The girder in the frame (Figure 3is subject to a uniform load of w- 3250 N/m ove

Question

The girder in the frame (Figure 3is subject to a uniform load of w- 3250 N/m over its length L 9.5 m Use this frame for Parts A and B below. Part A Moment at the ends of the girder What is the approximate moment in the girder at the face of the column at C? Use the standard sign convention for beams. Express your answer with the appropriate units to three significant figures Mc 15179.33 N m Submit Hints My Answers Give Up Review Part incorrect; Try Again; 5 attempts remaining Part B Maximum positive moment What is the approximate maximum positive moment in the girder? Express your answer with the appropriate units to three significant figures. Maar 26989.2 Submit Hints My Answers Give Up Review Part incorrect; Try Again; 4 attempts remaining

Explanation / Answer

The girder is similar to a uniformly distributed load fixed beam. The support moment is =wl2/12 and the maximum positive moment is at midspan and is equal to wl2/24.

Part A:

Mc=wl2/12 = 3250x9.52/12=24442.71Nm

Part B:

Mmax = wl2/24 = 3250x9.52/24 = 12221.35Nm

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