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A storm sewer is carrying snow melt containing 1200 mg/L of NaCl into a small stream. The stream has a naturally occurring NaCl concentration of 20 mg/L. If the storm sewer flow rate is 2000 L/min and the stream flow is 2.0 m^3/s, what is the concentration of salt in the stream after the discharge point? Assume: completely mixed conditions, NaCl is conservative, and steady state.
design a cylindrical composite column consisting of some steel rods, and also wrapped in nano-fiber material. The column must support a compressive axial force of 500 kips. The columns length is 5 ft.
A 32mm rebar with a guage length of 200mm was subjected to tension to fracture according to ASTM E-8 method. The load and deformation data were as shown in table below.
a highway reconstruction project is being undertaken to reduce crash rates. the reconstruction involves a major
At a local engineering firm, a supervisor thinks about buying a new copy machine for $700 but only wants to keep it for 3 years. Using the DDB find the book value of the machine at the end of 2 years.
Crude oil, with specific gravity SG=0.85 and viscosityμ = 2.15×10−3 lbf sec/ft2, flows steadily down a surfaceinclined θ = 30 degrees below the horizontal in a film ofthickness h=0.125 in. The velocity profile is given by u =ρg/μ(hy − y2/2)sinθ
A singly reinforced concrete beam has b=24in, d=12in and it is reinforced with 6#9 bars. If f'c=4ksi and fy=60ksi, determine the beam capacity, Mu = fMn.
The elastic modulus is 40 GPa, the yield stress is 150 MPa, the ultimate stress is 525 MPa, and the ultimate strain is 0.38 (mm/mm). Perform the following tasks for this material. compute the tangent modulus between yield stress and ultimate stres..
A concrete mix with a 3-inch slump, w/c ratio of 0.50, and sand with a fineness modulus of 2.4 contains 1700 lb/yd^3 of coarse aggregate. Compute the required weight of coarse aggregate per cubic yard.
Calculate the total head loss for water (25°C) flowing at 100 m3/hr as shown in the following figure. The total flow length is 250 meters and the pipe is 15-cm diameter cast iron pipe
1 discuss the different agencies institutes centers and other national bodies that are involved in environmental work
Determine the height "h" on the wall to which the firefighter can project water from the hose...and the speed of the water at the nozzle is v= 55ft/s. The firefighter is holding the hose 3.5 ft from the ground and the wall is located 15ft from the..
How much extra water does a 21.5 ft, 175-lb concrete can one displace compared to an ultra-lightweight 38-lb Kevlar canoe of the same size carrying the same load
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