[193237] in North American Network Operators' Group
Re: microducts
daemon@ATHENA.MIT.EDU (Jared Mauch)
Fri Dec 30 00:56:31 2016
X-Original-To: nanog@nanog.org
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <03fb32c5-3377-a158-3b6e-d0024efee7af@gmail.com>
Date: Thu, 29 Dec 2016 21:17:03 -0500
To: Baldur Norddahl <baldur.norddahl@gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
> On Dec 29, 2016, at 4:45 PM, Baldur Norddahl =
<baldur.norddahl@gmail.com> wrote:
>=20
> Hi
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> I am planing a new FTTH outside plant deployment. We are going to use =
microducts but which system is the best? I see many resources describing =
the options available but few if any will take a stance on which one to =
choose.
>=20
> Some of the choices are:
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> 1) Ducts with larger fixed tubes for direct burial 12/8 mm. Typically =
7 ducts in a larger tube.
> 2) Ducts with smaller fixed tubes 5/3,5 mm. Typically 24 small tubes =
with one larger centre tube for backbone.
> 3) Ducts for direct burial arranged in a stripe side by side instead =
of in a tube. 12/8 mm ducts. Makes it easier to access the tubes and =
avoids problems with tubes of different length on the drum.
>=20
> And many more variations.
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> I am planing to deploy in an area with the average distance between =
houses of 10 meters (actually 20 meters but we can serve both sides of =
the road from one walkway, so that makes it 10 meters average).
>=20
> I want to support a low level of initial uptake of just 10%. The =
problem is that most sources assume that I am planing for anything =
between 100% and 50%. I do expect that we will get more customers than =
just 10%, but the solution might become too expensive, if I have to pay =
all costs upfront years before I have any hope of that many customers.
>=20
> Some people say just put a lot of plastic down because it is so cheap. =
But it really isn't. I need to put down the correct amount of tubes =
because tubes are everything but cheap. I also need a system that is =
easy and quick to work with because labour is very expensive (but also =
very skilled) around here.
>=20
> I would appreciate any pointers to articles about this subject.
I can provide you some advice from a local person in my area that is =
doing this, while homes aren=E2=80=99t of such a nice identity of 10 =
meters, they place a pedestal that has capacity for 96 count splice =
trays at every 3rd home. You can use something like a flat drop cable =
to be buried later as that connection. They may also drill up to the =
home or use a maxi or mini-sneaker type device to directly place the =
duct in the ground from that pedestal.
The bonus of this type of solution is in the winter months where the =
ground is frozen you can often leave this cable on the ground to be =
buried at a later date. I helped a local WISP turn up their first fiber =
link in the past two weeks and this was the strategy they took.
- Jared=
