Example 13.1 Design a gantry girder to be used in an industrial building
carrying a manually operated overhead travelling crane, for the following data:
200 KN
Crane capacity
200 KN
Self-weight of the crane girder excluding trolley
40 kN
Self-weight of the trolley, electric motor, hook, etc.
Approximate minimum approach of the crane hook to the
1.20 m
gantry girder
3.5 m
Wheel base
16 m
c/c distance between gantry rails
8 m
c/c distance between columns (span of gantry girder)
300 N/m
Self-weight of rail section
150 mm
Diameter of crane wheels
Steel is of grade Fe 410. Design also the field welded connection if required.
The support bracket connection need not be designed.
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