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A rod consisting of two cylindrical portions AB and BC is restrained at both ends. Portion AB is made of steel (E=29x10^6 psi, α=6.5x10^-6) and portion BC is made of aluminum (E=6.5x10^-6 psi, α=13.3x10^-6). Knowing that the rod is initially unstressed, determine (a) the normal stresses induced in portions AB and BC by a temperature rise of 70 degrees F, (b) the corresponding deflection of point B.
its desired to produce 5 cubic yards of cencrete with a ratio of 1:1.8:3.5 of cement, snd, and gravel what are the required amounts of components if 5.5 gallons of water per sack of cement is to be used
Assume that during the analyze stage an obvious solution is discovered. Should that solution be immediately implemented and the remaining steps of DMAIC abandoned?
Tall buildings can develop a significant difference in pressure between the inside and the outside of the building. Air lock entrances are used at the ground level so the pressure at the ground floor is not the same as atmospheric pressure.
Conduct either a qualitative or quantitative risk assessment on this project. Identify the risk factors that you consider most important for the suspension bridge construction. How would you assess the riskiness of the project? Why?
A soil sample with a volume of 0.5 m3, dry unit weight = 18.1 kN/m3, water content = 5%, and Specific Gravity of the soil solids = 2.68. Calculate weight of water added to reach 90% saturation (in kilograms)?
A motorcycle sprocket on the rear wheel has a diameter of 24 cm, and trhe driver sprocket has a diameter of 4.0 cm. The driver sprocket shaft and rear axle are 60 cm apart.
How does the engineering classification of soils differ from he engineering classification of rocks
A 2 m high sandy fill material was placed loosely at a relative density of 47%. Laboratory studies indicated tht the maximum and minimum void ratios of the fill material are 0.92 and 0.53, respectively.
What do you understand by the term durability? Compared to other considerations, how much importance should be given to durability in the design and construction of concrete structures?
calculate the amplitude F0 of the sinusoidal excitation force that is necessary to produce a steady-state vibration with a velocity amplitude of 10 m/s at resonance. what is the corresponding amplitude of the acceleration
Draw a picture of a typical strain gauge and point out the major components. Give a short explanation on the principal behind how a strain gauge works.
a force is specified by the vector F=160i+80j-120k N.calculate the angles made by F with the postive x y and z axes.
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