Steel Bridge Construction, Myths & Realities D432-07 (2008)

Steel Bridge Construction: Myths & Realities\r......Page 1
Table of Contents......Page 3
Introduction\r......Page 4
MYTH: Concrete lasts forever without maintenance.......Page 5
MYTH: Concrete bridges outlast steel bridges.......Page 6
MYTH: Weathering steel performs only under ideal climatic conditions.......Page 7
MYTH: Optimization by weight is the best approach to economical design.......Page 10
MYTH: Steel Is Not Recommended For Short Spans.......Page 13
MYTH: Bridge joints are essential.......Page 14
MYTH: Steel bridges require traditional fabricated steel bearings rather than bearing pads usuallyspecified in prestressed concrete designs.......Page 15
MYTH: Painting or repainting of steel bridges is an insurmountable problem.......Page 16
MYTH: Bridges at the end of their calculated fatigue life or those experiencing localized fatigue problems have to be replaced.......Page 21
MYTH: Modular prefabricated short-span steel bridges are only temporary structures.......Page 22
MYTH: Timber decks on modular prefabricated short-span steel bridges do not hold up and the timber treatments leach harmful chemicals into the environment.......Page 23
MYTH: Corrugated steel pipe or corrugated steel plate bridges do not last, as they tend to rust out.......Page 24
MYTH: Reinforced concrete pipe lasts forever.......Page 25
MYTH: Corrugated steel pipe and corrugated structural plate bridges cannot compete with comparable reinforced concrete structures.......Page 26
MYTH: Although able to provide long-term protection under adverse environmental conditions, galvanizing on plate-girder and rolled-beam bridges is prohibitively expensive.......Page 27