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

Infiltration Data in SWMM 5

Subject:  Infiltration Data in SWMM 5

Infiltration Data in SWMM 5 by dickinsonre Subject:  Infiltration Data in SWMM 5 If you are using Non linear Reservoir Modeling in SWMM 5 there are 1.   Five parameters for Horton Infiltration, 2.   Three parameters for Green-Ampt and 3.   Two parameters for CN infiltration, one parameter (conductivity) has been deprecated by the EPA in SWMM 5.   The Drying Time is used to regenerate the Infiltration Rate for continuous simulation.  Only two parameters are now used for CN infiltration:  The CN value itself and the drying time.    via Blogger http://www.swmm5.net/2013/08/infiltration-data-in-swmm-5.html

A feedback loop involves four distinct stages

A feedback loop involves four distinct stages. First comes the data: A behavior must be measured, captured, and stored. This is the evidence stage. Second, the information must be relayed to the individual, not in the raw-data form in which it was captured but in a context that makes it emotionally resonant. This is the relevance stage. But even compelling information is useless if we don’t know what to make of it, so we need a third stage: consequence. The information must illuminate one or more paths ahead. And finally, the fourth stage: action. There must be a clear moment when the individual can recalibrate a behavior, make a choice, and act. Then that action is measured, and the feedback loop can run once more, every action stimulating new behaviors that inch us closer to our goals, From Wired Magazine http://www.wired.com/magazine/2011/06/ff_feedbackloop/all/1

Status Report Bookmarks in SWMM 5.0.022

Subject:  Status Report Bookmarks in SWMM 5.0.022

RPT File BookMarks for SWMM5

SWMM 5 Slope Rules are Critical to Understand for Short Pipes

Subject:  SWMM 5 Slope Rules are Critical to Understand for Short Pipes

If you have a short pipe and an significant offset depth for the pipe at either the upstream or downstream end of the pipe then the difference between the arithmetic method of calculating the slope and the SWMM 5 method can be noticeably different. 

Three Inertial Term Options in SWMM 5 and InfoSWMM/H2OMAP SWMM

Subject:  Three Inertial Term Options in SWMM 5 and InfoSWMM/H2OMAP SWMM

Three Inertial Term Options in SWMM 5 and InfoSWMM/H2OMAP SWMM by dickinsonre Subject:  Three Inertial Term Options in SWMM 5 and InfoSWMM/H2OMAP SWMM The dynamic wave flow in SWMM5 and InfoSWMM is calculated from the following equation Q  =   (Qold – dq2 + dq3*sigma +  dq4*sigma ) / ( 1  + dq1 + dq5) Where, Qold               =         Last Time Step Flow in the Link dq1                 =         friction loss term dq2                 =         water suface slope + bed slope term dq3                 =         midpoint area non linear term dq4                 =         upstream and downstream area non linear term dq5                 =         Entrance, Other and Exit Loss Term sigma            =         function of the Froude number and a function of the Three Intertial Term Options Figure 1 shows how Sigma is set based on the user selection of the Three Intertial Terms.  Figure 2 shows how Sigma is calculated for the Dampen Option.  If you use Ignore then dq3 and dq4 are ignored all of the time, if you use Dampen then dq3 and dq4 are used for a Froude number less than 0.5 and then the terms gradually fade away until a Froude number of 1 is reached.   If you use Keep then the non linear terms are used all of the time no matter the value of the link Froude Number. There is one exception to this rule: If a closed link is full then the value of sigma is set to 0.0 no matter what is selected for the Intertial Term. Figure 1.  The value of Sigma for each of the Three Inertial Term Options in SWMM 5 and InfoSWMM/H2OMAP SWMM Figure 2.  At each iteration for each link during the simulation the link Froude Number is calculated and based on the Froude Number the value of Sigma is Set. via Blogger http://www.swmm5.net/2013/08/three-inertial-term-options-in-swmm-5.html