Acs Model Question Paper 1j3549

GUDLAVALLERU ENGINEERING COLLEGE ADVANCED CONCRETE STRUCTURES Department of Civil Engineering Time : 3 Hours

Max. Marks : 60

Note: 1.Answer any ONE question from Part-A 2. Answer any THREE questions from Part-B 3. IS 456:2000 is allowed PART-A

1 x24=24M

1. A reinforced concrete column 400 mm by 400 mm s an axial service load of 1200 kN. The safe bearing capacity of the soil at site is 200 kN/m2. Adopting M25 grade concrete and Fe415 HYSD bars design a suitable footing for the column and sketch the details of reinforcement. OR 2. Design the typical interior of a flat slab floor of size 5.5m x 5.5m with suitable drop to a live load of 5kN/m2 .The floor is ed by columns of size 550mm x 550mm.Use M20 grade and Fe 415 steel .Sketch the reinforcement details by showing cross sections. PART-B

3 x12=36M

3. An orthotropic reinforced grid 12m by 16m is required for the roof of an auditorium. The ribs are spaced at 2m intervals. Live load on roof is 1.5 kN/m2.USE M20 grade concrete and fe415 steel. Design suitable reinforcement and sketch them. 4. Design a counter fort type retaining wall to suit the following data Height of wall above ground level= 6m SBC of soil at site = 160kN/m2 Angel of internal friction = 33° Density of soil = 16 kN/m3 Spacing’s of counter forts = 3m c/c Materials M20 grade concrete and Fe415 5. Design the sidewalls of a 3m by 3m square bunker to store 30 tonnes of coal. Density of coal=9kN/m3. Angle of repose=30 degrees. Adopt M 20 grade concrete and Fe 415 steel.

6. Design the bracings for the elevated rectangular water tank of 4m wide 4m deep and 9m long with 8 columns spaced at 3m cente to centre in plan and braced together at vertical intervals of 2.5m The bottom of the tank is 10m above the ground level. The tank is covered at the top. Bearing capacity of the soil is 150kN/m2. 7. Write the design procedure for deck slab bridge.