STUPIDSID
1(a)
Explain the terms partial safety factors for load and partial safety factors for material. Also write the values recommended by IS 456:20000.
4 M
Solve any one question from Q.1(a,b) & Q.1(c,d)
1(b)
Explain the concrete stress block recommended by IS 456:2000 for limit state of collapse in flexure. Derive the expression for level arm for singly reinforced section.
10 M
1(c)
Discuss the assumptions of working stress method of design.
4 M
1(d)
Show that limiting depth of neutral axis for Fe415 is 0.48 times times the effective depth.
10 M
Solve any one question from Q.2(a) & Q.2(b)
2(a)
A singly reinforced R.C. beam has an effective depth of 300mm and a breadth of 230mm. It contains 3-12mm bars. Calculate the shear reinforcement needed for a factored shear force of 100kN. Take M20 grade concrete and Fe415 grade stirrups.
14 M
2(b)
A four span continuous beam, each of span 4m, is subjected to a uniformly distributed load of 20kN/m throughout its length. Design the beam for flexure.
14 M
Solve any one question from Q.3(a) & Q.3(b)
3(a)
Design a slab for a room 5.0 × 4.0m clear in size if the live load is 2kN/m2 and the slab is continuous over two adjacent edges only.
14 M
3(b)
Explain :
a) Application of Yield line theory for analysis of one way continuous slab and
b) Limitations of Direct Design Method for analysis of Flat Slab.
a) Application of Yield line theory for analysis of one way continuous slab and
b) Limitations of Direct Design Method for analysis of Flat Slab.
14 M
Solve any one question from Q.4(a) & Q.4(b)
4(a)
What do you mean by effective length of column? Explain the procedure of estimating effective depth. Design an axially loaded circular column with spiral transverse reinforcement subject to load of 1200kN.
14 M
4(b)
Two columns A And B spaced 3.2m center to center are carrying axial loads of 1500kN and 1250k/n respectively. Column a is of size 500mm × 500mm and column B is of size 450mm × 450mm. Design a combined rectangular footing for the columns and sketch the details. Take bearing capacity of soil as 150kN/m2.
14 M
Solve any one question from Q.5(a) & Q.5(b)
5(a)
Design a dog legged stair case of a residential building for the following given data:
Height between floor =3.0m
Riser = 170mm; tread=275mm
Width of flight= landing width = 1.0m
Live load = 3.0kN/m2
Assume the stairs to be supported on 2.30mm wide beams.
Height between floor =3.0m
Riser = 170mm; tread=275mm
Width of flight= landing width = 1.0m
Live load = 3.0kN/m2
Assume the stairs to be supported on 2.30mm wide beams.
14 M
5(b)
Design a single flight slabless tread-riser staircase for span of 4.5m. Consider the tread as 300mm and riser of 200mm and width of flights as 1.2m.
14 M
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