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Sustainable Streetscape Materials

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by

Alexander Scheffer

on 12 August 2014

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Transcript of Sustainable Streetscape Materials

SUSTAINABLE STREETSCAPE DESIGN & CONSTRUCTION MATERIALS
Rain Garden Section

Rock trench without pipe outfall connection
Including plants & native grasses
Runoff directed from roadway directly into rain garden




Bioswale Section

Rock trench with pipe outfall connection
Including plants & native grasses
Runoff directed from roadway directly into bioswale

Sustainable Street Construction Materials

Residential Bioswale & Rain Garden Layout

Deep-rooted plants are preferred for infiltration.
Subgrade drains and amended soils may be needed to facilitate infiltration.
Costs vary greatly depending on size, exfiltration system, and existing site conditions.

Considerations

Applications

Residential roadside swales

Parking lot islands and medians

Applications

Heavy Metals
Lead
Chromium
Cadmium
Copper
Aluminum
Zinc
Inorganic Chemicals
Phosphates
Nitrates
Oil and Grease
Organic Chemicals
Pesticides
Pathogens
Animal waste

Water Pollutants

Minimize the cost of storm sewer systems.
Increase in groundwater recharge
Reduction of total storm water runoff volume
Increased water quality through the treatment of pollutants


Benefits

Remove silt and pollution from stormwater runoff.
Absorb low flows or carry runoff from heavy rains to storm sewer inlets or directly to surface waters.
Designed to maximize the time water spends traveling through it, while allowing more contaminants to be trapped.



What do they do?

Shallow ditches filled with vegetation, compost and other natural water filters.

Bioswales & Rain Gardens

Permeable Articulating Concrete Block Pavers (PaveDrain)
Ideal for Parking (H-20 Loading Rating)

Projects Constructed Planned Projects
City Hall Parking Lot NE 2nd Street On Street Parking
Gore Betz Park (Parking)

Sustainable Street Construction Materials

Grasses
Sand Cordgrass
Fakahatchee Grass
Muhly Grass

Trees
Bald Cypress
Pond Apple
Silver Buttonwood
Dahoon Holly
Wax Myrtle
Sabal Palms

Native Grasses/Trees

Highway medians

Applications

FREEBOARD

A parabolic or trapezoidal shape is recommended with side slopes no steeper than 3:1.
A wide, flat swale bottom maximizes treatment area and pollutant removal.
Trench depth and freeboard depth determine water retention capacity.
Avoid soil compaction during installation.
Construct above water table

Bioswale and Rain Garden Design for
Fort Lauderdale Streets

Muhly Grass

Uptakes pollutants such as nitrogen, phosphorous and carbon
Produces oxygen
Provides foraging and communal habitat for wildlife
Aesthetically pleasing
Adapted to Florida rainfall patterns
Resists local pests and disease


Native Plants

Pervious Pavers
Ideal for Parking & Walkways

Projects In Construction Planned Projects
Lewis Landing Park Gore Betz Park (Walkways)
Townsend Park

Sustainable Street Construction Materials

ALEX SCHEFFER, P.E., LEED GREEN ASSOCIATE
URBAN DESIGN ENGINEER

Solar Pathway Lighting

Projects Constructed
Riverland Park
South Middle River – 14th Street

Planned Projects or Under Construction
Flagler Greenway Phase II
Progresso Neighborhood Improvement Project
NW 9th Avenue Improvement Project
FDOT NW Neighborhood Improvements Project
Full transcript