Computations of C and T

Q. In limit state design of concrete for flexure, the area of stress block is taken as

1. $0.530f_{ck}.X_u$
2. $0.446f_{ck}.X_u$
3. $0.420f_{ck}.X_u$
4. $0.360f_{ck}.X_u$

Q. In the reinforced beam section shown in the figure (not drawn to scale), the nominal cover provided at the bottom of the beam as per IS 456-2000, is



All dimensions are in mm

1. 36 mm
2. 50 mm
3. 30 mm
4. 42 mm

Q.

A piece of ribbon is $125cm$ long. Its length cannot be expressed as ________.

1. $1.25m$

2. $1250mm$

3. $12.5km$

4. $1m25cm$

Q.

American football is played on a $100\mathrm{yd}-$long field, excluding the end zones. How long is the field in meters? (Assume that $1\text{m}=3.281\text{ft}$)

Q. In the reinforced beam section shown in the figure (not drawn to scale), the nominal cover provided at the bottom of the beam as per IS 456-2000, is



All dimensions are in mm

1. 36 mm
2. 50 mm
3. 30 mm
4. 42 mm