girder 60 curb curb 10 section A-A
Practical application: A one-lane bridge consists
of a 10-in.-thick, 16-ft-wide reinforced concrete slab sup-
ported on two steel girders spaced 10 ft apart. The girders
are 62-ft long and weigh 400 lb/ft. The bridge is to be de-
signed for a uniform live load of 700 lb/ft acting over the
entire length of the bridge. Determine the maximum reac-
tion applied to an end support due to dead, live, and im-
pact loads. The live load may be assumed to act along the
centerline of the deck slab and divide equally between
the two girders. Each concrete curb weighs 240 lb/ft and
each rail 120 lb/ft. Stone concrete has a unit weight of
150 lb/ft3
. Assume an impact factor of 1.33.
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