The control of quality in the production of geosynthetic products is of critical importance to their reliability of performance in the field. Furthermore, the supply of statistical analysis information to the design engineer should be both meaningful in its statistical sense and understandable by the engineer. If the engineer does not comprehend the meaning of the supplied production quality statistics, then he will not be able to specify appropriate synthetic products properly. This paper
describes the quality proced which must be followed by manufacturers and their necessity in complying with the demands of a high-technology engineering science. The paper points out the additional but vitally important quality roles of both the design engineer and the contractor placing the textile. The Author emphasises that overall quality of product and performance is a joint product of design engineer, manufacturer and placement contractor.