Page 47 - Urban water supply handbook
P. 47

URBAN WATER INFRASTRUCTURE: A HISTORICAL PERSPECTIVE


             1.46              HISTORY, PLANNING, OUTSOURCING



























































                                              FIGURE 1.32 Two views of the Roman aque-
                                              duct bridge in Segovia, Spain. The aqueduct
                                              was built on two levels without the use of any
                                              mortar or cement. (Photo by Larry W. Mays
                                              and copyright by Larry W. Mays)




         Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com)
                    Copyright © 2004 The McGraw-Hill Companies. All rights reserved.
                      Any use is subject to the Terms of Use as given at the website.
   42   43   44   45   46   47   48   49   50   51   52