Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory %&'ECT(
The force on a sluice gate
A))A*ATUS(
Self-contained glass sided Tilting Tilting flume, Adjustable undershot weir (Sluice gate), Instrument carrier, Hook and point gauge,
TE%*+(
esultant gate thrust, !g " # ρg $%& '$&$%& -%* - ρ+b$% '%- $% $* esultant Hdrostatic Thrust, !H " # ρg ($ $g)&
Sluice ate( .Sluice gate. refers to a mo/able gate allowing water to flow under it0 1hen a sluice is lowered, water ma spill o/er the top, in which case the gate operates o perates as a weir0 2suall, 2suall, a mechanism dri/es the sluice up or down0 This ma be a simple, hand-operated, chain pulledlowered, worm dri/e or rack-and-pinion dri/e, or it ma be electricall or hdraulicall powered0
Applications Applications of Sluice ate( Sluice gate is used for controlling the rate of flow in ri/ers and canals0 Also used for measuring of flow in ri/ers and canals0 Also used in the waste water treatment plant0 To reco/er the minerals or other element such as black sand 3 go ld in mining operation and
water mills0 Also used for fishing purpose in na/igation lock0
)*%CEDU*E(
4nsure the flume is hori5ontal and that the downstream weir is at the bottom of its tra/el0 6lace the adjustable undershot weir /erticall in position with its bottom edge &mm abo/e the flume bottom0 7pen the inlet /al/e and admit water un til $ " &80 mm0 1ith $ at this height, measure +, $%, and H0 aise the weir in increments to a height of 9mm, maintaining $ at a height of sa
Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory
&80 mm, b /aring the flow of water0 At each le/el of the weir record the /alues of +, $ % and H0 epeat the procedure with a constant flow, + allowing $ to /ar0
*ESU#TS AD CA#CU#AT"%S +g
+.
+/
Q 01ol ! t2
•
Calculate 3g and 3 and compare4
•
)lot the ratio 3 g! 3 against +g !+.
3g
3
3g!3
+g!+.
Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory
Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory
Short Questions
Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory
+:%; 1hat ha/e ou learned from this e
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Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory
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+:&; ?ompare actual and e
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Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory +:8; ?ompare our calculated /alues for !g and !H and comment on an differences andor
similarities=
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Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory
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Quaid-e-Awam University of Engineering, Science and Technology Department of Civil Engineering ydraulics ! "rrigation #a$oratory
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