Chapter hvac engineering Fundamentals: Part 1 Introduction

13.4.4
Types of specifications
There are two kinds of specifications: the
performance
specification,
which is based on performance criteria only, and the
or-equal
specifi-
cation, which has a vendor-specific identification of what is wanted. A
performance specification describes quality, materials, accuracy, and
performance in specific terms, but without reference to a specific man-
Design Documentation: Drawings and Specifications
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