Cost of fiber run between neighbouring office buildings
Hi folks, I wonder if I can tap into some knowledge on the list and ask for ballpark figures on how much it would normally cost to run 2 fiber cables between 2 adjacent office buildings. I have a quote from a contractor, and I want to make sure i'm not getting totally fleeced. The conduit is in place between the buildings. The work entails: - 2 x 6-Strand 50/125u multimode, Tight Buffered, Armoured, Laser Ultra-Fox Fiber cables - Distance of run is approx 520 meters - Total of 8 terminations (2 strands on each end of links) - Testing, documentation Thanks, Hank
On 02/10/2012 13:35, Hank Disuko wrote:
- 2 x 6-Strand 50/125u multimode, Tight Buffered, Armoured, Laser Ultra-Fox Fiber cables - Distance of run is approx 520 meters
For that length, go with single-mode. 10G-LR will happily run on 10km of SMF, but 10G-SR flakes out at ~300m even on OM3. Laying outdoor MMF plant like this is totally pointless. Using MMF for anything outside your cabinet / small cage is creating a legacy deployment on day 1 which will bite you in future years. To answer the question you asked: if the ducts are already in place and you're just pulling fibre through, you should have a breakdown in terms of # of terminations + the manpower required to handle the pull + cable finishing. I.e. it shouldn't be very much. If you need ducting laid or if your existing ducting is in poor shape, that's a different issue. Nick
Second what Nick said. Also, get quotes for double, quadruple, and more of the number of fibers you think you need today. If it makes economic sense to leave strands unterminated (coil neatly in the splice tray and have someone term later) by all means do it. Extra strands in the cable are almost free compared to the labor to pull it in. -r Nick Hilliard <nick@foobar.org> writes:
On 02/10/2012 13:35, Hank Disuko wrote:
- 2 x 6-Strand 50/125u multimode, Tight Buffered, Armoured, Laser Ultra-Fox Fiber cables - Distance of run is approx 520 meters
For that length, go with single-mode. 10G-LR will happily run on 10km of SMF, but 10G-SR flakes out at ~300m even on OM3. Laying outdoor MMF plant like this is totally pointless. Using MMF for anything outside your cabinet / small cage is creating a legacy deployment on day 1 which will bite you in future years.
To answer the question you asked: if the ducts are already in place and you're just pulling fibre through, you should have a breakdown in terms of # of terminations + the manpower required to handle the pull + cable finishing. I.e. it shouldn't be very much. If you need ducting laid or if your existing ducting is in poor shape, that's a different issue.
Nick
Where I work for a local telecommunications provider, we will not run any fiber smaller than 24 strand, and these days that is a drop into a building. When talking about single mode fiber, the cost per foot difference in 2, 8, or even 24 strand is typically a matter of less than $1 per foot. Some of the prices I've seen lately on google indicate about $.4/ft for 2-strand, $.5/ft for 6-strand, and $1.8/ft for 24-strand It's all about the cost of getting it run by a contractor (which is typical if you have to get conduit installed, or run along telephone/power poles aerial) , unless you're in a position to do it yourself. You'd likely have to pay someone to terminate it into a patch panel for you, but it may be cheaper for them to do all strands at once as opposed to having them come back later. ----- Original Message ----- From: "Robert E. Seastrom" <rs@seastrom.com> To: "Nick Hilliard" <nick@foobar.org> Cc: "NANOG" <nanog@nanog.org> Sent: Tuesday, October 2, 2012 9:48:33 AM Subject: Re: Cost of fiber run between neighbouring office buildings Second what Nick said. Also, get quotes for double, quadruple, and more of the number of fibers you think you need today. If it makes economic sense to leave strands unterminated (coil neatly in the splice tray and have someone term later) by all means do it. Extra strands in the cable are almost free compared to the labor to pull it in. -r Nick Hilliard <nick@foobar.org> writes:
On 02/10/2012 13:35, Hank Disuko wrote:
- 2 x 6-Strand 50/125u multimode, Tight Buffered, Armoured, Laser Ultra-Fox Fiber cables - Distance of run is approx 520 meters
For that length, go with single-mode. 10G-LR will happily run on 10km of SMF, but 10G-SR flakes out at ~300m even on OM3. Laying outdoor MMF plant like this is totally pointless. Using MMF for anything outside your cabinet / small cage is creating a legacy deployment on day 1 which will bite you in future years.
