ASTM C981-20 PDF Download

ASTM C981-20 is a standard guide that provides information and guidelines for the design of built-up bituminous membrane waterproofing systems for building decks. It specifically focuses on fully adhered systems used in plaza deck and promenade construction over occupied spaces of buildings, where they are covered by a separate wearing course.

The guide emphasizes the selection of components and offers recommendations for the design of the system. It acknowledges that, in some cases, specific criteria for certain conditions may not be established or may have multiple variables that need to be considered. In such instances, the designer can refer to the applicable portions of the guide, specifically Sections 5-16, which provide reference and guidance for making informed selections.

The standard also indicates that there are no comparable standards published by other organizations that address the same topic. This implies that ASTM C981-20 is a unique and authoritative source for designing built-up bituminous membrane waterproofing systems for building decks.