Unit08-Final(Knowledge)-1

What is the main cause of concrete cracks in buildings?

• Poor paint quality

• Heavy loads

• Shrinkage during curing

• Earthquakes

Why is it important to classify the severity of a crack?

• To avoid repainting

• To determine the right repair method

• To decide on wall color

• To know what paint to use

In a simply supported concrete beam, where is the maximum stress usually located?

• On the top surface

• At the midpoint

• At both ends

• Near the support

What type of crack typically appears around windows and doors?

• Crack around openings

• Hairline crack

• Corrosion crack

• Horizontal crack

What is the purpose of caulking in construction?

• Reduce heat transfer

• Prevent water leakage

• Decorate concrete walls

• Strengthen steel beams

What type of load is due to the weight of the building itself?

• Gravity load

• Live load

• Lateral load

• Environmental load

Which of the following is an environmental load?

• Internal force

• Beam deflection

• Snow load

• Furniture weight

How is crack severity monitored professionally?

• Using crack monitors

• Through noise measurements

• By visual inspection only

• With temperature sensors

What material is injected into cracks to restore strength?

• Sand and water

• Epoxy

• Silicone

• Cement paste

What must be done before injecting epoxy into cracks?

• Cover the area

• Paint the surface

• Fill with water

• Clean and dry the crack