Changes

Roof catchment area can be estimated using one of many online digital maps. e.g. Distance can be measured on Google maps by right clicking on the desired start point. <br>

Roof catchment area can be estimated using one of many online digital maps. e.g. Distance can be measured on Google maps by right clicking on the desired start point. <br>

1 mm of rain landing on 1 m² of roof top  produces 1 litre of water to store. <br> So a 5 mm storm on a 75 m² roof would require 375 L of storage volume. <br>

1 mm of rain landing on 1 m² of roof top  produces 1 litre of water to store. <br> So a 5 mm storm on a 75 m² roof would require 375 L of storage volume. <br>

Rain barrels or cisterns are readily available in pre-formed plastic up to around 500L. <br>  

Rain barrels are readily available in pre-formed plastic in a variety of sizes, ranging from 150 to 200L (typical) up to 500L. <br>  

Alternatives include:  

Alternatives include:  

*modular systems to increase total storage capacity,

*modular systems to increase total storage capacity,

*slim designs to fit small spaces,  

*slim designs to fit small spaces,  

*aesthetic designs for high profile locations,   

*aesthetic designs for high profile locations,   

Many people choose to reuse or recycle a container as a rain barrel or cistern. Re-purposed containers should be screened to prevent [[Wildlife#Mosquitoes|mosquitoes]] from breeding, and should be opaque to prevent algae from growing.  

Many people choose to reuse or recycle a container as a rain barrel or cistern. Re-purposed containers should be screened to prevent [[Wildlife#Mosquitoes|mosquitoes]] from breeding, and should be opaque to prevent algae from growing.

 

==Performance==

==Performance==

{{:lit review}}

{{:lit review}}