Frequently Asked Questions & Answers of Fabric Innerduct

Frequently Asked Questions & Answers of Fabric Innerduct

Summary

Sunshine popular fabric innerduct Installation Questions

When the top two cells have cables already installed, is it harder to pull the cable into the bottom cell?
The weight of cables can be a factor in increased pulling tensions, but experience has shown this increase to be minor –less than 50lbs. A more important factor in cable pulling tensions is the condition of the conduit. Pull length, total degree/radius, and number of bends in the outer duct contribute significantly to overall pulling tensions.
Can the cables be removed without removing the Fabric innerduct Innerduct?
Yes, Fabric innerduct is designed so cables can be installed, removed, and reinstalled at any time.
Is lube required for placing Fabric innerduct?
No. Fabric innerduct is pre-lubricated and additional lubricants are not necessary.
Is lube requried for placing cable within Fabric innerduct?
 Although pre-lubed, we recommend that additional lubricant be applied to the cableduring installation. Extensive testing has shown that this step can reduce cable pulling
tensions by 15-20%.
Does Fabric innerduct have footage markers?
Fabric innerduct is incrementally marked every 5 feet. The pulling tapes within Fabric innerductare incrementally marked every foot.
Will Fabric innerduct twist or spiral during installation?
Using proper installation equipment and techniques insures Fabric innerduct will not spiral. The key component of this procedure isto use a swivel between the pull rope and the Fabric innerduct pack(s).
When installing Fabric innerduct in OSP applications, do you install from manhole to manhole or pull through multiplemanholes?
Either. Fabric innerduct is very easy to install and many customers pull MaxCell through multiple manholes in a single pull to savetime.
After Fabric innerduct has been installed, and cables have been installed, can another pack of Fabric innerduct be installed?
Yes, Fabric innerduct can be incrementally installed. One pack can be installed now and another pack installed later. This is a major benefit of Fabric innerduct. For this reason, we recommend that a spare pull rope be installed along with the Fabric innerduct pack.
Can Fabric innerduct be pulled over innerduct inside of outer duct?
When space is available, Fabric innerduct can be pulled into almost any conduit structure.
How do contaminants (e.g. mud, silt, water ) affect the ability to pull throurgh Fabric innerduct?
In conduits where contaminants may be suspected, we recommend flushing the duct with water prior to placing cableswithin Fabric innerduct. Similar to rigid innerduct, cable pulling tensions may increase due to the presence of these contaminants.
Can Fabric innerduct be spliced?
Yes. We have developed a Fabric innerductsplice solution for field repairs. We also recommend placinga handhole to allow easy return access at the repaired location.
How is the conduit containing Fabric innerduct sealed?
Standard sealing practices include infatable bags, termination plugs, and foam applications.For watertight applications, split termination plugs are recommended.For non-watertight applications, infatable bag
When the top two cells have cables already installed, is it harder to pull the cable into the bottom cell?
The weight of cables can be a factor in increased pulling tensions, but experience has shown this increase to be minor –less than 50lbs. A more important factor in cable pulling tensions is the condition of the conduit. Pull length, total degree/radius, and number of bends in the outer duct contribute significantly to overall pulling tensions.
Can the cables be removed without removing the Fabric innerduct Innerduct?
Yes, Fabric innerduct is designed so cables can be installed, removed, and reinstalled at any time.
Is lube required for placing Fabric innerduct?
No. Fabric innerduct is pre-lubricated and additional lubricants are not necessary.
Is lube requried for placing cable within Fabric innerduct?
 Although pre-lubed, we recommend that additional lubricant be applied to the cableduring installation. Extensive testing has shown that this step can reduce cable pulling
tensions by 15-20%.
Does Fabric innerduct have footage markers?
Fabric innerduct is incrementally marked every 5 feet. The pulling tapes within Fabric innerductare incrementally marked every foot.
Will Fabric innerduct twist or spiral during installation?
Using proper installation equipment and techniques insures Fabric innerduct will not spiral. The key component of this procedure isto use a swivel between the pull rope and the Fabric innerduct pack(s).
When installing Fabric innerduct in OSP applications, do you install from manhole to manhole or pull through multiplemanholes?
Either. Fabric innerduct is very easy to install and many customers pull MaxCell through multiple manholes in a single pull to savetime.
After Fabric innerduct has been installed, and cables have been installed, can another pack of Fabric innerduct be installed?
Yes, Fabric innerduct can be incrementally installed. One pack can be installed now and another pack installed later. This is a major benefit of Fabric innerduct. For this reason, we recommend that a spare pull rope be installed along with the Fabric innerduct pack.
Can Fabric innerduct be pulled over innerduct inside of outer duct?
When space is available, Fabric innerduct can be pulled into almost any conduit structure.
How do contaminants (e.g. mud, silt, water ) affect the ability to pull throurgh Fabric innerduct?
In conduits where contaminants may be suspected, we recommend flushing the duct with water prior to placing cableswithin Fabric innerduct. Similar to rigid innerduct, cable pulling tensions may increase due to the presence of these contaminants.
Can Fabric innerduct be spliced?
Yes. We have developed a Fabric innerductsplice solution for field repairs. We also recommend placinga handhole to allow easy return access at the repaired location.
How is the conduit containing Fabric innerduct sealed?
Standard sealing practices include infatable bags, termination plugs, and foam applications.For watertight applications, split termination plugs are recommended.For non-watertight applications, infatable bag termination systems are recommended. Thesebags, when infated by CO2, compress to the structure of the cable placed. This method offersa silt, water, and chemical resistant solution.
systems are recommended. Thesebags, when infated by CO2, compress to the structure of the cable placed. This method offersa silt, water, and chemical resistant solution.