Posts

Showing posts from August, 2011

The Cheerful World Of Japanese Manhole Covers

Image
From the Dish and Andrew Sullivan “The Cheerful World Of Japanese Manhole Covers”

The Cheerful World Of Japanese Manhole Covers
by Maisie Allison Michelle Aldredge introducesus to a minor feat in public art: One of my favorite book discoveries this summer is Drainspotting  by Remo Camerota. The book celebrates an array of fascinating manhole cover designs from Japan. According to Camerota, nearly 95% of the 1,780 municipalities in Japan have their very own customized manhole covers. The country has elevated this humble, practical object to its own art form. The designs depict everything from local landmarks and folk tales to flora and fauna and images created by school children. Camerota explains the evolution of these custom covers in Drainspottinghttp://www.gwarlingo.com/2011/drainspotting-61-amazing-manhole-covers-from-japan/
“In the 1980s as communities outside of Japan’s major cities were slated to receive new sewer systems these public works projects were met with resistance, until on…

SWMM 5 - One Hour Rainfall Subcatchment Pathways

Image

Map Display of LID Usage in SWMM 5

Image
Subject:   Map Display of LID Usage in SWMM 5
A new Map Display feature in SWMM 5.0.022 is the LID Usage parameter which shows you whether a Subcatchment has LID’s or not.   You use it by using Map Display and choosing LID Usage as the Map Display.  LID - Low Impact Development.
 Map Display of LID Usage in SWMM 5




Example VSP Pump in SWMM 5 - Version 1

Image
Subject:   Example VSP Pump in SWMM 5 - Version 1
Here is one way to model multiple pumps between the same downstream and upstream nodes using the pump curves and the Real Time Control Rules (RTC) in SWMM 5.  Here are the steps:

1.Enter the data for three pumps in the browser by using the Add Pump Icon
2.Enter three Pump Head/Flow Curves so that the 2nd and 3rd Pump Curves are the sum of the flows in the 1st and 2nd Pumps together and the sum of the flows in the 1st, 2nd and 3rd respectively for the 2nd and 3rd Pump Curves

3.Enter a RTC Rule in the Control Editor so that when the 1st Pump is turned on – the 2nd and 3rd Pump is turned off
4.Enter a RTC Rule in the Control Editor so that when the 2nd  Pump is turned on – the 1st  and 3rd Pump is turned off
5.Enter a RTC Rule in the Control Editor so that when the 3rd  Pump is turned on – the 1st and 2nd Pump is turned off

Using these rules you can see that for the 1st Pump turns on when the Node WetWell has a depth below 2 feet, the 2nd Pump t…