SLIDE 7 2/17/2015 7 MOBILITY & SURFACING MATERIALS Alternative Surfaces in the Rural Area
- Rural Roads Policies and Standards establish that
Alternative Hardscape Surfacing can be used in the rural area, but do not specify which alternative surfacing to use.
- Alternative Hardscape Surfaces includes materials
with specialized properties such as increased porosity, specialized binders, and or colored aggregates Opportunity to let your preference be known!
Surfacing Objectives
- Safe
- Durable
- Stable
- Easy to maintain
- Accessible and safe for people with disabilities
– Must comply with Americans with Disabilities Act (ADA) Standards
- Appropriate for intended modes (pedestrian,
bicycle, equestrian)
Traditional Materials
Surfacing Material Description Portland Cement Concrete Composed of coarse aggregate (crushed stone and gravel), fine aggregate such as sand, portland cement and water. Hot Mix Asphalt A combination of stone, sand, or gravel bound together by asphalt cement, a product of crude oil.
Surfacing Options
- Identified five alternative hardscape materials
for consideration
- Each surface has been rated according to:
– Construction & Maintenance Impacts – Permeability – ADA Compliant & Slip Resistant Surface – Context Sensitive – Construction Cost – Maintenance
Alternative Surfacing Materials
Surfacing Material Description Porous Concrete Porous concrete pavement has a 15-25% void structure, allowing 3-8 gallons of water per minute to pass through each square foot. Porous Asphalt Standard hot-mix asphalt with reduced sand or fines allows water to drain through it.