ASME BTH-1-2020 covers structural design criteria for below-the-hook lifting devices. It defines allowable stress methods for structural members and provides formulas, correction factors, and design margins for lifting beams, spreader bars, and similar lifting attachments. SDC Verifier uses selected provisions from the 2020 edition to build a member check set. The software does not include or reproduce the full text of ASME BTH-1; engineers must consult the official publication.
In SDC Verifier, the BTH-1-based member checks support the following symmetrical cross-sections:
- Double-symmetric I-shapes
- Single-symmetric channels
- Circular tubes and bars
- Rectangular tubes and bars
Within SDC Verifier, you can choose check sets based on:
- ASME BTH-1:2017
- ASME BTH-1:2020
- ASME BTH-1:2023
While the overall design philosophy stays consistent, specific definitions, factors, or limits are edition-dependent. Users select the applicable edition according to client requirements or regulatory obligations.
ASME BTH-1 is intended to complement ASME B30.20, which addresses construction, marking, inspection, and maintenance of below-the-hook lifting devices. SDC Verifier focuses on the structural member checks; engineers are responsible for applying BTH-1 and any related standards in full and for final compliance decisions.
