5-1/2" 43 Mils Structural Joist with 2-1/2" Flange 5-1/2" 0.0451 G60 43 Mils
SJ2-51254 5-1/2" 54 Mils Structural Joist with 2" Flange 5-1/2" 0.0566 G60 54 Mils
SJ2-51254-G90 5-1/2" 54 Mils Structural Joist with 2" Flange 5-1/2" 0.0566 G90 54 Mils
SJ2.5-51254 5-1/2" 54 Mils Structural Joist with 2-1/2" Flange 5-1/2" 0.0566 G60 54 Mils
SJ3.5-51254-G90 5-1/2" 54 Mils Structural Joist with 2-1/2" Flange 5-1/2" 0.0566 G90 54 Mils
SJ2-51268 5-1/2" 68 Mils Structural Joist with 2" Flange 5-1/2" 0.0713 G60 68 Mils
SJ2-51268-G90 5-1/2" 68 Mils Structural Joist with 2" Flange 5-1/2" 0.0713 G90 68 Mils
SJ2.5-51268 5-1/2" 68 Mils Structural Joist with 2-1/2" Flange 5-1/2" 0.0713 G60 68 Mils
SJ2.5-51268-G90 5-1/2" 68 Mils Structural Joist with 2-1/2" Flange 5-1/2" 0.0713 G90 68 Mils
SJ2-51297 5-1/2" 97 Mils Structural Joist with 2" Flange 5-1/2" 0.1017 G60 97 Mils
SJ2-51297-G90 5-1/2" 97 Mils Structural Joist with 2" Flange 5-1/2" 0.1017 G90 97 Mils
SJ2.5-51297 5-1/2" 97 Mils Structural Joist with 2-1/2" Flange 5-1/2" 0.1017 G60 97 Mils
SJ2.5-51297-G90 5-1/2" 97 Mils Structural Joist with 2-1/2" Flange 5-1/2" 0.1017 G90 97 Mils
SJ2-633 6" 33 Mils Structural Joist with 2" Flange 6" 0.0346 G60 33 Mils
SJ2-633-G90 6" 33 Mils Structural Joist with 2" Flange 6" 0.0346 G90 33 Mils
SJ2-643 6" 43 Mils Structural Joist with 2" Flange 6" 0.0451 G60 43 Mils
SJ2-643-G90 6" 43 Mils Structural Joist with 2" Flange 6" 0.0451 G90 43 Mils
SJ2.5-643 6" 43 Mils Structural Joist with 2-1/2" Flange 6" 0.0451 G60 43 Mils
SJ2.5-643-G90 6" 43 Mils Structural Joist with 2-1/2" Flange 6" 0.0451 G90 43 Mils
SJ2-654 6" 54 Mils Structural Joist with 2" Flange 6" 0.0566 G60 54 Mils
SJ2-654-G90 6" 54 Mils Structural Joist with 2" Flange 6" 0.0566 G90 54 Mils
SJ2.5-654 6" 54 Mils Structural Joist with 2-1/2" Flange 6" 0.0566 G60 54 Mils
SJ2.5-654-G90 6" 54 Mils Structural Joist with 2-1/2" Flange 6" 0.0566 G90 54 Mils
SJ2-668 6" 68 Mils Structural Joist with 2" Flange 6" 0.0713 G60 68 Mils
SJ2-668-G90 6" 68 Mils Structural Joist with 2" Flange 6" 0.0713 G90 68 Mils
SJ2.5-668 6" 68 Mils Structural Joist with 2-1/2" Flange 6" 0.0713 G60 68 Mils
SJ2.5-668-G90 6" 68 Mils Structural Joist with 2-1/2" Flange 6" 0.0713 G90 68 Mils
SJ2-697 6" 97 Mils Structural Joist with 2" Flange 6" 0.1017 G60 97 Mils
SJ2-697-G90 6" 97 Mils Structural Joist with 2" Flange 6" 0.1017 G90 97 Mils
SJ2.5-697 6" 97 Mils Structural Joist with 2-1/2" Flange 6" 0.1017 G60 97 Mils
SJ2.5-697-G90 6" 97 Mils Structural Joist with 2-1/2" Flange 6" 0.1017 G90 97 Mils
SJ2-833 8" 33 Mils Structural Joist with 2" Flange 8" 0.0346 G60 33 Mils
SJ2-833-G90 8" 33 Mils Structural Joist with 2" Flange 8" 0.0346 G90 33 Mils
SJ2-843 8" 43 Mils Structural Joist with 2" Flange 8" 0.0451 G60 43 Mils
SJ2-843-G90 8" 43 Mils Structural Joist with 2" Flange 8" 0.0451 G90 43 Mils
SJ2.5-843 8" 43 Mils Structural Joist with 2-1/2" Flange 8" 0.0451 G60 43 Mils
SJ2.5-843-G90 8" 43 Mils Structural Joist with 2-1/2" Flange 8" 0.0451 G90 43 Mils
