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The settlement analysis for a proposed structure indicates that 6cm of settlement will occur in 4 yr and that the ultimate total settlement will be about 25cm. the analysis is based on the assumption that the compressible clay layer is drained at both its top and bottom surfaces. However it is suspected that there may not be drainage at the bottom surface. For the case of single drainage, estimate (a) the ultimate total settlement and (b) the time required for 6cm of settlement.
In a certain chemical plant, a closed tank contains ethyl alcohol to a depth of 50 ft. Air at a pressure of 25 psi fills the gap at the top of the tank. Determine the pressure at a closed valve attached to the tank 10 ft above its bottom.
a circular steel tube of length L=1.2m is loaded in torsion. If the inner radius of the tube is 45 mm and the measured angle of twist between the ends is 0.4 degrees, what is the shear strain at the inner surface
Methane is compressed in a piston-cylinder device from initial pressure of 110 kPa and an initial temperature of 25 oC to a final pressure of 1,00 MPa. The compression process is polytropic with n = 1 .10.
Deflection of a Beam, If a beam of lenght L is fixed at the ends and loaded in the centre of the beam by a point load of F newtons the deflection
Lift Charts in direct marketing, The mass-mailing business is often used to illustrate the use of lift charts. Another real world application where the lift charts can be used
a power plant burns 150,000 tonnes (1 tonne = 1,000 kg) of coal each year. The coal has 2.5% sulfur content, and the air pollution control equipment removals approximately 94% of sulfur. Assume 10% of the sulfur content ends up in the ash.
The discharge of the river at the basin outlet is measured at an avarage of 650 cfs. assuming that the charge in storage for the system is essentially zero, estimate the ET losses for the area in inches and centimeters for the year
A w14X74 of A992 Steel has a length of 20 feet and fixed ends. Compute the design compressive strength for LRFD and the allowable compressive strength for ASD.
you are designing a highway to AASHTO guidelines on rolling terrain where the design speed will be 65 mi/hr. At one section, a +1.25% grade and a -2.25% grade must be connected with and equal tangent vertical curve.
A hollow circular, gray cast-iron pipe supports a red brass rod and weight W = 2 kips, as shown. The outside diameter of the pipe is d = 6". If the allowable compressive stress in the pipe is 5000 psi and the allowable shortening of the pipe is 0...
For a flow of 2 MGD, an influent BOD of 200 mg/l, a depth of 8 feet, and a desired effluent BOD concentration of 20 mg/l, determine the volume required for trickling filtration treatment as predicted for single-stage treatment by using NRC equatio..
What is the chemical name of the first hazardous air pollutant under Title III regarding the Clean Air Act
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