Final Exam(April2010) - (page 1/6 CE 470 Final Exam(12...

CE 470: Final Exam (
12
April
2010
) –Structural Steel Design
(page 1/6)
_________________________________________________________________________________
Department of Civil & Geological Engineering
University of Saskatchewan
CE470
.3
FINAL EXAMINATION
Monday 9:00am, 12 April 2010, Room 232 PAC Building
Time Allowed = 3 hours Instructor: M.M. Hrabok
Student Name: Number:
Notes: How many booklets and other sheets handed in: ______________
• this is a “closed book examination” except the Student is allowed to bring in the CSA-S16-
01
CISC
Handbook of Steel Construction (9
th
Edition) but not the Class Notes . Calculators are permitted but
not any other computational aids or electronic devices which transmit, receive, record or replay, etc.
• cross-reference all answer sheets to the questions and hand these in with your exam.
• answers/calculations are complete only if the numbers are accompanied by units.
• draw and use sketches freely to explain and support your calculations.
• use the Tables in the Handbook to your advantage.
• units are [ mm ] and [ MPa ] unless noted otherwise.
• the exam consists of 4 questions (not all equal marks) and 6 pages for a total of 100 marks.
Question 1
(30 marks)
: Cantilevered Beam with a Welded Connection
A 4-metre long W310x74 ( W12x50 ) steel cantilever beam is welded to a “rigid support”
with an E49xx 8mm fillet weld all-around as shown in Figure 1 . Section properties for
the member are given in the Handbook on page
6-52
.
The steel grade is “50 ksi” with
,
F
y
=345 MPa, F
u
=450 MPa.
Draw a free-body diagram for each of the load cases below, and according to CSA-S16-
01
, assign to each load case the maximum load which you would permit on this member:
a) axial load P
x
? b) lateral load P
y
? c) vertical load P
z
?
d) torsional moment (torque) M
xx
? how is this torque carried along the length of the
beam? sketch the shape of the torque-carrying mechanisms and label each one.