SJ2-854 8" 54 Mils Structural Joist with 2" Flange 8" 0.0566 G60 54 Mils
SJ2-854-G90 8" 54 Mils Structural Joist with 2" Flange 8" 0.0566 G90 54 Mils
SJ2.5-854 8" 54 Mils Structural Joist with 2-1/2" Flange 8" 0.0566 G60 54 Mils
SJ2.5-854-G90 8" 54 Mils Structural Joist with 2-1/2" Flange 8" 0.0566 G90 54 Mils
SJ2-868 8" 68 Mils Structural Joist with 2" Flange 8" 0.0713 G60 68 Mils
SJ2-868-G90 8" 68 Mils Structural Joist with 2" Flange 8" 0.0713 G90 68 Mils
SJ2.5-868 8" 68 Mils Structural Joist with 2-1/2" Flange 8" 0.0713 G60 68 Mils
SJ2.5-868-G90 8" 68 Mils Structural Joist with 2-1/2" Flange 8" 0.0713 G90 68 Mils
SJ2-897 8" 97 Mils Structural Joist with 2" Flange 8" 0.1017 G60 97 Mils
SJ2-897-G90 8" 97 Mils Structural Joist with 2" Flange 8" 0.1017 G90 97 Mils
SJ2.5-897 8" 97 Mils Structural Joist with 2-1/2" Flange 8" 0.1017 G60 97 Mils
SJ2.5-897-G90 8" 97 Mils Structural Joist with 2-1/2" Flange 8" 0.1017 G90 97 Mils
SJ2-1043 10" 43 Mils Structural Joist with 2" Flange 10" 0.0451 G60 43 Mils
SJ2-1043-G90 10" 43 Mils Structural Joist with 2" Flange 10" 0.0451 G90 43 Mils
SJ2.5-1043 10" 43 Mils Structural Joist with 2-1/2" Flange 10" 0.0451 G60 43 Mils
SJ2.5-1043-G90 10" 43 Mils Structural Joist with 2-1/2" Flange 10" 0.0451 G90 43 Mils
SJ2-1054 10" 54 Mils Structural Joist with 2" Flange 10" 0.0566 G60 54 Mils
SJ2-1054-G90 10" 54 Mils Structural Joist with 2" Flange 10" 0.0566 G90 54 Mils
SJ2.5-1054 10" 54 Mils Structural Joist with 2-1/2" Flange 10" 0.0566 G60 54 Mils
SJ2.5-1054-G90 10" 54 Mils Structural Joist with 2-1/2" Flange 10" 0.0566 G90 54 Mils
SJ2-1068 10" 68 Mils Structural Joist with 2" Flange 10" 0.0713 G60 68 Mils
SJ2-1068-G90 10" 68 Mils Structural Joist with 2" Flange 10" 0.0713 G90 68 Mils
SJ2.5-1068 10" 68 Mils Structural Joist with 2-1/2" Flange 10" 0.0713 G60 68 Mils
SJ2.5-1068-G90 10" 68 Mils Structural Joist with 2-1/2" Flange 10" 0.0713 G90 68 Mils
SJ2-1097 10" 97 Mils Structural Joist with 2" Flange 10" 0.1017 G60 97 Mils
SJ2-1097-G90 10" 97 Mils Structural Joist with 2" Flange 10" 0.1017 G90 97 Mils
SJ2.5-1097 10" 97 Mils Structural Joist with 2-1/2" Flange 10" 0.1017 G60 97 Mils
SJ2.5-1097-G90 10" 97 Mils Structural Joist with 2-1/2" Flange 10" 0.1017 G90 97 Mils
SJ2-1243 12" 43 Mils Structural Joist with 2" Flange 12" 0.0451 G60 43 Mils
SJ2-1243-G90 12" 43 Mils Structural Joist with 2" Flange 12" 0.0451 G90 43 Mils
SJ2.5-1243 12" 43 Mils Structural Joist with 2-1/2" Flange 12" 0.0451 G60 43 Mils
SJ2.5-1243-G90 12" 43 Mils Structural Joist with 2-1/2" Flange 12" 0.0451 G90 43 Mils
SJ2-1254 12" 54 Mils Structural Joist with 2" Flange 12" 0.0566 54 Mils
SJ2-1254-G90 12" 54 Mils Structural Joist with 2" Flange 12" 0.0566 54 Mils
SJ2.5-1254 12" 54 Mils Structural Joist with 2-1/2" Flange 12" 0.0566 54 Mils
SJ2.5-1254-G90 12" 54 Mils Structural Joist with 2-1/2" Flange 12" 0.0566 54 Mils
SJ2-1268 12" 68 Mils Structural Joist with 2" Flange 12" 0.0713 68 Mils
SJ2-1268-G90 12" 68 Mils Structural Joist with 2" Flange 12" 0.0713 68 Mils
