Specifications in Egypt are part of the contractual documents. The National Research Center (HBRC) is responsible for the development of specifications and building codes. HBRC has published more than 15 books dealing with construction activities such as earthworks, plaster, etc. Uk types of project specifications can be divided into two main categories, which are mandatory and efficient. Prescriptive specifications define requirements using generic or proprietary descriptions of what is needed, while performance specifications focus on the results and not on the characteristics of the components. Specifications and other standards can be imposed externally, as described above, but also internal manufacturing and quality specifications. These exist not only for food or pharmaceutical products, but also for processing machines, quality processes, packaging, logistics (cold chain), etc., illustrated by ISO 14134 and ISO 15609.   In the development of hardware, software, or enterprise systems, an architectural specification is the set of documentation that describes the structure, behavior, and other views of that system. A specification often refers to a series of documented requirements that must be met by a material, design, product or service. A specification is often a kind of technical standard. Each section is divided into three distinct parts: „General“, „Products“ and „Execution“. The MasterFormat and Section system can be successfully used in residential, commercial, civil and industrial construction.  A requirement specification is a documented requirement or series of documented requirements that must be met by a material, design, product, service, etc.  In many areas, this is a more common part of product design and development processes. . . .