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A 3m deep layer of clay is underlain by impervious rock. An extensive area of fill is to be placed over the site. How long would it take for the clay layer to achieve 90% of its total final settlement
a hollow steel shaft with an outside diameter of 400 mm and inside diameter of 300mm is subjected to the torque of 300 Kn. The modulus of rigidity for the steel is 80 GPa.
a simple horizontal curve has a central angle of 35 degrees-40 minutes-40 seconds, and a degree of cure (arc definiton) of 5 degrees -00 minutes-00 seconds.
Determine appropriate dimensions of the finished water clearwells to achieve adequate disinfection using chlorine. Flow Rate Q = 30 million gallons paer day.
Compute the amount of chlorine required for disinfection in pounds per day(lb/d). Estimate the annual cost for disinfection using chlorine. Flow Rate= 30 milloin gallons per day.
A waste water treatment plant previously used two circular clarifiers for primary settling, each 42 ft in diameter and 12 feet deep. Assume the incoming flow rate was 0.9 MGD. The maximum allowable
A drinking water system treats a flow of 3000 gallons per minute. Consider disinfection of a bacteria by ozone with an inactivation constant of K=0.06/min. To reduce the number of bacteria from 400
A) calculate the steady state P concentration in the lake B)Creek A has been identified as the easiest to control. What would the P concentration have to be reduced to in Creek A, in order to reduce
1. Povide three non-pavement products that use asphalt and by weight, what is the percent that is asphalt 2. Provide three US and two international locations where asphalt or its parent material, cr
The owner of a dive shop wants to purchase a constant displacement air compressor capable of simultaneously filling 10 SCUBA tanks. each having a volume of 0.4 ft^3. in 20 minutes.
Cylinders C and D are attached to the end of the cable. if D has a mass of 600 kg, determine the required mass of C, the maximum sag h of the cable, and the length of the cable between the pulleys A
A small city is evaluating disinfection requirements for their drinking water plant. With an average flow of 5 MGD and a peak flow of 9 MGD, determine the controlling CT factor (virus or giardia) wh
Two activated sludge aeration tanks in Podunk, MO are operated in series. Each tank has the follwing dimensions: 7.0 m wide x 28.0 m long x 3.5 m effective liquid depth.
A cylindrical chimney,1 m in diameter and 2.5 m tall is exosed to a uniform 50km/hr wind at standard atmospheric conditions.End effects and gusts may be neglected.
Two factories are manufacturing and supplying a single type of good to four warehouses. The factories can produce a1, and a2 units of the good each month, and the warehouses need b1, b2, b3, and b4
if D has a mass of 600 kg, determine the required mass of C, the maximum sag h of the cable, and the length of the cable between the pulleys A and B. The Beam has a mass per unit length of 50 kg/m.
If a tractor with 23-hp, a max speed of 3.6 mph in 1st gear and an effieiciency of 92% is operated operated down a 4% slope and the rolling resistance is 80 lb/ton, what is the maximum external pull
Determine the maximum external pull, in each of the four gears, for a tractor with 23-hp, and a max speed of 3.6 mph in 1st gear and a efficiency of 92%. When it is operated over a haul road whose s
A rig accelerates a load of 200000 lbf from zero to 60 ft/min in 5 seconds. compute the load shown on the hook load indicator.
A wheel tractor-scraper is operating on a level grade, assuming no power derating is required for equipment conditions, altitude, and temperature.
A wheeled tractor with high-pressure tires and weighing 74,946 lb is pulled up a 5% slope at uniform speed. If the tension in the tow cable is 13,000 lb, what is the rolling resistance of the road
A pneumatic-tired tractor with a 354 - hp engine has a maximum speed of 3.6 mph in 1st gear. Determine the max. rimpull of the tractor in each gear if the engine effieicency is 91%.
Determine the maximum rimpull of the tractor in each of the indicated gears if the efficiency is 92%. If the tractor is operated over a haul road whose slope is +2.5% with rolling resistance of 80 l
A CAT 834H (rubber tires, high pressure), specs found, is pulled up a road whose slope is +3.0% at a uniform speed. If the average tension in the towing cable is 6,060 lb, what is the rolling resist
A ferrari with 808 hp has a max. speed of 211 mph at 6,300 rpm. the Ferrari weighs 4,155 lb/ton and is operated over a smooth concrete road with a rolling resistance of 40 lb/ton and a slope of 3%.