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A steel bar is attached to a wood support beam with four 20 mm diameter lag screws. The steel bar is 75-mm-wide by 6-mm-thick. For the steel bar, the yield strength is 260 MPa and the ultimate bearing strength is 350 MPa. The ultimate shear strength of the lag screws is 165 MPa. Factors of safety of 1.70 with respect to yield strength and 3.1 with respect to bearing strength are required for the bar. A factor of safety of 3.0 with respect to the ultimate shear strength is required for the lag screws. Determine the allowable load P that can be supported by this connection. (Note: Consider only the gross cross-sectional area of the bar not the net area.)
Geometric design and construction of a new two-lane two-way road has been recently completed and now it is time for design pavement near Ballarat, Victoria.
Calculate the overall modulus of the composite, explaining your calculations and the assumptions you have made when it is loaded:
How do the concepts of green design, industrial ecology, and sustainable developement differ from past approaches to engineering design Prepare a brief report on this topic using some specific examples for illustration.
Aqueous sodium cyanide wastes at a metal processing industry are to be treated with chlorine and NaOH. Calculate the stoichiometric quantity of CL2 required daily to destroy the cyanide from 5 Kg of NaCN.
The herbicide 2,4,D, is applied to a golf course at a rate of 1.2 kg/ha. The organic matter content of the soil is 1%, bulk density is 1.3 g/cm3, and water content is 0.3.
The elastic ball bounces down a flight of rigid stairs. Determine the height h of the steps if all the trajectories between successive steps are identical. Use e = 0.85 and the initial velocity 6 m/s.neglect friction. (Theta=70 degrees)
At a certain altitude and time, a rocket's acceleration is 2.5 g. One gravity (g) is equivalent to 32.2 ft/s^2. What is the rocket's acceleration in meters per square second
Determine the acceleration when t = 4 s, the displacement from t = 0 to t = 10 s, and the distance the particle travels during this time period.
A direct shear test is performed on a saturated specimen of loose sand. A normal stress equal to 100 kPa is applied and a maximum shear stress of 75 kPa is measured in the shear test. Determine the principal stresses and the orientation of these p..
Axis Chemical Company needs you to design a gravity sewer to convey 1,750 GPM of toxic waste. The pipe is to be glass-lined reinforced concrete (n = 0.009). Which pipe would you suggest the Joker use
A fan blade, initially at rest, rotates with a constant rotational acceleration of 0.9rad/s^2. What is its rotational velocity at the instant it goes through an rotational displacement of 5 radians
In addition to performing the cut-and-fill operations, the contractor needs to excavate the entire building footprint to a depth of 8 feet for a basement construction made of concrete masonry perimeter walls supported by 2'-0" X 0'-10" continuous ..
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