Soil is excavated from a borrow to construct an embankment with a net volume of 50,000 cy with 95% of Modified Proctor maximum dry density of 110 pcf with a Modified Proctor optimum water content of 8%. Dry density of soil in borrow 114 pcf. Soil specific gravity 2.35. Water content in borrow 16.5%. What would be the minimum number of truckloads required to transport the soil from the borrow? Each truck holds 8.2 cy of soil with void ratio of 1.12.

Calculate the wet unit weight in pounds per cubic feet : A gray silty clay (CL) is sampled from a depth of 12.5 feet. The "moist" soil was extruded ffrom a 6-inch high brass liner with an inside diameter of 2.83 inches and weighed 777 grams. |

Find the height and the width of the triangular soil bank : A ditch having a cross-sectional area of 50 square feet is being excavated in common earth. The soil’s angle of repose is 35° and its swell is 25%. Find the height and the width of the triangular soil bank that will result from the trench excavation |

What is the volume of the required soil excavated : Soil is excavated from a borrow to construct an embankment with a net volume of 50,000 cy. This is performed by compacting 12-in layers of the soil to a dry weight of 110 pcf at a moisture content of 18%. |

What is the pulling force in lbs to be applied for one of : Two steel plates were constructed in warm weather. Due to temperature change, a 1/32" hole mismatching occurred. What is the pulling force, in lbs, to be applied for one of the plates to match the two holes The plate length is 3 ft (from the left end.. |

What would be the minimum number of truckloads required : Soil is excavated from a borrow to construct an embankment with a net volume of 50,000 cy with 95% of Modified Proctor maximum dry density of 110 pcf with a Modified Proctor optimum water content of 8%. |

What is the maximum price per ton the company : A company uses a 50% solution of NaOH to maintain the pH of water circulated in one of its furnace exhaust scrubbers. The cost of the solution is $200 per ton f.o.b. (free-on-board). |

In which water is sprayed directly into the exhaust duct : The exhaust from a rotary kiln hazardous waste incinerator must be cooled from 1200 degrees C to 300 degrees C before entering a spray dryer for acid gas removal. |

How far in advance of the curve must the sign be located : Drivers must slow down from 65 miles per hour to 55 miles per hour to negotiate a severe curve on a rural highway. A warning sign for the curve is clearly visible for a distance of 110 feet. |

Determine in the rate of carbon 14 : In dating using radiocarbon, the amount of C^14 remaining at the time of measurement is expresed as a percentage of modern carbon. For example that the 30% modern carbon |

## Do any of the three viscoelastic models comes closetThe faster you try to open a screen door, the more resistance you encounter. When the door is released, the length of the closer decreases linearly with time until it returns to its intial length. Do any of the three viscoelastic models |

## Calculate the change in length of a 30m measuring tape madeCalculate the change in length of a 30m measuring tape made of steel when its temperature changes by 84 F. The coefficient of thermal expansion for steel is x = 3.1 x 10^-6 per C |

## Calculate the maximum acceleration bungee experiencesA 55 KG bungee jumper leaps from a bridge. She is tied to a bungee cord that is 12 m long when unstretched, and falls a total of 31 m. Calculate the spring constant of the bungee cord assuming Hooke's law applies. |

## What is vertical stress increment due to the load at a pointA concentrated load of 200 kips is applied to the ground surface. What is the vertical stress increment due to the load at a point 15 ft below the ground surface at a horizontal distance of 10 ft from the line of the concentrated load |

## Equilibrium partial pressure of benzene in gasBenzene is to be absorbed from coal gas by means of a wash oil. The inlet gas contains 3% by volume of benzene, and the exit gas should not contain more than 0.02% benzene by volume. The suggested oil circulation rate is 5 kg oil per 1m3 of inlet gas.. |

## A sewage treatment works stwA sewage treatment works (STW) with 4 single-stage trickling filters has become organically overloaded due to the discharge of a biodegradable industrial effluent to the STW. This is causing effluent to pond on the surface of the filters. |

## Determine the maximum theoretical speed that may be achievedDetermine the maximum theoretical speed that may be achieved over a distance of 60 m by a car starting from rest, knowing that the coefficient of static friction is 0.80 between the tires and the pavement |

## Derive expression for entropy produced written in terms of tAn isolated system contains an incompressible substance with heat capacity C = kT, where k is a constant. The system is initially divided in two parts, with 1/3 of the mass at T1 and 2/3 of the mass at T2. |

## Estimate value of emission rate divided by the wind speedA ground level source is emitting pollution. An air sampler is located 1 km downwind and 0.5km crosswind of the source measures the concentration of the pollutant ant ground level as 10 micrograms/cubic meter. |

## Calculate the carbon concentration in steps of 0.2 mmThe decarburization of carbon from a steel with an overall composition Co = 0.3wt% carbon can be expressed by the equation: Cx= Co.erf(z). If the steel is decarburized in vacuum at 1000 C for one hour, calculate the carbon concentration in steps of 0.. |

## Cstr reactors of equal volume in seriesCompare the total reactor volume required for 90% removal of the same pollutant in a CSTR system that contains a single reactor against a system that contains three CSTR reactors of equal volume in series. |

## What is the resulting solids concentrationRaw 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. What is the resulting solids concentration? |

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