Are you located in the United States?

Would you prefer to navigate to our United States website?

Confined Spaces Installation

For installations in occupied commercial and residential structures – or in passenger rail tunnels, pedestrian tunnels – there is a stringent requirement for duct and fiber cable products to be manufactured using plenum or Low Smoke Zero Halogen (LSZH) rated materials.

Applications
Conduit installation in confined spaces
INSTALLING LSZH IN TUNNEL APPLICATIONS

Use the proper pulling hardware and do not exceed the maximum tensile pull rating of the ducts. Use swivels – attached to each duct and, the lead pull line – and wire rope slings (bridle) for maximum pulling clearance in the conduit and reduce twisting of the ducts. When placing different size ducts simultaneously, the pull tension maximum is limited to the duct with lowest published pull tension maximum. Note that when air jetting in cables, LSZH duct products may have lower than normal jetting pressure maximums due to the nature of the LSZH material.

PLACING OF PLENUM MICRODUCT UNDER RAISED FLOORING

When placing Plenum in raised-floor environments, to reduce undulations, it is critical to provide frequent support for the bundle or bundles. 12-way and smaller bundles need supports approximately every three feet, larger bundles about every four feet.

Note that Plenum 8.5/6mm MicroDucts have a slightly larger ID, thus requiring the use of airtight end caps versus tapered plugs for both inside and outside plant (ISP and OSP) applications.

Conduit installation in confined spaces
Want a better connection with Dura-Line?

Ask a question or email us a comment! We're happy to supply additional information and explore how we can be of service to you.

Contact Us

Want a better connection with Dura-Line?

Ask a question or email us a comment! We're happy to supply additional information and explore how we can be of service to you.

Contact Us