The saturated unit weight gammasat of the sand is 200 knm3

Assignment Help Civil Engineering
Reference no: EM13384429

A 5 inch (inside diameter) well is to be placed to a total depth of 60 m in an unconfined sand aquifer. The saturated unit weight (γsat) of the sand is 20.0 kN/m3 and the anticipated depth to water in the well during pumping is 20 m below ground surface. Would a #30 slot stainless steel screen (2.0 m long; located at the bottom of the well) have sufficient collapse strength for this application?
Notes:
- assume that the water level inside the well will be the same as the water level immediately outside the well
- to obtain a horizontal soil pressure, the vertical soil pressure (stress) at a given depth must be multiplied by a coefficient of earth pressure, Ko (recall basic soil mechanics ...). Assume this coefficient has a value of 0.50
- use a factor of safety of 1.5

Reference no: EM13384429

Questions Cloud

An unknown gas sample was dissolved in water at 25degc : an unknown gas sample was dissolved in water at 25degc producing a solution with a concentration of 4.7 x 10-4 m at 522
The temperature of a lead fishing weight rises from 15 oc : the temperature of a lead fishing weight rises from 15 oc to 45 oc as it absorbs 22.5 kj of heat. what is the mass of
The block w shown in figure below has a mass of 250 kg bar : the block w shown in figure below has a mass of 250 kg. bar ab rests against a smooth verticalnbspwall at end b and is
What is the volume of the gas in milliliters when the : what is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 634 and
The saturated unit weight gammasat of the sand is 200 knm3 : a 5 inch inside diameter well is to be placed to a total depth of 60 m in an unconfined sand aquifer. the saturated
No crystals form on cooling and so the student pours out : acetaminophen generic name for tylenolreg consists of carbon hydrogen nitrogen and oxygen atoms. a student in an
What is the numerical value for the equilibrium constant : at 800 ordmc keq 0.0100 for the following reaction2so2g o2g 2so3gwhat is the numerical value for the equilibrium
What is numerical value of the equilibrium constant for the : at 700ordmc keq 0.0152 for the following reaction2so2g o2g 2so3gwhat is numerical value of the equilibrium constant
At 25 degrees celsius the first-order rate constant for a : at 25 degrees celsius the first-order rate constant for a reaction is 2.0x103 s-1. the activation energy is 15.0 kjmol.

Reviews

Write a Review

Civil Engineering Questions & Answers

  A photograph is taken of a transverse wave travelling along

a photograph is taken of a transverse wave travelling along a length of rope. at this instant the shape of the wave is

  Structural health monitoring using guided wave propagation

Structural health monitoring using Guided Wave propagation for Detection and Evaluation of Flaws in Pipes.

  Parallel tangents of a reversed curve

The perpendicular distance between two parallel tangents of a reversed curve is 20m. The azimuth of the back tangents of the curve is 270 00 and the azimuth of the common tangent is 310.

  Calculate the change in vertical effective sress on the roof

The foof of the culvert will be located 3 m below ground surface. Currently the groundwater level is at ground surface. But, after installation of the culvert, the groundwater level is expected to drop 2 m below ground surface.

  Compute the shear modulus for the aluminum

The elastic portion of the tension stress-strain diagram for an aluminum alloy. The specimen used for the test has a gauge length of 2 in and a diameter of 0.5 in. When the applied load is 9 kips, the new diameter of the specimen is 0.49935 in.

  Determine the layout for a set of no-3 u-stirrups with fy

A concrete beam that is simply supported sustains a uniform live load of 1.8 kips/ft and a uniform dead load (not including self weight) of 1 kips/ft on a span of 24 ft. Determine the layout for a set of No.3 U-stirrups with Fy=60 ksi and F'c=3.5 ..

  Determine number of bolts necessary to make max shear stress

Assuming that the shear stress in the bolts is uniform, determine the number of bolts necessary to make the maximum shear stress in the shaft equal to the shear stress in the bolts. Each bolt has a diameter d.

  What would be the salt concentration be in the brine

A reverse osmosis plant desalinates 5*10^6 L/day of feedwater containing 1500 mg/l of salt, yeilding 3*10^6L/day of product water with 75 mg/l of salt. What would be the salt concentration be in the brine

  Calculate the resolved shear stress acting on the slip plane

A single crystal of a FCC metal is oriented so that the [001] direction is parallel to an applied stress of 35.0 MPa. Calculate the resolved shear stress acting on the (111) slip plane in the [110], [0-11], [10-1] slip directions.

  Calculate max velocity and subsequent max altitude

A single-stage rocket is launched vertically from rest, and its thrust is programmed to give the rocket a constant upward acceleration of 6 m/s^2 . If the fuel is exhausted 20 s after launch, calculate the maximum velocity and the subsequent maxim..

  Find the horizontal and vertical forces exerted on the poll

What is the maximum weight that can be suspended on a 16 Kg poll, 3/5 from the end. The maximum tension of the 30 degree guy-wire is 1500 N. Find the horizontal and vertical forces exerted on the poll by the hinge.

  What is the pressure drop per unit length along the tube

It is known that the velocity distribution for steady, laminar flowin circular tubes (either horizontal od vertical) isparabolic. Consider a 10 -mm- diameter horizontal tubethrough with ethyl alcohol is flowing with a steady mean velocity.15 m/s.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd