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Need help with E and F please.

3. The beam shown in the figure below is carrying superimposed dead load of 25 kN/m and use and occupancy load of 45 kN/m. For preliminary analysis, assume a self weight of 10 kN/m. We are required to find the maximum positive (tension at the bottom) and negative (tension at the top) moments due to the factored loads, and then design the beam CIV E 374-RC-Lab 3 Fall 2018 (a) Determine the maximum positive and negative moments in the beam. Assume the superimposed dead load, self-weight, and live (occupancy) loads act simultaneously in all spans (b) Determine the maximum positive factored moment in the beam (factored live load on (c) Determine the maximum negative factored moment (factored live load on cantilever (d) Draw the moment envelope for the beam under factored loads. This is, create a momert (e) Design a rectangular beam (use b-450 mm) to carry both the factored positive moment span AB only) span) diagram that combines (not add) the maximum effects in cases (a), (b), and (c) and factored negative moment. Check the assumed self weight of the beam in (a). Make any adjustment for the weight if necessary. Use normal weight concrete of 30 MPa and 400 MPa steel reinforcement. (f) Determine the locations of the theoretical cut-off points of the reinforcements for the positive and negative moment regions. These are the points in which we no longer need the reinforcement 8500 2500

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