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1.When conducting a leveling loop, why is it important to have equal distances from the instrument for the backsight and foresight readings?
2.A 96-in diameter cast iron pipe carries water at 60f. the head loss due friction is 1.5ft per 1000ft of pipe. what is the dischage capacity of the pipe
3.Given the magnetic bearing in 1999= S86degree 36' 14''E with declination 11degree 18'W and 7'East/year. Find astronomic bearing and magnetic for 2011.
What return period must an engineer use in the design of a bridge opening for 50% risk that flooding will occur at least once in two successive years
The flow rate of the treatment plant is 2,000 m3/d. a. Calculate the mass of sodium bicarbonate (NaHCO3) that would be required per day to replace the alkalinity consumed.
If friction between the cars and the rails is neglected, what were the magnitude and the direction of the velecity of the cars after the collision?
The medium contains a wetting phase in equal proportions. Calculate the numerical value of the Leverett J- function for this idealized porous medium. Assume the wall thickness of the capillary tube to be negligible small.
If an additional 11ft lane is added (each direction) and all other factors stay the same, what will be the new level of service?
An industry discharges PCE (tetrachloroethene, tetratchloroethylene, or perchloroethylene) into a small, well-mixed lake. The influent concentration is 0.4mg/L and the hydraulic residence time of the lake is 5days.
water flows into a weigh tank for 30 minutes. Calculate the increase in weight of the tank, if the discharge is 1.5 ft^3/s. The temperature is 50 F.
An activated sludge system treats 1500 m3/day of raw wastewater with a BOD of 250 mg/L. The reactor volume is 375 m3. The kinetic parameters were determined to be: x = 3 day-1, Y = 0.55 kg SS/kg cells, and Ks = 150 mg/L.
a 150 kg mass is suspended by wires from two hooks. the lengths of the wires have been adjusted so that the wires are each 50º from horizontal. assume that the mass of the wires is negligible.
A rectangle channel 20 feet wide carries a discharge Q= 200cfs. Compute the critical depth and critical velocity for the flow in the channel.
The point of intersection of the centerline of Elm Road with the centerline of first Street was originally recorded (using a 30-m steel tape) as being at 6 + 71.225. How far from existing sation mark 5 + 00 on first street would a surveyor have to
What relationship between Atterberg limits and cohesion for Shear test
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