Below the Hook

Posted by Walker May in #YHSafetyTips, Feb 07, 2018

Lifting Device Compliance

The American Society of Mechanical Engineers (ASME) has developed standards that apply specifically to below-the-hook lifting devices. ASME B30.20 and ASME BTH-1 are the most important standards for the design and marking of below-the-hook lifting devices.

ASME B30.20

Provides detailed standards on the classification, marking, construction, installation, inspection testing, maintenance, and operation of below-the-hook lifting devices.


Provides detailed information on the design criteria of below-the-hook lifting devices.

Lifting & Rigging Inspections, Free Consultation

How do I know if my lifting devices are OSHA compliant?

Educating yourself about these ASME requirements is a great start to ensuring below-the-hook lifting device compliance at your facility. It is also important to select a qualified inspector and supplier such as YorkHoist for your below-the-hook lifting device needs. The following items are required on an OSHA Compliant lifting device.

Identification, Tags, & Rated Load Marking

Everything listed below should be clearly marked on your BTH devices

  • Manufacturer's name and address
  • Unique serial number
  • Lifter weight, if over 100 lbs (45 kg)
  • Cold current amps (when applicable)
  • Rated voltage (when applicable)
  • Rated load
  • Manufacture date
  • ASME BTH-1 design category
  • ASME BTH-1 service class

Lifting Device Load Testing Services

Load Testing

All below-the-hook lifting devices manufactured by YorkHoist are load tested to 125% of their rated capacity prior to leaving our facility. Load Test reports are available on our online customer portal MyHCR. Learn more about MyHCR here.

Operational Practices for Lifting Devices

Below-the-hook lifting devices shall only be operated by the following qualified personnel:

  • Personnel designated to operate the lifter.
  • Trainees who are under the direct supervision of designated personnel.
  • Personnel designated to maintenance and/or conduct testing on the lifter.
  • Personnel designated to inspect the lifter.

Below-the-hook lifting devices shall not:

  • Be overloaded beyond the manufactured rated capacity.
  • Be utilized to handle any load that it was not designed to handle.
  • Be utilized when rigging is kinked or multiple part lines are twisted around each other.
  • Be utilized when the load is not distributed properly.
  • Be utilized when the load temperature exceeds the maximum allowable limits.
  • Be utilized in a manner causing the load to swing.
  • Be left unattended with a load attached.

Periodic Inspection

A visual inspection is performed by a qualified inspector who records the current condition of the below-the-hook lifter in order to provide the basis for a continuing program of recorded evaluation. Dated reports for periodic inspections shall be maintained.

  • Normal use - annual inspection typically performed on-site.
  • Heavy use - disassembly by a qualified individual should be performed semi-annually to facilitate a detailed inspection.
  • Severe use - disassembly by a qualified individual should be performed quarterly to facilitate a detailed inspection.
  • Special or infrequent use - outlined as specified by a qualified individual prior to and following each use.
  • Any lifter that has been idle for a period of one year or more shall undergo a periodic inspection prior to use

All YorkHoist inspectors meet and exceed OSHA, ANSI, CMMA, and CCAA requirements. Bundle your below-the-hook lifting device inspection with our Guardian Assurance Packages to save thousands annually.

Qualified Inspector Information, FREE GUIDE

For more information or to purchase a copy of the standard, visit ASME website,

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