The time involved in travel for trucks and crews was considered to 

 be entirely associated with mileage, hut the longer the trip the greater 

 the average speed per mile. The relationship hetween trip length and 

 travel time and the method of converting radial distances to travel 

 time are given in Appendix B. Travel speed for either size of truck is 

 the same and depends upon the one-way trip distance. 



The density of production in the supply area, the size of the pickup 

 crew, the volume to he hauled, the miles involved in hauling, and the 

 restriction of a 10-hour work day all interact to establish the maximum 

 distance poultry can be located from the plant, and the number of trips 

 a truck can make in one day. Appendix C develops this relationship. 

 The less dense the production of poultry in any firm's supply area, the 

 greater the distances trucks must travel to assemble a given volume, and 

 the fewer the number of trips a trvick can make. 



Labor Productivity in Loading Live Birds 



The loading activity at the farm consists of: positioning trucks, 

 setting up catching pens, catching and carrying the birds, placing the 

 birds in the crates on the truck, and securing load. Labor prodvictivity 

 coefficients for live bird loading are essential data in the use of the 

 assembly model for quantifying input requirements. Observation of as- 

 sembly operations and records of assembly firms were used in deter- 

 mining these coefficients. Labor use is divided into two categories: travel 

 time from plant to farm and return, and loading time at the farm. The 

 former is essentially "overhead" time for the pickup job involved; the 

 latter is variable in that it depends upon the quantity of poultry. 



The men involved in the assembly function are divided into three 

 classifications: truck drivers, pickup labor, and foremen. One truck 

 driver is assigned to each truck. Each round trip of a truck consumes 

 an amount of driver time equal to the elapsed time from plant and 

 return to plant for one driver. This includes loading time of his truck 

 at the farm, but not unloading time at the plant. If the truck makes 

 more than one trip, turn-around time at the plant is included with 

 driver time. 



One foreman is assigned to each crew. Foreman time is the amount 

 of elapsed time from plant and return to plant for the crew, which in- 

 cludes the amount of time spent traveling, loading birds, and off time. 

 Pickup labor time per crew in the assembly operation is the elapsed 

 time from plant and return to plant for the crew multiplied by the num- 

 ber of pickup laborers per crew. This includes amount of time spent 

 traveling, loading birds, and off time. 



The loading crew includes a foreman, the driver of the truck which 

 is being loaded, and a number of pickup laborers, all entering into the 

 physical activities necessary for pickup and loading. The number of 

 nien in the crew will be such as to minimize labor use. The method of 

 arriving at this is explained later. It depends upon travel distances, 

 various sizes of crews, and the quantity of poultry that has to be loaded. 

 The restrictions are that no pickup laborer, foreman, or truck driver can 

 put in more than a 10-liour day from plant and back to plant, and that 

 crew size cannot exceed 10 men (one foreman, one driver, eight labor- 

 ers ) . 



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