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<ul><li>Our design team of   ecologists, landscape architects and civil engineers   explored the  economic, ecological and...
3 Core Integrated Principles <ul><ul><li>Transferable Renewable Technology (TRT)   </li></ul></ul><ul><ul><li>Using export...
Low Impact Development <ul><li>Broad, vegetated median allowing  </li></ul><ul><li>bio-filtration services through the soi...
Context Sensitive Solutions <ul><li>Landscape design responds to the cultural and historical context of the site by incorp...
Transferable Renewable Technology <ul><li>Incorporates local and regional recycled and industrial by-product materials int...
Perspective Section Not To Scale Biofiltration Storm Water Treatment
Recycled Biofiltration Media <ul><li>Local and regional waste products given new life as filtration media </li></ul><ul><u...
Testing the Biofiltration Media <ul><li>Biofiltration media is recycled rather than a mined amendment such as sand. </li><...
Linear Detention / Water Quality Pond <ul><li>Median provides water quality treatment and flood detention </li></ul><ul><u...
Providing Water Quality & Detention <ul><li>Paving is graded to drain to median minimizing pipe required. </li></ul><ul><l...
Pre and Post Development Hydrograph
Landscape Plan <ul><li>10 Project Star Icons – the Battle of San Jacinto led to annexation and to the Mexican </li></ul><u...
Musical Interpretive Roadway <ul><li>The northbound lane is the route that Texas Republic forces traveled to the Battle of...
Implementing San Jacinto Masterplan <ul><li>Excavated material to fill in reflecting pond as called for in San Jacinto Mas...
Cost Evaluation <ul><ul><li>Reclaimed Roadway vs. Conventional Roadway </li></ul></ul><ul><ul><li>Capital Cost Savings of ...
Carbon Footprint <ul><li>Significant reductions in carbon emissions were attained by sourcing incoming materials locally a...
Ecosystem Services <ul><li>The Reclaimed Roadway design provides the following ecosystem services: </li></ul><ul><ul><li>C...
Sustainable Sites Initiative <ul><li>The Sustainable Sites Initiative is a newly released rating system for landscape sust...
Community Benefits of a Reclaimed Roadway <ul><li>Low Impact Development </li></ul><ul><li>Low impact materials as well as...
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Finalist 07185 - Green Roadway

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Finals Event presentation from team of TBG Partners, Pate Engineers and the Lady Bird Johnson Wildflower Center (Steve Windhager speaking).

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Finalist 07185 - Green Roadway

  1. 1. <ul><li>Our design team of ecologists, landscape architects and civil engineers explored the economic, ecological and social linkages in promoting sustainable development of Independence Parkway. </li></ul><ul><li>Our solution establishes an innovative design using recycled materials for a low impact development roadway corridor. </li></ul><ul><li>Design principles can be implemented for widespread application in Harris County and throughout Texas. </li></ul>Design Approach: Reclaimed Roadway
  2. 2. 3 Core Integrated Principles <ul><ul><li>Transferable Renewable Technology (TRT) </li></ul></ul><ul><ul><li>Using exportable technology, materials and approaches for roadway construction practices for widespread implementation. </li></ul></ul><ul><ul><li>Context Sensitive Solutions (CSS) </li></ul></ul><ul><ul><li>Design responds to physical setting and enhances or preserves aesthetic, historic and environmental resources while maintaining safety and mobility. </li></ul></ul>Low Impact Development (LID) Reduce volume and rate of storm water runoff through restoration of hydrologic function.
