1-For T-shapes, the total effective compression flange width, is limited to one- quarter of the span length of the beam, and the effective overhanging portions of the compression flange on each side of the web are limited to: (a) Eight times the thickness of the flange (slab). (b) Four times the thickness of the flange (slab) (c) Two times the thickness of the flange (slab) (d) Six times the thickness of the flange (slab) 2-According to ACI 8.12.4, an isolated T beam must have a flange thickness not less than one-half the web width, and its effective flange width may not be larger than (a) Two times the web width. (b) Four times the web width. (c) Three times the web width. (d) Six times the web width. 3- The limit concerning, the safety or load-carrying capacity of structures and include buckling, fracture, fatigue, overturning, and so on is called (a) Serviceability limit state. (b) Bending limit state. (c) Strength limit state. (d) Shear limit state.
1-For T-shapes, the total effective compression flange width, is limited to one- quarter of the
span length of the beam, and the effective overhanging portions of the compression flange
on each side of the web are limited to:
(a) Eight times the thickness of the flange (slab).
(b) Four times the thickness of the flange (slab)
(c) Two times the thickness of the flange (slab)
(d) Six times the thickness of the flange (slab)
2-According to ACI 8.12.4, an isolated T beam must have a flange thickness not less than
one-half the web width, and its effective flange width may not be larger than
(a) Two times the web width.
(b) Four times the web width.
(c) Three times the web width.
(d) Six times the web width.
3- The limit concerning, the safety or load-carrying capacity of structures and include
buckling, fracture, fatigue, overturning, and so on is called
(a) Serviceability limit state.
(b) Bending limit state.
(c) Strength limit state.
(d) Shear limit state.
4-The method concerned with the estimated widths of flexural cracks and recommended
maximum spacing of flexural bars is called
(a) Control of cracking
(b) Control of deflection
(c) Control of load
(d) Control of moment.
5-A crack quite similar to shear cracks except that they spiral around the beam is called
(a) Shear cracks
(b) Torsion cracks
(c) Flexural cracks
2-4
(d) Web shear cracks
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 oneway 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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