Lecture 1

Question 1

The spacing between the piers…

Answer 1

determine the span length of the superstructure

Question 2

Slab bridges normally are designed to have a span range that is….

Answer 2

40’ or less

Question 3

Truss bridges normally are designed to have a span range that is….

Answer 3

300-1800’ and normally steel

Question 4

Girder bridges normally are designed to have a span range that is….

Answer 4

40’-700’ if made with concrete
100’ - 860’ if made with steel

Question 5

Arch rib bridge bridges normally are designed to have a span range that is….

Answer 5

300-1000’ if made with concrete
400’-1200’ if made with steel

Question 6

Arch truss bridges bridges normally are designed to have a span range that is….

Answer 6

800’-1700’

Question 7

Cable Stayed bridges normally are designed to have a span range that is….

Answer 7

300’-1100’ if made with concrete
800’-1500’ if made with steel

Question 8

Suspension bridges normally are designed to have a span range that is….

Answer 8

1000-5000

Question 9

The steel plate must

Answer 9

span between the adjacent ribs

Question 10

the plate and the ribs must

Answer 10

span between the cross girders

Question 11

The cross girders are carried by

Answer 11

by the two main girders

Question 12

The steel plate works

Answer 12

as an upper flange to the main girder