Revised 2020
Note: This guide specification for U.S. applications is for concrete grid units placed on a sand bedding course over a compacted, dense-graded aggregate base. The text allows an option of topsoil and grass in the grid openings or ASTM No. 8 stone. This specification is for limited vehicular applications such as access roads and emergency fire lanes, as well as intermittently used overflow parking areas.
This Section includes the term “Architect.” Edit this term as necessary to identify the design professional in the General Conditions of the Contract. The text must be edited by a qualified, licensed design professional to suit specific project requirements. CMHA makes no representations or warranties of any kind, expressed or implied, and disclaims any liability for damages resulting in the use of this guide construction specification.
If the area is exposed to recurring vehicular traffic and additional stormwater storage in the base is desired, consider using permeable interlocking concrete pavements as they provide additional structural support to vehicles while providing runoff storage in an open-graded, crushed stone base. In such cases, the specifier should refer to the CMHA manual, Permeable Interlocking Concrete Pavements.
Note: This guide specification for Canadian applications is for concrete grid units placed on a sand bedding course over a compacted, dense-graded aggregate base. The text allows an option of topsoil and grass in the grid openings or ASTM No. 8 stone. This specification is for limited vehicular applications such as access roads and emergency fire lanes, as well as intermittently used overflow parking areas.
This Section includes the term “Architect.” Edit this term as necessary to identify the design professional in the General Conditions of the Contract. The text must be edited by a qualified, licensed design professional to suit specific project requirements. CMHA makes no representations or warranties of any kind, expressed or implied, and disclaims any liability for damages resulting in the use of this guide construction specification.
If the area is exposed to recurring vehicular traffic and additional stormwater storage in the base is desired, consider using permeable interlocking concrete pavements as they provide additional structural support to vehicles while providing runoff storage in an open-graded, crushed stone base. In such cases, the specifier should refer to the CMHA manual, Permeable Interlocking Concrete Pavements.