Monitoring and Modeling of the CDOT Blue Island/Cermak Streetscape
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Monitoring and Modeling of the CDOT Blue Island/Cermak Streetscape
- 1. Monitoring and Modeling of the CDOT Blue Island/Cermak Streetscape Joseph Kozak, PhD, PE MWRDGC Sustainable Streets for Chicago June 17, 2009 METROPOLITAN WATER RECLAMATION DISTRICT OF GREATER CHICAGO
- 4. Background – Project Map MWRDGC
Editor's Notes
- TDR measures permittivity (dielectric constant) of a material from wave propagation, and the fact that there is a strong relationship between the permittivity of a material and its water content The suction lysimeter was a cylindrical device consisting of a porous ceramic cup (to withdraw soil pore water); a body tube to act as a reservoir; and a simple stopper assembly with a single hole for pulling a vacuum and retrieving the sample.
- Existing Conditions model used to define dynamic model that performs full solution to governing flow equations simplified TARP representation
- slide1: This is the Infoworks program. The network is shown on the main page, with lots of the modeling components( network , rainfall, runs etc) on the left hand side. the inset graph shows the runoff hydrograph for a single subcatchment
- -reduce size of subareas from roughly 40 acres to roughly 1 acre still significant abstraction- i.e. not EVERY catch basin, or pipe, is explicitly modeled. nevertheless, the level of detail allows us to understand the design slide 3: top- shows the infiltration loss (green) EXFILTRATIN and volume of storage for a BMP structure bottom- shows the flow into and out of a BMP node. the difference in the integral of each line is the volume reduction to City system
- Sensitivity-different rainfall events, increased depth of infiltration basins, reduced infiltration of pavers
- slide 4- highly conceptual figure- as we have not performed this analysis yet. pink line- shows potential reduction in basement flooding risk . you'll notice the line slopes more with higher BMP reduction. this is just an assumption on my part, thinking that small amounts of flow reduction may have some benefit, but larger changes may have a larger impact proportionally (we can talk through if you want to) blue line - wrp flow reduction. on second thought this maybe should be linear- but just shows the volume reduced to wrp