Field Calculation Aid — Verify Critical Results

Use LoadCalc at your own risk. Independently verify critical inputs, geometry, calculations, load paths, and equipment ratings before use. LoadCalc is not a substitute for qualified rigging knowledge, required engineering, current manufacturer data, applicable standards, or site procedures.

Reference library

Equipment Reference

Compare a calculated demand with stored reference WLL values. This page compares demand against stored reference values; verify the exact equipment and manufacturer data before use.

Manufacturer data is the source of truth

Ratings vary by product, construction, end fitting, hitch, angle, material, and manufacturer. Compare calculated demand directly to the WLL on the exact tag/chart for the equipment being used. Do not divide demand by a design factor.

Use the actual calculated sling/hardware demand here, not the total load unless that component truly carries the total load.

1/4" Wire RopeBelow stored reference

6x19 IWRC

Vertical WLL

1,300 lbs

Choker WLL

920 lbs

Vertical WLL ÷ target demand

0.26×

Comparison ratio only; not a design factor or substitute for the exact manufacturer rating.

5/16" Wire RopeBelow stored reference

6x19 IWRC

Vertical WLL

2,800 lbs

Choker WLL

2,200 lbs

Vertical WLL ÷ target demand

0.56×

Comparison ratio only; not a design factor or substitute for the exact manufacturer rating.

3/8" Wire RopeBelow stored reference

6x19 IWRC

Vertical WLL

3,800 lbs

Choker WLL

3,200 lbs

Vertical WLL ÷ target demand

0.76×

Comparison ratio only; not a design factor or substitute for the exact manufacturer rating.

1/2" Wire RopeReference row

6x19 IWRC

Vertical WLL

6,400 lbs

Choker WLL

4,600 lbs

Vertical WLL ÷ target demand

1.28×

Comparison ratio only; not a design factor or substitute for the exact manufacturer rating.

5/8" Wire RopeReference row

6x19 IWRC

Vertical WLL

10,000 lbs

Choker WLL

8,200 lbs

Vertical WLL ÷ target demand

2.00×

Comparison ratio only; not a design factor or substitute for the exact manufacturer rating.

3/4" Wire RopeReference row

6x19 IWRC

Vertical WLL

15,200 lbs

Choker WLL

11,200 lbs

Vertical WLL ÷ target demand

3.04×

Comparison ratio only; not a design factor or substitute for the exact manufacturer rating.

7/8" Wire RopeReference row

6x19 IWRC

Vertical WLL

19,600 lbs

Choker WLL

14,400 lbs

Vertical WLL ÷ target demand

3.92×

Comparison ratio only; not a design factor or substitute for the exact manufacturer rating.

1" Wire RopeReference row

6x19 IWRC

Vertical WLL

24,000 lbs

Choker WLL

18,200 lbs

Vertical WLL ÷ target demand

4.80×

Comparison ratio only; not a design factor or substitute for the exact manufacturer rating.

Reference rows are for comparison. Verify the exact manufacturer, model, tag, hitch, angle, inspection status, and applicable instructions before use.