  3. 3. Low Impact Development <ul><li>Broad, vegetated median allowing </li></ul><ul><li>bio-filtration services through the soil. </li></ul><ul><ul><li>Improves water quality and increases detention capacity. </li></ul></ul><ul><ul><li>Increases soil porosity and infiltration rates through the use of recycled materials. </li></ul></ul><ul><ul><li>Minimizes the use of drainage pipe to convey storm water and reduces outfall depth requirements. </li></ul></ul><ul><ul><li>Reduces the capital costs of roadway construction by 12% compared to conventional roadway design. </li></ul></ul>
  4. 4. Context Sensitive Solutions <ul><li>Landscape design responds to the cultural and historical context of the site by incorporating interpretive design elements relating to the adjacent San Jacinto Battleground. </li></ul><ul><li>Responds to the natural environment by restoring the coastal prairie setting with large open fields scattered with tree clusters and broad swaths of individual native plant species. </li></ul>
  5. 5. Transferable Renewable Technology <ul><li>Incorporates local and regional recycled and industrial by-product materials into biofiltration “soil” mixture instead of importing mined materials with a high embodied energy demand. </li></ul><ul><li>Re-introduces native grasses to increase infiltration and evaporation of stormwater and improve maintenance efficiency. </li></ul><ul><li>Technology is applicable for roadways in the Houston area and beyond. </li></ul>Recycled Glass Bottom Ash Low-Nutrient Compost
  6. 6. Perspective Section Not To Scale Biofiltration Storm Water Treatment
  7. 7. Recycled Biofiltration Media <ul><li>Local and regional waste products given new life as filtration media </li></ul><ul><ul><li>Rice Hull Ash </li></ul></ul><ul><ul><li>Recycled Glass </li></ul></ul><ul><ul><li>Low-nutrient Compost </li></ul></ul><ul><ul><li>Coal Furnace Bottom Ash </li></ul></ul><ul><li>Initial tests: </li></ul><ul><ul><li>Infiltration rate 30 ft per day </li></ul></ul><ul><ul><li>42% void space </li></ul></ul><ul><ul><li>Rice Hull Ash’s high field capacity resists drought </li></ul></ul>American Hydrosoil Rice Hull Ash Recycled Glass Low-Nutrient Compost Bottom Ash
  8. 8. Testing the Biofiltration Media <ul><li>Biofiltration media is recycled rather than a mined amendment such as sand. </li></ul><ul><li>Vegetated media anticipated to have twice the lifespan of a sand filter as plant </li></ul><ul><li>roots maintain porosity. </li></ul><ul><li>Reduce maintenance over the life of the roadway compared to conventional measures. </li></ul><ul><li>The proposed design over-treats the run-off. Even if infiltration is reduced over time, the goals of the program are achieved. </li></ul>
  9. 9. Linear Detention / Water Quality Pond <ul><li>Median provides water quality treatment and flood detention </li></ul><ul><ul><li>Southern 70% of site runoff includes detention. </li></ul></ul><ul><ul><li>Northern 30% drains freely after water quality treatment. </li></ul></ul><ul><ul><li>Combined discharge rate is lower than predevelopment conditions. </li></ul></ul>MATCHLINE MATCHLINE Legend Detention and Treatment Treatment Only
  10. 10. Providing Water Quality & Detention <ul><li>Paving is graded to drain to median minimizing pipe required. </li></ul><ul><li>Channel conveys 3-year storm and provides detention for larger events </li></ul><ul><li>For 100-year storm events, median breaks act as wide broad-crested weirs about 1’ below elevation of the primary roadway. </li></ul><ul><li>Biofiltration media captures 0.8” + 1.3” ponded = 2.1” treated </li></ul><ul><li>96% Total Suspended Solids (TSS) removal efficiency – well beyond 80% design goals </li></ul>
  11. 11. Pre and Post Development Hydrograph
  12. 12. Landscape Plan <ul><li>10 Project Star Icons – the Battle of San Jacinto led to annexation and to the Mexican </li></ul><ul><li> War, resulting in the addition of 10 States to the United States of America. </li></ul><ul><li>46 planting swaths of native single-species plantings within median – represent the </li></ul><ul><li>46 days between the fall of Alamo and the Battle of San Jacinto. </li></ul><ul><li>18 tree clusters - represents the 18 minutes of the Battle of San Jacinto. </li></ul><ul><li>Musical interpretive roadway pavement. </li></ul>A B C D B C D A
  13. 13. Musical Interpretive Roadway <ul><li>The northbound lane is the route that Texas Republic forces traveled to the Battle of San Jacinto. Cadence for the Texas force’s advance was provided by a drummer playing, “Will You Come to the Bower”. </li></ul><ul><li>The outside northbound travel lane will incorporate scored and grooved concrete to play this tune when traveling 35 MPH. </li></ul>Click picture to watch video if web enabled.
