Elementary Surveying: An Introduction To Geomatics (15th Edition)
15th Edition
ISBN: 9780134604657
Author: Charles D. Ghilani
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 1.2P
Explain the difference between geodetic and plane
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Q2/
In a design of a portable sprinkler system, the following information is given:
•
•
The sprinklers are distributed in a square pattern with radius of the wetted circle of
the sprinkler=15 m
Consumption rate = 10 mm/day
Efficiency of irrigation = 60%
Net depth of irrigation (NDI)= 80 mm.
Find the following:
1-Sprinkler application rate if HRS = 11.
2-Number of pipes required for irrigation.
(50 Marks)
3-Discharge of sprinkler, diameter of nozzle, and the working head pressure if C=0.90.
4-Diameter of the sprinkler pipe for Slope=0.
5-Pressure head at the inlet and at the dead end of the sprinkler pipe for Slope=0.
(F² + L²)((SF)² + L²)
L²
2L² ≤ D²
L² + S² ≤ D²
A, = * 1000
S*L
≤D²
N W
Af
m-11-P L'
Hf
= 1.14*109 *
1.852 *
L
*F,where c=120
D4.87
Source
main pipe
180 m
540 m
N
1
1 √m-1
F =
im/Nm+1
=
+
+
m+1
2N
6N2
i=1
Nozzle diameter (mm)
3< ds 4.8
4.8< ds 6.4
6.4
Miniatry of Higher
scent Research
University of Ke
Faculty of Engineering
Cell Engineering Department
2024-2025
Mid Exam-1 st Attempt
Time
Date: 17/04/2025
Notes: Answer all questions. Not all figures are to scale. Assume any values if you need them.
Q1/ A farm with dimensions and slopes (50 Marks)
=
shown in the figure below. If you asked
to design a border irrigation system and
if you know that Net depth of irrigation
- 96mm .Manning coefficient = 0.15,
Time of work in the farm is 6
hours/day. Design consumption use of
water from the crop (ET) 16 mm/day,
Width of the agricultural machine equal
to 2.5m, Equation of infiltration - D=
12-05 and Efficiency of irrigation=
60%. You can neglect the recession lag
time. Find the width and number of the
borders, Irrigation interval and time
required to irrigate the whole farm,
Depth of flow in the inlet of border
Number of borders that irrigated in one
day and The neglected recession lag
time
Slope of irrigation %
Maximum border width
0-0.1
30…
PLease make sure to show all work and all steps
for the image find the magnitude and stresses
Chapter 1 Solutions
Elementary Surveying: An Introduction To Geomatics (15th Edition)
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