Earthbound SlackJack: a seismic, snow and wind load holdown system for wood framed structures, Intact Structural Supply.

Posting Calculator Notes: Canadian Use Only!
  1. Calculations based on CSA 086-01.
  2. Joist on Wall calculates member height = Wall Height minus given joist height and minus 4.5 inches for horizontal plates.
  3. Joist Hanging calculates member height = Wall Height minus 4.5 inches for horizontal plates. Also known as “balloon or platform” framing.
  4. Perpendicular to Grain Compression: DF = 1015 psi, HF = 667 psi, SPF = 769.
  5. Refer to CSA 086-01 : 5.3.1a.
  6. Load duration factor: KD
Stud/Plate
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Posting Grade
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Select Struc.
No. 1 / No. 2
No. 3 / Stud
Joist Condition
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Joist on Wall
Joist Hanging
Posting Options
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Bridge Posting
Joist Height
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inches
Floor Height
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ft. in.
Load Duration Factor
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Compression Load
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Input load in pounds
     
 Valid load range > 1 and < 88950
 Numeric values only!
Comments/Questions
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