Institute for Development & Communication Interview Questions and Answers

Different types of concrete used in construction include ready-mix concrete, precast concrete, high-strength concrete, and lightweight concrete.

• Ready-mix concrete is a mixture of cement, water, and aggregates that is delivered in a truck and poured on site.

• Precast concrete is made in a controlled environment and then transported to the construction site for installation.

• High-strength concrete is designed to withstand heavy loads and is often used in structures like bridges an...read more

Different types of steel used in construction include carbon steel, alloy steel, stainless steel, and tool steel.

• Carbon steel is the most common type used in construction due to its strength and affordability.

• Alloy steel contains additional elements such as manganese, silicon, and copper to enhance its properties.

• Stainless steel is corrosion-resistant and often used in environments where rust is a concern.

• Tool steel is used for making tools and equipment due to its hardness a...read more

Types of clutches include friction clutch, electromagnetic clutch, hydraulic clutch, and centrifugal clutch.

• Friction clutch: most common type, uses friction to engage and disengage

• Electromagnetic clutch: uses electromagnetic force to engage and disengage

• Hydraulic clutch: uses hydraulic pressure to engage and disengage

• Centrifugal clutch: engages at a certain RPM based on centrifugal force

Types of soils used in construction include clay, sand, silt, and gravel.

• Clay: used for lining ponds and as a base for roads

• Sand: used for making concrete and mortar

• Silt: used for filling embankments and as a base for roads

• Gravel: used for drainage and as a base for roads

Types of foundations in construction include shallow foundations, deep foundations, and specialized foundations.

• Shallow foundations: spread footings, mat foundations

• Deep foundations: piles, drilled shafts

• Specialized foundations: caissons, piers

Steel bars are commonly used in construction for reinforcement purposes.

• Steel bars are categorized based on their composition and properties, such as carbon steel, alloy steel, and stainless steel.

• Different types of steel bars include TMT bars, deformed bars, mild steel bars, and high tensile strength bars.