Question: Q9. Consider an elevated concrete floor slab that is 85 mm thick. Sheathing will be actual 19.1 mm { inch) plyform class 1, with grains

Q9. Consider an elevated concrete floor slab that is 85 mm

Q9. Consider an elevated concrete floor slab that is 85 mm thick. Sheathing will be actual 19.1 mm { inch) plyform class 1, with grains facing across supports. Nominal 50 x 200 mm (2 8 inch) Hemlock - fir will be used for joists, and nominal 100 x 200 mm (4 x 8 inch) Southern pine will be used for stringers. Commercial 20_8 kN shores will be used. Assume that all members are continuously supported over two spans. Maximum deflection of form members will be limited to {/240. Use the minimum value of live load permitted by ACI being 2.4 kPa, and ensure the minimum design load permitted by AClof 4. B kPais considered. Given that centre to centre (c/fc) joist spacing is 730 mm governed by bending, and c/c stringer spacing is 1,980 mm governed by bending, determine: al The maximum allowable concrete density. (S Marks) b} The cfc shore spacing, assuming concrete density is 2,403 kg/m3. The maximum spacing value is required to be rounded to the nearest 10 mm. (4 Marks) {Type in your final answers in the text box below, and upload full handwritten calculations to the Moodle immediately after you have submitted the quiz.)

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