A Bill of Quantities is a detailed description of the items that make up the component parts of a building .
The primary function of a bill of quantities is to assist the builder in the preparation of the tender price. Quantities are also prepared for a number of other reasons including:
Provide a frame of reference/check document of drawings and specification.
Establish cost of
Total building value
Trade costs
Individual building items/components
Materials ordering
Scheduling of construction work
Preparation of progress payments
Cost control
Preparation of cash flow
What knowledge is required?
An understanding of construction technology i.e. construction details and methodology.
An understanding of materials science.
An understanding of construction costs.
An understanding of construction sequencing.
How to quantify
Where do you start quantifying/what is your system? You need a frame of reference that provides guidance or `road map’ that will allow you to be consistent in your procedure. The correct frame of reference for quantifying is via trade groups egg
Excavation
Concrete
Brickwork
Steel
Carpentry
Roofing
Doors
Windows
Finishes
Plumbing
Electrical
Landscaping
Standards
Standard rules are used for preparing quantities. These rules are referred to as Standard Methods of Measurement. . At this stage there are no single International Standard. Individual countries Professional Quantity Surveying Association will produce their own standard.
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