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The weight of a sample of coarse aggregate was measured under various conditions with the following results:
oven-dry weight in air 1076.3 g
air-dry weight in air 1083.3 g
saturated-surface-dry weight in air 1089.2 g
weight of saturated sample in water 681.5 g
calculate
a) air-dry moisture content
b) absorption capacity
c) effective absorption
d) bulk specific gravity
e) saturated surface-dry bulk specific gravity
A fisherperson, pulling on the anchor cord, causes a force on the man of F=(40i+20j-50k)N. If the cord is 30m long,determine the Cartesian coordinates of the anchor at A. Assume that cord OA is a straight line.
A city is subjected to occurrence of hurricane and tornado with the average probabilities of 0.3 and 0.2 per year, respectively. Assume occurrence of these events is statistically independent.
A venturi meter is used to measure flow velocity. Given the manometer reading at A is 100 kPa, D = 10 cm, d = 5 cm, VA = 2 m/s, and specific weight of water is 9800 N/m3.
The drawdown in another observation well 60 m from the pumping well is 1.1 m. Calculate (a) the hydraulic conductivity of the aquifer, (b) the expected drawdown in the pumping well,
To increase your knowledge of the field, prepare a short essay describing GPS use and function when real time layout is used in earth moving construction activities. Specifically, examine site development or highway construction
one gram of pepper is placed into a 100 mL beaker, and the beaker is filled with water to the 100 mL mark. What is the concentration of pepper in mg/L. What should one assume in this problem
A rectangular gate is inclined at an angle of 30 degrees from the horizontal. It is 4 ft wide by 6 feet long. If it is hung from its upper end which is 8 feet below the waters top edge, what minimum applied force (bottom) is needed to open the gat..
Raw primary sludge at a solids concentration of 3% is mixed with waste activated sludge at a solids concentration of 6,000 ppm. The flows are 20 and 25 gal/min, respectively.
The discharge is 15 cubic meters per second with a bottom width=10m and side slopes of 1V:2H. If the discharge is increased to 20 cubic meters per second determine the new depth of flow
An energy efficiency project has a first cost of $300,000, A life of 10 years, and no salvage value. Assume that the interest rate is 9%. The most likely value for annual savings is $60,000. The optimistic value for annual savings is $80,000 with a p..
A 4 in. in diameter shaft moves through a well-oiled sleeve that is 12 in. long. The force required to move the shaft is 25 lbf, and the shaft velocity is 5 in./s.
A person produces about 0.17 pounds of BOD per day in fecal waste. What is the population equivalent of the wastewater flow Based on this calculated population, what would the average daily wastewater production be per person
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