Hi beetleone,
Nope we didnt, as the builder will end up having us signed a document that keep them clean if ever something happens with
the downpipe or gutter having problems

Yeah I'll emphasize "serve no more than 12 m of guttering"
because they keep emphasizing "to comply with the NCC (minimum 12m between downpipes, with a recommendation to have downpipes as…

Here is my revision 2
I move up HP 3 closer to D3 and HP 5 closer to D6
I will also edit this one and put red arrows for the flow…

Ive drafted the plan on my software. Turns out it is feasible to remove the down pipe considering the regulations.

Thanks SaveH2O,
I tell them exactly everything you say and propose including the standards yet they
dont take it or consider it.
I really dont know what to do to convince them.

As of now, this is the builder's reply:
As mentioned, the options for this downpipe, are limited to either:

being located on the porch pier as indicated on the preliminary plans
being…

As for the gutter. The builder said they will use this type(see picture)

Ive got a roof plan area of 133mm2 * 1.23 = 164.21mm2 - total catchment area
im stuck with step 3: select eaves gutter catchment area slope factor
Im sure step…

saveh2O , from your experience, what eaves gutter catchment area slope factor should i use in my calculation

ill have to calculate my roof plan area.
so that I can get the total roof catchment area

Is the AS3500.3 in NCC Volume 2?
Where can I download it.

Ok sorry, ive been reading the BCA 3.5.3.5
sorry ive missed out some infos
ill try to ask my builder about this one

Hi Save,
I current draw the gutter length(in yellow hightlight) apparently i got Total length of 12220.
If ill adjust the down pipe a little bit to have below 12meters. Is this…

Thanks Very much for the information. Really appreciate it SaveH20.
Im asking our builder what gutter specs they are using for the build.
What gutter specs is it needed in order…

Thanks Very Much SaveH20!
This very informative.
So you mean to say that we can remove the balcony downpipe,
do gutter resloping and maybe add 1 downpipe at the sitting side? like this(see…

Yes, the house in the picture has the same estate as ours.

Really dont know how this house made its downpipe since we have a common facade layout

Hi Save,
Im from NSW
here are the roof dimension/rough measurements and the roof pitch
downpipe size is 90mm diameter

Is it ok to remove this downpipe?
Because our builder says we cant.

Also we found a house that is similar to us.
It has no downpipe installed in that area.
Please help us…