08/05/2023
Quantity surveyors are professionals who specialize in measuring and estimating construction costs. They use various techniques to measure quantities from drawings, including:
1- Take-off: Quantity surveyors use the take-off method to measure quantities from drawings by taking off the dimensions of the various elements in the drawing. This involves identifying the different parts of the drawing and recording their dimensions, such as the length, width, and height. They then calculate the quantities of each element based on the dimensions and specifications provided.
2- Counting: Quantity surveyors also count the number of items or components in the drawing to measure quantities. For example, if the drawing shows a building plan, the quantity surveyor may count the number of doors, windows, and light fixtures to determine the quantity of each item required.
3- Area calculation: Quantity surveyors also use area calculations to measure quantities from drawings. They calculate the area of different sections in the drawing, such as the floor area, wall area, or roof area, to estimate the quantities of materials required.
4- Volumetric calculation: Quantity surveyors use volumetric calculations to measure quantities for projects that involve excavation or filling. They calculate the volume of the material to be excavated or filled based on the dimensions provided in the drawing.
Overall, quantity surveyors use a combination of these techniques to measure quantities from drawings accurately. They also consider other factors such as material wastage, labor, and equipment costs to provide estimates that reflect the actual cost of the project.
