Basic Important Knowledge for Civil Engineering Freshers

Basic Important Knowledge for Civil Engineering Freshers

Q1. What is the minimum Crushing strength of a first-class brick?

Answer: The minimum Crushing strength of a first-class brick is 10.5 N/mm²

Q2. Name the main constituent of cement which is responsible for the initial setting of cement?

Answer: The main constituent of cement which is responsible for the initial setting of cement is Tricalcium Aluminate.

Q3. Name the most commonly used retarder in concrete?

Answer: The most commonly used retarder in concrete is Gypsum.

Q4. What is the percentage of moisture content in a well-seasoned timber?

Answer: The percentage of moisture content in a well-seasoned timber is 10 to 12 percent.

Q5. What is the standard proportion of lime and sand in the mortar normally used in brick construction?

Answer: The standard proportion of lime and sand in the mortar normally used in brick construction is 1:2.

Q6. What is the proportion of cement and sand for the plaster of the septic tank?

Answer: The proportion of cement and sand for the plaster of septic tank is 1:3 (1 part cement and 3 part sand).

Q7. What is the allowable freeboard in a septic tank?

Answer: The allowable freeboard in a septic tank is 300 m to 450 mm.

Q8. Among Deodar, Chir, Shishum, and Pine, Which of the flowing trees yields hardwood?

Answer: Shishum yields hardwood.

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