ASME BTH-1 Updates Design of Below-the-Hook Lifting Device Requirements

March 29, 2017 - The ASME BTH-1 standard has been revised and provides minimum structural and mechanical design and electrical component selection criteria for ASME B30.20 below-the-hook lifting devices. BTH-1 addresses only design requirements and should be used in conjunction with ASME B30.20, which addresses safety requirements. BTH-1 does not replace B30.20.

 

Provisions in this standard apply to the design or modification of below-the-hook lifting devices. The design criteria set forth are minimum requirements that may be increased at the discretion of the lifting device manufacturer or a qualified person.

 

Key changes to this revision of BTH-1 include: 

• Addition of chapter of requirements for Lifting Magnet Design with additional commentary found in a corresponding new non-mandatory Appendix

• Addition of design requirements for new Design Category for specialized application in industries that require lifting designs based on a specified larger Design factor 
  

• Addition of new requirements for Member Properties
  

• Updated Table 3-2.2-1 Limiting Width-Thickness Ratios for Compression Elements

 

ASME BTH-1 and B30.20 are to be used in conjunction with equipment described in other volumes of the ASME B30 Series of safety standards. They are intended for manufacturers, owners, employers, users and others concerned with the specification, buying, maintenance, training and safe use of below-the-hook lifting devices with B30 equipment, plus all potential governing entities.