This specification covers the requirements for concrete grid paving units proposed for use in vehicular trafficways, parking areas, soil stabilization, and revetments. Materials shall possess adequate durability for the intended use.

1.1 This specification covers the requirements for concrete grid paving units for vehicular trafficways, parking areas, soil stabilization, and revetments. Maximum dimensions are 24 long by 24 in. wide (610 by 610 mm), with a minimum nominal thickness of 31/8 in. (80 mm). Note 1 - When particular features are desired, such as weight classification, higher compressive strength, surface texture, finish, color, or other special features, such properties should be specified separately by the purchaser. However, local sellers should be consulted as to availability of units having the desired features.

1.2 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.