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Calculate the compacted cubic yards per hour if a compactor with a 5-ft drum width travels at 3 mph over a 10-in. lift of aggregate base course with 4 passes required to meet density specifications
A sample of coarse aggregate weights 1072 grams when oven-dried, 1091 grams when saturated surface-dried, and 667.6 grams when submerged. Calculate the bulk specific gravity, apparent specific gravi
A pipe is to be installed under the ground on a bed of aggregate 6 in. thick. The entire weight on the aggregate from pipe and soil above the pipe is 1800 lbs. per linear foot of pipe. What is the p
A 2000-lb wheel load is to be supported by aggregate over soil with a maximum bearing pressure of 1000 lb/sqft. What depth of aggregate is needed if the angle theta is 40 degrees
Calculate the metric tons of gravel required to fill an excavated area 70 meters by 50 meters by 2 meters deep if the gravel has a density of 1890 kg/(m^3).
velocity of water in the nozzle is given by V=2t/(1-.5x/L)^2. L = 4ft. When x=.5L and t=3s what is the local acceleration along the centerline. What is the convective acceleration.
If the 50-kg crate starts from rest and travels a distance of 6m up the palne in 4s, determine the magnitude of force P acting on the crate. The coefficient of kinetic friction between the crate and
Of this total, 2000 acres are residential(CN=68), 500 acres are industrial (CN=88), and 2500 acres are forest with good cover (CN=55). For a design storm of with a total precipitation of 7 inches, e
A hyetograph has a uniform rainfall intensity of 1.5 in/hr in the first hour, 2.0 in/hr in the second, and 0.75 in/hr in the third. Calculate the direct runoff (in inches) using the SCS method. Assu
The two outer bars (material A) are identical. The cross- sectional area of the middle bar (material B) is 31.544% larger than the cross- sectional area of one of the outer bars. Also, the modulus o
Find the uniform flow depth (in feet) of a concrete trapezoidal channel with a bottom width of 30 ft. and side slopes of 2:1. The channel is laid at a slope of 0.05% and carries a design discharge o
Determine the diameter (in inches) and velocity (feet per second) of a concrete storm pipe required to carry a peak flowrate of 20 cfs at a slope of 1.0% Design the pipe to flow at 75% capacity and
consider a spacecraft that is positioned directly between the earth and moon.the mass of the moon's is approximately 7.35 X10^22 kg, and at the instant under consideration, the moon is 3.8 X 10^8 km
A steel tank hold 120 ft^3 of water at atmospheric pressure(14.7psi and 68.4 degrees f). the water is subjected to a 100 fold increase in pressure. determine the initial weight and final density of
10 kPa of pressure required to push a 3 in^2 piston 5 mm into the compacted soil. Compute the CBR (%) if the same 3 in^2 piston required 100 kPa to penetrate 5 mm in calibrated rock soil.
The distance AB is measured as 322.33 ft, the angle at A is measured as 32º15' and the angle B is determined to be 41º30'. Determine the stations of the PC and PT.
Given for a simple curve: R = 500 ft, I = 58º08'40" and the station of the PI is 38+17.25. Set up the field notes for staking out the curve with deflection angles and incremental chords.
each month the splendid dry cleaning company buys one barrel ( 42 gal., 0.160 m^3) of tetrachloroethylene (C2Cl4) (M.W.= 166, p= 1.594 g/cm^3) ninety percent of the fluid is lost to the atmosphere a
A simple horizontal curve of radius 750 ft connects two tangents that intersect at an angle of 66º30'. Compute the parts of the curve, including T, L, LC, E, M, and D.
The faster you try to open a screen door, the more resistance you encounter. When the door is released, the length of the closer decreases linearly with time until it returns to its intial length. D
A vertical gate keeps water from flowing in a triangular irrigation channel. The channel has a 4-m top width and a 3-m depth. If the channel is full, what is the magnitude of the hydrostatic force o
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 diamete
A torque of T = 3.00 kN-m will be applied to the hollow thin-walled aluminum alloy section. If the section has a uniform thickness of 4 mm, determine the magnitude of the maximum shear stress develo
The torsional assembly consists of a solid bronze [G = 49 GPa] segment (1) with diameter d1 = 90 mm securely connected at flange B to solid stainless steel [G = 89 GPa] segments (2) and (3), with di
Determine the velocity ratios that can be achieved by the gear box in terms of number of teeth in the sun wheel and determine which component (out of the sun wheel, planet carrier and annular w