CMT : RSB AND CHB

What is the purpose of steel reinforcing in concrete structures?

• To increase weight

• To control cracking and maintain structural integrity

• To improve flexibility

• To reduce strength

A steel product of plain round or deformed cross-section used for concrete reinforcement is called ________.

• Reinforcement

• Bar

• Concrete Reinforcement

• CHB

What is the Yield Strength of Grade 420 (60) steel bars?

• 90,000 psi

• 75,000 psi

• 60,000 psi

• 40,000 psi

What test is used to determine the tensile properties of steel bars?

• Phosphorous Content Test

• Tension Test

• Bend Test

• Compression Test

What is the purpose of the Bend Test for steel bars?

• To test compression strength

• To determine tensile strength

• To evaluate ductile properties

• To measure elongation

What is the maximum allowable variation in mass for steel bars?

• 3%

• 6%

• 9%

• 12%

What is the purpose of Phosphorous Content test for steel bars?

• To measure weight

• To test compression strength

• To evaluate ductile properties

• To determine tensile strength

Steel Bars shall be graded   according to its minimum ___________.

• Tensile Strength

• Compressive Strength

• Yield Strength

• Flexural Strength

Apparatus and Equipment needed for Reinforcing Steel Bars except:

• UTM

• CALIPER

• STEEL TAPE

• GRADUATED CYLINDER

What is the classification of Concrete Hollow Blocks based on load-bearing capacity?

• Type I and Type II

• Heavy Duty and Light Duty

• Grade A and Grade B

• Load Bearing and Non-load Bearing