60 m Top view Side view Fig .l: Side and top of view of the proposed dam 1. Provide preliminary dam design, A stable gravity dam cross-section must be designed in terms of sliding and overturning given that the coefficient of sheer resistance of the foundation soil is 0.75, and the tailwater level of water converted into the channel directly behind the dam is 0.5m. Assuming an uplift force variation with no information about drainage (as a straight line from 100% of the headwater pressure at the upstream face (heel) to 100% of the tailwater pressure at the downstream face (toe) applied over 100% of the base area) and assuming usual conditions only. 1.1 Provide a schematic diagram showing the forces imposed on the dam 1.2 Determine the horizontal and vertical forces imposed on the dam body. 1.3 Determine the dam weight needed to achieve a sliding factor of safety of 1.5 1.4 Determine the moments imposed at the dam toe. 1.5 Determine the dam weight needed to achieve an overtuning factor of safety of 2. 1.6 Assuming that the dam downstream is with a slope of IV/2H determine the dam base width to satisfy the stability requirements 1.7 At the dam bottom an emergency square gate (4mx4m) is placed to discharge water during flood events, and it is supported by a hinge at the top. What would be the force needed to open the gate?
60 m Top view Side view Fig .l: Side and top of view of the proposed dam 1. Provide preliminary dam design, A stable gravity dam cross-section must be designed in terms of sliding and overturning given that the coefficient of sheer resistance of the foundation soil is 0.75, and the tailwater level of water converted into the channel directly behind the dam is 0.5m. Assuming an uplift force variation with no information about drainage (as a straight line from 100% of the headwater pressure at the upstream face (heel) to 100% of the tailwater pressure at the downstream face (toe) applied over 100% of the base area) and assuming usual conditions only. 1.1 Provide a schematic diagram showing the forces imposed on the dam 1.2 Determine the horizontal and vertical forces imposed on the dam body. 1.3 Determine the dam weight needed to achieve a sliding factor of safety of 1.5 1.4 Determine the moments imposed at the dam toe. 1.5 Determine the dam weight needed to achieve an overtuning factor of safety of 2. 1.6 Assuming that the dam downstream is with a slope of IV/2H determine the dam base width to satisfy the stability requirements 1.7 At the dam bottom an emergency square gate (4mx4m) is placed to discharge water during flood events, and it is supported by a hinge at the top. What would be the force needed to open the gate?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Could you please solve the follwing quastion?
Transcribed Image Text:30m 12m
60 m
Top view
Side view
Fig .1: Side and top of view of the proposed dam
1. Provide preliminary dam design, A stable gravity dam cross-section must be designed in terms
of sliding and overturning given that the coefficient of sheer resistance of the foundation soil is
0.75, and the tailwater level of water converted into the channel directly behind the dam is 0.5m.
Assuming an uplift force variation with no information about drainage (as a straight line from
100% of the headwater pressure at the upstream face (heel) to 100% of the tailwater pressure at
the downstream face (toe) applied over 100% of the base area) and assuming usual conditions
only.
1.1 Provide a schematic diagram showing the forces imposed on the dam
1.2 Determine the horizontal and vertical forces imposed on the dam body.
1.3 Determine the dam weight needed to achieve a sliding factor of safety of 1.5
1.4 Determine the moments imposed at the dam toe.
1.5 Determine the dam weight needed to achieve an overturning factor of safety of 2.
1.6 Assuming that the dam downstream is with a slope of 1V/2H determine the dam base width to
satisfy the stability requirements
1.7 At the dam bottom an emergency square gate (4mx4m) is placed to discharge water during flood
events, and it is supported by a hinge at the top. What would be the force needed to open the gate?
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