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CHAPTER IIEconomic Problems of the Heavy Motor Truck 1619
CHAPTER IVSelecting the Type of Road Surfacino 2530
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Ammonia amount asphalt binder bituminous material blasting machine bottom boulders brick capillary capillary action cartridges cement cent CHAPTER charge clay concrete considerable construction cost course culverts curbs depends depth drain drainage drill dynamite earth road economical efficiency Electric Blasting Caps employed engineer equipment excavation explosives feet filled force foundation Fresno scrapers grade gravel roads ground grout hard hardpan haul heavy motor truck heavy truck Hercules Hercules Powder Company highway highway engineer holes hygroscopic inches joints least load macadam maintenance metamorphic rocks method mixed necessary nitroglycerin patrolman pavement petroleum placed pounds powder practice public roads quarry removed road builder road drag road improvement road surface roadway rock roller rolling sand satisfactory scrapers screenings secure shoulders shovel side ditches slope soil steam shovel stone strength explosive stumps subgrade sufficient tamped tap root tion tractor traffic usually wagons wheels width