A timber dam is made of planking backed by vertical piles. The piles are built-in at the section A where they enter the ground and they are supported by horizontal struts whose centre lines are 10 m above A. The piles are spaced 1 m apart between centres and the depth of water against the dam is 10 m. Planking Strut Pile Assuming that the thrust in the strut is two-sevenths the total water pressure resisted by each pile, sketch the form of the bending moment and shearing force diagrams for a pile. Determine the magnitude of the bending moment at A and the position of the section which is free from bending moment. -10m-

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Chapter9: Moments And Products Of Inertia Of Areas
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7.13
A timber dam is made of planking backed by vertical piles. The piles are built-in at
the section A where they enter the ground and they are supported by horizontal struts
whose centre lines are 10 m above A. The piles are spaced 1 mapart between centres
and the depth of water against the dam is 10 m.
Planking
Strut
Pile
Assuming that the thrust in the strut is two-sevenths the total water pressure
resisted by each pile, sketch the form of the bending moment and shearing
force diagrams for a pile. Determine the magnitude of the bending moment
at A and the position of the section which is free from bending moment.
(Cambridge)
10m-
Transcribed Image Text:7.13 A timber dam is made of planking backed by vertical piles. The piles are built-in at the section A where they enter the ground and they are supported by horizontal struts whose centre lines are 10 m above A. The piles are spaced 1 mapart between centres and the depth of water against the dam is 10 m. Planking Strut Pile Assuming that the thrust in the strut is two-sevenths the total water pressure resisted by each pile, sketch the form of the bending moment and shearing force diagrams for a pile. Determine the magnitude of the bending moment at A and the position of the section which is free from bending moment. (Cambridge) 10m-
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