Standardization in the field of construction including terminology, performance requirements, methods of, design and construction rules, classification and specification of materials, including dimensional properties. It defines terms and commercial specifications for machines used for concrete surface floating and finishing (also known as power trowels). This includes pedestrian-controlled equipment and ride-on equipment. It does not address strike-off type machines, commonly known as screeds. The TC will also defines terminology and commercial specifications for concrete placing systems which are stationary. This document defines terms and establishes the content for commercial literature for concrete mixers used either as individual machines on building sites or as components of batching plants. Definitions refer to whole machines, their structure and parameters. The commercial specifications establish technical characteristics of the whole machines and their components. It establishes additional terminology to describe the functioning and the required and optional components for various types of concrete mixers. The content of commercial literature specifications for these types of machines is defined.