 A. Septic conditions
 B. Dissolved oxygen
 C. Chlorine
 D. Nitrogen
RCC Structures Design

Corrosion in concrete sewers is caused by_____.

Distribution of shear intensity over a rectangular section of a beam, follows:
 A. A circular curve
 B. A straight line
 C. A parabolic curve
 D. An elliptical curve

In a combined footing if shear stress exceeds 5 kg/cm², the nominal stirrups provided are_____.
 A. 6 legged
 B. 8 legged
 C. 10 legged
 D. 12 legged

The zone in which transverse bending is likely to occur may be obtained by drawing a line from the faces of the column making an angle θ° with horizontal where θ° is_____.
 A. 30°
 B. 45°
 C. 60°
 D. None of these

The diameter of transverse reinforcement of columns should be equal to onefourth of the diameter of the main steel rods but not less than_____.
 A. 4 mm
 B. 5 mm
 C. 6 mm
 D. 7 mm

A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds_____.
 A. 10
 B. 15
 C. 20
 D. 25

If the shear stress in a R.C.C. beam is_____.
 A. Equal or less than 5 kg/cm², no shear reinforcement is provided
 B. Greater than 4 kg/cm², but less than 20 kg/cm², shear reinforcement is provided
 C. Greater than 20 kg/cm², the size of the section is changed
 D. All the above

Piles are usually driven by_____.
 A. Diesel operated hammer
 B. Drop hammer
 C. Single acting steam hammer
 D. All the above

The width of the flange of a Lbeam, should be less than_____.
 A. Onesixth of the effective span
 B. Breadth of the rib + four times thickness of the slab
 C. Breadth of the rib + half clear distance between ribs
 D. Least of the above

The floor slab of a building is supported on reinforced cement floor beams. The ratio of the end and intermediate spans is kept_____.
 A. 0.7
 B. 0.8
 C. 0.9
 D. 0.6