10+ Corrival Corporate Services Interview Questions and Answers

Admixtures are chemicals added to concrete to enhance its properties or performance.

• Admixtures can improve workability, durability, strength, and set time of concrete.

• Examples of admixtures include water reducers, accelerators, retarders, and air-entraining agents.

Cube casting frequency refers to the number of times concrete cubes are cast for testing purposes.

• Cube casting frequency is determined by the project requirements and specifications.

• It is important to cast an adequate number of cubes to ensure accurate testing results.

• Typically, cube casting frequency ranges from 0 to 5 cubic meters per set.

• For example, if the project requires testing of 10 cubic meters of concrete, two sets of cubes may be cast.

• The cubes are then cured and t...read more

Cube acceptance criteria refers to the set of standards or requirements that a cube must meet in order to be accepted or approved.

• Cube dimensions must meet specified tolerances

• Surface finish must meet specified standards

• Cube must pass specified strength or durability tests

• Cube must meet any other specified criteria for acceptance

Workability of concrete refers to its ease of mixing, placing, and compacting without segregation or bleeding.

• Workability is influenced by water content, aggregate size and shape, and admixtures.

• Concrete with high workability is easier to place and compact, while low workability may require more effort.

• Examples of tests to measure workability include slump test, flow table test, and Vebé test.

The code for UPV test is ASTM C597.

• ASTM C597 is the standard code for Ultrasonic Pulse Velocity (UPV) test.

• UPV test is commonly used in construction to assess the quality of concrete.

• The test involves sending ultrasonic pulses through the concrete and measuring the time taken for the pulses to travel through the material.

The slump cone test measures the consistency and workability of fresh concrete.

• The slump cone test is a standard test used in the construction industry.

• It measures the consistency and workability of fresh concrete.

• A slump cone is a mold in the shape of a truncated cone.

• The test involves filling the cone with fresh concrete, compacting it, and then removing the cone to measure the slump or settlement of the concrete.

• The slump value indicates the flow and cohesiveness of the co...read more

Different types of pile include friction piles, end-bearing piles, and composite piles.

• Friction piles rely on skin friction along the length of the pile for support.

• End-bearing piles transfer the load to a strong layer of soil or rock at the bottom.

• Composite piles combine different materials like concrete and steel for added strength.

• Other types include sheet piles, helical piles, and screw piles.

M30 stands for a metric thread size commonly used in engineering and manufacturing.

• M30 refers to a metric thread size with a diameter of 30mm

• It is commonly used in engineering and manufacturing for fastening components

• Examples of M30 fasteners include bolts, screws, and nuts

A motor is an electrical device that converts electrical energy into mechanical energy, while a starter is a device that starts the motor.

• A motor consists of a rotor and a stator, which work together to produce rotational motion.

• Motors are used in a wide range of applications, from powering industrial machinery to driving electric vehicles.

• A starter is typically used to provide the initial burst of power needed to get a motor running.

• Starters can take many forms, including ma...read more

IS codes for billing & concrete in construction industry

• IS 456:2000 - Code of practice for plain and reinforced concrete

• IS 3370:1965 - Code of practice for concrete construction

• IS 1786:2008 - High strength deformed steel bars and wires for concrete reinforcement

• IS 4985:2000 - PVC pipes for potable water supplies

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.

• Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.

• They consist of two coils of wire, known as the primary and secondary windings, wrapped around a magnetic core.

• When an AC voltage is applied to the primary winding, it creates a magnetic field that induces a voltage in the secondary winding.

• Tran...read more

Procedures for billing involve preparing invoices, verifying accuracy, sending to clients, and following up on payments.

• Prepare detailed invoices based on project scope and work completed

• Verify accuracy of billing information, including rates, quantities, and discounts

• Send invoices to clients through email or mail

• Follow up on payments and resolve any billing discrepancies

• Maintain records of all billing transactions for future reference