SJ2.5-1268 12" 68 Mils Structural Joist with 2-1/2" Flange 12" 0.0713 68 Mils
SJ2.5-1268-G90 12" 68 Mils Structural Joist with 2-1/2" Flange 12" 0.0713 68 Mils
SJ2-1297 12" 97 Mils Structural Joist with 2" Flange 12" 0.1017 97 Mils
SJ2-1297-G90 12" 97 Mils Structural Joist with 2" Flange 12" 0.1017 97 Mils
SJ2.5-1297 12" 97 Mils Structural Joist with 2-1/2" Flange 12" 0.1017 97 Mils
SJ2.5-1297-G90 12" 97 Mils Structural Joist with 2-1/2" Flange 12" 0.1017 97 Mils
SJ2-1443 14" 43 Mils Structural Joist with 2" Flange 14" 0.0451 43 Mils
SJ2-1443-G90 14" 43 Mils Structural Joist with 2" Flange 14" 0.0451 43 Mils
SJ2.5-1443 14" 43 Mils Structural Joist with 2-1/2" Flange 14" 0.0451 43 Mils
SJ2.5-1443-G90 14" 43 Mils Structural Joist with 2-1/2" Flange 14" 0.0451 43 Mils
SJ2-1454 14" 54 Mils Structural Joist with 2" Flange 14" 0.0566 54 Mils
SJ2-1454-G90 14" 54 Mils Structural Joist with 2" Flange 14" 0.0566 54 Mils
SJ2.5-1454 14" 54 Mils Structural Joist with 2-1/2" Flange 14" 0.0566 54 Mils
SJ2.5-1454-G90 14" 54 Mils Structural Joist with 2-1/2" Flange 14" 0.0566 54 Mils
SJ2-1468 14" 68 Mils Structural Joist with 2" Flange 14" 0.0713 68 Mils
SJ2-1468-G90 14" 68 Mils Structural Joist with 2" Flange 14" 0.0713 68 Mils
SJ2.5-1468 14" 68 Mils Structural Joist with 2-1/2" Flange 14" 0.0713 68 Mils
SJ2.5-1468-G90 14" 68 Mils Structural Joist with 2-1/2" Flange 14" 0.0713 68 Mils
SJ2-1497 14" 97 Mils Structural Joist with 2" Flange 14" 0.1017 97 Mils
SJ2-1497-G90 14" 97 Mils Structural Joist with 2" Flange 14" 0.1017 97 Mils
SJ2.5-1497 14" 97 Mils Structural Joist with 2-1/2" Flange 14" 0.1017 97 Mils
SJ2.5-1497-G90 14" 97 Mils Structural Joist with 2-1/2" Flange 14" 0.1017 97 Mils
SJ2-1643 16" 43 Mils Structural Joist with 2" Flange 16" 0.0451 43 Mils
SJ2-1643-G90 16" 43 Mils Structural Joist with 2" Flange 16" 0.0451 43 Mils
SJ2.5-1643 16" 43 Mils Structural Joist with 2-1/2" Flange 16" 0.0451 43 Mils
SJ2.5-1643-G90 16" 43 Mils Structural Joist with 2-1/2" Flange 16" 0.0451 43 Mils
SJ2-1654 16" 54 Mils Structural Joist with 2" Flange 16" 0.0566 54 Mils
SJ2-1654-G90 16" 54 Mils Structural Joist with 2" Flange 16" 0.0566 54 Mils
SJ2.5-1654 16" 54 Mils Structural Joist with 2-1/2" Flange 16" 0.0566 54 Mils
SJ2.5-1654-G90 16" 54 Mils Structural Joist with 2-1/2" Flange 16" 0.0566 54 Mils
SJ2-1668 16" 68 Mils Structural Joist with 2" Flange 16" 0.0713 68 Mils
SJ2-1668-G90 16" 68 Mils Structural Joist with 2" Flange 16" 0.0713 68 Mils
SJ2.5-1668 16" 68 Mils Structural Joist with 2-1/2" Flange 16" 0.0713 68 Mils
SJ2.5-1668-G90 16" 68 Mils Structural Joist with 2-1/2" Flange 16" 0.0713 68 Mils
SJ2-1697 16" 97 Mils Structural Joist with 2" Flange 16" 0.1017 97 Mils
SJ2-1697-G90 16" 97 Mils Structural Joist with 2" Flange 16" 0.1017 97 Mils
SJ2.5-1697 16" 97 Mils Structural Joist with 2-1/2" Flange 16" 0.1017 97 Mils
SJ2.5-1697-G90 16" 97 Mils Structural Joist with 2-1/2" Flange 16" 0.1017 97 Mils

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