Jobsite Calculators
Platform Capacity
Counterweights
Voltage Drop
Job Site Calculators
Choose a calculator below. You can print results from inside each tool.
Platform Capacity Calculator
Values use Sky Climber tables (UL1322) and Work Cage catalog data. Print-ready summary included.
Results
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Hoist Limit
β lb(# hoists Γ hoist WLL) β dead load
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Platform Rating (table)
β lbPer UL1322 / Catalog table
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Deck Panel Rating
β lbMax 120 lb/ft Γ β ft
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Dead Load
β lbPlatform self-weight + accessories
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Planned Live Load
β lb
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Utilization
ββ
What limits your capacity: β
β
Important: Distribute loads. Use only listed configurations. Final setup must be reviewed by a qualified person per OSHA/ANSI and Sky Climber manuals.
Counterweight Calculator
For topside outrigger beams. OSHA safety factors. Calculates required CW per beam (stirrup) and shows fulcrum working load for mounting on dollies or scaffold frames.
Results
| Rating Mode | Required CW (lb) | CW (qty) |
|---|---|---|
| Personnel (4:1) | β | β |
| Material (2.5:1) | β | β |
β
Important: Keep the outreach-to-backspan ratio β₯ 1.5 : 1. When using 1500 lb hoists, outreach must not exceed 3.5 ft on a standard beam and 5 ft with a cable truss. Follow the manufacturerβs manual or approved drawings and use under the supervision of a competent person.
Voltage Drop Calculator
Estimate running voltage at the platform. Assumes SOOW (stranded copper) cords. For planning onlyβverify on site.
Results
*1-phase uses 2 Γ I Γ R Γ L. 3-phase uses β3 Γ I Γ R Γ L. R is SOOW stranded copper resistance per foot for the selected AWG (β20 Β°C). Actual drop may be higher due to warm cords, connections, or older cables.