Discuss the strategic considerations for MRT decisions with respect to planning, finance, management and pricing.
Transportation Engineering
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In: Civil Engineering
In: Civil Engineering
describe the difference between yield stress and ultimate stress of a steel element
In: Civil Engineering
In: Civil Engineering
In: Civil Engineering
Why is grit removal important as a procedure in wastewater plants?If conventional grit removal systems are designed to remove particles larger than 0.210 mm and specific gravity of 2.65, why are particles this size and larger often found downstream? Explain.
In chemical disinfection of drinking water,what is breakpoint chlorination? Explain.
In: Civil Engineering
In: Civil Engineering
In: Civil Engineering
Situation: The town of Waterville has the following past population data projected beyond 1990.
Year 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990
Population 10,240 12,150 18,430 26210 22,480 32.410 45,050 57,200 64,030 77,320
The average water consumption (including every possible sector) is 160 gal/cap-day in 2005. The town has a wastewater treatment plant (WWTP) with a treatment capacity of 20 MGD. Due to the rapid growth of the population, the town is planning to build a new WWTP assuming that the old WWTP will not be used any more after the new WWTP is operating.
Requirements: You are hired by the town as an engineer to do the planning. You need to (1) estimate the future populations using any reasonable method; (2) estimate the future wastewater generation rate (e.g., in the units of gal/cap-day); (3) estimate the initial year and design year of the new WWTP; (4) the average, maximum, and minimum daily and hourly flow rates for the initial and design year under both dry and wet weather conditions; (5) assume that the wastewater generated by the town is of medium strength, estimate the BOD5, COD, SS, VSS, TKN, Total P, and alkalinity (as CaCO3) in the raw wastewater to be treated by the new treatment plan.
In: Civil Engineering
In: Civil Engineering
In: Civil Engineering
Q11.a. Calculate the cost of a foundation with length x width x
thickness dimensions of 1000 x 1200 x 600 mm. Concrete of ratios
1:4:8 will be made and mixed at site with a mixer machine. Assume
the following: [8.5]
• The manpower service rate for casting the concrete OMR 13 / cubic
meter.
• The formwork rate is OMR 5 OMR / square meter.
• The diesel consumption for the mixer machine is 3 liters /
hour.
• The diesel machine needs to work for 4 hours to mix concrete for
one foundation.
• The average price of diesel is OMR 0.277 / liter.
• The share of the rent of the mixer machine is OMR 6.500 for one
foundation.
• Steel is to be excluded from this calculation.
• Prices for the raw materials are as follows:
o Cement: OMR 1.700 / bag
o Sand: OMR 15 / cubic meter
o Aggregate: OMR 18 / cubic meter
In: Civil Engineering
In: Civil Engineering
In: Civil Engineering
Explain the modes of failure with different factors influencing the decrease in shear strength of slope. Draw neat sketches wherever necessary.
In: Civil Engineering