Question regarding BT Openreach FTTP installation

I'm building a house and have been in talks with Openreach to get FTTP. But I'm not sure what I have to do in terms of laying ducting down etc.

I know I'm supposed to have a joint box built. Does this mean I have to lay ducting from the room I wish to have the modem right to the joint box - this is the PDF that the openreach rep provided me:
https://www.openreach.com/content/dam/openreach/open...

I was planning to put all my networking gear under the stair. I've got CAT6 ports in every room where I'll require wired internet and will be using a patch panel, which will then connect to a network switch, which will subsequently obtain 'internet' from the BT router/modem.

As this will be all discreet and hidden away, I wanted to keep it that way so the BT engineers could feed the Fibre cable directly to this site.

I was planning on laying down 20mm pipe/conduit from the stair closet all the way to the outside of the property to facilitate that. Or should I extend the conduit to inside that junction box?

I had hoped the process of getting FTTP would be painless but it seems all the work has to be done by the developer!

You’ve only got a relatively small part of the overall picture with the JBs guide. The full suite of guides and handbooks can be found here:

https://www.openreach.com/building-developers-and-pr...

If I was you I would go back to the rep, they should have explained a lot more than just saying about a JB (hopefully they suggested a modular Stakkabox). You need ducting from the JB to the outside wall of the property, I would recommend 'BT duct 56' which is 54mm grey ducting. If you don't want the ONT put on the hallway or lounge wall you will also need an OFS fibre cable (used by most developers) run from the outside wall to under the stairs before you plasterboard the walls/ceilings of your new house. I would recommend installing one of these subject to the length you need https://www.ebay.co.uk/itm/314125683499

There is so much you need to know before you start doing this.

If you want your network equipment under the stairs away from external walls then bury duct 56 to wherever the connection outside your boundary is going to be, but then also run duct between this location and your under stairs location.

You can't duct right into your house because any gas leaks or water that fills the duct is going to come up into your house, but by using ducting rather than simply running the fibre cable it means that any altnet using PIA can install, you can have the fibre cable replaced in future if there are faults etc.

See page 20 of the new sites fibre handbook for an idea of what I am talking about.

Its not me who needs advice so best direct your posts to the OP

Thank you - you have all explained this much better than the BT engineer.

I'll lay conduit from stair case to outside property, and then I'll use BT's ducting to facilitate access from just outside the property to the junction box.

Would a 32mm conduit be sufficient for future proofing purposes? I'll be running 32mm conduit from under the stairs (network area) to nearest wall where the engineer can feed wires from the BTjunction box. I could buy a bigger conduit if needed however.

Does anyone know what kind of Fibre Optic cable BT use? OS1? OS2? OM1/2/3?

OS2 is rated to run at 400G.

I could feed this through the conduit as suggested above if it simplifies the installation for the Openreach engineer:
https://www.ebay.co.uk/itm/314125683499

32mm will be more than enough. Don't bother buying any fibre cable, just leave a draw string in the conduit.

Could you clarity if you putting the conduit in the slab from under the stairs to the outside wall or if its going up and over and down through the fabric of the building as this may affect the advice you're given?

In reply to a post by RAY21:

Would a 32mm conduit be sufficient for future proofing purposes? I'll be running 32mm conduit from under the stairs (network area) to nearest wall where the engineer can feed wires from the BTjunction box. I could buy a bigger conduit if needed however.

Does anyone know what kind of Fibre Optic cable BT use? OS1? OS2? OM1/2/3?

OS2 is rated to run at 400G.

I could feed this through the conduit as suggested above if it simplifies the installation for the Openreach engineer:
https://www.ebay.co.uk/itm/314125683499

32mm sufficient.

Openreach drop cable is ITU-T G657.B3 bend-insensitive fibre. Whether it’s rated to 400G or 800G is irrelevant. The optical bandwidth is enormous actually well beyond terrabit on current technology.

Don’t worry you’ll be fine. Leave a decent drawrope. No sharp elbows. Secure any flexi conduit from “bunching” inside cavities.

All conduits (especially those which egress into public networks) should always be properly duct sealed using an appropriate duct sealing foam collar and mastic sealant. I found out the hard way. When our house (still under reconstruction) was closed and evacuated when gas was detected leaking in through open conduit. Culprit was the next door neighbour three doors away. It cost me a few grand in loss and expense and reworks. Lesson learned.