When most people think about rainfall they think about the amount of rainfall . . . . . . . . . but it’s just as important to understand how hard it can rain, the ’Rainfall Intensity’.
The ‘Rainfall Intensity’ is important when thinking about things like; Roof Gutters, Down Pipes, Stormwater Pipes , Tank [read more...]
This is a fairly typical rainwater collection installation.
Gutters discharging to a pipe which discharges onto a screen fitted to the tank access point, cheap and cheerful!
I must have seen it hundreds of times . . . . . . but it has some negative implications on the water quality you will get [read more...]
Thanks to SaveH2O, of Supadiverta
This diagram indicates a charged rainwater collection system. These are sometimes called either a “wet” or a “pressure” system.
NB. This diagram has been simplified for clarity. A leaf diverter, and an adequate overflow, must also be fitted.
With this type of system a section of [read more...]
How Not to collect rainwater!
I suppose its cheap…….but it’s not the most convenient for filling your watering can from.
You can also see that algae is growing in all those open containers.
It’s not something most of us would want on our front gardens!
On the plus side it probably looks [read more...]
One of the reasons why most rainwater systems use too much power is because because the pump is too big. For other reasons see Rainwater – Pump Issues
Most pump suppliers and design charts will specify a larger pump than you really need (They sell a more expensive pump, It’s less likely that the pump [read more...]
The vast majority of new houses will have a conventional (sometimes called a Gravity, or Open system) storm water drainage system discharging to either:
Public Surface Water Drain – Typically in Eastern States Soakwells on Sandy Sites – Mainly in WA
With a conventional system like this the pipes are either vertical or [read more...]
It’s important to make sure you are getting the right type of pipes and fittings that will be underground…..you don’t want to be digging them up in case of blockages.
Some plumbers will want to use and bury 90 mm diameter rainwater pipes, basically plastic downpipes.
You need to make sure you are getting [read more...]
In a post on Outlet Location I talked about improving the water quality by avoiding taking water from the bottom of the tank.
This post shows how you can keep the floating particles on the top of the water out of your supply for just a few dollars.
Mid Level Outlet
In order to [read more...]