Storm Water Attenuation design parameters
Storm Water Attenuation design parameters
(OP)
Here is a philosophical question:
We have a new building to be constructed on a site where the storm water run off will discharge through an attenuation facility. After periods of heavy rain the tank will be full of water and will take about two days to empty. The location has quite high annual rainfall.
There is a risk of fire within the building and a sprinkler system is to be installed. If there is a fire the fire water will enter the attenuation tank which will be automatically sealed to prevent outfall. The tank is sufficient to hold the total amount of fire water.
Now we have established a method of draining the tank down during a fire so this problem did not effect the design, but how much storm water, if any, should we consider to be present in the tank during a fire event?
We have a new building to be constructed on a site where the storm water run off will discharge through an attenuation facility. After periods of heavy rain the tank will be full of water and will take about two days to empty. The location has quite high annual rainfall.
There is a risk of fire within the building and a sprinkler system is to be installed. If there is a fire the fire water will enter the attenuation tank which will be automatically sealed to prevent outfall. The tank is sufficient to hold the total amount of fire water.
Now we have established a method of draining the tank down during a fire so this problem did not effect the design, but how much storm water, if any, should we consider to be present in the tank during a fire event?





RE: Storm Water Attenuation design parameters
1. You will have some provision for stormwater in the system.
2. Because of the established psychology of the 80-20 rule, the above assumption will be accepted as "reasonable" by many people.
Here is a link on the history of Pareto's Principle
http://
www.SlideRuleEra.net
RE: Storm Water Attenuation design parameters
RE: Storm Water Attenuation design parameters
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"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail."
Wm. Phelps Eno, ca. 1928