1. Identification of applicable requirements and performance

1.1 Notion of performance

Product performance is the required level of ability, specified or actual, of a product to fulfill a role. The performance of a structure appears as a set of measurable and objectively identifiable characteristics that help determine its ability to fulfill various functions. These include, first and foremost, the physical quantities that express the behavior of a building or its components, with respect to the agents that influence them.

Performance is often defined and expressed in terms of the building's response to stresses such as gravity, loads and overloads, noise, wind, heat flow, air humidity, chemical agents, fire, etc. But the use of measurable physical quantities (such as the noise level of a room) or calculable quantities...