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A gray silty clay (CL) is sampled from a depth of 12.5 feet.The "moist"soil was extruded from a 6-inch-high brass liner with an inside diameter of 2.83 inches and weighed 777 grams.
a) Calculate the wet density in pounds per cubic feet.
b) A small chunk of the original sample had a wet weight of 140.9 grams and weighed 85.2 grams after drying. Compute the water content, using the correct number of significant figures.
c) Compute the dry density in Mg/m3 and the dry unit weight in kN/m3.
What is the concentration of tracer in the reactor 1 h after tracer addition is terminated? The reactor had an initial concentration of tracer of 1.0 mg/L when tracer addition commenced.
The maximum gage pressure is known to be 8MPa in a spherical steel pressure vessel having a 250mm diameter and a 6mm wall thickness. Knowing that the ultimate stress in the steel used is (sigma u)= 400MPa, determine the factor of safety with respe..
Working a problem where there are two one-story buildings of different heights next to each other. Earthquake imparts a base motion z(t) that is a cosine function. I'm given a shape function for a column of height L when deriving the EOM for each ..
Briefly explain the purpose of the International Space Station, and list the name of all space agencies involved in building and operating it.
A four-lane freeway is on a mountainous terrain with 11-ft lanes, a 5-ft right-side shoulder, and a 3-ft left side shoulder. During the peak hour there are 12% trucks and buses and 6% recreational vehicles.
If the queue clears exactly at the end of the effective green D/D/1 queuing applies, determine the total vehicle delay in the cycle (in veh-sec) .
A worker needs to enter a confined space to tighten the packing on a leaking argon valve. Describe two procedures that could be used to isolate the argon line and valve prior to starting work.
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.
The total flow then moves to a point W on the traction drive two metres off the ground, and travels through a nine millimetre diameter conduit. Ignoring all friction and minor losses, determine the pressures at points H and W.
Compare the total reactor volume required for 90% removal of the same pollutant in a CSTR system that contains a single reactor against a system that contains three CSTR reactors of equal volume in series.
You fill a 2-cubic foot wheelbarrow to the top with aggregate. if the specific gravity of the aggregate is 2.548 and 18% of the aggregate is void spaces, how much does the aggregate in the wheelbarrow weight?
A sample of natural glacial till was taken from below the groundwater table. The water content was found to be 52%. Estimate the wet density, dry density, buoyant density, porosity and void ratio. Clearly state any necessary assumptions.
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