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Download the entire Volume 3 Criteria Manual - Urban Drainage ... Download the entire Volume 3 Criteria Manual - Urban Drainage ...
T-10.1 Permeable Interlocking Concrete Pavement Use the herring bone pattern shown in Photo PICP-1 and units with an overall length to thickness (aspect) ratio of three or less for vehicular applications. When ADA accessibility is needed, select units with a maximum opening of 0.5 inches. Designing for Maintenance Recommended ongoing maintenance practices for all BMPs are provided in Chapter 6 of this manual. During design, the following should be considered to ensure ease of maintenance over the long-term. These items are in addition to the items provided on BMP Fact Sheet T-10: • The outer edge of any vehicular PICP area should be bordered by concrete. This can be a concrete ribbon or curb and gutter. Additionally, provide a line of uncut blocks adjacent to the concrete border. This will ensure that cut edges are not placed directly against the concrete border, which could cause damage to the paver at the interface with the concrete. This is often accomplished by specifying a sailor course (see photo PICP-1) or soldier course (see photo PICP-2) adjacent to the concrete edge. Benefits • Provides traffic calming benefits. • Can be placed back if utility cuts or other patches are required. • Maintains infiltration rates well. • Provides flexibility in design options such as color and patterns. • Can be ADA compliant. Limitations • Capital costs are generally more expensive than some other permeable pavement systems. • Specify that all cut pavers used must be at least 40% of its full, uncut size when subject to vehicular use. This criterion can be easily met, although it occasionally requires a slight modification to the paver pattern in construction. See photo PICP-2. • Use units with an overall length to thickness (aspect) ratio of three or less for vehicular applications. Units with aspect ratios between three and four may be used in pedestrian areas or in areas with limited automobile use (e.g., residential driveways) (ICPI Tech Spec No. 10). • Specify a herringbone pattern for areas intended for vehicular traffic. This provides greater structural support. Photograph PICP-2. The very small cut paver shown in this photo could have been eliminated by rotating the paver above it 90 degrees PICP-2 Urban Drainage and Flood Control District November 2010 Urban Storm Drainage Criteria Manual Volume 3
Permeable Interlocking Concrete Pavement T-10.1 Paver Placement Where cutting pavers can be avoided, there is often a savings of time and cost. Additionally, the integrity of the paver is preserved. Photos PICP-3, 4, and 5 show good examples for incorporating markings into the pavement with and without cutting paver blocks. Photograph PICP-3. Parking spaces can be clearly delineated without cutting the pavers. Photo courtesy of Bill Wenk. Photograph PICP-4. The pattern used allows both parking spaces and the crosswalk to be delineated with minimal cutting of pavers. Photo courtesy SEH and the City of Ft. Morgan. November 2010 Urban Drainage and Flood Control District PICP-3 Urban Storm Drainage Criteria Manual Volume 3
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Permeable Interlocking Concrete Pavement<br />
T-10.1<br />
Paver Placement<br />
Where cutting pavers can be avoided, <strong>the</strong>re is often a savings of time and cost. Additionally, <strong>the</strong> integrity<br />
of <strong>the</strong> paver is preserved. Photos PICP-3, 4, and 5 show good examples for incorporating markings into<br />
<strong>the</strong> pavement with and without cutting paver blocks.<br />
Photograph PICP-3. Parking spaces can<br />
be clearly delineated without cutting <strong>the</strong><br />
pavers. Photo courtesy of Bill Wenk.<br />
Photograph PICP-4. The pattern used<br />
allows both parking spaces and <strong>the</strong><br />
crosswalk to be delineated with minimal<br />
cutting of pavers. Photo courtesy SEH and<br />
<strong>the</strong> City of Ft. Morgan.<br />
November 2010 <strong>Urban</strong> <strong>Drainage</strong> and Flood Control District PICP-3<br />
<strong>Urban</strong> Storm <strong>Drainage</strong> <strong>Criteria</strong> <strong>Manual</strong> <strong>Volume</strong> 3
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