Design Specifications
Decon® Studrails® are composed of special studs either studwelded or mechanically crimped to a steel base rail using a patented procedure.
To develop the full yield strength of the studs in tension, the chart shows the standard dimensions which are necessary.
| D in (mm) | x-sect. area in2 (mm2) | Dh in (mm) | th in (mm) | br in (mm) | tr in (mm) | min. OAH in (mm) |
| 3/8 (9.5) | 0.110 (71) | 1.19 (30.1) | 0.21 (5.3) | 1 (25.4) | 3/16 (4.8) | 4 (100) |
| 1/2 (12.7) | 0.196 (127) | 1.58 (40.2) | 0.28 (7.1) | 1-1/4 (31.8) | 1/4 (6.5)) | 4 (100) |
| 5/8 (15.9) | 0.307 (199) | 1.98 (50.2) | 0.35 (8.9) | 1-3/4 (44.5) | 5/16 (7.9) | 5 (125) |
| 3/4 (19.1) | 0.442 (287) | 2.37 (60.2) | 0.42 (10.7) | 2 (50.8) | 3/8 (9.5) | 5 (125) |
Specifications for Decon® Studrails®
The shear studs used in the fabrication of Studrails® are Low Carbon Steel, C1015 to C1018 in accordance with ASTM-A108. The strength and ductility requirements are:
Yield strength: 50,000 psi minimum (345 MPa)
Tensile strength: 60,000 psi minimum (414 MPa)
Elongation in 2 in.: 20% minimum
Reduction of Area: 50% minimum
The rails used in Studrails® are Low Carbon Steel Type 44W with the following strength and ductility requirements:
Yield strength: 44,000 psi minimum (300 MPa)
Tensile strength: 65,000 psi minimum (450 MPa)
Elongation in 8 in.: 20% minimum
The studs are welded in accordance with American Welding Society (AWS) D1.1 and CSA Standard W59 as certified by the Canadian Welding Bureau.
Drawing DEC1300 shows the size of studs that are available. The overall height of the stud is dependent on the slab thickness and the required concrete cover.
Studrails® should be specified in the project documents under "Section 3200 – Concrete Reinforcement". The engineer should use wording similar to the following:
Shear Reinforcement at the slab column connection as shown on the drawings and details, shall be Studrails® as manufactured by Decon®. The complete and finished Studrail® shall be ICC ES evaluated and welding has to take place in an ICC ES approved and audited facility. Studrails® shall conform to the latest update of ASTM A1044.
Studrails Quick Links
Studrails® in the News
Decon® Studrails® featured in American Architectural Review. To see this clip, click here.
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Phone: (866) DECON-US