Question
In: Civil Engineering
Multi-wells are used for dewatering at an excavation site. The dimension of the excavation pit is...
Multi-wells are used for dewatering at an excavation site. The dimension of the excavation pit is 150 m × 200 m. The height of the phreatic level above the impermeable layer before pumping is 15 m. The height of the phreatic level at the center of excavation pit after pumping is 6 m. The soil permeability k = 2.3×10-5 m/s. The wells have a diameter of 200 mm. Determine the number of wells required for this dewatering project
Solutions
Ally Wells answered 1 year agoRelated Solutions
A site investigation was conducted to determine the suitability of the material from a borrow pit...
A site investigation was conducted to determine the suitability of
the material from a borrow pit for a gravel road construction. A
174.33 mm (internal diameter) thin-walled sampling tube was pushed
into the bottom of a trial pit and a 218.72 mm long undisturbed
specimen, weighing 4802.9 g, was obtained. When dried in the oven,
the specimen weighed 4382.99 g. The specific gravity of the soil
grains was measured and found to be Gs = 2.66, Determine the
following:
the...
Define and explain the following terms as used in the solution purification, dewatering and concentration of...
Define and explain the following terms as used in the solution
purification, dewatering and concentration of pregnant solution
after leaching.
i. Sedimentation (Thickening) ii. Flocculation
iii. Coagulation iv. Flotation
v. Solvent extraction
The Wind Mountain excavation site in New Mexico is an important archaeological location of the ancient...
The Wind Mountain excavation site in New Mexico is an important
archaeological location of the ancient Native American Anasazi
culture. The following data represent depths (in cm) below surface
grade at which significant artifacts were discovered at this site
(Reference: A.I. Woosley and A.J. McIntyre, Mimbres Mogollon
Archaeology, University of New Mexico Press).
85
45
75
60
90
90
115
30
55
58
78
120
80
65
65
140
65
50
30
125
75
137
80
120
15
45
70...
A. Calculate the price of pit-run gravel delivered to the site per cubic yard (bank measure)...
A. Calculate the price of pit-run gravel delivered to the site
per cubic yard (bank measure) based on the following data: The pit
is located 10 miles from the site. Trucks cost $43.75 per hour
including fuel and maintenance; they have 12 cubic yards (loose
material) capacity and travel at an average speed of 30 miles per
hour. The swell factor for this material is 15%. Trucks take 5
minutes to unload at the site. The loader costs $82.50 per...
The method of tree ring dating gave the following years A.D. for an archaeological excavation site....
The method of tree ring dating gave the following years A.D. for
an archaeological excavation site. Assume that the population of
x values has an approximately normal distribution.
1299
1201
1299
1320
1268
1316
1275
1317
1275
(a) Use a calculator with mean and standard deviation keys to
find the sample mean year x and sample standard deviation
s. (Round your answers to the nearest whole number.)
x =
A.D.
s =
yr
(b) Find a 90% confidence interval...
The method of tree ring dating gave the following years A.D. for an archaeological excavation site....
The method of tree ring dating gave the following years A.D.
for an archaeological excavation site. Assume that the population
of x values has an approximately normal distribution.
1215 1222 1320 1180 1268 1316 1275 1317 1275
(a) Use a calculator with mean and standard deviation keys to
find the sample mean year x and sample standard deviation s. (Round
your answers to the nearest whole number.)
x =
Incorrect: Your answer is incorrect.
A.D.
s =
Incorrect: Your answer...
The method of tree ring dating gave the following years A.D. for an archaeological excavation site....
The method of tree ring dating gave the following years A.D. for
an archaeological excavation site. Assume that the population of
x values has an approximately normal distribution.
1292
1180
1208
1236
1268
1316
1275
1317
1275
(a) Use a calculator with mean and standard deviation keys to
find the sample mean year x and sample standard deviation
s. (Round your answers to the nearest whole number.)
x =
A.D.
s =
yr
(b) Find a 90% confidence interval for...
the method of tree ring dating gave the following years ad for an archaeological excavation site...
the method of tree ring dating gave the following
years ad for an archaeological excavation site assume that the
population of x-values has an approximately normal distribution
1292, 1229, 1264, 1299, 1268, 1316, 1275, 1317, 1275, hey use a
calculator with mean and standard deviation keys to find the sample
mean year bar X and Sample standard deviation s round your answers
to the nearest whole number do you find a 90% confidence interval
for the mean of altering dates...
The method of tree ring dating gave the following years A.D. for an archaeological excavation site....
The method of tree ring dating gave the following years A.D. for
an archaeological excavation site. Assume that the population of
x values has an approximately normal distribution.
1229
1236
1271
1229
1268
1316
1275
1317
1275
(a) Use a calculator with mean and standard deviation keys to
find the sample mean year x and sample standard deviation
s. (Round your answers to the nearest whole number.)
(b) Find a 90% confidence interval for the mean of all tree ring...
the method of tree ring dating gave the following years AD for an archaeological excavation site....
the method of tree ring dating gave the following
years AD for an archaeological excavation site. assume that the
pooulation of x values has an approximately normal distribution.
1222,1285,1215,1222,1268,1316,1275,1317,1275 what is mean and sd.
find 90% confidence interval for mean of all tree ring dates from
this archaeological site
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