Note:l. Answer any FIVE full questions, choosing ONE full question from each module.
2. Assume any missing data suitably
3. IS 456: 2000 and SP -16 are allowed.
Module-1
--- Content provided by FirstRanker.com ---
1 a. Explain the following with sketch.(i) Characteristics load (ii) Characteristics strength (iii) Partial safety factors. (06 Marks)
b. Enumerate various limit states to be considered in design and explain briefly. (04 Marks)
c. With neat sketch of stress ? strain Diagram write the assumptions made in limit state
designing. (06 Marks)
--- Content provided by FirstRanker.com ---
OR2 a. What is Stress block? Derive expression for stress block parameters. (06 Marks)
b. Explain briefly about balanced, under reinforced and over reinforced sections with strain
Diagram. (04 Marks)
c. Explain: i) Short term deflection ii) long-term deflection iii) Slenderness limits for beam
--- Content provided by FirstRanker.com ---
lateral stability. (06 Marks)Module-2
3 a. Differentiate between singly reinforced and doubly reinforced beams, and list the situation
in which doubly reinforced section are used. (04 Marks)
b. A rectangular Reinforced concrete beam of size 300mm x 550mm is simply supported over
--- Content provided by FirstRanker.com ---
an effective span of 7mtr, is reinforced with 4 bars of 20mm diameter. Determine maximumsuper imposed UDL which can be carried by beam apart from its self weight, and also find
area of tension steel to be modified to make section an balanced section. Use M20 grade
concert and Fe 415 steel. Assume effective cover for tension steel 50mm. Density of RCC
25kN/m
--- Content provided by FirstRanker.com ---
3. (12 Marks)
OR
4 a. Write the expressions for moment resisting capacity of flanged sections for various cases of
Neutral axis depth with respect to Depth of Flange. (06 Marks)
--- Content provided by FirstRanker.com ---
b. A rectangular beam is 250mm wide and 500mm deep, is reinforced with 3 bars of 20mm diabars in compression zone. Determine the area of tension reinforcement needed to make the
section fully effective. Also find the moment of resistance of section. Assume M20 Grade
concrete and Fe 415 steel, cover for reinforcement is 50mm. (10 Marks)
Module-3
--- Content provided by FirstRanker.com ---
5 a. Brief about codal provisions made in providing longitudinal and lateral reinforcement inbeams. (04 Marks)
b. A simply supported rectangular beam is supported on 300mm wide walls, over a clear span
of 6mtrs. Design the beam by using M25 grade concrete and Fe 415 Grade steel.
Superimposed load on beam is 15kN/m and breadth of beam is 230mm. (12 Marks)
--- Content provided by FirstRanker.com ---
1 of 2FirstRanker.com - FirstRanker's Choice
Mg
15CV51
Fifth Semester B.E. Degree Examination, D
--- Content provided by FirstRanker.com ---
USNDesign of RC Structural Elements
Time: 3 hrs. Max. Marks: 80
Note:l. Answer any FIVE full questions, choosing ONE full question from each module.
2. Assume any missing data suitably
--- Content provided by FirstRanker.com ---
3. IS 456: 2000 and SP -16 are allowed.Module-1
1 a. Explain the following with sketch.
