ASTM C1396/C1396M-17 PDF Download

The ASTM C1396/C1396M-17 standard covers the specifications for different types of gypsum boards. These include gypsum wallboard, predecorated gypsum board, gypsum backing board, coreboard, and shaftliner board, water-resistant gypsum backing board, exterior gypsum soffit board, gypsum sheathing board, gypsum base for veneer plaster, gypsum lath, and gypsum ceiling board.

The gypsum boards described in the standard are used for various applications such as walls, ceilings, partitions, and as a base in multilayer systems or shaft wall assemblies. The boards have a noncombustible core made of gypsum and are surfaced with paper bonded to the core. They are designed to provide a suitable surface for decoration, tile applications, or as a base for plaster.

The standard specifies the required physical properties that the gypsum boards must comply with. These include core, end, and edge hardness, straightness of the edges and ends, length, tapered edge depth, flexural strength, humidified deflection, nail pull resistance, permeance, water resistance, and surface water absorption.

It should be noted that the standard also references other ASTM specifications such as C840, C841, C844, and C1280, which contain application procedures for gypsum board. Additionally, specific requirements for each type of gypsum board are listed in different sections of the standard, ranging from Section 5 to Section 12.