Each Chicago Clamp System® has been designed, and then rigorously tested by an independent engineering lab, to provide a product on which you can depend.
Joist Grip Framing Clamp System
Allowable Load (pounds) vs. Span a-h
|Tube Size (inches)||Load Type||Span (feet)|
|HSS 4" x 2" x 1/8"||concentrated||2,000||2,000||2,000||2,000||1,801||1,572||1,318||1,067|
|HSS 4" x 2" x 3/16"||concentrated||2,000||2,000||2,000||2,000||2,000||2,000||1,820||1,474|
Table Notes a-h
- Allowable concentrated load at middle of span. Allowable loads are net (weight of tube has been accounted for).
- Multiple loads, that are symmetrically placed and whose total equals the tabulated value, may be used.
- The reaction to each clamp bracket must be limited to a net value of the clamp’s charted capacity.
- Allowable loads have been limited to 2,000 lbs maximum.
- Allowable loads are based on 46 ksi minimum yield steel (A500, Gr. B), the AISC specification and a safety factor of 2.0.
- Loads in bold (1,067) are governed by applied-load deflection limit of Span / 240; (e.g., 0.50" for 10′ span).
- Tube’s 4" dimension is vertical. Span is horizontal.
- Tube weights: 4.75 lbs/ft for 1/8" wall, and 6.87 lbs/ft for 3/16" wall. Weights and thicknesses are nominal.
Tube Framing Clamp System
Live Load Capacity (pounds)
|Component Capacities||Download Positive||Uplift Negative|
|Allowable Load (pounds)|
|Joist Grip End Clamp||1,000||1,000|
|InLine End Clamp||1,000||1,000|
|Cross Support Bracket||1,000||–|