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Design rectangular sections for the beams, loads, and values given. fy=50000psi, f'c=3000 span of l=28 ft, dead load not including beam weight = 3 k/ft, live load=3 k/ft, p*=0.5pb, concrete weights=150 lb/ft cubed, use h=d+2.5 inch, assume beam weight =10kN/m and phi=0.90
Design a horizontal curve with a 40-degree central angle (delta=40) for a two-lane road with 11-ft lanes. The design speed is 70 mi/h and superelevation is limited to 0.06ft/ft. Give radius, degree of curvature, and length of curve
The long-term average January precipitation in the Colorado River basin is 1.11 inches, with a standard deviation of 0.60 inches. Assuming a normal distribution, what is the probability that less than 0.5 inches of precipitation will occur in any ..
The company would like to distribute the songs between the two CDs such that the used space on each CD is about the same. Formulate the problem as an IP, and find the optimal solution.
Calculate the force (in Kn) a punch press must exert if it is to punch out a large washer from a strip of 5-mm thick sheet steel with an ultimate shear strength of 400 MPa.
A tray rests on an extendible arm consisting of two steel tubes with two different outer diameters. The downward force at the tray center F0 = 1000 N. Determine the downward deflection of the tray center and the tilt angles of the tray about each ..
How appropriate might a just in time inventory system be for a product such as roller skates?
if the sludge concentration in the return sludge line from the secondary clarifier were the same as the MLVSS concentration.WOULD recycle of return sludge increase the sludge age why
Suppose that a water treatment plant has a Parshall Flume with a 4 ft wide throat. a) If the upstream depth of the water (ha) is 1 ft and the depth of the water in the throat section (hb) is 0.65 ft, what is the flow rate in gpm
A large drainage channel has a trapezoidal cross section with a bottom width of 75 feet and bank side slopes of 4:1 (H:V). If the normal depth of flow is 25 feet, compute the normal flow rate through the channel (Q in cfs).
How much of a reduction in the automobile emission rate would be required to achieve the maximum eight-hour average NAAQS for CO at steady state 9ppmv (10.3 mg/m3)?
Field tests have shown that the Horton equation best describes the composite roughness of the channel. Find the capacity of the main channel and the lateral extent of the floodplains for a 100-year flow of 1590m^3/s.
The outer surface of the tank is cooled by air at 300 K with a heat transfer coefficient of 100 W/m2K. Determine the maximum temperature in the tank. Take the thermal conductivity of the wastes as 2.0 W/mK.
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