Ex 9-3: land is planted by crop of consumptive use 14 m³/donum/day, minimumlimit of sprinkling rate 8 mm/hr, diameter of sprinkler influence 30 m, theinterference in the lateral 50% and interference in the cross direction 35%;a. Calculate the irrigation interval if the application time 4 hrs and basicinfiltration I basic =15 mm/hrb. By using transferred laterals of 150 m length the water is applied as twoirrigation of 6 hr in daily (including 2 hr to transfer the lines). Calculate thearea served by pump in one irrigation and then calculate discharge of pump.

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Answered: Ex 9-3: land is planted by crop of…

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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(b) Given data: K=0.3 hr¹¹, K₂=0.3 hr¹; fo =0.75 in/hr, fc = 0.25 in/hr. 0.1 1 0.2 2 1.0 3 0.8 t(hr) ¡(in./hr) Compute the depth of rainfall excess using Horton's Infiltration Capacity Method
Irrigation 29. The time required to irrigate a strip of area 0.203 hectare by a stream discharge of 0.043 cumec, for an average depth of 6.35 cm to the field is (assume average rate of infiltration to be 5 cm/h) (a)2.75 hour (approx.) (6)1.30 hour (approx.) (c) 1.5 hour (approx.) (d) 1.90 hour (approx.) Arsy A $11 C 90
Q1) Estimate the constant rate of withdrawel in (m3/sec) from a (1375 ha) reservior in a month of (30 days) during which the reservior level dropped by (0.75m) in spite of an average in flow into reservoir of (0.5 MeM day) During the month the average seepage losses from reservior was (2.5 cm) total precipitation on the reservior was (18.5cm) and the total evaporation (9.5cm)?
zain IQ ZAIN IQ 2_54583630275... -> Q1) Estimate the constant rate of withdrawel in (m3/sec) from a (1375 ha) reservior in a month of (30 days) during which the reservior level dropped by (0.75m) in spite of an average in flow into reservoir of (0.5 McM/day) During the month the average seepage losses from reservior was (2.5 cm) total precipitation on the reservior was (18.5cm) and the total evaporation (9.5cm)? Q2/ The normal annual precipitation at station is differs from that at station E by 50% from normal annual precipitation at station E, the normal annual precipitation of stations A, B, C and D are respective 120,97,71 and 107cm, During particular storm the precipitation recorded by stations A, B, c and C are 12.6, 8,6 6,2 and 9,8 cm respectively. The station E was inoperative during that storm. Estimate the rainfall at station E during that storm? Q3/ A square of 100km2 is gauged by three rainfall stations. Two stations at the corner of area and other at on equal distance on…
05. You have the ½h-UH due to 1 cm effective rainfall. Time (hours) ½h- UH (m/s) 0.5 60 1.0 150 1.5 90 2.0 30 2.5 a. What is the area of the catchment? b. Derive the 1h-UH. c. Derive the S hydrograph. d. Derive the direct runoff hydrograph (DRH) due to the given rain storm. Assume the infiltration index at 1.0 cm/hr Total Infiltration loss Effective Rainfall Time (hour) Ecess rainfall (cm) 0.5 1.0 2.5 0.5 1.5 1.5
Rapid Sand Filter - Example > Determine the minimum number of rapid sand filters necessary to treat a flow of 20 mgd if the maximum design hydraulic loading is 5 gpm/ft?. Assume the maximum dimension is 24 feet and the L:W = 1.2:1. Note: consider backwashing operation. %3D b. 7 а. 6 с. 8 d. 9
drainage system. KA 2 SA 1 = KB 1' SB 1.5 Find the ratio There are two different areas A and B to be drained by means of closed tile (b²-a²), ΤΑ (b² - 2² ) B = Find the ratio and (QD) A (QD)B If the drains carry 1% of average annual rainfall in 24 hours in both the cases. PA PB 5
0.74 L Ex.2: According to Figure, if di = 66 mm , adequacy=74% find: the irrigation interval if consumptive use 6 mm/day and application efficiency assuming the gross depth 184 mm. dn di d-82.0mm
Compute for the discharge at the outlet of canal to drain a waterlogged area of 100 ha. Drainage coefficient (rate at which water is drained from the field per day) is 10 mm. Ans. 115.7 lps.
0.74 L Ex.6: According to Figure, if di = 66 mm , adequacy=74% find: - the irrigation interval if consumptive use 6 mm/day and -application efficiency assuming the gross depth 184 mm. d-82.0mm d. di
Q4// Field is irrigated by border system with the following data: 1. Length of border=150m, width of border-6m , flow rate of one border =900 Lpm. 2. Application efficiency 60% , crop consumptive use 12 mm/day. 3. Infiltration formula dem = 0.6 t5 Assume the net irigation depth equal to the infiltrated depth through application time and calculate: a) Application time b) Net irrigation depth c) Gross irrigation depth d) Imigation interval min
IQ4// [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.

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