How Roads Are Made
Gwen Cherrell
0816020418
Is a former library book. May have a stamp or writing on the inside cover of the book. May have a piece of tape on the cover, bar code, or the checkout form on the last page. See pictures for actual item.
Throughout history, the movement of ordinary people and of monarchs, of essential food supplies and equipment, of armies and their provisions, has depending upon roads. The expansion of the Roman Empire was made possible by the construction of 52,000 miles of paved highway. In South America the Incas built a road that extended over 1,000 miles across the Andes. These works were marvels of early civil engineering, and some are still in operation today. During the 20th century the tremendous increase int he volume of traffic and revolutionary advances in technology have resulted in a global network of highways and interchange systems linking villages, towns, cities, and continents.
This book explains how roads are made, from the early stages of planning, through design and construction, to long-term maintenance. Among the many subjects covered are topographical survey, earth moving, types of road pavement, sign posting and safety.