The drawing shows the main system adopted for a flyover which is composed of RC

Question

The drawing shows the main system adopted for a flyover which is composed of RC slabs supported by RC secondary beams. The secondary beams are simply supported on double-cantilever RC frames. The girder of this frame has two 400 mm ledges to support the secondary beam The super imposed dead load including wearing surface, crash barriers and median is 4.00 kN/m2. The live load including impact is 7.00 kN/m2 Ignoring the effect of lateral loads, 1. Calculate the factored DL and LL acting on a typical main frame. What is the value of the total factored load acting on the frame? (15% of the maximum credit) 2. On the shown frame elevation, provide dimensions for the girder (G) and the column (C) (5% of the maximum credit) 3. Sketch a typical main frame showing the statical system and draw the normal force, bending moment, shear force and torsion moment diagrams (if any) for the main frame. (15% of the maximum credit) 4. Specify the critical sections you need to design for such a frame and specify the design values of the straining actions (considering all case of loading and load combinations) acting on these critical (10% of the maximum credit) sections 5. Design a typical frame based on the previously defined critical sections and straining actions. (30% of the maximum credit) 6. Draw to a suitable scale full reinforcement details for a typical frame. Show an elevation for the (30% of the maximum credit) frame with full reinforcement details and all required cross sections for all critical sections 7. Without calculations, on the provided plan show typical reinforcement details for the slabs (5% of the maximum credit) Use a 28d concrete compressive strength fcu of 40 MPa and a steel yield strength Fy of 400 MP:a

Explanation / Answer

DL= bxdxc=16x8x25=3200kn/m3

LL= 4kn/m2=4x1=4kn/m3

FL= 7 kn/m2

Tota load=3200+7+4=3211 kn/m

Factor load=3211x1.5

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