Question

For the below beam draw the shear and moment diagram. On work submitted to the ELC show a free body of the beam with all of its loads as well as the shear and moment diagrams. Label all points. Use the sign convention used in class. Assume that the cross-section of the beam is made out of a material with an allowable stress of 24 ksi. The cross-section is b inches wide and d inches tall. The b dimension is 0.6 times that d dimension of the beam.

Beam Forces "a" = 4 (k), "b" = 12 (k/ft.) and 7 (k).

On your work submitted through the ELC:

a) Draw the shear and moment diagrams for the beam. Label all points.

b) Determine the dimensions of the cross-section. Indicate the values of b and d.

The beam reactions are :   R(A) = 39.46666666666667 (k)            

                                          R(D) = 46.53333333333333 (k)

To go to the next problem type the number 8 in the blank provided:______

b (k) c (k/ft) a (k/ft.) b (k) A B с D R(A) R(D) 5 ft. 2 ft. 2 ft. 6 ft.

can someone help me with this strengths problem?

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Answer #1

12k 12k 4klft Iklft A K me sft Baffet ofte E 6f7-40 SVO RA + Ry = 4x5 +12+12+7x6 = 86k EMA=0) - RD (15) + 776)(12) + 12(7) +sign Convention for sheas the ve Reacting SED 39.46 k 19.46 1.46k A B -4.534 -4.534 1-46.53k Bending moment : Section AB at n-6 169.2664 147.33 153.19 kft А stt 247 eft oft B E C - -ve - Hogging = = Sagging U= = the М. I colo M= 162.26 kft I a bd3 12

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