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A concrete mix with a 3 inch slump, water cement ratio of 0.50 and sand with fineness modulus of 2.4 contains 1700 lb/yd^3 of coarse aggregate, compute the required weight of coarse aggregate per cubic yard. to adjust the mix so as to increase the compressive strength, the water to cement ratio is reduced to 0.45 will the quantity of coarse aggregate increase,decrease or stay the same ? Explain
A heavy Machine is lowered into a pt by means of a rope wrapped around an 8" diameter stationary pole placed horizontally across the top of the pit. The coefficient of static friction for the rope on the pole is 0.35.
A 100 ft cut steel tape was used to measure between two property markers. The rear surveyor held 93 ft, while the head surveyor cut .67ft. What was the distance between the markers
You add 100 mg/L of glucose to pure water, then decide that this was a mistake and decide to remove it biochemically before you serve the water to your friends at a cocktail party. To remove the glucose, you seed the water with a harmless bacteria..
A 1.5 m diameter culver (concrete barrel, well - rounded entrance) that is 20m long is installed on a slope of 2 percent. The design discharge is 9.5 m^3/sec and the inlet will be submerged but not the outlet.
find a chlorine demand occurring in your drinking water distribution system (series of pipes that carry drinking water throughout a city), yet there is no increased chlorine demand in the water going through the treatment plant
calculate the gravitational force between the earth and the moon in newtons. the distance between the earth and the moon is 384x10^3
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
Determine the allowable moment about the horizontal neutral axis that a timber beam with nominal size 50 X 100 can resist without exceeding the allowable stress of 10 MPa.
A rental company is deciding whether or not to purchase the equipment. The company estimates the equipment will create annual incomes of $110K and have annual operating costs of $20K.
two isotropically consolidated undrained (ciu) triaxial tests, CU1 triaxial tests, CU1 and CU2, were conducted on a normally consolidated (Nc) clay under effective consolidation stresses of 100 and 200 kPa respectively.
The cars have equal mass. Car A is suddenly given velocity 4 m/s and the rope becomes taut. We know that 40 percent of the system's kinetic energy is lost during the rope tensioning.
A hemispherical bowl of radius r connected to a U-tube of constant radius r. Initially the the bowl is empty and the air/manometer liquid interface in both legs is at the level of the bottom of the bowl.
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