Cork Institute of Technology
Bachelor of Engineering in Civil Engineering – Stage 2
(CCIVL_7_Y2)
Summer 2009
Structural Engineering - Old Syllabus
(Time: 3 Hours)
Instructions:
Five questions to be answered.
Answer two (i.e. both) questions from Section A.
Answer one question from Section B.
Answer two questions from Section C.
Examiners: Mr. A. M. Conway
Mr. J. Lapthorne
Mr. J. Kindregan
Section A
1. Determine the forces in each of the members of the pin-jointed framework shown
in Figure Q1. Indicate whether the forces are tensile or compressive.
(20 marks)
2. (a) Draw the shear force and bending moment diagrams for the beam as
shown in Figure Q2 (a) noting all significant values. (10 marks)
(b) If the cross-section of the beam is as shown in Figure Q2 (b), determine
the locations and values of the maximum tensile and compressive stresses in the
beam. (10 marks)
Section B
3. (a) Determine the load capacity of the connection shown in Fig. Q3 (a).
Assume that the shear planes pass through the threaded area of the bolts.
p
y = 275 N/mm2 ps = 160 N/mm2 p
b = 435 N/mm2
(10 marks)
(b) Determine the plastic section modulus, Sx of the steel beam
section shown in Fig. Q3 (b). If py = 325 N/mm2, calculate the moment capacity,
Mc of the section. (10 marks)
