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Underground Conduit Handholes #210912 08/21/13 02:47 PM
Joined: Jul 2004
Posts: 136
C
cgw Offline OP
Member
If we install a underground conduit (say 3") between buildings (say 600 feet-ish or more) for fiber. For straight runs how far should handholes be spaced for pulling?

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Re: Underground Conduit Handholes [Re: cgw] #210913 08/21/13 08:09 PM
Joined: Apr 2002
Posts: 7,237
HotLine1 Offline
Member
A few considerations:
Fiber mfg specs for pull tension?
Pulling equipment limitations?
Pull rope length?

600' straight may be 'one shot' pull.



John
Re: Underground Conduit Handholes [Re: cgw] #210942 08/27/13 12:23 PM
Joined: Dec 2002
Posts: 317
S
sabrown Offline
Member
EIA/TIA documents and specificaions likely have something to say about this. Other things to consider:

How many different cables with fiber?

Are they in innerduct? Pulling innerduct would limit distances. Some pre-terminated cables come in innerduct as part of the assembly.

Are they gopher rated cables being pulled in? Gopher rated means shielding against burrowing critters. Makes them harder to pull, but may increase allowed pulling tensions.

Is conduit sizing based on future pulls possible/likely?
Do the specs, manufacturer, or EIA/TIA allow soap? Soap is another name for a lubricant that eases pulling of cable.

For pulling refer also to BICSI ITSIM, Ch. 4, "Pulling Cable."

I am sorry that my memory is not as good as it used to be, years ago I helped with some revisions to the EIA/TIA documents, but I have forgotten more than I have ever learned.

Shnae

Re: Underground Conduit Handholes [Re: cgw] #210943 08/27/13 12:23 PM
Joined: Dec 2002
Posts: 317
S
sabrown Offline
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I can't even remember how to spell my name.

Shane


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