Section:

Section 1
Section 2
Section 3
Section 4

Question 1:

The images below show two trusses with very different profiles: one is deepest at center span, while the other is shallowest at center span. Write a paragraph formulating a hypothesis to explain this difference.

ISS

ISS

Answer:

The images below show a truss supporting a long escalator; the image on the left is an overall view and the image on the right is a close up looking from underneath. Note that the top chord of the truss is a double member, while the bottom chord is a single member. Write a paragraph formulating a hypothesis to explain this difference.

KM

KM

Answer:

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