000			02562nam a2200241Ia 4500
003			NULRC
005			20250520102834.0
008			250520s9999 xx 000 0 und d
020			_a9781438455266
040			_cNULRC
050			_aTG 300 .L44 2015
100			_aLee, George C. _eauthor
245		0	_aBridges : _btheir engineering and planning / _cGeorge C. Lee and Ernest Sternberg
260			_aAlbany, New York : _bState University of New York Press, _cc2015
300			_axiv, 166 pages : _billustrations ; _c23 cm.
365			_bPHP1226.12
504			_aIncludes bibliographical references and index.
505			_aPreface and acknowledgments -- Deciding about bridges -- Crossing the bridge before you get there -- Counting our bridges -- Bridge engineering -- Understanding stresses and strains -- Bridge types and sites -- Making strong bridges: dealing with uncertainty -- Resisting extreme events -- Bridge planning -- Is it worth it?: costs, benefits, and tough decisions -- Traffic across the bridge -- The bridge in the environment -- Delivering the bridge -- Conclusion -- A bridge across a millennium.
520			_a Whether you are a student considering a career in civil engineering and transportation planning, a public official interested in the future of infrastructure, or a person who simply cares about bridges, this book offers an accessible and illustrated introduction to the most beloved feature of our built environment. Learn about engineering basics: the forces that bridges must resist to stay aloft and the principles by which engineers decide which types of bridges make sense at which sites. Find out how engineers protect bridges from their greatest threats--the earthquakes, floods, and other hazards that can cause catastrophic damage. Moving from engineering to planning, learn how we decide whether a bridge is worth building in the first place, learn about controversial features of cost-benefit analysis, and about the transportation models by which planners forecast bridge effects on traffic patterns. Investigate a sometimes intractable problem: why a project often creeps along for a decade or more to get from initial studies to the day the ribbon is cut, undergoing vast cost escalations. Also explore the environmental impact of bridges, and the meaning of a "sustainable bridge," and whether bridges could once again be built, like ancient Roman ones, to last a thousand years.--Back cover.
650			_aBRIDGES -- DESIGN AND CONSTRUCTION
700			_aStenberg, Ernest _eco-author
942			_2lcc _cBK
999			_c16640 _d16640