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Estimate the land area (in acres) that must be purchased by a city to construct a new municipal landfill. The city has a stable population of 235,000 residents and the design criteria for the new landfill are as follows: MSW generation rate = 4.0 lb/(person-day); density of the compacted MSW in the landfill is 775 lb/yd3; the average depth of waste in the landfill is 50 ft; landfill life should equal 20 years. Finally, assume that 40% of the total land area must be used for roads, buildings and buffer zones.
CALCULATE THE REQUIRED DIAMETER OF STEEL TIE RODS NECESSARY TO SUPPORT A BALCONY. EACH ROD, SUSPENDED FROM A ROOF TRUSS, SUPPORTS A FLOOR AREA OF 7.0m^2. THE COMBINED BALCONT FLOOR LOAD IS 10.5 kPa
Rigid members ABC and DEF are joined with steel links BE and CF using 25mm pins. The links are made of 25mm thick 50mm wide plates and are single shear. Determine the maximum normal stress in each of links BE and CF
Knowing that the coefficient of kinetic friction between a sled and the run is 0.10 and that the speed of the sled is 25 ft/s at B, determine the tangential component of the acceleration of the sled a) just before it reaches B, b) just after it pa..
Compare the physical migration of workers during U.S. industrialization and present-day intellectual transition into a new type of workforce.
a layer of clay, 5m thick, overlies a deposite of sand, 5m thick, which is underlaid by rock. the water table in the sand is sub-artesian with a level at 2m below fround level. the saturated unit weights of the clay and sand are 21 and 16 KN/m^3 r..
assume hydrostatic uplift varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe. consider 1m length of dam.
Calculate the depreciation using straight-line, double-declining-balance (DBB), and MACRS (current IRS regulation) methods; and tabulate the depreciation schedule.
The factory will use a 4 ft deep on-site lagoon to stabilize the waste with a loading rate of 20 lb BOD/acre-day. Part a) What is the total BOD loading per day?
Two particles start from the same point along the same straight line and at the same instant. The first particle travels with a constant velocity v and the second with a constant acceleration.
What do you understand by the term durability? Compared to other considerations, how much importance should be given to durability in the design and construction of concrete structures?
The depth to water in A is 210 ft, in B is300 ft, and C is 230 ft. Determine the direction of ground water flow through the triangle ABC and calculate the hydraulic gradient. If the aquifer hydraulic conductivity is 30 ft/day, estimate how far gro..
A simple curve has a central angle of 42degreess. A point Y is located 24m from the vertex and has a perpendicular distance of 3.00m from the back tangent.
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