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Question: calculate the location of the PNA (plastic neutral axis). Figure 3: (page 5/6) CE 470: Final Exam (12 April 2010) –Structural Steel Design Question 4 (20 marks): Short Answer Questions (marks as noted)
a) (4 marks) What purpose do Lu and Le serve for laterallyunsupported beams and at
what values of Mu do they occur in S16? Provide a graphical sketch and explain. b) (1 mark) What is the baseline moment diagram for a uniformlyloaded simplysupported beam?
c) (1 mark) In Clause 13.3, can the value of be less than 1.0? When and why? d) (1 marks) what is a “halfspace model” and when should its use be avoided?
e) (5 marks) What is the difference between P and P effects in secondorder
analysis? What is the fundamental intent of “notional loads” in design codes? What
magnitude of notional loads is used in CSA S1601? What are the purposes of the
numerator and denominator terms in Clause 13.8.4 of S1601 for calculating U1 for beamcolumns? f)...
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This document was uploaded on 03/30/2014 for the course CE 470 at University of Saskatchewan Management Area.
 Fall '12
 JeffreyKulyk

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