ࡱ> osnwg &bjbj’’ H> j jGI I I I I ] ] ] 8  D] Je (!!!!!!ddddddd$fibdI #!!##dI I !!d6E'E'E'#^I !I !dE'#dE'E'bmY^!K#j]Vde<Jek]vk[$k^kI ^!LD"6E'z","!!!dd%`!!!Je####k!!!!!!!!!Y : SECTION 27 05 43 underground ducts and raceways FOR COMMUNICATIONS SYSTEMS GENERAL RELATED DOCUMENTS Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. Specifications throughout all Divisions of the Project Manual are directly applicable to this Section, and this Section is directly applicable to them. SUMMARY Section Includes: Specifications for underground ducts for Communications Systems. REFERENCE STANDARDS and codes Refer to Section 27 00 00. general All new facilities must have a minimum of six 4 conduits. Conduit sizing and quantities can vary and should be confirmed by the Owner. All campus building shall be connected to the nearest manhole/tunnel or new manhole/tunnel, if one is to be installed. The use of a conduit/inter-duct plug is required to prevent dirt and water to fill the conduit. Prior approval and coordination with the Owner is necessary when the work requires any modification to the existing conduit system. Repair or replacement of damaged conduit is the responsibility of the party involved in causing the damage. All damages shall be reported to the Owner immediately. To allow for future communication upgrades, including transitioning from multi-pair copper cables to optical fiber media, a specific number of conduits shall be dedicated for that purpose. And to further that effort and achieve maximum conduit utilization, those conduits shall contain textile (flexible) innerduct. PRODUCTS GENERAL All materials shall meet or exceed all applicable referenced standards, federal, state and local requirements, and conform to codes and ordinances of authorities having jurisdiction. submittals Refer to Section 27 00 00. manufacturer conduits Not specified. manufacturer Flexible innerduct Textile Innerduct MaxCell Owner approved alternate Textile innerduct Standard Outdoor Textile Innerduct: Micro (33mm), 2-inch, 3-inch and 4-inch single or multi-cell polyester/nylon textile innerduct containing 1250lb polyester flat woven pull tape. Detectable Outdoor Textile Innerduct: Micro (33mm), 2-inch, 3-inch and 4-inch single or multi-cell polyester/nylon textile innerduct containing 1250lb polyester flat woven pull tape, and a solid copper, polyvinyl color coated conductor (19AWG minimum) for tracing and rated for a minimum of 6 amps and 600 volts. Conductor shall be placed in the sidewall edge fold of the textile sleeve. Indoor Textile Innerduct (Riser-listed): Micro (33mm), 2-inch, 3-inch and 4-inch single or multi-cell nylon textile innerduct containing 1250lb polyester flat woven pull tape which meets UL2024A for flame propagation and smoke density values for general applications. Plenum-Listed Textile Innerduct: Micro (33mm), 2-inch and 3-inch single or multi-cell nylon textile innerduct containing 200lb nylon-resin flat woven pull tape which meets UL2024A for flame propagation and smoke density values for use in air handling spaces. pull tape Pull Tape: measuring and pulling tape constructed of synthetic fiber, printed with accurate sequential footage marks. Color-coded. EXECUTION INSTALLATION conduits No more than the equivalent of 180 degrees of bends is allowed in a run, including offsets without an appropriately sized pull box. A pull wire/string shall be installed and tied off in each conduit. Pull wires used outside of facilities shall be stainless steel or copper, #12 AWG or strings shall be of the Kevlar type. Pull wires/strings used inside facilities and flow ducts shall be nylon. In cases where the building has direct access to the tunnel system, i.e., a tunnel section terminates at the building, cable trays of equivalent capacity may be used in lieu of the 6 or more conduits normally required for the size and type of the building. All new construction underground conduits and ducts, rigid or PVC, added to a project shall be added in groups of 2, 4, 6, 8, 10, 12 or more. Under no circumstances are single underground conduit runs acceptable. All new construction underground conduit, duct bank shall be steel reinforced, concrete (3500 psi minimum) encased PVC. Additionally, reinforcement is to be used when crossing roadways. The minimum separation for communications ducts and power ducts in a joint trench environment is 3 (8cm) of concrete, 4 (10cm) of masonry or 12 (30cm) of well-tamped earth. All communications ducts shall