To answer the question you asked: if the ducts are already in place and you're just pulling fibre through, you should have a breakdown in terms of # of terminations + the manpower required to handle the pull + cable finishing. I.e. it shouldn't be very much. If you need ducting laid or if your existing ducting is in poor shape, that's a different issue.
Nick
On Tue, Oct 2, 2012 at 9:01 AM, Nick Hilliard <nick@foobar.org> wrote:
On 02/10/2012 13:35, Hank Disuko wrote:
- 2 x 6-Strand 50/125u multimode, Tight Buffered, Armoured, Laser Ultra-Fox Fiber cables - Distance of run is approx 520 meters
For that length, go with single-mode. 10G-LR will happily run on 10km of SMF, but 10G-SR flakes out at ~300m even on OM3. Laying outdoor MMF plant like this is totally pointless. Using MMF for anything outside your cabinet / small cage is creating a legacy deployment on day 1 which will bite you in future years.
I second what Nick said. Single mode for anything longer than a few meters. *IF* you have existing conduit, consider just buying an AMP Lightcrimp Plus kit, picking up some single mode from ebay and doing it yourself. Each Lightcrimp Plus termination is expensive so you wouldn't want to use it for a large job or a large set of jobs, but they've reduced the difficulty level to about what you're used to for RJ45. You could end up in a break-even situation that leaves you with a tool set for next time. You can also buy pre-terminated fiber assembly with a pulling eye and cable netting at one end for pulling it through the conduit. But you'll probably have to go with new fiber; not much in the way of long preterminated cables show up in the used market. If you don't have conduit already, consider: Conduit requires trenching and repair of surfaces afterwards. Big dollars and God help you if you get an amateur because Home Depot doesn't stock the right pipe. Direct burial is cheaper for single installations but you have to keep paying the whole price if you add to it later. Worse really, because each new installation has to carefully avoid cutting the ones before. Conduit, once installed, can support lots of additional cable. Microduct is a happy medium between the two. It's about as easy to install as direct burial cable and once installed you can both blow new fiber through unused ducts and remove obsolete fiber from existing ducts. Microduct even installs well across roadways with a machine that looks like a four-foot circular saw. They can seal the road overtop with tar instead of having to patch or repave which is a major cost savings. Unlike conduit, microduct really only works for fiber. If you also want to run some copper lines, you can't do it. Regards, Bill Herrin -- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
----- Original Message -----
From: "Hank Disuko" <gourmetcisco@hotmail.com>
I wonder if I can tap into some knowledge on the list and ask for ballpark figures on how much it would normally cost to run 2 fiber cables between 2 adjacent office buildings. I have a quote from a contractor, and I want to make sure i'm not getting totally fleeced.
The conduit is in place between the buildings.
The work entails:
- 2 x 6-Strand 50/125u multimode, Tight Buffered, Armoured, Laser Ultra-Fox Fiber cables - Distance of run is approx 520 meters - Total of 8 terminations (2 strands on each end of links) - Testing, documentation
I had one 6-strand direct burial run through as-had 4-inch pvc between two of my buildings about 4 years ago, IIRC, the final price was on the order of $1300 for about a 300m run; terminated in ST boxes at each end I don't recall if he furnished the patches or if we bought them ourselves; I think the latter. They had to split the pipe halfway and put a pullbox in/over. What did they quote you? PS: protip: split those 2+2 instead of 3+1 for better redundancy. :-) Cheers, -- jra -- Jay R. Ashworth Baylink jra@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA #natog +1 727 647 1274
participants (6)
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Hank Disuko -
Jay Ashworth -
Nick Hilliard -
Robert E. Seastrom -
Walter Keen -
William Herrin