The Crane Manufacturers Association of America (CMAA) industry group of MHI has published updates to two specifications for overhead cranes.
CMAA Specification 70 – 2020 – Multiple Girder Cranes contains information which should be helpful to the purchasers and users of cranes and to the engineering and architectural professions. While much of this information must be of a general nature, the items listed may be checked with individual manufacturers and comparisons made which can lead to optimum selection of equipment.
CMAA Specification 74 – 2020 – Single Girder Cranes promotes standardization and provides a basis for uniform quality and performance. It contains information which can be helpful for purchasers and users of cranes, as well as engineers and architects. Text consists of seven sections: general specifications, crane service classifications, structural design, mechanical design, electrical equipment, crane inquiry data sheet and glossary.
Please note that due to COVID-19, printed specifications will not be available until further notice. Downloadable PDFs of these specifications can be purchased at the following links: