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Question 5. A pile cap is 1000 mm thick, and (1.60 x 1.60) m in plan. It is supported by four circular piles each of diameter 250 mm. The pile cap is supporting a bridge pier of size (400 x 400) mm. The ultimate value of the vertical reaction passed on to the pile cap is 8,000 kN (including the self- weight of the pile cap). The spacing between the piles along a gridine is 1.30 centre-to-centre, The positions of the pier and piles are symmetric over the plan of the pile cap. a. Draw plan and section showing the arrangement based on the above information in a professional manner, showing all the necessary dimensions and details, b. Draw the representative strut-and-tie model for any two-pile system along a gridline. And find the tensile force that has to be resisted by the reinforcement in one direction. (Take effective depth of the pile cap as 800 mm)