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Write Darcy's equation in 2-D. There are three piezometers in an unconfined sand aquifer as shown below. The head measurements at A = 104.56 ft, B = 104.53 ft, C = 103.42 ft. The rate of recharge he
Piezometer A is located 3000 feet due south of piezometer B. Piezometer C is located 2000 feet due west of piezometer B. The surface elevations of A, B and C are 480, 610 and 545 feet respectively.
a rainstrom lasts for 90 min at a constant intensity of 3.2 in/hr over a five acre parking lot. a detention pond is used to store all of the runoff from the parking lot and cannot be deeper than 2 f
The car's position is defined by the position vector, where . The image below shows the system projected onto the x-y plane. What are the car's velocity and acceleration vectors at this position
Compare bar charts and precedence diagrams in terms of the ease with which activities can be added to the schedule.
What are the effects of degree of hydration on capillary pore volume, capillary pore size, porosity, permeability, and compressive strength of hydrated cement (Degree of hydration: hydrated cement/t
What are the effects of reducing w/c on porosity, permeability, and compressive strength of hydrated cement. Porosity: capillary pore volume/total volume of hydrated cement specimen
Under the right conditions, it is possible, due to surface tension, to have metal objects float on water. Consider placing a short length of a small diameter steel (sp. wt. =460 lb/ft^3) rod on a su
When a fluid flows through a sharp bend, low pressures may develop in localized regions of the bend. Estimate the minimum absolute pressure (pmin in psi) that can develop without causing cavitation
Carbon dioxide at 30 C and 320 kPa absolute pressure expands isothermally to an absolute pressure of 170 kPa. Determine the final density of the gas.
An important dimensionless parameter concerned with very high-speed flow is Mach Number, defined as V/c, where V is the speed of the object such as airplane or projectile, and c is the speed of soun
A blimp is approximated by a by a sphere of 25 m in diameter. Estimate the weight of 15°C gas within the blimp for (a) helium at 1.1 atm; and (b) air at 1.0 atm. What might the difference betwee
Determine the components Fa and Fb of the 4.2 kN force along the oblique axes a and b. Determine the projections Pa and Pb of F onto the a- and b-axes.
The elevation of Y is 5265.879 ft. The elevation of X is required. Instrument at X: +S = 3.182,-S = 9.365,9.370, and 9.368. Instrument at Y: +S = 10.223; -S = 4.037,4.041, and 4.038. Find the elevat
A 100% saturated soil has a void ratio of 1.33 and water content of 48%. Find the unit weight of soil in lb/ft^3 and specific gravity of solids
A 100% saturated soil has a wet unit weight of 112.8 lb/ft^3, and its water content is 42%. Find the void ratio and specific gravity of solids.
The city of Lancaster's water distribution system has 3 wells for water supply. There are 10 pumps at these wells. It is estimated that a pumping rate of 10,000 gallons per minute is needed to satis
The window is to be bolted onto the vertical wall of the pool and faces outward, covering a 2ft diameter opening in the wall. The venter of the opening is 4ft below the surface.
The length of the wire is 7,000 m, the weight density of the steel is 78 kN/m3 and its ultimate stress is 620 MPa. Find the safety factor of the wire against breaking from its own weight.
determine by trigonometry (a) the required tensoin T2 in the left hand portion if the R of the force exerted by the cable at A is to be vertical, (b) the corresponding magnitude of R.
A cone penetration test has been conducted and has measured a con resistance of 85 kg/cm^3 at a depth of 10m. the vertical effective stress at this depth is 159KPa and the over consolidation ratio i
A garage (24 ft x 24 ft x 10 ft) is illuminated by (6) 60 watt incandescent bulbs. It is estimated that 90% of the energy to an incandescent bulb is dissipated as heat. If the bulbs are left on for
A carbon steel tank, 6ft. inside diameter X 10 ft. long with a 3/8 inch wall, is sitting on evenly spaced rolls and 4 evenly spaced supports (2 on each side). What is the horizontal force excerted o
The pipe assembly is secured on the wall by the two brackets. If the flower pot has a weight of 50lb, determine the magnitude of the moment produced about the x, y and z axes.
Two materials (wrought iron, ks = 0.046 mm, and galvanized iron, ks = 0.15 mm) are being considered for a new pipeline. The expected discharge is 0.15 m3/s. Both the head loss and cost are sought fo