Nina Percept Interview Questions and Answers

Waterproofing is the process of making a structure or material resistant to the penetration of water.

• It involves the application of various techniques and materials to prevent water from entering or damaging a structure.

• Common waterproofing methods include the use of waterproof membranes, sealants, and coatings.

• Waterproofing is essential in construction to protect buildings, basements, roofs, and other structures from ...read more

There are various waterproofing chemicals available for civil site engineering.

• Polyurethane-based waterproofing chemicals

• Acrylic-based waterproofing chemicals

• Bitumen-based waterproofing chemicals

• Cementitious waterproofing chemicals

• Silicone-based waterproofing chemicals

• Epoxy-based waterproofing chemicals

The soundness of cement refers to its ability to retain its volume after setting.

• Soundness is an important property of cement that ensures its durability and long-term stability.

• It is measured by conducting the Le Chatelier test or the autoclave test.

• A sound cement will not undergo significant expansion or contraction after setting.

• Unsound cement may lead to cracks, reduced strength, and structural instability.

• For exam...read more

The process of covering concrete placed on the exposed top of an external wall involves several steps.

• Clean the surface of the concrete to remove any dirt, dust, or debris.

• Apply a primer or bonding agent to enhance the adhesion of the covering material.

• Choose a suitable covering material such as paint, plaster, tiles, or cladding.

• Prepare the covering material according to the manufacturer's instructions.

• Apply the cover...read more

Bearing capacity of soil refers to its ability to support the load of a structure without excessive settlement or failure.

• Bearing capacity is a crucial factor in determining the type and size of foundations for structures.

• It depends on various factors such as soil type, moisture content, compaction, and depth.

• Different types of soil have different bearing capacities. For example, clay has a lower bearing capacity compa...read more

Grouting is a process of injecting a fluid material into the ground or structures to fill voids, strengthen soil, or provide support.

• Grouting is commonly used in construction and civil engineering projects.

• It is used to improve the stability and strength of soil or rock formations.

• Grouting can be done using various materials such as cement, epoxy, or chemical grouts.

• It is used to fill gaps or voids in structures like t...read more

The volume of concrete can be measured using various methods such as the displacement method, the geometric method, or the unit weight method.

• Displacement method: In this method, the volume of concrete is determined by measuring the change in water level when the concrete is submerged in a container.

• Geometric method: This method involves measuring the dimensions of the concrete element (length, width, and height) and c...read more