Hindustan Construction Company Civil Engineer Interview Questions and Answers for Experienced

Minimum grade of concrete for construction purposes.

• Minimum grade of concrete used is M10.

• Higher grades of concrete are used for stronger structures.

• Grade of concrete depends on the type of construction and load-bearing capacity required.

The grade of concrete refers to its strength and is classified based on its compressive strength.

• Concrete grades range from M5 to M100, with M representing mix and the number representing the compressive strength in megapascals (MPa).

• The most commonly used grades of concrete are M20, M25, and M30.

• Higher grade concrete is used for structures that require greater strength, such as bridges and high-rise buildings.

• The grad...read more

There are various types of structures, including buildings, bridges, dams, tunnels, and towers.

• Structures can be classified based on their purpose, design, and materials used.

• Buildings can be further classified into residential, commercial, and industrial structures.

• Bridges can be classified into beam, arch, suspension, and cable-stayed bridges.

• Dams can be classified into gravity, arch, buttress, and embankment dams.

• Tu...read more

Density is the measure of mass per unit volume of a substance.

• It is a physical property of matter.

• It is calculated by dividing the mass of a substance by its volume.

• Units of density include kg/m³, g/cm³, and lb/ft³.

• Density can be used to identify substances and determine their purity.

• For example, gold has a density of 19.3 g/cm³, while aluminum has a density of 2.7 g/cm³.

There are two types of density construction: compacted and loose.

• Compacted density construction involves compressing the material to increase its density, such as in road construction.

• Loose density construction involves leaving the material in its natural state, such as in landscaping.

• The type of density construction used depends on the intended use of the material and the desired level of compaction.

• Other factors that...read more

Tests for construction joints include visual inspection, water tightness test, and load transfer test.

• Visual inspection to check for proper joint alignment and sealant application

• Water tightness test to ensure no water leakage through the joint

• Load transfer test to verify the joint can handle the intended load

• Other tests may include pull-out test, shear test, and compression test

• Testing frequency and methods may vary d...read more