1 the fine, soft, shiny fiber produced by silkworms to form their cocoons. 2  thread or fabric made from this fiber. 3  a garment or other article made of this fabric. 4  a distinctive silk uniform, as of a jockey.  the silk gown worn by a King's (or Queen's) Counsel in British law courts.
A prescriptive specification is one that includes clauses for means and methods of construction and composition of the concrete mix rather than defining performance requirements.he general concept of how a performance-based specification for concrete would work is as follows: There would be a qualification/certification system that establishes the requirements for a quality control management system, qualification of personnel and requirements for concrete production facilities.
Prescriptive vs. Performance Building Energy Codes. Most building energy codes today offer two paths for compliance: Prescriptive or Performance. In this post, weâll discuss the two different paths and why many projects follow the Prescriptive path even though the Performance path is probably more cost-effective.rovided the mandatory requirements are met, the rest of the code can be met in one of two ways. The project team can follow prescriptive requirements, building each component to a certain level of performance (some of the 2012 IECC prescriptive requirements are shown below).