Consider that the figure below represents a series of arches. each arch spans 200 ft, has a rise of 30 ft, and is spaced at 30 ft on the center. Together, the arches carry a total distributed dead and live load of 100 lb/ft squared.

For an interior arch:

a) determine the reactions at pin support A

b) determine the resultant reaction at the pin support A

c) determine the maximum force in the arch, and where it occurs?

d) a tie-rod is used at the base of the arch to absorb horizontal thrusts. Determine the force in the tie-rod.

 

Transcribed Image Text:

PLAN VIEW L = 200 ft (b) B t 30 ft PLAN VIEW L = 200 ft (b) B t 30 ft