Shapoorji Pallonji Group Senior Civil Foreman Interview Questions and Answers

There are different grades of concrete used in construction based on strength and durability requirements.

• Concrete grades are classified based on their compressive strength, such as M20, M30, etc.

• The 'M' stands for mix design, followed by the compressive strength in N/mm^2.

• Higher grade concrete is used for structures requiring higher strength, such as bridges and high-rise buildings.

• Lower grade concrete is used for non...read more

Honeycomb is a structure made up of hexagonal cells, similar to those found in beehives.

• Honeycomb structures are commonly used in engineering for their strength and light weight.

• The hexagonal shape of honeycomb cells allows for efficient use of material.

• Examples of honeycomb structures include honeycomb core panels used in aerospace industry and honeycomb grids used in civil engineering for soil stabilization.

There are several types of gaskets used in piping, including spiral wound, ring joint, and sheet gaskets.

• Spiral wound gaskets are commonly used for high pressure and temperature applications.

• Ring joint gaskets are used in high pressure and high temperature applications, typically in oil and gas industries.

• Sheet gaskets are versatile and come in various materials such as rubber, cork, and graphite.

The nominal brick size is typically 90 mm x 90 mm x 90 mm.

• Nominal brick size is commonly 90 mm x 90 mm x 90 mm.

• It may vary slightly depending on the country or region.

• Brick sizes are standardized for construction purposes.

IS code for concrete cube casting is IS 516:1959

• IS 516:1959 is the code for methods of tests for strength of concrete

• It specifies the procedure for making and curing concrete test specimens

• The standard size of the cube for casting is 150mm x 150mm x 150mm

• The cubes are casted in three layers and each layer is compacted 25 times using a standard tamping rod