4. Repairs 



Costs were estimated for each 

 size of equipment for the 1st, 2nd 

 and 3rd years, respectively, based on 

 performance reports in the field. 

 Costs were applied, using the three- 

 year average for the type of chassis 

 and can or tank body. 



C. Estimates of the Carrying 

 Capacities of Can and 

 Tank Milk Trucks 



1. 1^4 -ton Stake, 



14,500 lbs. vehicle weight 



Capacity was based on 90 (40 

 qt.) can average at 77.4 lbs. of milk 

 per can or 6,966 lbs. ( Forty quarts 

 of milk weigh 86 lbs., but the cans 

 are assumed to be only 90 percent 

 full.) 



2. 2-ton Stake, 



19,000 lbs. vehicle weight 



Capacity was based on 111 (40 

 qt.) can average at 77.4 lbs. of milk 

 per can, or 8,600 lbs. 



3. 3-ton Van 



25,000 lbs. vehicle weight 



Capacity was based on 168 (40 

 qt.) can average at 77.4 lbs. of milk 

 per can, or 12,900 lbs. 



4. 1,000-Gallon Tank 



Capacity was figured at 8.6 lbs. 

 per gallon of milk, or 8,600 lbs. 



5. 1500-Gallon Tank 



Capacity was figured at 8.6 lbs. 

 per gallon of milk, or 12,900 lbs. 



6. 2,000-GaIIon Tank 



Capacity was figured at 8.6 lbs. 

 per gallon of milk, or 17,200 lbs. 



D. Method of Adjusting 



Estimated Costs to 100 

 and 50 Mile Routes 



An important segment of opera- 

 tional costs obtained in the field was 

 based on actual commercial trucking 

 data from sources not identified in 

 this study. The average mileage was 

 100 and pay load 8,000 lbs. or the 

 milk from approximately fifteen 

 dairy farms. 



Adjustment from 100 miles to 50 

 miles for insurance is covered under 

 that section. The other fixed expenses 

 were not adjusted because of mile- 

 age variance, although it is conceiv- 

 able that the trade-in would be higher 

 for a truck with less total mileage 

 used. Much depends on the driver 

 and on the type of maintenance given 

 a truck. 



Gas and oil costs in these studies 

 were adjusted proportionately to 

 mileage. In actual practice, any rate 

 of performance per gallon is, of 

 course, subject to the variances in 

 the terrain. 



Tire replacement and repairs to 

 equipment are costs that reduce 

 roughly in proportion to reduced 

 mileage. Standard tires were used in 

 the data on can trucks, with the ex- 

 ception of the 3-ton van truck, which 

 used oversized tires. Cost of heavy 

 duty tires were figured on all tank 

 trucks. Many major repairs involve 

 standard parts and labor costs. 

 Therefore, in the drop of 50 percent 

 of the mileage, their costs were re- 

 duced 33% percent as a conserva- 

 tive figure. 



59 



