Extra Credit (up to 6 post-curve points) – Choose and answe…

 Extra Credit (up to 6 post-curve points) – Choose and answer EITHER A or B A. Define the term “Phase Shift”. Explain the series of phase shifts a shallow tropical coral reef might go through and the reasons for each shift.   B. Provide a brief history of the New England groundfish fishery. Provide the common or scientific name of at least 3 species that were targeted in this fishery.

This problem consists of three questions.  A two-story frame…

This problem consists of three questions.  A two-story frame structure is shown in the figure below. The structure has four beams on the first floor and two beams on the second floor that support a slab. The slab on the first floor is uniform and the slab on the second floor has a skylight hole cut in the center.  There are four columns on each floor. Each floor carries 100 pounds per square foot (psf), which includes the weight of the slab.