An opening in a dam is closed by a plate 1 m square which is hinged at the upper horizontal edge as shown in figure. The plate is inclined at an angle of 60° to the horizontal and its top edge is 2 m below the water surface in the reservoir. If this plate is pulled by means of a chain attached to the centre of the lower edge, find the necessary pull T in the chain. The line of action of the chain makes an angle of 45° with the plate. Weight of the plate is 1.962 kN. T Chain Water surface in reservoir 1 m 2 m 45° Hinge Plate 60° Opening (1 mx 1 m) Dam

An opening in a dam is closed by a plate 1 m square which is hinged at the upper horizontal edge as shown in figure. The plate is inclined at an angle of 60° to the horizontal and its top edge is 2 m below the water surface in the reservoir. If this plate is pulled by means of a chain attached to the centre of the lower edge, find the necessary pull T in the chain. The line of action of the chain makes an angle of 45° with the plate. Weight of the plate is 1.962 kN. T Chain Water surface in reservoir 1 m 2 m 45° Hinge Plate 60° Opening (1 mx 1 m) Dam

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.

Question

An opening in a dam is closed by a plate 1 m square which is hinged at the
upper horizontal edge as shown in figure. The plate is inclined at an angle
of 60° to the horizontal and its top edge is 2 m below the water surface in the
reservoir. If this plate is pulled by means of a chain attached to the centre
of the lower edge, find the necessary pull T in the chain. The line of action
of the chain makes an angle of 45° with the plate. Weight of the plate is 1.962
kN.
T
Chain
Water surface in
reservoir
[.
2 m
T
դա լ
45°
I
Hinge
Plate
60°
Opening
(1 m x 1 m)
Dam

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