CIEG 125 Introduction to Civil Engineering Fall 2005 Midterm Exam - Practice Time allowed: 50 minutes Open book, open notes No cell phones All answers and should be on these pages. Use the backs of pages if necessary, but clearly identify which question your work is associated with. GRADING SHEET – MIDTERM NAME: ________________________ Points awarded Max points Question 1. (20 points) a) b) c) d) 4 4 6 6 Question 2. (20 points) a) b) c) Magnitude Direction 5 5 5 5 Question 3. (25 points) a) Free body diagram b) Equilibrium Equations c) Forces 5 10 10 Question 4. (20 points) Response Rationale Relationship to code of ethics 5 5 10 Question 5. (15 points total) Factor 1 Factor 2 Factor 3 5 5 5 TOTAL 100QUESTION 1. (Short Answer Questions) a. Why should you get civil engineering related work experience during college? b. What is Chi Epsilon? c. What qualifications does a Professional Engineer have? d. At Thanksgiving your aunt will ask you “So, what is Civil Engineering?”. What is your one or two sentences response? QUESTION 2. A 20 kN force is applied at 150o to the horizontal. A 10 kN weight hangs vertically from the same point. The following free body diagram represents the two forces. a. Compute the horizontal and vertical components of the 20 N force. 10 kN 20 kN 150ob. Compute the total force in the horizontal and vertical directions for both the 20 kN and 10 kN forces. c. Determine the magnitude and direction of the resultant force. QUESTION 3. a) Assume the beam above is weightless. a. Draw the free body diagram for the beam. b. Write the equilibrium equations for i. The forces in the vertical direction. ii. The forces in the horizontal direction iii. Moments about the joint A. c. Compute the reactions at A and B by solving the equations in 1 a) b. Assume the beam in the above diagram is weightless. a. Draw the free body diagram for the beam A B 3 m 1 m 8 kN 12 kNb. Write the equilibrium equations for i. The forces in the vertical direction. ii. The forces in the horizontal direction iii. Moments about the joint A. c. Compute the reactions at A and B by solving the equations above QUESTION 4. Chris submitted the report on the safety of the structure for a steel mill in Mifflinburg, Pennsylvania. He is not sure what his boss, Joe, did with the report. What are Chris’ responsibilities in the context of the code of ethics?QUESTION 5. In selecting the design for the Indian River Bridge Inlet, describe three factors that DelDOT took into account. Explain why each factor is important. Factor 1: ______________________ Description (one sentence): Why is this factor important (one sentence)? Factor 2: ______________________ Description (one sentence): Why is this factor important (one sentence)? Factor 3: ______________________ Description (one sentence): Why is this factor important (one
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