Subject: Composite Structure  What is concrete filled steel tube (CFST)?  Describe the basic mechanical behaviour of CFST. The proper cases for buildings with CFST.  Examples for bridges with CFST

Beams that are part of the seismic force resisting system (concrete moment frames) often have about the same reinforcing at the top and bottom of the beam because: Question 1 options: earthquake forces can load the building in any horizontal direction the top reinforcement helps to confine the concrete when subjected to earthquake forces the "balanced" reinforcing distributes earthquake forces more evenly the added reinforcing steel gives the beam significant additional strength

Explain how a composite beam (concrete deck and steel beam) loaded in flexure would behave if an insufficient number of shear studs was provided to achieve full composite action. Provide as much detail as possible describing the behavior

Give two examples for church composites are used for non- structural applications

Subject: Composite Structure What is concrete encased steel column and what are the benefits (CESC)? Illustrate the primary steps to verify the resistance of composite column under compression. Try to derive the buckling equations of the compressive column with the second order theory.

Determine the location of the centroid of the blue-shaded composite shape. The reference x-axis and y-axis are shown. Dimensions are in millimeters.

Reinforced concrete is approximately how many times heavier than wood typically used for construction?   Question 5 options:   2   3   4   5

Lightweight Concrete Present and Future applications

Aluminum is a poor material to reinforce concrete with, especially as opposed to steel.  There are five primary reasons why; Cost, strength, and stiffness are the first three.  Please name the fourth and fifth reasons and then please explain in detail what would occur if these two were done.

Concrete