Browse
Search
Agenda - 11-24-2003-c1a
OrangeCountyNC
>
Board of County Commissioners
>
BOCC Agendas
>
2000's
>
2003
>
Agenda - 11-24-2003
>
Agenda - 11-24-2003-c1a
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
4/22/2013 3:57:17 PM
Creation date
8/29/2008 10:36:02 AM
Metadata
Fields
Template:
BOCC
Date
11/24/2003
Document Type
Agenda
Agenda Item
c1a
Document Relationships
Minutes - 20031124
(Linked To)
Path:
\Board of County Commissioners\Minutes - Approved\2000's\2003
ORD-2003-142 PD-1-03 State Employees Credit Union Addition Special use permit
(Linked From)
Path:
\Board of County Commissioners\Ordinances\Ordinance 2000-2009\2003
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
80
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
Hillsborough State Employees Credit Union 033 <br />Stormwater Report <br />project # 70994252 <br />computer Model input for Watershed Areas <br />Through the use of HydroCAD, many aspects of the effluent flow were analyzed. The program requires <br />certain input regarding the characteristics of the land. The input required is: <br />L Design Storm Information <br />a. Length of storm <br />V Depth of rainfall <br />c, Time increment for analysis (dt) <br />2. Time of Concentration <br />1 Composite Areas with Corresponding SCS Runoff Curve Numbers <br />An SCS Type 11 24 Hour rainfall distribution was assumed for the storm analysis, with 0.01 -hour <br />increments.. A rainfall of 3.00 inches was used for the one -year storm analysis. For the 10 -year storm, 5.38 <br />inches of rainfall was used. <br />Time of Concentration <br />The time of concentration route was identified as the longest path that water would flow to reach the pond <br />Each route was broken into two segments: sheet flow and shallow concentrated flow. TR55 methods were <br />used to calculate the sheet and shallow concentrated flow times, through the HydroCAD PrOgrarn- <br />Comvosite Areas and Corresponding SCS Runoff Curve Numbers <br />The composite areas were entered into HydroCAD using measurements taken from the design drawings - <br />The corresponding SCS curve numbers were selected based on the surface composition, and can be seen in <br />the HydroCAD reports included in Appendix A. <br />Summary <br />After careful consideration of the pre and post development conditions Department Landscape <br />Employees Credit Union, discussions with the Orange concerns for surrounding watershed into <br />Architects from O'Brien Atkins, and after taking <br />consideration, the proposed stormwater plan was developed. This plan incorporates the existing <br />stormwater structures and the addition of a new underground detention system <br />page 2 <br />08/08/03 <br />
The URL can be used to link to this page
Your browser does not support the video tag.