Permeable pavements are considered as an effective technique for reducing stormwater runoffs and pollutants. Studies showed that permeable pavements can reduce stormwater runoffs up to 100%. There are many factors affecting the efficiency of permeable pavements to reduce stormwater runoff volume, which may include, but are not limited to the following: type of the permeable pavements, design, installation, site slope and rainfalls. Being studied in this research were the effects of rainfalls on the stormwater volume reduction of three types of permeable pavements: permeable concrete, permeable asphalt and permeable interlocking concrete blocks.
The City of St. Louis started a pilot study in 2008 to evaluate the effectiveness of permeable pavements on runoff volume reduction and quality improvement. For the purpose of the study, three sites were selected in the St. Louis metropolitan area, and their surface covers were replaced with permeable pavements. Then, data were collected for these sites under the conditions existing in 2008 and also after the installation of the permeable pavements in 2011. The collected data, which included rainfalls and flow rates in the combined sewers during the period of the pilot study, were used in this research.
After detailed calculations and analysis of the collected data and comparison of the results, it was found that rainfall intensity affected the volume of stormwater runoff generated from the three sites. When rainfall intensity increased, the volume of the runoff generated per each inch of rainfall increased as well. The results showed that the reduction rates in the volume of the runoff generated due to the use of permeable pavements decreased with the increase in rainfall intensity. All storms that occurred during the study period were divided into four groups based on their rainfall intensities. For group 1, which included all storms whose rainfall intensities were between 0.01–0.25 in/hr, the reductions were 60%, 36% and 69% for permeable concrete, permeable asphalt and permeable interlocking concrete blocks, respectively. For group 2, which included all storms whose rainfall intensities were between 0.25–0.50 in/hr, the reductions were decreased to 28%, 24% and 53%, respectively. For group 3, which included all storms whose rainfall intensities were between 0.50–0.75 in/hr, the reductions were decreased to 21%, 15% and 27%, respectively. For group 4, which included all storms whose rainfall intensities were between 0.75–1.00 in/hr, the reductions were decreased to 10%, 9% and 22%, respectively.
|School:||Southern Illinois University at Edwardsville|
|School Location:||United States -- Illinois|
|Source:||MAI 53/02M(E), Masters Abstracts International|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be