(i) Characteristics load (ii) Characteristics strength (iii) Partial safety factors. (06 Marks)
b. Enumerate various limit states to be considered in design and explain briefly. (04 Marks)
--- Content provided by FirstRanker.com ---
c. With neat sketch of stress ? strain Diagram write the assumptions made in limit statedesigning. (06 Marks)
OR
2 a. What is Stress block? Derive expression for stress block parameters. (06 Marks)
b. Explain briefly about balanced, under reinforced and over reinforced sections with strain
--- Content provided by FirstRanker.com ---
Diagram. (04 Marks)c. Explain: i) Short term deflection ii) long-term deflection iii) Slenderness limits for beam
lateral stability. (06 Marks)
Module-2
3 a. Differentiate between singly reinforced and doubly reinforced beams, and list the situation
--- Content provided by FirstRanker.com ---
in which doubly reinforced section are used. (04 Marks)b. A rectangular Reinforced concrete beam of size 300mm x 550mm is simply supported over
an effective span of 7mtr, is reinforced with 4 bars of 20mm diameter. Determine maximum
super imposed UDL which can be carried by beam apart from its self weight, and also find
area of tension steel to be modified to make section an balanced section. Use M20 grade
--- Content provided by FirstRanker.com ---
concert and Fe 415 steel. Assume effective cover for tension steel 50mm. Density of RCC25kN/m
3
. (12 Marks)
OR
--- Content provided by FirstRanker.com ---
4 a. Write the expressions for moment resisting capacity of flanged sections for various cases ofNeutral axis depth with respect to Depth of Flange. (06 Marks)
b. A rectangular beam is 250mm wide and 500mm deep, is reinforced with 3 bars of 20mm dia
bars in compression zone. Determine the area of tension reinforcement needed to make the
section fully effective. Also find the moment of resistance of section. Assume M20 Grade
--- Content provided by FirstRanker.com ---
concrete and Fe 415 steel, cover for reinforcement is 50mm. (10 Marks)Module-3
5 a. Brief about codal provisions made in providing longitudinal and lateral reinforcement in
beams. (04 Marks)
b. A simply supported rectangular beam is supported on 300mm wide walls, over a clear span
--- Content provided by FirstRanker.com ---
of 6mtrs. Design the beam by using M25 grade concrete and Fe 415 Grade steel.Superimposed load on beam is 15kN/m and breadth of beam is 230mm. (12 Marks)
1 of 2
15CV51
OR
--- Content provided by FirstRanker.com ---
6 a. What is Torsion? Write expression for equivalent bending moment and equivalent shearforce for members subjected to torsion. (03 Marks)
b. A T-beam slab floor has 125mm thick slab forming a part of T-beam. The end bearing are
450mm wide. Clear span is 8m. Spacing of T-beam is 3.5m clear. Live load on floor is
31cN/m
--- Content provided by FirstRanker.com ---
2Design an intermediate beam. Use M20 Grade concrete and Fe 415 steel. (13 Marks)
Module-4
7 a. What is Development length? Write expression for Development length of MS and HYSD
bars. (04 Marks)
--- Content provided by FirstRanker.com ---
b. Design a cantilever balcony slab having projection of 1.25mtr from beam face. Consider liveload on slab 31cN/m
2
and floor finish lkN/m
2
--- Content provided by FirstRanker.com ---
. Use M20 grade concrete and Fe 415 steel.Calculate the development length of main steel to be embedded. (12 Marks)
OR
8 a. Differentiate between one way and two way slab, and mention codal provisions for steer_
reinforcement in slabs. (03 Marks)
--- Content provided by FirstRanker.com ---
b. Design two way slab for a room of size 4m x 5m. The slab is simply supported over 300mmthick wall. Live load and floor finish on slab is 4kN/m
2
and 1 kN/m
2
--- Content provided by FirstRanker.com ---
respectively. Cornersare held Down. Use M20 Grade concrete and Fe 415 Grade steel. (13 Marks)
Module-5
9 a. What are the codal provision to design longitudinal and lateral reinforcement for columns.
(06 Marks)
--- Content provided by FirstRanker.com ---
b. A RC column of size 300mm x 400mm is 5 mtrs long is effectively held and restrainedagainst rotation at both ends subjected to an ultimate load of 1100kN and ultimate moment
of 150kN-m about major axis. Design column by using SP -16 for 2 side and 4 side
reinforcement arrangement. Use M25 Grade concrete and Fe415 steel. (10 Marks)
OR
--- Content provided by FirstRanker.com ---
10 Design a RC Footing for column size 400mm x 400mm, which carries a maximum load of800kN. SBC of soil is 200kN/m
2
, If one side of footing is to be restricted to 1.50 mtr. Us
M20 grade concrete and Fe 415 Grade steel. (16 Marks)
--- Content provided by FirstRanker.com ---
,2>
2 of 2
FirstRanker.com - FirstRanker's Choice
--- Content provided by FirstRanker.com ---