{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

CE130 - Midterm Solutions

# CE130 - Midterm Solutions - CE/CEM130 Fall 2008 Dept of...

This preview shows pages 1–3. Sign up to view the full content.

CE/CEM130 – Fall 2008 Name: _________________________________ Dept. of Civil Engineering & CEM California State University, Long Beach Midterm Exam (Total = 100 pts) Highest = 100 Lowest = 30 Average = 80.5 Circle the most appropriate answer for the following questions (5 pts each). Note: Please provide your calculations (if any), for partial credits, in the space given under each question: 1. Levels and rods can be used to determine ____________ A) differences in elevations B) horizontal angles C) vertical angles D) All of the above 2. Using a clinometer, Joe measures a 40 o vertical angle to Bill standing on top of a nearby hill. It took Bill 712 paces to get to the top of the hill and 714 paces coming back. If Bill's calibrated pace is 2.66 ft/pace, the height of the hill Bill climbed from where Joe stands is _________ A) 1450 ft B) 942 ft C) 1219 ft D) 1590 ft Aveg number of paces = (712 + 714)/2 = 713 paces Slope distance = 713 x 2.66 = 1896.58 ft Height of the hill = 1896.58 x (sin 40 o ) = 1219 ft 3. Sin(56° 18' 31" ) or sin(66 o 28’41”) approximately is: Sin(56 + 18’/60 + 31”/3600) = sin(56.3086) = 0.8320 Sin(66 + 28’/60 + 41”/3600) = sin(66.4780) = 0.9169 4. Refer to the Figure of level rod: The rod reading is ____________________ Reading = 1.85 ft 1 50.2 ft EN2

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern