What feature must masonry machinery like pumps and buckets have for safety?

Masonry machinery, such as pumps and buckets, must have conical or tapered bottoms to ensure safety in the handling and transferring of materials. The design of conical or tapered bottoms facilitates the smooth flow and discharge of concrete or mortar, preventing clogging and allowing for efficient operation. This feature is crucial in maintaining control over the materials being transported, thereby reducing the risk of spills and accidents on the job site.

A rotating base, while useful in some contexts, may not specifically enhance the safety of masonry machinery in the same way a conical bottom does. Manual operation only is not a required safety feature, as various types of machinery can be operated manually or mechanically depending on the design. Heavy-duty frames contribute to the durability and robustness of the equipment rather than directly addressing safety issues related to material movement.