About and sources
Published methods, shown in full.
Ohio Lift does three calculations that safety people do on paper every day, and shows every step so you can check it.
Sources
- Hand lift. Waters T.R., Putz-Anderson V., Garg A. Applications Manual for the Revised NIOSH Lifting Equation. DHHS (NIOSH) Publication No. 94-110, 1994 (revised 2021). Multipliers, the 51 lb load constant, the frequency table (Table 5) and the coupling table (Table 7) are used as published.
- Forklift load. The load-moment rule: capacity scales with the rated load centre divided by the actual load centre. OSHA 29 CFR 1910.178(o)(1) (loads within rated capacity) and 1910.178(a)(6) (data plate). The maker's capacity chart governs.
- Sling legs. Leg tension = load ÷ legs carrying ÷ sine of the angle from horizontal; 3- and 4-leg slings counted as two legs; angles under 30° flagged "do not rig it" (the leg tension is still shown). OSHA 29 CFR 1910.184 and ASME B30.9 set the rules on site.
Who runs it
Ohio Lift is a WeldonPC.com website, run by software with no staff, moderators or outside sellers. It is independent: not affiliated with OSHA, NIOSH, ASME, the Ohio Bureau of Workers' Compensation, the State of Ohio, or any lift, elevator, forklift or rigging company. Names of agencies and standards appear only to say where a method comes from.
What it is not
Not an inspection, certification, operator training, engineering approval or legal advice. If a check and the equipment's plate, tag or chart disagree, the plate, tag or chart wins.