Guttering for circular earthbag studio?

Greetings

Any advice on how to do a curved gutter on a circular earth bag building? Cheaply!

I have a flat sloping roof, which will be a green sedum roof eventually

I have seen an earthbag building that uses drain tile, "non-perforated", as gutter for curved roofs.  They collect all their rain water, and they've been using it for years so far.

Put a square roof on your round house.

Hi Cath,  we have a straw bale Science centre at my school with curved walls. The plumbers just notched out the back about every yard or so and added silicone sealant, hasn't leaked. You have a tighter curve so you'd need more notches.
Regards Dave.

Hi Cath, by looking at the picture you posted I don't think a gutter is your biggest problem.
By the type of trees you have, I would say you are in the PNW. Did you use concrete bags on the bottom row?
And it is way too close to the tree to the right. It looks like you have a concrete sidewalk right next to the building. When it rains you are going to get alot of slashing water on the building, not good.
Did you put two rows of barbwire in between the rows of bags? It doesn't seem that you have enough drainage around your building either.

Correction to previous post " a lot "

I've seen a few use the corrugated black drain pipe (unperforated) as a gutter along the edge of living roofs. I even saw one on a metal roof, split in half and secured with zip ties. Not much cheaper than that.

cables 7 fibre optic cables under ground     the s  ..6

Cath Brown wrote: Greetings

Any advice on how to do a curved gutter on a circular earth bag building? Cheaply!

I have a flat sloping roof, which will be a green sedum roof eventually

My thoughts for what they are worth :-

Can you get hold of some  4 or 6 inch dia ribbed twin thin walled plastic pipe  ?  The sort of pipe that you run low voltage cables & phone cables under ground .
It's as cheap as chips here in great Britain / The UK  £25 including taxes for a six metre length .

If so  make up a simple wooden trough jig so you can cut it in half along its entire length using a 24 teeth per inch  20 inch long hand saw for cutting plastic tube
That will give you 13 yards of semi circle  shaped guttering that can be screwed on to wooden pegs every foot or so and bent round the walls very easily .

Maybe try a flat roof as suggested, with a curved front to look good, and the straight line of a square roof at the back for wall protection and ease of gutter inhalation. I use roofing iron as guttering, it does not hold the leaves because the dry and blow away rather than lay there trapped.