Confident Group Billing Engineer Interview Questions, Process, and Tips

Plastering area calculation involves measuring the surface area to be covered with plaster.

• Measure the length and height of the surface to be plastered

• Multiply the length and height to get the surface area

• Subtract the area of any openings such as doors and windows

• Add 10% extra for wastage

• The formula for plastering area calculation is: (Length x Height) - (Area of Openings) + 10% Wastage

Block work quantity estimation involves calculating the amount of blocks required for a construction project.

• Determine the dimensions of the wall to be constructed

• Calculate the area of the wall

• Determine the size of the blocks to be used

• Calculate the number of blocks required by dividing the area of the wall by the area of each block

• Add 10% extra blocks for wastage and breakages

The number of blocks in one m3 depends on the size of the blocks.

• The size of the blocks can vary depending on the material used.

• For example, if the blocks are 20cm x 20cm x 20cm, then there would be 125 blocks in one m3.

• However, if the blocks are 10cm x 10cm x 10cm, then there would be 1000 blocks in one m3.

BBS or Bar Bending Schedule is prepared by calculating the weight of steel required for a particular structure.

• Understand the structural drawings and identify the different components

• Calculate the total length of each component and the number of bars required

• Calculate the weight of steel required for each component

• Prepare a detailed list of all the components and their corresponding weight of steel

• Use software like Aut...read more

Plastering deductions as per IS code refer to the deductions made in plastering thickness as per Indian Standards code.

• IS code specifies deductions for plastering thickness based on the type of surface and the type of plaster used.

• For example, for a smooth surface and cement plaster, the deduction is 6mm for internal walls and 8mm for external walls.

• Similarly, for a rough surface and lime plaster, the deduction is 12mm...read more