RDII Parameters for SWMM 5

Subject:  RDII Parameters for SWMM 5

There are three types of RDII Response, six different parameters and an annual and optional twelve monthly sets of distinct parameters.

RDII Parameters for SWMM 5 by dickinsonre Subject:  RDII Parameters for SWMM 5 There are three types of RDII Response, six different parameters and an annual and optional twelve monthly sets of distinctparameters.

RDII Intial Abstraction in SWMM 5

Subject:  RDII Initial Abstraction in SWMM 5

RDII Initial Abstraction in SWMM 5 by dickinsonre Subject:  RDII Initial Abstraction in SWMM 5  The initial abstraction in each of the three components of RDII in SWMM 5 are updated at each time step.  The initialabstraction (ia) is:  ia = iaMax - iaUsed  based on the maximum amount of ia, the ia used (iaUsed), the recovery rate (iaRecov) and the month and class of RDII.  You can enter a value for iaMax, iaInit and iaRecov for each month.    The iaUsed at the beginning of the simulation is set equal to iaInit and if there is no rainfall via Blogger http://www.swmm5.net/2013/08/rdii-initial-abstraction-in-swmm-5.html

The Groundwater flow in SWMM 5 Groundwater

Subject:  The Groundwater flow in SWMM 5 Groundwater

The Groundwater Flow Component in SWMM5 by dickinsonre Subject:  The Groundwater flow in SWMM 5 Groundwater  The Groundwater flow in SWMM 5 is actually made up of three components:  1.   A groundwater flow computed from the coefficient a1 and exponent b1 2.   A groundwater flow computed from the coefficient a2 and exponent b2 and 3.   A Surface Water / Groundwater Interaction coefficient a3 The total Groundwater flow is the sum of the flow from 1, 2 and 3 – normally 2 is the opposite of 1. via Blogger http://www.swmm5.net/2013/08/the-groundwater-flow-component-in-swmm5.html

Exit, Other and Entrance Loss Values in SWMM 5

Subject:  Exit, Other and Entrance Loss Values in SWMM 5

The entrance, exit and other losses in SWMM 5 are computed at the upstream, downstream and midpoint of the sections of the link.  However, if the normal flow equation is used for the link during a time step then these losses are zero as the flow in the link is based solely on the upstream area and upstream hydraulic radius of the link.   If you add loss coefficients and the normal flow equation is used then you will not see any change in the flow as you modify the loss coefficients.

Exit, Other and Entrance Loss Values in SWMM 5 by dickinsonre Subject:  Exit, Other and Entrance Loss Values in SWMM 5 The entrance, exit and other losses in SWMM 5 are computed at the upstream, downstream and midpoint of the sections of the link.  However, if the normal flow equation is used for the link during a time step then these losses are zero as the flow in the link is based solely on the upstream area and upstream hydraulic radius of the link.   If you add loss coefficients and the normal flow equation is used then you will not see any change in the flow as you modify the loss coefficients. via Blogger http://www.swmm5.net/2013/08/exit-other-and-entrance-loss-values-in.html

Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5

Subject:  Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5

St. Venant equation – this is the link attribute data used when the St. Venant Equation is used in SWMM 5.  Simulated Parameters from the upstream, midpoint and downstream sections of the link are used.

Normal Flow Equation – this is the link attribute data used when the Normal Flow Equation is used in SWMM 5. Only simulated parameters from the upstream end of the link are used if the normal flow equation is used for the time step.

Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5 by dickinsonre Subject:  Link Simulated Parameters used in either the Normal Flow or St Venant Equation of SWMM 5 St. Venant equation – this is the link attribute data used when the St. Venant Equation is used in SWMM 5.  Simulated Parameters from the upstream, midpoint and downstream sections of the link are used. Normal Flow Equation – this is the link attribute data used when the Normal Flow Equation is used in SWMM 5. Only simulated parameters from the upstream end of the link areused if the normal flow equation is used for the time step. via Blogger http://www.swmm5.net/2013/08/link-simulated-parameters-used-in.html

Green Roof LID Control in SWMM 5

Subject:  Green Roof LID Control in SWMM 5

I saw this on the Daily Dish, http://andrewsullivan.thedailybeast.com/2011/07/roo.html, it is an extremely green roof but a roof that can be simulated in SWMM 5.  You simulated it as a Bio Retention Cell with a Surface, Soil, Storage and an Underdrain to the Gutters of the roof.  You can also have a rain barrel connected to the gutters to storage and drain the rainfall. 

Weir and Orifice Flow Equations for a Weir in SWMM 5

Note:  Weir and Orifice Flow Equations for a Weir in SWMM 5

If you use a weir in SWMM 5 then two flow equations are used

1.       The weir uses the weir flow equation when the head at the weir is between the invert elevation of the weir and the crown of the weir and
 2.      An orifice equation when the head is above the weir crown or the weir is submerged.

