Another method calls for gutters to be held in place by straps fastened to the roof.
Cistern no gutters.
The cistern typically located underground may be constructed of various materials including cinderblock reinforced concrete or precast concrete fiberglass or steel.
This is a cistern i made from some pressure treated 2x6 material and a 55 gallon plastic juice drum.
Screwed connections are stronger.
Traditionally this involves harvesting the rain from a roof.
Half round gutters rest in brackets screwed to the fascia.
Remember that the x section of a 4 pipe is twice that of a 3 pipe.
A system of gutters and downspouts directs the rainwater collected by the roof to the storage cistern.
Install standard size mesh gutter covers over the entire gutter that will lead into the cistern.
Put them where they need to be.
It is more important that you have unrestricted flow into the cistern.
Sweep all debris from the roof and gutters leading to the chosen downspout by using a broom.
Cistern covers are 2 x2 and are cast in the floor.
I got the used drum locally for 15 and the wood came from my scrap bin.
This technique is usually only used when there s no fascia board.
K style gutters can be spiked or screwed to the fascia.
The rain will collect in gutters that channel the water into downspouts and then into some sort of storage vessel.