What is the formula for calculating bond stress (τbd) in reinforced concrete?

Τbd = V / (d × ∑p)

True or False: The permissible bond stress for a deformed bar in tension is the same as that for a plain bar.

False. The permissible bond stress for a deformed bar in tension should be increased by 60%.

Fill in the blank: The development length (Ld) is necessary to develop full resisting force in ______.

Flexural tension

What is the nominal shear stress (τv) formula for a reinforced concrete beam?

Τv = V / (b × d)

Riddle: I am the necessary length for a bar to resist pull-out forces, often calculated with a diameter in mind. What am I?

Development length (Ld)

Which of the following increases the permissible bond stress for a plain bar in tension? A) 25% increase B) 60% increase C) No increase D) 10% increase

B) 60% increase

What is the maximum spacing for shear reinforcement according to IS 456: 2000?

300 mm or 0.75d, whichever is less

True or False: The design shear strength of concrete (τc) depends only on the grade of concrete.

False. It depends on both the grade of concrete and the percentage of steel.

Fill in the blank: The formula for the area of steel (Ast) as a percentage of the total beam area is p = ______.

Ast / (b × d) × 100

In terms of shear design, what does ASV represent?

Area of shear reinforcement

Riddle: I am the tension that a concrete's bond strength must resist, measured in N/mm². What am I?

Bond stress (τbd)

Which parameter does the maximum shear strength (τc, max) of concrete depend on? A) Steel grade B) Concrete grade C) Load type D) Span length

B) Concrete grade

Fill in the blank: The critical section for shear in a reinforced concrete beam is typically taken at ______.

D from the face of the support

True or False: The spacing for vertical stirrups in a beam can be greater than the maximum spacing specified in IS 456: 2000.

False. The spacing must adhere to the specified maximum limits.

What is the definition of bond stress in the context of reinforced concrete?

Bond stress is the longitudinal shearing stress acting on the surface between the steel and concrete.

Riddle: I am the force that must be resisted by bond stress along the length of a steel bar embedded in concrete. What am I?

Tensile force (T)

What does the term 'development length' in concrete structures refer to?

The length required for a reinforcement bar to develop its full resisting force.