Weir and Orifice Flow Equations for a Weir in SWMM 5 by dickinsonre

Note:  Weir and Orifice Flow Equations for a Weir in SWMM 5

If you use a weir in SWMM 5 then two flow equations are used

1.       The weir uses the weir flow equation when the head at the weir is between the invert elevation of the weir and the crown of the weir and

2.      An orifice equation when the head is above the weir crown or the weir is submerged.

via Blogger http://www.swmm5.net/2013/08/weir-and-orifice-flow-equations-for.html

Philadelphia Low Impact 
Development Symposium

Greening the Urban Environment

September 25-28, 2011, Philadelphia, PA

Image courtesy of Philadelphia Water Dept.

• Home
• Program
• Abstract Submission
• Registration
• Contact Us

Sunday, September 25, 2011

9:00am - 4:30pm Pre-Conference Workshops
9:00am - 12:00pm - LID 101: Basic Concepts and Applications
9:00am - 12:00pm - Extensive Green Roof Design for Civil/Stormwater Engineers
1:00pm - 4:30pm - LID 201: Design Guidelines for LID Practices
1:00pm - 4:30pm - Permeable/Pervious Pavement

Workshop descriptions can be found by clicking here.

Pre-Conference Workshops
9:00am - 4:30pm
Commonwealth Rooms

Monday, September 26 - Plenary Session

Mr. Howard Neukrug 
Commissioner
Philadelphia Water Department

We are pleased to have Commissioner Howard Neukrug of the Philadelphia Water Department as our Plenary Speaker. Commissioner Neukrug has been the driving force behind the Green City, Clean Waters approach to solutions to the city's Combined Sewer Overflow challenges. Links to the city's plan can be found here:http://www.phillywatersheds.org/what_were_doing/documents_and_data/cso_long_term_control_plan/

Joining Commissioner Neukrug in welcoming the participants will be:

• Robert G. Traver, PhD, PE, WRE, Professor and Director, VCASE and VUSP, Conference Chair
• Tom Davenport - Director, EPA 319 Non Point Source Monitoring Program
• Glen Rider, Director, Bureau of Watershed Management, PA DEP
• Shawn M. Garvin, Administrator for EPA's Mid-Atlantic Region

Photo Courtesy of the Philadelphia Water Department.

Plenary
Monday, 8:30 am
Regency Ballroom

Chesapeake Bay Panel - "LID and the Chesapeake TMDL"

Moderator: Robert G. Traver, PhD, PE, WRE 
Professor and Director, VCASE and VUSP,
Conference Chair

The purpose of this panel is to discuss the role of LID in meeting the TMDL requirements for Nitrogen and Phosphorus reductions in the Chesapeake Bay. Each panelist will be asked to first make a brief overview of their thoughts on the issue. A moderated discussion will follow based upon submitted questions to the moderator. Please feel free to submit questions prior to the conference to the moderator.
(Image Source – USEPA Chesapeake Bay Program Office)

Panel
9:30 am
Regency Ballroom

LID-MARC

Moderator: Bill Hunt, PhD, PE 
Associate Professor, NC State University
Conference Co-Chair

Present and Future Directions with LID Research

Bill Hunt, NC State University
Allen Davis, University of Maryland
Robert Traver, Villanova University

Plenary, Cont'd
10:00 am
Regency Ballroom

Technical Sessions

	Track I	Track II	Track III	Track IV	Track V	Track VI	Track VII	Track VIII
	SCMs I	SCMs II	Assessing LID	Plan & Stnd	Cities & Streets	Models & CSOs	Outreach & Codes	319 & Chesapeake
Monday, September 26, 2011
10:50am	LID/MARC	Monitoring	LID Econ I	DesStand I	Sustain & LID I	Filter/Manuf	Outreach I	319 I
1:40pm	Bioret I	Harscape I	LID Econ II	DesStand II	Sustain & LID II	Models I	Outreach II	319 II
3:40pm	Bioret II	Hardscape II	Metrics	DesStand III	Streets I	Models II	Outreach II	319 III
Tuesday, September 27
8:30am *5*	NonStruct	Philly	VolRed I	Muni Pln I	DC 1	CSOs 1	W'shed Pln I	Ches Fed
10:55am	Bioret III	G. Roof I	VolRed II	Muni Pln II	Streets II	City Pln I	Outreach IV	Panel
1:45pm	Bioret IV	G. Roof II	Attenuat'n	City Pln II	Streets III	Models III	Regs & Code I	319 IV
3:45pm	Media	G. Roof III	Extreme LID	City Pln III	Streets IV	Models IV	Regs & Code II	319 V
Wednesday, September 28
8:30am *5*	O & M	W. Harvest I	Ecology	W'shed Pln II	DC II	CSOs II	Transprt I	Case Studies
10:55am		W. Harvest II	Campus	Climate Ch	Transprt II	CSOs III	Regs & Code III	319 VI

Wednesday, September 28, 2011

Field Tours - 1:00 - 4:30pm
Tour A - Villanova Urban Stormwater SCM Research and Demonstration Park
Tour B - Reinventing the Neighborhood (PWD)
Tour C - Urban LIDs (PWD)
Tour D - Stroud Preserve and Stroud Water Research Center 319 NPS National Monitoring Site

Tour descriptions can be found by clicking here.

Link Here  

Field Tours 
1:00pm - 4:30pm

Updated July 18, 2011