Gina Engineering Company Quantity Surveyor Interview Questions and Answers

Rolling margin is the difference between the cost of goods sold and the selling price, calculated on a rolling basis.

• Rolling margin helps in analyzing the profitability of a product over time.

• It is calculated by subtracting the cost of goods sold from the selling price and dividing by the selling price.

• For example, if the cost of goods sold is $50 and the selling price is $100, the rolling margin would be 50%.

Rate analysis involves calculating the cost of different items in a construction project, such as masonry works.

• Rate analysis helps in determining the cost of materials, labor, and equipment for each item in a project.

• It involves breaking down the total cost into components like material cost, labor cost, equipment cost, and overheads.

• For masonry works, the rate analysis would include calculating the cost of bricks, ce...read more