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.
RE: Pre-Qualified Welding Procedure Specification. Sorry to disagree, Use of prequalified weld procedures is controlled by the individual contruction codes only which details the extra steps you may have to take to use them. ASME VIII discusses it in UW-28 (d), section I in PW-1.2, NBIC in RC-1092, etc....