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I want you to write 5-8 pages about (Work zone accidents in highways and roads in the U.S ), I want you to have 6-10 references, and want you to include (abstract, intro, background, issues & problems, solutions & recommendation, graphs & data), you will have 48-72 hours to do it.
It is required to dewater a construction site 80 m by 80 m. The bottom of the construction will be 1.5 m below the initial water surface elevation of 90 m. Four pumps are to be used in 0.5-m diameter wells at the four corners of the site.
A 300 N force is applied at A as shown. Determine (a) the moment of the 300 N force about D, (b) the magnitude and sense of the horizontal force applied at C that creates the same moment about D, (c) the smallest force applied at C that creates the s..
An oedometer test on a clay soil gave the following results: Cc = 0.4, Ce = 0.08, OCR = 5. The thickness of the clay layer in the field is 2.6 m. The existing vertical effective stress at the mid-depth of the clay layer is 150 kPa. This vertical effe..
Determine the dimensions of the best hydraulic trapezoidal concrete channel section to convey water at a rate of 2200 gal per min on a channel slope of 0.015 m/m.
A four-lane freeway (two lanes in each direction) is on mountainous terrain with 11-ft lanes, a 5-ft right-side shoulder, interchange spacing of one every 10 miles, and a 60-mi/h base free-flow speed.
Calculate the surface area required for a stabilization pond to serve a domestic population of 1000. Assume 80 gpcd at 210 mg/l of BOD. Use a design loading of 20 lb of BOD/acre/day.
A 30mm pipe X 460 mm rectangular duct carries air. What size square conduit is needed to transport 4m cube per sec of water at a distance of 45m and head loss of of 1.08m.
At a given instant, the position of a plane at A and a train at B are measured relative to a radar antenna at O. Determine the distance d between A and B at this instant.
a ferric chloride dosage of 40 mg/l and an equivalent dosage of lime are used to coagulate a water. (a) how many pounds of ferric chloride per million gallons are used
A two-stage trickling filter plant treats 291.7 m3/h of municipal wastewater that has a BOD5 of 200 mg/L. The two filters have equal dimensions (depth = 1.68 m; diameter = 21.3 m), and each has a recycle ratio of 1.0. If the primary clarifier removes..
a steel tape 30m long at a temperature of 65ordmf when lying horizontally on the ground. its sectional area is 0.082
The water table is lowered from a depth of 10' to a depth of 20' in a deposit of silt. All the silt is saturated, even after the water table is lowered. The silt's water content is 26%.
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