ELEMENTARY SURVEYING (LOOSELEAF)
15th Edition
ISBN: 9780134604701
Author: GHILANI
Publisher: PEARSON
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Chapter 17, Problem 17.14P
To determine
The conditions when the points should be located for contours connected by straight lines and by smooth curves.
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(2) Volume of aeration tank, V-12000m
(3) Influent BOD, Y.- 300 mg/1
(4) Effluent BOD, Y, 25 mg/1
(5) Mixed liquor suspended solids (MLSS), X,-2500mg/1
(6) Effluent suspended solids, X-30mg/1
(7) Waste sludge suspended solids, XR-9700mg/1
(8) Quantity of waste sludge, Q., 220m³/d
100
Based on the information above data, determine:
(a) Aeration period (hrs.)
(b) Food to microorganism ratio (F/M) (kg BOD per day/kg MLSS)
(c) Percentage efficiency of BOD removal
(d) Sludge age (days)
Write handwritten solution, answer a,b and c
Refer to the soil profile shown in the Figure
a. Calculate the variation of o, u, and o' with depth.
b. If the water table rises to the top of the ground surface, what is the change in the effective stress at the bottom of the clay layer?
c. How many meters must the groundwater table rise to decrease the effective stress by 15 kN/m? at the bottom of the clay layer?
Water is discharged into the atmosphere
through a bent nozzle of an angle (a) as
shown in the figure. The cross-sectional
area at the nozzle inlet and outlet are (Ain)
and (Aout), respectively. The discharge
through the nozzle is (Q). The gauge
pressure at the nozzle inlet is (Pin). The
bend lies in a horizontal plane.
Vin
Ain
Aout
Atmosphere
Vout
Problem (9): Given the values of Ain [m²], Aout [m²], Pin [atm], Q [m³/s], and a [degrees], calculate the
magnitude of the reaction force component in x-direction (Rx) in [N].
Givens:
A in = 0.301 m^2
Aout
Pin
=
0.177 m^2
1.338 atm
Q
α
=
0.669 m^3/s
37.183 degrees
Answers:
( 1 ) 23028.076 N
( 2 ) 29697.962 N
( 3 ) 18633.611 N
( 4 ) 14114.988 N
Chapter 17 Solutions
ELEMENTARY SURVEYING (LOOSELEAF)
Ch. 17 - Prob. 17.1PCh. 17 - Prob. 17.2PCh. 17 - Prob. 17.3PCh. 17 - Prob. 17.4PCh. 17 - Prob. 17.5PCh. 17 - Prob. 17.6PCh. 17 - Prob. 17.7PCh. 17 - Prob. 17.8PCh. 17 - Prob. 17.9PCh. 17 - Prob. 17.10P
Ch. 17 - Prob. 17.11PCh. 17 - Prob. 17.12PCh. 17 - Prob. 17.13PCh. 17 - Prob. 17.14PCh. 17 - Prob. 17.15PCh. 17 - Prob. 17.16PCh. 17 - Prob. 17.17PCh. 17 - Prob. 17.18PCh. 17 - Prob. 17.19PCh. 17 - Prob. 17.20PCh. 17 - Prob. 17.21PCh. 17 - Prob. 17.22PCh. 17 - Prob. 17.23PCh. 17 - Prob. 17.24PCh. 17 - Prob. 17.25PCh. 17 - Prob. 17.26PCh. 17 - Prob. 17.27PCh. 17 - Prob. 17.28PCh. 17 - Prob. 17.29PCh. 17 - Prob. 17.30PCh. 17 - Prob. 17.31PCh. 17 - Prob. 17.32PCh. 17 - Prob. 17.33PCh. 17 - Prob. 17.34PCh. 17 - Prob. 17.35P
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