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Parallel pipes, fixed overall H, ?EGL or hl = 75'. Elevated Tank A water surface is at El 625, 3000' away is Tank B with free surface El 550 They are connected by a 12" dia cast iron pipe.
Determine the size PFR and CFSTR's required to treat 4000 m3/day of sewage with a BOD of 200 mg/L. State law requires a minimum of 92% removal and BOD follows first order kinetics.
The town of Obfisquitory wishes to use 4 equal volumes of CFSTR's in series to disinfect 2 million gallons per day (mgd) of water containing 1000 coliforms/L to the maximum required concentration (M
What is the maximum length of trench that can excavated by hand economically rather than by a trenching machine. it cost 900.00 to transport a trenching machine to the job and back to the storage ya
An automobile having a mass of 900 kg initially moves along a level highway at 100 km/hr relative to the highway. It then climbs a hill whose crest is 50m above the level highway and parks at a rest
An object weighs 289.2N in air and 186.9N in oil of specific gravity is 0.75 find its volume and relative denesity
What is the maximum length of trench that can be excavated by hand economically rather than by a trenching machine. It will cost $900.00 to transport a trenching machine to the job and back to the s
Hypothetically, upon leaving the filling station, tire pressure for each tire on the 18-wheeler was measured as 105 psi (gauge), and the wheel contact area with the ground was a 6.0 in by 7.0 in rec
Determine the normal stress in the rails when the temperature reaches 48oC assuming that the rails (a) are welded to form a continuous track (b) are 10m long with 3 mm gaps between them.
A tidal channel, which may be assumed to be rectangular, is 40 m wide and conveys a discharge of 60 m3/s at a depth of 1.52 m. A tidal bore is seen to propagate upstream with a wave speed of 5 m/s.
As a design engineer you are responsible for all the drawing documentation from your organisation. What are the key aspects of the drawing you need to check before sending it to the construction di
What roles should technical experts like water engineers play in public policy decision-making issues, such as water demand management, water reuse and associate water quality issues
Determine the design compressive strength for a pinned ended HSS 8x8x3/8 column of ASTM A500, grade B steel with an unbraced length of 35ft
A stream conveying a flood peak of 50 m3/s (velocity 1.25 m/s and depth 1 m) is divided into 1 km long reaches for solution of the unsteady equations. Determine the largest value of ft for which the
the cash flow sequence $70+4k, where k is in years and cash flow is in $1000. What is the future work of the entire cash flow series in year 10 at 10% per year
IT IS DESIRED TO RETRACE THE LINE WITH A COMPASS TODAY, WHEN THE DECLINATION IS 5 35'E. WHAT READING OF THE COMPASS SHOULD BE USED TO RETRACE THE LINE
THE MAGNETIC BEARING OF A BOUNDARY LINE WAS RECORDED AS N35 00'W IN A DEED DATED 1903. AT THAT TIME AND PLACE, THE MAGNETIC DECLINATION WAS KNOWN TO BE 3 15'W
A total of 500 mm of rain fell on a 75 ha watershed in a 10 hour period. Compute the average rainfall intensity and the total volume of rain that fell on the watershed.
The country town with service area of 150 ha is sewered, and the main outfall sewer is laid on a grade (slope) of 0.003 m/m to a treatment plant. Effluent from the treatment plant is at present disc
In determining the difference between points A and B, the inclined distance was measured to be 157.65 ft. The transit was set u on point A. The height of its transverse axis was 5.2 ft about point A
Compare the relative contributions of a treated water supply and the collection, treatment and disposal of human wastes towards the control of epidemic diseases in developing countries
Two rectangular primary sedimentation tanks each 27 m long, 5 m wide and 3.8m deep treat 6000 m3/day wastewater from a community. Total effluent weir length is 50m (both tanks).
List some of the advantages and disadvantages of rectangular primary sedimentation tanks over circular sedimentation tanks which must be considered prior to the selection
During the summer months (December - March), the town population increases to 9,000 people due to holiday makers. The population growth rate was expected to be 1.5% per year
What is the full capacity of the sewer. At what depths of flow in the pipe are the velocities of flow equal to 0.6 m/s. Assume Mannings constant n = 0.013.