By Lawrence M. Slavin
This guide offers a basic assessment of tools utilized in putting application cables belowground, together with formal underground conduit platforms and comparatively reasonably cheap direct-buried amenities - with an emphasis on cost-effectiveness and area potency. "ASCE handbook of perform for Belowground Pipeline Networks for application Cables" describes previous practices, in addition to more moderen strategies during which person pipes or ducts might be advantageously deployed along side direct-buried cables. comparable layout, development, and operational specifications and guidance are supplied all through this booklet, besides analyses of themes together with: underground conduit structures, direct-buried platforms, cable set up tools in duct, hybrid belowground cable networks, prestige of lower than flooring Cable Networks. This ebook presents either introductory and particular layout and development details to help the implementation of the proposed hybrid belowground cable community. it will likely be worthwhile to new and skilled engineers in street and neighborhood building, application proprietors, and contractors.
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Additional info for Belowground Pipeline Networks for Utility Cables
28 BELOWGROUND PIPELINE NETWORKS FOR UTILITY CABLES • Temporary platforms must not be supported on cables. • No smoking is allowed near an open manhole. • No cover shall be placed over an entrance unless it is a minimum of 4 ft above the surface of the opening, with the exception of protective screens. • Proper housekeeping is required, including the following: º after completion of tasks, all debris must be promptly removed and º combustible material shall not be allowed to accumulate. Additional rules apply to cable installation operations, such as the following: • Pulleys and other equipment used to install a cable must not contact other (existing) cables.
Conduit Plugs (Courtesy of TVC Communications). 1). A rodder may also be useful for aiding in cleaning a duct into which debris has inﬁltrated. 3 To use and manage the operation of the manhole efﬁciently, the various utility cables that are accommodated within the structure must be properly organized. The cables include those that are terminated in splice cases or equipment, as well as those that only pass through the structure without any local 3 An auxiliary use allows a utility locator access to put a toroidal clamp around a cable for locating it between the structures.
Open-Cut Trenching (Courtesy of Ditch Witch). 5 Requirements speciﬁed in the Telcordia Blue Book—Manual of Construction Procedures may be superseded by formal joint-usage agreements between the parties sharing a common trench. However, the NESC basic safety rules may not be violated. 4). Trench conditions: º similar to NESC, but also requires absence of large rocks or damaging materials within 6 in. , innerduct), to minimize duct path undulations and curvature; and º belowground pipe recommended for cable passage beneath sidewalks, streets, or other obstacles.