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Three-ply asphalt felt and gravel roof over 2in of insulation board is supported by 18in deep precast reinforced concrete beams with 3ft wide flanges. If insulation weights 3lb/ft2and the asphalt roofing weights 5.5lb/ft2, determine the total dead load, per foot of length, each beam must support.
A four-lane urban freeway (two lanes in each direction) is located on rolling terrain and has 12-ft lanes, no lateral obstructions within 6 ft of the pavement edges, and an interchange every 2 miles.
Using the USLE, estimate the annual erosion from a 100 ha. forested watershed assuming the following: R =112 tonnes/ha/year. The forest is in fair condition with 40% cover; Average slope is 3%; The soils are clay loam in hydrologic group C.
For each of the horizons, provide a description of the soil characteristics and briefly describe the environment where you would expect to find the horizon?
Roughly what is the maximum Volume of treated wastewater should you put in the bottle if you want to have at least 2.0mg/l of DO at the test (filling the rest of the bottle with the water
You are to design a chlorination tank for killing microorganisms in the effluent from a wastewater treatment plant. It is necessary to remove 99% of active bacteria in a wastewater flow of 120 m 3 /hr.
Estimate the effective friction angle for the sand (assume c' = 0). Calculate the sand's shear strength (τf) on a horizontal plane at depths of the 20 ft and 50 ft.
Due to a crash at a railroad crossing, an overpass is to be constructed on an existing level highway. the existing highway has a design speed of 50 mi/h.
The inlet of loe pressure turbine is 500Kpa and 500°C. Condenser operates at 10 Kpa. Determine the mass flowrate through boiler needed to produce 5000KW of power.
If the overall gear reduction ratio is 8 to 1, what is the maximum acceleration from rest (in ft/sec^2) for: a) the car with the base engine? b) car with the modified engine? Assume the car is on good dry pavement.
The velocity along a pathline is given by V (m/s) = s^2 x t^(1/2) where s is in meters and t is in seconds. The radius of curvature is 0.5 m. Evaluate the acceleration along and normal to the path at s = 2m and t = 0.5 seconds.
The meter inlet and throat are connected by the two legs of a mercury manometer. Use the Bernoulli equation to describe how this manometer can be used to measure the flow rate through the meter.
An equal-tangent crest vertical curve is designed with a PVI at station 110+00 and a PVC at station 107+43.3. if the high point is station 110+75.5 what is the design speed of he curve?
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