## Guess Paper 1: Design of Concrete Structure Fall – 2020 Past Papers

Time Allowed: __3 hours__

Total Marks: __70, Passing Marks (35)__

Q. 1 State whether the statements given below are true or false. (14)

a) ACI Stands for American Consumer Institute.

b) Water to cement ratio is inversely proportional to strength.

c) In one way slab load is transferred in both directions.

d) Doubly reinforced sections contain reinforcement only at compression section.

e) Column can be in tension.

f) Type II cement is Rapid Hardening Cement.

g) The separation of ingredients of concrete is called bleeding.

Q. 3: Write in detail about the reinforcing steel types and its properties. Also write about the types of cement in detail. (14)

Q. 4: A rectangular beam has dimensions b=10”, h=25” and d=23” and reinforced with 3 #8 bars. Given that fc’=4 ksi and fy=60ksi. Determine the nominal and design moment capacity for the beam. (14)

Q. 5: Define concrete, what are its ingredients and state good quality of concrete. (14)

Q. 6: Design a 12 ft simply supported slab to carry a uniformly dead load (excluding self-weight) of 120 psf and a uniform live load of 100 psf. Use fc’=3ksi and fy=60ksi and ACI Code limitations. (14)

Q. 7: Design a circular spiral column to support an axial dead load of 500 K and a live load of 230K. Use fc’=4ksi and fy=60 ksi and a steel ratio of about 3%. Also design the necessary spirals. (14)

Q. 8: Write short notes on any two of the following. (7, 7)

a. Types of Cracks in RC Frames.

b. Serviceability requirements.

c. Steps of Direct design method.

## Guess Paper 2: Design of Concrete Structure Spring – 2019 Past Papers

Time Allowed: __3 hours__

Total Marks: __70, Passing Marks (35)__

Q. 1 State whether the statements given below are true or false. (14)

a) In one way slab load is transferred in both directions.

b) Doubly reinforced sections contain reinforcement only at compression section.

c) Column can be in tension.

d) The separation of ingredients of concrete is called workability.

e) Water to cement ratio is directly proportional to strength.

f) Type II cement is Rapid Hardening Cement.

g) ACI Stands for American Consumer Institute.

Q. 2: Write in detail about the reinforcing steel types and its properties. Also write about the types of cement in detail. (14)

Q. 3: A reinforced concrete simply supported beam has a span of 30’ and supports service dead load of 1000 lbs/ft and a uniform service live load of 1100 lbs/ft in addition to its self-weight. Design a beam section to resist the factored external bending moment. Given fc’=4 ksi and fy=60ksi. (14)

Q. 4: A rectangular beam has dimensions b=10”, h=25” and d=23” and reinforced with 3 #8 bars. Given that fc’=4 ksi and fy=60ksi. Determine the nominal and design moment capacity for the beam. (14)

Q. 5: Design a circular spiral column to support an axial dead load of 500 K and a live load of 230K. Use fc’=4ksi and fy=60 ksi and a steel ratio of about 3%. Also design the necessary spirals. (14)

Q. 6: Design a 12 ft simply supported slab to carry a uniformly dead load (excluding self-weight) of 120 psf and a uniform live load of 100 psf. Use fc’=3ksi and fy=60ksi and ACI Code limitations. (14)

Q. 7: Define concrete, what are its ingredients and state good quality of concrete. (14)

Q. 8: Write short notes on any two of the following. (7, 7)

i. General Requirements for design of foundations.

iii. Types of Cracks in RC Beams.