Why is the vacuum well-point dewatering system expected to withdraw a greater quantity of groundwater than the conventional well-point dewatering system?
Q: is placed on a slope of 0.010, what is the flowing full capacity when n = 0.013 in cu.m/sec?
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Q: can you differentiate actual and potential infiltration
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Q: if a 250mm sewer is placed on a slope of 0.010, a. what is the flowing capacity when n=0.013…
A: Given data Dia of pipe = 250 mm Manning constant = 0.014 Slope = 0.010
Q: Determine the required spacing between pipes in a leachate-collection system using a geonet and the…
A: Consider the equation of leachate pipe spacing; Substitute in the settings for a design storm(25…
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Q: What is Unit Hydrograph? Discuss Unit Hydrograph method of estimating maximum Probable Discharge.
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Q: Review Water flows at 25 ft³/s in the channel, which is originally 6 ft wide and then gradually…
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Q: Compute the value of the hydraulic radius for a circular pipe flowing half-full.
A: The pipe with half-full flow:
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A: Given- Diameter of drainpipe = 500 mm
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Q: b. A rectangular sewer with width four times its depth is hydraulically equivalent to a circular…
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A: Explanation:
Q: Discuss Unit Hydrograph method of estimating maximum Probable Discharge.
A: A unit hydrograph is the hydrograph of direct runoff caused by one unit depth (1 cm) of rainfall…
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A: Given: The flow rate is 10 m3/sec. The manning coefficient is 0.014. The channel slope is 0.0004.…
Q: What is Unit Hydrograph? Discuss Unit Hydrograph method of estimating maximum Probable Discharge.
A: The hydrograph is a plot between discharge of stream and time in a chronological order at a given…
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A: (i) Hand dug well are frequently employed by rural communities. Construction of these wells are very…
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Q: A dug well gives access to a groundwater aquifer and facilitates its abstraction. Dug wells can be…
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Q: a 250 mm sewer is placed on a slope of 0.010, what is the flowing full capacity and hydraulic radius…
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Q: The water need of a district with a future population of 38800 and average daily water consumption…
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Q: Determine the diameter of pipe drains that drain out 24 mishara of drainage area with drainage…
A: given drainage cofficient = 1.5cm/day garde = 0.004 n = 0.013
Q: Question 1 a. A channel has two vertical sides and a semi-circular bottom of 2-m diameter. Calculate…
A: to solve given question of fluids mechanics
Why is the vacuum well-point dewatering system expected to withdraw a greater quantity of groundwater than the conventional well-point dewatering system?
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- Question 4Determine the required spacing between pipes in a leachate-collection system using a geonet and the following properties. Assume the most conservative design and that all stormwater from a 25-yr, 24-hr storm enters the leachate-collection system.Geonet transmissivity, ?= 10 ??2???⁄.Design storm (25-year, 24-hour) = 8.2 ??.Drainage slope = 2%Maximum design head on liner = 6 ??.Determine the required spacing between pipes in a leachate-collection system using a geonet and the following properties. Assume the most conservative design and that all stormwater from a 25-yr, 24-hr storm enters the leachate-collection system. Geonet transmissivity, ? = 10 ?? 2 ? ?? ⁄ . Design storm (25-year, 24-hour) = 8.2 ?? . Drainage slope = 2% Maximum design head on liner = 6 ?? .Determine the diameter of corrugated field drain required to drain area of (20O *100) m if the drainage rate Q = 3mm/day and slope of field drain 12 cm/km. O 110 mm O 90 mm O 150 mm 82 mm
- |Q4|// |A]: For a small drainage area, the infiltration rate at the start of rainfall storm was record to be 90 mm/hr and declined exponentially to a constant rate of 8 mm/hr after 2.5 hr. The total infiltration during 2.5 hr was 50 mm. Develop the Horton's equation for the infiltration rate at any time t< 2.5 hr. [B]: Find the required discharge of irrigation water at the headwork of the distiriburatry, if the gross area is 20000 mishara, the irrigation intensity is 65%, and the water duty is 1600 hectare/m/sec.Using the Manning nomograph determine the following: a. An 800 mm diameter sanitary sewer is built on a slope of 0.2 percent. What is the full-flow discharge capacity of the sewer and what is the flow velocity? b. What diameter pipe is needed to carry a peak flow of 200 liters/s on a grade of 0.007 ? c. The discharge for a 200 mm inside diameter common clay drainage tile running half full if it is laid on a slope that drops 1 m over a run of 1000 m . Assume n=0.01 .5. A storm drainage channel has the shape shown in Figure 5. It is made of unfinished concrete and has a slope of 0.5 percent. During normal times, water remains only in the small rectangular section. When there is a big rainfall, the upper section allows large volumes to be carried by the channel. a. Compute the hydraulic radius and normal discharge when the water depth is 0.50 m. b. Compute the hydraulic radius and normal discharge when the water depth is 2.50 m. 2.5 m 0.5 m 0.6 m 1.0 m Figure 5.
