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The Hubert H. Humphrey Metrodome in Minneapolis opened in 1982 at a cost of $55 million. To prepare for the footings, et cetera, 30.0x10^5 cubic yards of dirt were removed. The Metrodome's inflatable roof covers 10.0 acres and its interior volume is 60.0x10^3 cubic feet. During construction, 40.0x10^3 cubic yards of concrete, 11.9x10^3 tons of reinforcing steel, and 5.00x10^2 tons of structural steel were utilized. The roof material includes an outer layer of Teflon-coated glass and an inner layer of woven fiberglass. Given this information, answer the following: If removed evenly over the 10.0 acres, how deep a hole in yards would be formed as a result of the excavation? If the two-layer fiberglass roofing material has a mass of 0.667 lbmft2, what is the total mass of the roof in lbm? If 10.0 inches of wet snow collected on the roof (this happened in 1982), what is the added mass on the roof? (Assume 1 inch of water equals 10 inches of snow).
A 3-ft diameter column with weight of 150 kg is placed on top of 1 m thick aggregate layer. The soil beneath the aggregate layer is sand. The friction angle of the aggregate is 36 degrees and the unit weight is 22 lb/ft3. What is the pressure acti..
coal has about 2% sulfur. How many kilograms of sulfur would be emitted from coal fired plints in the US in 1 yr US electricity production is about 0.28 * 10^12 watts, & coal has an energy content of about 30*10^6 J/kg
Air (an ideal gas) enters an adiabatic nozzle at 3 bar and 38 C and exits at 1 bar and -0.78 C. The process is steady. If the velocity at the inlet is 1 m/s, determine the exit velocity and the ratio of the exit area to the inlet area.
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.
A stratified lake could be idealized as two layers: with 7.0 m of fresh water on top and 10.0 m of cold water (specific gravity = 1.02) on the bottom. What are the pressure heads at the interface and at the bottom of the lake, in terms of water col..
An external moment of magnitude 110 N-m is applied in the counter clockwise direction as shown. A frictional moment of magnitude 10 N-m resists the rotation. The specific weight of the material is 250 lbs / ft3.
The maintenance costs begin in 31st year at $300,000 annually. How much must be deposited now if the fund will earn 5% interest. How much does this change if the interest rate is 4%
a silty material is to be used to fill an earth damn. How much water must be added to bring the water content of each ton (2000 lb) of the material to 35% if the original watter content is 11.4%
The plant currently has one CMFR for removal of chromium. How many more identical reactors does the sony music company require to meet the regulatory requirements for chromium discharge of 0.01 mg/L into the Pitman Sewer?
Given a sand with a moisture content of 10%, how much water needs to be added to bring the sand to a moisture content of 20%
What annual investment is required at 8% per year compounded annually to accumulate to $100,000 at the end of 20 years?
A rigid rectangular shelf is suspended from a rigid ceiling by mean of four rods of diameter .505 inches. The two rods to the left L1 and L2, are made of steel. The two rods to the right R1 and R2 are made of aluminum.
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