QUESTION 2 (17 marks) (a) A thick steel plate is connected to a pair of Grade 300, 125×75×10UA (unequal angle) section through a line of M20 bolts for each of the angles as shown in Figure 2. The pair of unequal angles is subjected to a total tensile force P in kN. The connection is arranged in such a way that the shorter legs of the angles are connected to the thick plate. A cross-section of the unequal angle section is also shown in Figure 2. Determine the maximum force P (that is, the tensile capacity ?Nt) that the angles can take. (9 marks) Grade 300, 125×75×10UA tension member P M20 bolts Thick plate 75 mm 9.5 mm 125 mm Gross area for one angle = 1810 mm² Figure 2
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