- DIFFERENT QUESTION FOR REVISON-EXAMINATION Additional Questions: (1) A fluid of constant density flows at the rate of 15 Liters/ sec along a pipe AB of 100 mm diameter. This pipe branches at B into two pipes, BC and BD each of 25mm diameter and a third pipe BE of 50mm diameter. The flow rates are such that the flow through BC is three times the flow rate through BE and the velocity through BD is 4 m/s. Find the flow rates in the three branches BC, BD and BE and the velocities in pipes AB, BC and BE. Water is flowing through a pipe with a velocity of 7.2 m/s. Express this velocity as velocity head in meters of water. What is the corresponding pressure in kN/m2. (2) A pipe of 150mm bore is delivering water at a rate of 7500dm3/min at a pressure of 820 kN/m2.It connects by a gradually expanding pipe to a main of 300 mm bore which runs 3 m above it. The main is designed to withstand a maximum pressure of 814 kN/m2. Neglecting loses due to friction determine if the main will fail or…Define the Deep mixing method (DMM) ?Question # 2 (a): Quantify volume of air supply if the rate is 0.3 m3/minute-m length of chamber. Assume W: D is 1.2:1, while depth is 3m for the treatment of municipal waste water. The average wastewater flow is 0.5m3/sec, and the peak flow factor is 2.7 times of average flow. Use two tanks calculate the grit chamber volume and grit materials if 0.05 m3/103m3 of peak flow is the grit concentration. Assume the average detention time is 180 seconds and horizontal velocity 0.25m/sec, while settling velocity is 0.03 m/sec. Subject: Environmental Engineering
- Max average daily flow = 16 MGD Minimum depths 10’ for primary clarifier and 15’ for secondary clarifier Find: Dimensions of clarifiers (Hint: Consider service loading and detention time) Determine Volume by finding detention time (Assume 90 minutes = 0.0625 Days) 0.0625 Days = V / 16 MGD therefore, Volume = 1,000,000 Gallons = 133,681 ft^3 Primary Clarifier (10’ depth): Cross sectional area = 13,368.1 ft^2 =0.25*pi*d^2 therefore, d = 131 ft. = 135 ft.A waste water pipe has a length of 120 meters and is required to have a capacity of 50 L/s. The ground elevations are: 255.344 m @ upper end and 254.729 m @ lower end of the pipe. The minimum cover is 3.0 meters, and the permissible velocity range is 0.6 to 3.0 m/s. a) Identify the possible pipe sizes based on the Mannings nomograph in the Reference Module b) Draw a sectional view of one of the 2500 pipe. Show covers, pipe slope and inverts. c) Determine the partial velocity of the 2500 pipe using the hydraulics elements table in the Reference Manual. Consider an actual discharge of 10 L/s.What is the flowing-full capacity and velocity for a 500-mm-diameter sewer (n =0.013) on a slope of 0.0042 m/m? Determine the actual flow and velocity for a depth of flow equalto 300 mm.