Reference material in the form of textbooks, class notes and completed homework

Question

Reference material in the form of textbooks, class notes and completed homework assignments is allowed during this exam. Do all calculations in pencil. Partial eredit may be given for incorrect answers if your work is legible and it shows an understanding of basic concepts. The maximum number of points for this exam is 100. True/False (15 pts) 1. For the steel commonly used in rebar, stress is proportional to strain until a stress of 0.45 fe is 2. When the loads on a floor system are being assessed, the weight of moveable partitions is considered part of the dead load. 3. The Modulus of Elasticity of a material is essentially a measure of its stiffness. 4. When an under-reinforced beam is loaded to failure, the concrete on the compression side of the neutral axis will fail by crushing before the reinforcing on the tension side reaches its yield point. 5. When a beam is loaded to failure, the ACI Code assumes that the maximum strain developed in the concrete on the compression side of the neutral axis is.005 inches per inch. 7. In the Mass State Building Code, one of the determining factors for the magnitude of snow load to apply to the roof is the geographic location of the building. 8. Snow is an example of live roof load. 9. Regardless of the 28 day compressive strength, all concrete can be assumed to have the same Modulus of Elasticity 10. When the dead loads on a building frame are being assessed, the weight of HVAC ductwork, g, wiring and el the area of each floor of the building. _11. When wind forces act on the vertical sides of a building, the wind creates suction on the windward surfaces. 12. To account for snow drifts that may pile up on a roof with a parapet wall, the Mass State Building Code requires that in addition to a uniform load, a concentrated point load applied to the roof where it will cause the worst effect.

Explanation / Answer

Answer 1- True

Answer 2- False

Answer 3- True

Answer 4- True

Answer 5- False

Answer 6- True

Answer 7- True

Answer 8- False

Answer 9- True

Answer 10- False

Answer 11- True

Answer 12- True

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