Sandhu Group Interview Questions and Answers

The size of the concrete cube is typically 150x150x150 mm, the size of the slump cone is 100 mm, and the percentage of strength obtained varies for different curing periods.

• Concrete cube size: 150x150x150 mm

• Slump cone size: 100 mm

• Percentage of strength obtained varies for 3, 7, 14, and 28 days

• Example: Strength obtained at 28 days is typically around 90-95% of the design strength

Tests are conducted on concrete, soil, and other materials to ensure quality and durability.

• Various tests are conducted on concrete to check compressive strength, workability, and durability.

• Soil tests are done to determine its composition, moisture content, and bearing capacity.

• Different materials like steel, asphalt, and aggregates are tested for their properties and quality.

• Non-destructive testing methods like ultrasonic testing and radiography are also used to assess mate...read more

Construction process involves planning, designing, procurement, construction, and completion of a project.

• Planning phase involves defining project scope, setting goals, and creating a timeline.

• Design phase includes creating blueprints, obtaining permits, and selecting materials.

• Procurement phase involves purchasing materials, hiring contractors, and scheduling deliveries.

• Construction phase includes site preparation, foundation work, framing, and finishing.

• Completion phase inv...read more

The number of sample cubes for concrete for 100m^3 depends on the specifications and requirements of the project.

• Number of sample cubes typically ranges from 3 to 6 for 100m^3 of concrete.

• The number of sample cubes may also depend on the strength grade of the concrete being tested.

• It is important to follow relevant standards and guidelines for sampling and testing concrete.

• Consulting with a structural engineer or testing laboratory can help determine the appropriate number of...read more

Plastering is a construction procedure used to cover walls and ceilings with a smooth finish.

• Prepare the surface by cleaning and dampening it

• Apply a base coat of plaster using a trowel

• Allow the base coat to dry before applying a finish coat

• Smooth and level the finish coat with a float or trowel

• Finish by sanding and painting if necessary

Block work procedure involves laying bricks or blocks in a specific pattern to create walls or structures.

• Prepare the surface by cleaning and leveling it

• Mix mortar according to specifications

• Lay the first course of blocks ensuring they are level and plumb

• Continue laying subsequent courses, staggering joints for strength

• Use a spirit level and string lines for accuracy

• Fill joints with mortar and strike off excess

• Allow mortar to cure before continuing

• Inspect work for quality and...read more

Waterproofing procedure involves applying materials to prevent water from penetrating a structure.

• Inspect the area to identify any existing leaks or damage

• Prepare the surface by cleaning and repairing any cracks or holes

• Apply waterproofing materials such as membranes, coatings, or sealants

• Ensure proper curing and drying time before exposing to water

• Test the waterproofing by conducting a water test to check for leaks

False ceiling procedure involves installation of a secondary ceiling below the main ceiling to improve aesthetics, acoustics, and insulation.

• Measure the area of the room to determine the amount of materials needed

• Prepare the ceiling by cleaning and ensuring it is structurally sound

• Install the framework for the false ceiling using metal channels or wooden battens

• Attach the ceiling tiles or panels to the framework

• Finish the edges with trim or molding for a polished look

• Test the...read more