Safety Load & Engineering
Calculation System
Certified field calculations for safe working loads, sling angle tensions, and safety factors with multi-unit input synchronization.
Calculator
Enter parameters to compute results.
Anchor / Bow Shackle SWL
Formula: SWL (T) = D² × 8 (where D is in inches)
Wire Rope Sling SWL
Formula: SWL (T) = D² × 8 (D in inches) or D² × 12.4 (D in mm for kg)
Grade 80 Chain Sling SWL
Formula: SWL (T) = D² × 0.032 (where D is in mm)
Synthetic Webbing Sling SWL
Formula: SWL (T) = Width in inches × 1.0 Tonne/inch
Forged Eye Bolt SWL
Formula: SWL (T) = D² × 5 (Direct Vertical Pull, D in inches)
2-Leg Sling Angle & Tension
Formula: Leg Tension = (Total Load ÷ 2) ÷ sin(θ)
Load Unit Converter
Convert seamlessly between Tonnes, Kilograms, Pounds, and Kilonewtons.
Required Capacity by Safety Factor
Formula: Required Capacity = Working Load × Safety Factor
Risk Score Matrix
Formula: Risk Score = Likelihood × Severity
PPE Matrix Recommendation
Hazard Category to Protective Equipment Guide
Man-Hours & Safety Incident Frequency
Calculate total exposure man-hours and LTIFR / Incident Frequency Rates.
Fire Extinguisher Planning
Occupancy risk level to required fire extinguishers calculation.
IP Ingress Protection Decoder
Determine solid particle and liquid protection classification.
Rigging Calculation Practice
Test and sharpen your on-site engineering calculation skills with worked problem sets.
Practice Scorecard
Complete the calculations above to validate your rigging engineering competencies.
Calculation Session Log
Audit trail of all calculations performed in this session. Print or export for field documentation.
| Timestamp | Tool / Formula | Primary Output | Secondary Units | Applied Rule |
|---|---|---|---|---|
| No calculations logged yet. Click "Save to Log" in any calculator to track operations. | ||||