Find the maximum compressive axial force in member GH .

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EXAMPLE 6-16 The beam shown in Fig. 6-29a has a cross-sectional area in the shape of a channel, Fig. 6-29b. Determine the maximum bending stress that occurs in the beam at section a-a. 2.6 kN 13/12 2 m (a) 1 m. y=59.09 mm N 15 mm- -250 mm- C 20 mm AT 200 mm -15 mm

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Chapter 9, Problem 9P

To determine

Find the maximum compressive axial force in member GH.

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EXAMPLE 6-16 The beam shown in Fig. 6-29a has a cross-sectional area in the shape of a channel, Fig. 6-29b. Determine the maximum bending stress that occurs in the beam at section a-a. 2.6 kN 13/12 2 m (a) 1 m. y=59.09 mm N 15 mm- -250 mm- C 20 mm AT 200 mm -15 mm

0.3 m 6.9 through 6.12 For the beam and loading shown, consider sec- tion n-n and determine (a) the largest shearing stress in that section, (b) the shearing stress at point a. in Fig. P6.10 15m 12 16 a 10 KN 180- 16 t Dimensions in mm Fig. P6.11 |-8--8--8- 100 40 mm 0.6 m 100 mm 200 mm ======== =======: [11 160 kN 0.9 m 0.9 m- 12 mm 150 mm 12 mm

4.18. Consider the balcony-type structure shown in Fig. 4-23. The horizontal balcony is loaded by a total load of 80 kN distributed in a radially symmetric fashion. The central support is a shaft 500 mm in diameter and the balcony is welded at both the upper and lower surfaces to this shaft by welds 10 mm on a side (or leg) as shown in the enlarged view at the right. Determine the average shearing stress existing between the shaft and the weld. Ans. 2.5 MPa 94 DIRECT SHEAR STRESSES [CHAP. 4 80 kN 10 mm -500 mm 10 mm Fig. 4-23 500 mm