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1.A river is 6 m deep. The riverbed material has a saturated unit weight of 19.5kN/m3. What is the effective vertical stress 12 m below the water surface?
2.The solids in a specimen have a specific gravity of 2.65. If the oven-dry mass of the specimen is 25 kg, what is the volume of the solids in it?
3.What is the dry unit weight, the saturated unit weight, and the buoyant unit weight, of a soil having a void ratio of 0.5 and a value of Gs of 2.7?
A radioactive waste from a clinical laboratory contains 0.2 μCi (microcuries) of calcium-45 (45Ca) per liter. The half-life of 45Ca is 152 days.
The traffic that makes a left turnat an intersection consists of two types of vehicles, Type A andB. A type A vehicle is twice the length of the type B. THe left turn lane can accommodate ten vehicles of type B, five oftype A.
Find the change in depth and in absolute water level produced by a) a smooth upward step of 1 ft b) a smooth donward step of 1 ft, in the channel bed c) find the maximum allowable size of thw upstream flow to be a possible as specified
Part of a vertical piping system consists of 8 ft of 4 in diameter, connected to 8 ft of 3 in diameter above, and connected to 8 ft of 2 in diameter above that. Water at 60 F flows up the pipe (no downward flow occurs)
The aquifer is inhomogeneous with K = 12+0.006x, where x =0 at point 1, and the piezometric heads at point 1 and 2 are 14.2 m and 18.8 m, respectively measured above the upper confining layer.
What force is necessary to lift a thin 25-mm diameter ring out of :
Say the availability of supply is 60% to, and through Tank “A”, and 40% supplying tank B. Is this close to the transmission capacity within the system to J and C? If not, what do you suggest?
A pump of 80% efficiency lifts water from one large open tank to another; the difference in water surface elevations is 20 feet. The pipe is relatively smooth (f = 0.0122), and has 3 elbows, each with a loss coefficient of 2/3.
What are the important findings in Austin Road Co. v. OSHRC and Builders Steel Co. v. Marshall? Your response should be approximately 200 - 300 words and include a reference citation for your response.
prepare a capstone report for designing of steel building using aisc 14 edition manual. the capstone report contents
If the length of the river connection between the two lakes is equal to 3km and the velocity in the river is equal to 0.4 m/s, determine the concentration of UBOD in the effluent from the second lake.
A pond is used to treat a dilute municipal waste-water before the liquid is discharged into a river. The inflow to the pond has a flow rate of Q = 4,000 m3/day and a BOD concentration of Cin = 25 mg/L.
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