SHREE PRABHAT SECONDARY SCHOOL 1. What is RCC? Why do we use reinforced cement concrete?
Bharatpur-25, Chitwan 2. Differentiate between working stress method and limit state method.
Mid terminal Examination-2079 3. Determine the moment of resistance of singly reinforced RC beam
Subject: RCC Structure Time: 2 hrs. FM: 50 160mm wide and 300mm effective depth reinforced with 4-bars of
Class: XII Civil Eng. PM: 18 16mm.Use M15 concrete and Fe250 steel. (Working stress method)
“Candidates are required to give their answers in their own words as far as 4. Determine the moment of resistance of RCC beam of width 200 mm
practicable. The figures in margin indicate full marks.” and effective depth 400 mm with 3 -20mm bars in tension zone. Use
Attempt all the questions: M15 concrete and Fe415 grade steel. (Limit State Method)
Group: A 5. A 250mmX500mm RC beam is reinforced with 4-20mm diameters
Choose the best alternative to the following questions: [9x1 = 9] bars in both tension and compression side. The effective cover for
1. In the limit state method, the basis of the analysis of structure is
both tension and compression sides are 40mm. Calculate the moment
a) Linear elastic theory b) Non-linear theory c) Plastic method
of analysis d) Involving fracture mechanics of resistance. (working stress method)
2. The modular ratio m is given by:
a) 280/3σcbc b) 280/3σst c) 280/5σcbc d) 280/σcbc Group C
3. The neutral axis of a balanced section is called as: Give long answers to the following questions: [2x8=16]
a) Normal neutral axis b) Balanced neutral axis c) Actual neutral 10. Define moment of resistance and Neutral axis. Explain about under,
axis d) Critical neutral axis balance and over reinforced section with neat stress diagram.
4. If the depth of actual neutral axis is more than critical neutral axis, section 11. Determine the stress developed in steel and concrete of RCC doubly
is reinforced beam 300mm wide and 680mm effective depth reinforced
a) Balanced b) Over-reinforced c) Under-reinforced d)Transformed with 4 bars of 25mm both in tension ad compression. The beam is
subjected to bending moment of 215 KN-m. Assume compression
5. The maximum strain in concrete at the outer most fiber is steel is placed at 40mm from the top of beam. (Use m=13.33)
a) 0.002 b) 0.003 c) 0.0035 d) 0.0025 .
6. For over-reinforced section
a) Xu=Xu,max b) Xu<Xu,max c) Xu>Xu,max d) None ***Good Luck***
7. The diameter of longitudinal bars of column should never be less than
a) 6 mm b) 8 mm c) 12 mm d) 16 mm
8. The characteristic strength of concrete is the strength of materials if its
result is not less than
a) 2% b) 3% c) 4% d) 5%
9. The moment of resistant of an over-reinforced section is:
a) Equal to balanced section b) Less than balanced section c) More
than balanced section d) Less than under-reinforced section
Group B
Answer the following questions: [5x5 = 25]
