Chapter 9 - Transverse Shear

Objectives Course objective:  To learn to calculate the stresses for beams under various loading configurations. Learning objectives: Isolate the area to be included in the first-moment Q. Calculate the centroid, area moment of inertia, and first-moment Q. Draw the shear-force diagram for the beam. Calculate the shear stress in rectangular (0.86), circular, pipe (0.82) and webbed (i-beam, channel, tee) (0.82) beams. Draw shear-force diagram for simply-supported beam and calculate shear stress in rectangular beam (0.75). Draw shear-force diagram for cantilever beam and calculate shear stress in rectangular beam (0.87). Draw shear-force diagram for simply-supported beam and calculate shear stress in circular beam (0.85). Draw shear-force diagram for cantilever beam and calculate shear stress in circular beam (0.75). Calculate shear stress in webbed beams (1.01). Isolate the area to be included in the first-moment Q for built-up members (1.00). Calculate fastener spacing, fastener stress, or geometry of beam (1.00). The values in orange represent quiz performance.  One represents average.  Values greater than one represent easier topics.  Values less than one represent harder topics.

Concepts  (13 minutes) 1. shear stress in beams video notes 2. built-up beams and shear flow video notes 3. nail guns notes

Demos  (8 minutes) 1. how precise are real fastener spacings video 2. engineered wood strength tests video

Quiz Prep 1. Chapter 8 has a LOT of concepts and different kinds of problems.  It takes a while to get through them all, but be sure to leave enough time for chapter 9. 2. Chapter 9 has essentially only one formula, but a lot of people struggle to correctly calculate Q.

Problems  (91 minutes) assigned 3e 2e 1e aids WP format force analogy   -- -- 09.001 -- -- --   09.001 09.001 09.002 -- -- TENU   09.002 09.002 09.003 -- -- --   09.003 09.003 09.004 -- -- --   -- -- 09.005 -- -- --   09.004 09.004 09.006 -- -- --   09.005 09.005 09.007 -- -- --   09.006 09.006 09.008 -- -- GO   09.007 09.007 09.009 -- -- --   09.008 09.008 09.010 -- -- -- rectangles   09.009 09.009 09.011 -- -- -- yes 09.010 09.010 09.012 strategy solution TENU yes 09.011 09.011* 09.013 video solution TENU   09.012 09.012 09.014 strategy solution TENU yes 09.013* 09.013 09.015 video solution GO yes 09.014* 09.014 09.016 strategy solution TENU   09.015 09.015 09.017 video solution TENU circles yes 09.016 09.016 09.018 video solution TENU   09.017 09.017 09.019 -- -- -- yes 09.018 09.018* 09.020 strategy solution TENU   09.019 09.019* 09.021 -- -- --   09.020 09.020 09.022 strategy solution --   09.021 09.021 09.023 -- -- -- yes 09.022 09.022* 09.024 video solution TENU         09.023   09.023   --   -- -- TENU           --   --   09.025 -- -- --         09.024   09.024   --   -- -- TENU           --   --   09.026 strategy solution --         09.025   09.025   09.027 -- -- --   flanges       09.026   09.026   --   -- -- TENU           09.027   09.027   --   -- -- GO     09.028 09.028 --   -- -- TENU   yes 09.029 09.029 --   -- -- GO     09.030 09.030 09.028 strategy solution TENU   09.031 09.031 09.029 strategy solution -- yes 09.032 09.032 09.030 video solution TENU   09.033 09.033 09.031 -- -- TENU   09.034 09.034 09.032 -- -- TENU   09.035* 09.035 09.033 video solution --   09.036 09.036 09.034 strategy solution -- yes 09.037* 09.037 09.035 video solution TENU yes 09.038 09.038 09.036 -- solution GO   09.039 09.039 09.037 strategy solution -- built-up beams   09.040 09.040* 09.038 video solution TENU   09.041 09.041* 09.039 -- -- --   09.042 09.042 09.040 strategy solution TENU   09.043 09.043* 09.041 video solution TENU   09.044 09.044* 09.042 strategy solution GO   09.045 09.045 09.043 -- -- TENU   09.046 09.046* 09.044 strategy solution TENU   09.047 09.047 09.045 -- -- GO   09.048 09.048 09.046 -- solution TENU   09.049 09.049 09.047 strategy solution TENU   09.050 09.050 09.048 -- solution TENU   09.051 09.051 09.049 video solution --   09.052 09.052 09.050 -- solution GO   09.053* 09.053 09.051 video solution --   09.054 09.054# 09.052 -- -- TENU         09.055   09.055   --   -- -- GO     09.056 09.056* 09.053 -- solution --         09.057   09.057   --   -- -- --     thin-walled members       09.058   --   --   --   --   TENU           09.059   --   --   --   --   --           09.060   --   --   --   --   TENU           09.061   --   --   --   --   GO           09.062   --   --   --   --   --           09.063   --   --   --   --   --           09.064   --   --   --   --   TENU           09.065   --   --   --   --   GO           09.066   --   --   --   --   --           09.067   --   --   --   --   TENU           09.068   --   --   --   --   TENU           09.069   --   --   --   --   TENU           09.070   --   --   --   --   --           09.071   --   --   --   --   TENU           09.072   --   --   --   --   TENU           09.073   --   --   --   --   --           09.074   --   --   --   --   --           09.075   --   --   --   --   --           09.076   --   --   --   --   --           09.077   --   --   --   --   TENU           09.078   --   --   --   --   TENU   * numbers changed between editions # parts (b) and (c) removed in second edition props