RigMaster vs Calc Tools

RigMaster is the rigging calculator built for working riggers, crane operators, and signal persons. LIFT PLAN PDF (PRO) • Turn any calculation into a one-page lift plan: diagram, inputs, results • Room for notes and three signature lines — prepared by, signature, date • Share it straight to the supervisor from the toolbar IPAD & UNITS • Universal app — two-column layout on iPad, any orientation • Metric or imperial — kg and metres or lb and feet, switch any time • Live sling diagram with the angle and tension on every leg FREE CALCULATORS • Sling Tension — 2-leg picks by angle, or by sling length & height (the way you actually measure) • Hitch Capacity — vertical, choker, and basket capacity from YOUR sling's tag rating • Angle Reference — the tension multiplier table, always in your pocket PRO CALCULATORS • 3 & 4-leg bridles with rigid/flexible load sharing • Unequal Legs / CoG Offset — tension per leg when the center of gravity isn't centered • Load Weight Estimator — steel, concrete, aluminum and more, by shape and dimensions • Ad-free Built on first-principles trigonometry with warnings at 45° and hard alerts below 30°, following standard rigging practice (ASME B30.9 guidance). RigMaster is an estimation aid for qualified riggers. Always follow the sling tag, the load chart, and your site's rigging plan. COMMON QUESTIONS Does it work offline? Yes. Every calculation runs on the phone. No signal needed on site. Do I need an account? No. There is no login and no sign-up. What is free? Sling Tension, Hitch Capacity and the Angle Reference table are free. Pro adds 3 and 4-leg bridles, unequal legs with CoG offset, the load weight estimator and the lift plan PDF, and removes the ads. Metric or imperial? Both, switchable at any time — kg and metres, or lb and feet. Can I hand the result to the supervisor? Yes. Pro turns any calculation into a one-page lift plan PDF: diagram, inputs, results, notes and three signature lines. Does it replace the sling tag or the load chart? No. It is an estimation aid for qualified riggers. The sling tag, the load chart and your site's rigging plan always come first. Does it work on iPad? Yes. Universal app, two-column layout on iPad, any orientation. Terms of Use: https://ghapps1.wordpress.com/terms-condition/ Privacy Policy: https://ghapps1.wordpress.com/privacy-policy/

A practical construction calculator for carpenters, builders and contractors. Work out concrete quantities, stair dimensions and baluster spacing from the measurements you already have. Whether you're framing a wall, planning a deck or estimating a concrete pour, Calc Tools brings 16 everyday calculators together on your iPhone and iPad. Choose a tool, enter your dimensions and get a clear result with a diagram to guide your measurements. PLAN YOUR NEXT JOB • Concrete: estimate slab volume or concrete for round posts, holes and circular pads, including a waste allowance. • Stairs: find riser and tread counts, riser height, total run, pitch and an overall stringer-span estimate. • Balusters: work out a count and equal clear gaps from your span, baluster width and maximum gap. • Decking: estimate board count and total purchase length with an allowance for waste. • Gravel, soil and asphalt: estimate volume for paths, beds and other projects. Use your chosen density to calculate gravel or asphalt weight. CHECK DIMENSIONS AND LAYOUTS • Check Square: find the diagonal, area and perimeter for a rectangular layout. • Right Triangle: solve missing sides and angles from the measurements you know. • Pitch: calculate slope and angle from rise and run. • Equal Spacing: lay out evenly spaced points by count or target spacing. • Raked Wall: calculate full wall heights at stud positions from heights or pitch. • Running Dimensions: turn a starting measurement and interval into a list of layout marks. • Dumpy Level: calculate reduced levels from benchmark and staff readings. • Area: calculate rectangular area with an optional waste allowance. METRIC AND IMPERIAL MEASUREMENTS Work in millimeters, meters, inches, or feet and inches. Enter mixed fractions and choose inch display accuracy from 1/2 to 1/64. Convert your entered measurements between units while retaining their full calculation precision. READY WHEN YOU NEED IT Calculations work offline. Find a tool with search and categories, keep favorites within reach, and save named calculations with their inputs and results. Reopen a saved calculation or share the result with your crew. All 16 tools are included. No account, subscriptions or in-app purchases. Light and dark appearances keep the interface clear on iPhone and iPad. Results are estimates. Verify dimensions, material allowances and local building requirements before use. Raked-wall heights and stringer spans require separate cutting and fitting allowances.