a. What is the the largest moment at any of the points resulting from all the load combinations? b. What is the the smallest (largest negative) moment at any of the points resulting from all the load combinations? Give the result in absolute value.

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a. What is the the largest moment at any of the points resulting from all the load combinations?

b. What is the the smallest (largest negative) moment at any of the points resulting from all the load combinations? Give the result in absolute value.

Moment Envelopes
The following table contains the bending moments (kip-ft) at three points in a
beam. The beam is symmetric, so we only monitor the end, the quarter point, and
the middle.
Dead
|-7.81
6.84
Live
|-12.50
10.94
Earthquake
24.00
x/L
1/4
12.00
1/2
11.72
18.75
0.00
Apply the load combinations for dead, live, and earthquake. Then find the minimum
and maximum moment at each point. It is advisable to use a spreadsheet to speed
up your calculations and to correct errors more easily.
Once the calculation is finished, answer the two questions. Give all answers in
absolute value (no negative signs).
Transcribed Image Text:Moment Envelopes The following table contains the bending moments (kip-ft) at three points in a beam. The beam is symmetric, so we only monitor the end, the quarter point, and the middle. Dead |-7.81 6.84 Live |-12.50 10.94 Earthquake 24.00 x/L 1/4 12.00 1/2 11.72 18.75 0.00 Apply the load combinations for dead, live, and earthquake. Then find the minimum and maximum moment at each point. It is advisable to use a spreadsheet to speed up your calculations and to correct errors more easily. Once the calculation is finished, answer the two questions. Give all answers in absolute value (no negative signs).
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