12 mm

1.4 (B). A cantilever of length 2 m is constructed from 150 mm x 100 mm by 12 mm angle and arranged with its 150 mm leg vertical. If a vertical load of 5 kN is applied at the free end, passing through the shear centre of the section, determine the maximum tensile and compressive stresses set up across the section.

1.5 (B). A 180 mm x 130 mm x 13 mm unequal angle section is arranged with the long leg vertical and simply supported over a span of 4 m. Determine the maximum central load which the beam can carry if the maximum stress in the section is limited to 90 MN/m2. Determine also the angle of inclination of the neutral axis.

What will be the vertical deflection of the beam at mid-span? E = 210 GN/m2. [8.73 kN, 41.6°, 7.74 mm.]

1.6 (B). The unequal-leg angle section shown in Fig. 1.20 is used as a cantilever with the 130 mm leg vertical. The length of the cantilever is 1.3 m. A vertical point load of 4.5 kN is applied at the free end, its line of action passing through the shear centre.

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