Modern demands on the transporting and handling of concrete have imposed a wide variety of requirements on the operations needed, and the methods and equipment that have been developed are many. A wide variety of equipment has been designed to satisfy these and other requirements. Concrete handling operations now employ such diverse equipment as trucks, hoopers, and chutes, wheelbarrows and carts operated over runways, buckets lifted by crane, tower hoist, or cableway, belt conveyors, pumps, and in special cases rail cars, helicopters and boats or barges. Trucks, hoppers and chutes, wheelbarrows and carts will be discussed in this first part of a series of articles. The other kinds of equipment will be discussed in later installments. Trucks are the most common equipment used to transport concrete from the batch plant to the job site. The following general types are used: truck mixers which are revolving drum bodies mounted on trucks or trailers and used for the complete mixing of concrete ingredients or as agitating hauling units. Open-top agitators which are truck-mounted bodies of special shape with rotating blades in which previously mixed concrete is kept in motion during delivery. And open-top nonagitating units which may be specially shaped bodies or ordinary dump bodies mounted on trucks for delivering previously mixed concrete but without provisions to keep the concrete in motion during delivery. Trucks are used a number of ways to transport concrete. Revolving drum truck mixers are used for truck mixed concrete- concrete in which previously proportioned materials from a batch plant are transferred into the truck drum where all the mixing is performed. Trucks mixers are also used for transporting shrink mixed concrete. A variety of concrete hoppers and chutes are used to handle and distribute concrete on the job site: some of these are receiving hoppers, collection hoppers, drop chutes, elephant trunks, and open trough chutes. Receiving hoppers can be used to ensure a uniform and uninterrupted supply of concrete to other equipment especially when small quantities of concrete have to be distributed at the site. Collection hoppers are used to funnel concrete into drop chutes and elephant trucks which may or may not be attached. Drop chutes are used in cases where the sides of forms or reinforcing steel interfere with the free fall of concrete. Open trough chutes used on an incline provide one of the simplest and most economical ways of handling concrete, but they can also be one of the least satisfactory because special precautions are necessary to ensure that discharge is vertical at the end of the chute to prevent segregation.