Specifications
The ways a contract can say what it wants: method, end-result, performance, proprietary product and statistical acceptance specifications.
Reviewed by licensed engineers · How we review
Specifications
Specifications are used (1) to convey information concerning desired products from a buyer to a seller or potential seller, (2) as a basis for competitive bidding for the delivery of products, and (3) to measure compliance to contracts.
Statistical Acceptance Specifications
Most U.S. states use some form of statistical acceptance in highway construction, and specifically in pavements.
End-Result Specifications
An end-result specification is one in which the final characteristics of the product are stipulated, and the contractor is given considerable freedom in achieving those characteristics.
Method Specifications
A method specification outlines a specific materials selection and construction operation process to be followed in providing a product. In the past, many construction specifications were written in this manner.
Performance Specifications
Performance specifications are those in which the product payment is directly dependent upon its actual performance. Typical of these specifications are warranty, limited warranty and design-build-operate contracts.
Proprietary Product Specifications
A proprietary product specification is used when a generic description of a desired product or process cannot be easily formulated.