A 12-inch well penetrating a 100-ft thick eenfinedr aquifer is pumped at a rate of 100 gpm for 10 years. Determine the drawdown of 100-ft from the well. The storage coefficient of the aquifer is 0.001, permeability 500 gpd/ft, r/B = 0.2, and porosity= 0.3?

Describe in detail the chemicals used in the pre-treatment, post-increment and membrane cleaning (CIP) stages used in desalination plants where ro membranes are used, and their intended use.

(do not copy others answers on chegg if you don't want to negative score)

Compare the methods used in limit balance analysis, indicate their advantages or deficiencies.

how do you like to learn the bridge engineering (300 words)

introduction and explanation of of pipe network using HARDY-CROSS

1. what are prestressed concrete structures?
2. what are pretensioned and posttensioned concrete structures?

What isthe area and perimeter of a rectangular field and its estimated error for the following recorded values:(a)1233.89±0.03ft by 1032.65±0.04f

Explain how fatigue and breakage occur.
b) In general, describe the two measures to be taken to prolong fatigue life.
c) A cylindrical ductile cast iron rod, repeated push-pull stress along its axis
It is subjected to the cycle. 107 cycles of fatigue breakage under F = 10,000N load amplitude
Calculate the minimum allowable rod diameter to ensure that it does not occur even at the end. 107
The fatigue limit for this cast iron in the number of cycles is 220MPa. The safety factor in this question is N =
Assume it is 2.
d) How to increase the fatigue performance of carbon steel?

Plan a perfect 3bhk apartment for site of dimensions 30*40 and 30*50. Even provide the detailed quantity requirement of diffent materials for assumed building.

Q1. Gradually varied flow of water in a wide rectangular channel with a per unit

width flow rate of 1 m3

/s-m and a Manning coefficient of n = 0.02 is considered.
The slope of the channel is 0.001, and at the location x=0.0, the flow depth is
measured to be 0.80 m. (a) Determine the normal and critical depths of the flow and classify the water surface profile, and (b) calculate the flow depth y at
x=1000 m by integrating the GVF equation numerically over a range 0≤x≤1000
m. Repeat part (b) to obtain the flow depths for different x values, and plot
surface profile

Q2.

A triangular gutter whose sides include an angle of 60°, conveys water at a
uniform depth of 25 cm. If the discharge is 0.04 m^3
/sec, workout the bed gradient of the trough. Use Chezy’s equation with C=52 m
^1/2/sec

a) Consider a plane strain formulation. Show that the plain strain problem satisfies the
following equation:

?^?(?_? + ?_?) = −?/? − ? (??_?/?? + ??_?/??)

b) Consider a plane stress formulation. Show that the plain stress problem satisfies the
following equation:

?^?(?_? + ?_?) = −(? + ?) (??_?/?? + ??_?/??)

(Hint: You may use the equations given below
?????? ∶ ??? = ??,? + ??,?
??????: ??? = 2???? + ???????
?????? ???????????: ???,? + ?? = 0
All the terms have their original meanings)

How can you obtain coefficient of permeability? Classify and define briefly. Please use sketches when necessary.