Question: Problem ( 1 0 0 points ) Consider the loaded beam shown. The cross section is given as W 1 6 x 7 7 .

Problem (100 points) Consider the loaded beam
shown. The cross section is given as W16x77.
FR1=1.5(18)=27 wips
(a) Draw shear force diagram. Make sure to label axes (10p):
(b) Draw bending moment diagram. Make sure to label axes. (10p):
(c) Using the shear force and bending moment at the critical section (4p), and the cross-section (W16x77)
given, determine the bending stress and shear stress at various locations (a,b,c,d) of the cross-section (32p).
Note that points b and c are right below the flange and right above the web respectively. (4p+32p=36p)
(d) Using the bending stress and shear stress at locations (a,b,c,d, determine the maximum absolute shear
stress at each location and in the overall cross-section. )=(14p
(e) Knowing that all=24ksi and all=14.5ksi, select the most economical wide-flange shape that should
be used to support the loading shown. Use MS excel to compare various cross-sections from the App C. Test
five to six different cross-sections, and indicate the best one. (30p)
Appendix C Properties of Rolled-Steel ShapesW Shapes(Wide-Flange Shapes)DesignationW36 X 302135W33 X 201118W30 X 17399W27 X 14684W24 X 10468W21 X 1016244W18 X 106765035W16 X 77403126W14 X 3701458268534338302622AreaA, in88.839.759.234.751.029.143.124.830.620.129.818.313.031.122.314.710.322.616.811.89.137.6810942.724.020.015.612.11.28.857.69(U.S. Customary Units)Depthd, in.37.335.633.732.930.429.727.426.7024.123.721.421.020.718.718.218.017.716.516.416.015.915.717.914.814.314.013.913.714.113.813.96.4913.7Widthb, in.16.712.015.711.515.010.5014.010.012.88.9712.38.246.5011.211.07.506.0010.37.127.005.535.5016.515.510.110.08.068.006.776.735.035.00FlangeThick-nesst, in.1.680.7901.150.7401.070.6700.9750.6400.7500.5850.8000.6150.4500.9400.6800.5700.4250.7600.7150.5050.4400.3452.661.090.8550.7200.6600.5300.5150.3850.4200.335WebThick-nesst, in.0.9450.6000.7150.5500.6550.5200.6050.4600.5000.4150.5000.4000.3500.5900.4250.3550.3000.4550.4300.3050.2750.2501.660.6800.5100.4150.3700.3050.3100.2700.2550.230, in2110078001160059008230399056602850310018302420133084319101330800510111075851837530154401710881722541428385291245199Axis X-XS, in113043968635954126941421325815422712781.620414688.057.613492.264.747.238.460723212310377.862.654.642.035.329.0r in.15.414.014.03.012.711.711.510.710.19.559.028.548.067.847.737.387.047.006.726.636.416.267.076.336.056.015.895.825.875.735.655.54dA wide-flange shape is designated by the letter W followed by the nominal depth in inches and the weight in pounds per foot.I, in130022574918759812844310625970.424857.520.722015240.115.313843.128.912.49.59199067714812157.745.226.719.68.917.00YAppendixC A17Axis Y-YS, in15637.795.232.679.824.563.521.240.715.740.314.06.3739.427.610.75.1226.912.18.254.493.4924187.329.324.214.311.3r, in.3.822.383.562.323.422.103.202.072.911.872.891.771.262.662.611.651.222.471.601.571.

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