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Steel Rib Supports

type 1-2 piece horseshoe
type 2-4 piece horseshoe
type 3-4 piece horseshoe
type 4-3 piece horseshoe
type 1-2 piece horseshoe
type 2-4 piece horseshoe
type 3-4 piece horseshoe
type 4-3 piece horseshoe

Steel Rib Supports

JENNMAR Specialty Products can bend I, WF, H sections ranging from 4" to 27" in depth (JENNMAR Specialty Products has formed W14 x 287 lb ft. with 2" flanges). Curvatures range from a minimum radius of 10 times the beam depth for 4" and 6" sections to 14 times the depth of section for larger beams. While JENNMAR Specialty Products has worked with 30' sections, it is recommended the sections not exceed 22'. JENNMAR Specialty Products  also recommends against the use of lighter-weight sections when the radius of curvature is less than 25 times the depth of section.
JENNMAR Specialty Products also fabricates straight beams, forepoling sheets, steel lagging, tie rods, foot plates and pipe spacers.

Accessories Used with Ribs

Butt Joint

• Butt plate height: rib depth plus 1"
• Width: flange width plus 1"
• Thickness: 4" and 5" sections — 3/8"
–– 6" sections — 1/2"
–– 8" sections — 5/8"
–– 10" sections — 3/4"
–– 12" sections — 1"
• Bolt size (A325) and quantity:
–– 4" sections: (2) 3/4" dia
–– 5" and 6" sections: (2) 1" dia
–– 8" and 10" sections: (4) 1" dia
–– 12" sections: (6) 1" dia
The above are for normal loading conditions. For extreme conditions, a full-moment strength joint may be required.

Foot Plate

• 4" sections: 1/2" x 7" x 7"
• 5" sections: 5/8" x 9" x 9"
• 6" sections: 5/8" x 9" x 9"
• 8" sections: 3/4" x 12" x 12"
• 10" sections: 1" x 14" x 14"
• 12" sections: 1-1/4" x 16" x 16"

Tie Rods

• A529 rod stock with 4" N.C. thread each end
• Length = rib spacing + 6"
• With 4" and 6" sections: 3/4" dia.
• With 8" and 10" sections: 3/4" dia.
• With 12" and above: structural spreaders are recommended

Pipe Spacers

• Schedule 40 pipe stock
• Length = rib spacing — web thickness
• With 3/4" dia. tie rods: 2" dia.


 

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