Belowground Pipeline Networks for Utility Cables (Asce by Lawrence M. Slavin

By Lawrence M. Slavin

This guide presents a normal evaluate of equipment utilized in putting software cables belowground, together with formal underground conduit structures and comparatively inexpensive direct-buried amenities - with an emphasis on cost-effectiveness and house potency. "ASCE handbook of perform for Belowground Pipeline Networks for software Cables" describes previous practices, in addition to newer options during which person pipes or ducts will be advantageously deployed along with direct-buried cables. comparable layout, development, and operational specifications and instructions are supplied all through this ebook, in addition to analyses of themes together with: underground conduit platforms, direct-buried platforms, cable deploy tools in duct, hybrid belowground cable networks, prestige of lower than flooring Cable Networks. This ebook presents either introductory and particular layout and building details to aid the implementation of the proposed hybrid belowground cable community. it will likely be invaluable to new and skilled engineers in street and group building, software vendors, and contractors.

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Figure 3-11. Chute Plowing (Courtesy of Ditch Witch). reel if necessary, placement distances with chute plowing are essentially unlimited. Depending on the size of the tractor and plow blade, it is also possible to place one or more flexible ducts using this technique, which can be used to contain the cable(s). Figure 3-11 shows a typical cable chuteplowing operation, with the cable continuously fed off a reel, mounted at the front of the tractor unit, into the plow chute blade at the rear. , hundreds of feet).

Minimum round opening or º a 26 × 22-in. minimum rectangular opening. • Access openings must be free of protrusions that may injure personnel or prevent rapid egress. • When practical, openings should be located º outside of the paved roadway or highway, º outside of street intersections and crosswalks, and º not directly above cable or equipment locations. • Covers should º contain identification of ownership or the type of utility and º be designed or restrained so that they 24 BELOWGROUND PIPELINE NETWORKS FOR UTILITY CABLES are not easily removable without proper tools, cannot fall into the manhole, and ٗ do not contact cable or equipment.

Although it is possible to use the pull-plow operation to directly tow in the service wire behind the bullet of the plow blade without the use of duct, this procedure is not recommended. Depending on the length of the installation and the nature of the soil conditions surrounding the created cavity, the pull blade may place excessive tension on the cable or result in damage to the sheath. Such vulnerabilities would be aggravated by the dynamic impact loads resulting from the vibratory blade action.

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