Colour-coded round slings hanging from shackles on a beam in a rigging loft

Lifting calculators

Rigging, ground and restraint, calculated live

Three calculators that cover the load path from the hook to the ground and onto the trailer. Results update as you type and print on A4.

Open sling calculator Calculator dashboard

Sling Tension Calculator

Leg tension, sling length and rigging gear selection for 17 arrangements: single-leg, two-leg, four-leg, spreader-beam and tailing lifts, with an optional padeye-to-shackle fit check.

17 hitch and bridle arrangements
Unequal legs and offset centre of gravity
Sling, shackle and hook selection
Padeye-to-shackle fit check against 7 shackle ranges
Two arrangements free to use

Open sling tension Sling angles explained

Spreader beam lifting a horizontal pressure vessel, signaller standing clear

Wooden Mat (Cribbage) Calculator

Outrigger load, ground bearing pressure and timber mat size for mobile cranes, from a database of crane models and presumptive soil bearing values.

Crane database with outrigger spreads
Presumptive bearing values by soil type
Mat size and spread of load
Field guide for identifying soils

Open crane mat check Ground bearing explained

Crane outrigger float resting on a steel crane mat

Lashing & Load Securing Calculator

Number and type of lashings for road transport to BS EN 12195-1 and tie-down count rules: friction, forward, rearward and sideways restraint, equipment selection and a pre-trip checklist.