  14. 14. Implementing San Jacinto Masterplan <ul><li>Excavated material to fill in reflecting pond as called for in San Jacinto Masterplan (2004) </li></ul><ul><li>The proposed roadway spoils will restore a core element of the San Jacinto Battleground to its historic character. </li></ul>Independence Pkwy. Import Fill
  15. 15. Cost Evaluation <ul><ul><li>Reclaimed Roadway vs. Conventional Roadway </li></ul></ul><ul><ul><li>Capital Cost Savings of 12% (over project life-cycle costing) </li></ul></ul><ul><ul><li>$120 per LF savings in financing costs </li></ul></ul><ul><ul><li>Reduces depth of outfall channel. </li></ul></ul><ul><ul><ul><li>Using a shallow channel for storm water conveyance/detention along the roadway provides for the shallower outfall channel – reducing right-of-way requirements and capital cost. </li></ul></ul></ul><ul><ul><ul><li>Outfall capacity from county roadways has always been a key consideration in the County, and it will increase in importance as improvements extend into the western portions of the County where drainage depth is a critical issue. </li></ul></ul></ul>Conventional Roadway Reclaimed Roadway Comparison Project Independence Pkwy Component Cost Per LF Cost Per LF Delta Site Preparation $53 $53 --- Paving $567 $567 --- Signals $85 $85 --- Excavation $50 $75 $25 Storm Sewer $200 $25 ($175) Filtration Pond --- $70 $70 Temp Paving $45 $5 ($40) Total $1,000 $880 ($120)
  16. 16. Carbon Footprint <ul><li>Significant reductions in carbon emissions were attained by sourcing incoming materials locally and finding local re-uses for any material leaving the roadway. </li></ul>Material Distances from Site
  17. 17. Ecosystem Services <ul><li>The Reclaimed Roadway design provides the following ecosystem services: </li></ul><ul><ul><li>Carbon sequestration </li></ul></ul><ul><ul><li>Local and global climate regulation </li></ul></ul><ul><ul><li>Air and water cleansing </li></ul></ul><ul><ul><li>Water supply and regulation </li></ul></ul><ul><ul><li>Erosion and sediment control </li></ul></ul><ul><ul><li>Native habitat restoration </li></ul></ul><ul><ul><li>Pollination </li></ul></ul><ul><ul><li>Habitat </li></ul></ul><ul><ul><li>Cultural benefits </li></ul></ul>
  18. 18. Sustainable Sites Initiative <ul><li>The Sustainable Sites Initiative is a newly released rating system for landscape sustainability developed by the American Society of Landscape Architects, the Lady Bird Johnson Wildflower Center, the U.S. Botanic Garden, and over 30 experts from around the country. </li></ul><ul><li>We have applied this rating system to our Reclaimed Roadway concept for Independence Parkway to assess the sustainability of our design, achieving approximately 155 Sustainable Sites Initiative points making it a 3 star project (out of 4). </li></ul>
  19. 19. Community Benefits of a Reclaimed Roadway <ul><li>Low Impact Development </li></ul><ul><li>Low impact materials as well as low impact development. </li></ul><ul><li>Enhanced quality of life values through improved water quality and stormwater detention. </li></ul><ul><li>Context Sensitive Solutions </li></ul><ul><li>Interpretive experience and an enhanced connection with Texas history. </li></ul><ul><li>Transferable Renewable Technology </li></ul><ul><li>“ Cradle-to-cradle” recycling of industrial waste products. </li></ul><ul><li>Lower lifecycle costs and a far more sustainable roadway development. </li></ul>

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