Interesting - I thought the whole point of BFT (Blown fibre Tubing) was to avoid any stress on the fibre, ie, the tube is manhandled and pulled (with high amounts of force and some stretch) into the ducts,
It seems that BFT tubing poses more of a problem - either because it is much larger, and suffers where ducts are congested, or because it can't cope with lightly blocked/silted ducts.
This was mentioned in a previous presentation on NGA2, where BFT had the disadvantage of requiring digging teams to turn out to unblock ducts more regularly.
One of the points with the SST fibre was the dual steel strength members that allow for the push/pull technique to be used - and we can see the numbers here.
At least, that's the theory. The trial will tell us (well, BT) whether it works out better in practice.
B4RN use blown fibre - if a bunch of amateurs can do it just proves how incompetent BT/Openreach are.
B4RN uses blowing in a number of ways, but they, of course, are blowing fibre down a virgin duct that they just installed. Little need for dealing with duct blockages to get either their outer duct into place or the cable blown into it. Even with virgin duct, they've had to deal with rodent issues.
BT's bigger problem isn't blowing fibre down BFT tube (except for the overhead of setting up the blower for an individual customer), but is about getting the empty tubing into place.
Can' see using ready made cable is going to lead to any improvement in productivity, separate lengths will need splicing plus risk of finding the cable has failed with snapped fibres after pulling in long lengths.
Looking at the pole-mounted Corning hardware, with the pre-terminated cable attached, it appears to be orderable with different lengths of fibre: 50m, 100m, 150m and 200m.
As the fibre only has to go back to a DP or a splitter, shared amongst 20-120 homes, it isn't likely to need to be any longer.
Snapped cable is a different thing - but presumably the design of the cable is meant to cope with this. This is the kind of stuff they are using:
Whichever way they try to install their main issue is going to be areas with no ducts (most pre 1990 housing estates).
Certainly the unducted underground properties are the headache. But are you referring to the final lead-in to the home being unducted, or the main street infrastructure (between chambers)?
I've got something that tells us a split of the wiring types in the UK. I'll dig it out...