6-Balanced failure of singly reinforced concrete beams occurs when: (a) Value of stresses reaches the yield strength. (b) Value of concrete strain reaches 0.003. (c) Both of above. (d) Concrete stresses below neutral axis reaches the tensile strength.
6-Balanced failure of singly reinforced concrete beams occurs when: (a) Value of stresses reaches the yield strength. (b) Value of concrete strain reaches 0.003. (c) Both of above. (d) Concrete stresses below neutral axis reaches the tensile strength.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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6-Balanced failure of singly reinforced concrete beams occurs when:
(a) Value of stresses reaches the yield strength.
(b) Value of concrete strain reaches 0.003.
(c) Both of above.
(d) Concrete stresses below neutral axis reaches the tensile strength.
7-According to ACI-318, the minimum reinforcement ratio of slabs is dependent on: (a) Concrete compression strength.
(b) Concrete tensile strength.
(c) Yield strength of reinforcement.
(d) Effective depth of a slab.
8-According to ACI-318, to control deflection, the total depth of a 2 m span cantilever one- way slab should be not less than:
(a) 100 mm.
(b) 200 mm.
(c) 300 mm.
(d) 400 mm.
9-The minimum spacing between longitudinal steel bars in reinforced concrete beams is:
(a) 45 mm.
(b) 65 mm.
(c) 25 mm.
(d) 35 mm.
10-The modulus of rupture represents:
(a) Shear strength of concrete.
(b) Compression strength of concrete.
(c) Tensile strength of concrete.
(d) Yield strength of steel reinforcements.
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