also be a minimum of 234 inches from steam pipes and condensation lines of crossing perpendicular. The minimum depth for buried conduit and ducts is 30 below grade or underside of roadbed to top of duct/conduit. When communications ducts run parallel to steam lines, a minimum of a 2 separation is required to avoid conduction of heat. All other duct separations must comply with the National Electric Code. Rigid steel conduit, encased in reinforced concrete, shall be used in any location subject to abuse, such as under slabs or foundations. All underground conduits shall be 4 in diameter. All necessary precautions shall be taken by the contractor during construction to prevent the lodging of dirt, plaster or trash in all conduits, tubings, flow ducts, fittings and boxes. All conduit in floors, concrete or below grade, shall be swabbed free of debris and moisture before wires are pulled. All digging and excavation on Owners property shall be approved by the Owner. The use of HDPE (High Density Polyethylene) pipe is recommended where open trenching is not practical. A minimum of two 4 pipes will be installed if this type of construction is necessary. All sections of HDPE will be joined by elector fusion on site to create a seamless conduit install. Contractors will swab conduits, once the end-to-end enclosures are in place. Contractor will install a pull tape in each installed conduit. textile innerduct type to be used Aboveground, Exterior and Interior Conduit Installations: Outdoor textile innerduct (Standard or Detectable as desired) Interior Exposed Locations: Non-plenum Areas: Indoor textile innerduct Plenum Areas: Plenum-listed indoor innerduct When installed in 4 conduit, use two 3 3-Cell packs with an additional pull tape on the outside for future pulls in each conduit. Cable Tray: use standard outdoor or indoor textile innerduct Installation flexible innerduct Provide textile innerduct in conduit and wire ways, and place textile innerduct within and under cable trays using continuous unspliced lengths of textile innerduct between maintenance holes, pull boxes, and/or termination points as indicated on the drawings. Provide suitable textile innerduct slack in the maintenance holes, hand holes, pull boxes, and at turns to ensure there is no kinking or binding of the product. Textile Innerduct Mountings, Hangers and Attachments: Design & install hangers and other similar fittings adequate to support loads and to not damage innerduct. Do not fasten textile innerduct to steam, water, or other piping, ductwork, mechanical equipment, electrical equipment, electrical raceways, or wires When appropriate, use the following cable ties to secure textile innerduct through previously created incisions: Plenum areas: plenum-rated plastic or stainless steel Non plenum areas: Conventional flame-retardant nylon ties Underground locations: Conventional plastic cable ties END OF SECTION 27 05 43   MD ANDERSON Project No. XX-XXXXMD ANDERSON Project NameA/E NameIssue DescriptionA/E Project No.Month, 00, 0000 911- ÿճԹ鱨վ MD Anderson Cancer Center underground ducts and raceways FOR COMMUNICATIONS systems 27 05 43 MS0250520 PAGE 1 of  NUMPAGES 1 ELMUg   , - . / 0 1 2 9 :  % & /07BJctu*JTjCP h/vF h =; h=h = h =h = hEyh =h%h h9h = hh =hzh =MMUg  2 :  0Bgdg `gdggdggdgBJcu*JTj)w)gdggdg `gdg  `gdjxh `gd/vFog )w)t~rj !!l"""""" # ####$$I$J$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$h*jh*Uhu h>Sh = h =\ h =;h =hzUrj !l"" ##$J$$$$$$$$$$$$gd gdggdg `gdggdggdg$$$$$$$$$$$$$$$$$$$$$$$$$$$$gd $$$$$%%%%3%4%7%=%O%P%S%`%p%q%r%s%t%%%%%%%%%%%%&&&&&&&&&&&&&&&&ƾҾҾҾh4whl_amHnHujhUh^h;hukhhl_aB*ph hooh =hFh =B*phhB*phh?h =/$%3%4%=%O%P%:RkdQ$$IfTH0x$`644 HaT $$Ifa$gdGBRkd$$IfTH0x$`644 HaT $$Ifa$gdGB $IfgdFP%`%p%q%r%s%t%%%%w $$Ifa$gdW4 $IfgdW4gd gd Rkd$$IfTH0x$`644 HaT $$Ifa$gdGB $IfgdF %%%%%%&F= $IfgdW4QkdL$$IfHU0$ $ $44 HalytW4 $$Ifa$gdW4 $IfgdW4Qkd$$IfHU0$ $ $44 HalytW4&&&&&&gdggd Qkd$$IfHU0$ $ &$44 HalytW4F00P&P:psSBBP/ =!"#8$% DpO$$If!vh#v#v`:V H655`4 HTO$$If!vh#v#v`:V H655`4 HTO$$If!vh#v#v`:V H655`4 HTW$$Ifl!vh#v #v:V HU$5 54 HalytW4W$$Ifl!vh#v #v:V HU$5 54 HalytW4c$$Ifl!vh#v #v:V HU$,5 594 HalytW4,x  2 0@P`p2( 0@P`p 0@P`p 0@P`p 0@P`p 0@P`p 0@P`p8XV~ 0@ 0@ 0@ 0@ 0@ 0@ 0@ 0@ 0@ 0@ 0@ 0@ 0@ 0@66666_HmH nH sH tH J`J l_aNormal1$OJQJ\]_HmH sH tH ZZ l_a Heading 1$ <@&^ ;CJKH \^JaJ RR l_a Heading 2$ P 1$@&^  5;CJXX l_a Heading 3$ h!  1$@&^ 5;mH sH PP t Heading 4$<@&5CJOJQJaJvv } Heading 58 0x1$5$7$8$9D@&H$^`0CJOJQJ\]vv } Heading 68 0x1$5$7$8$9D@&H$^`0CJOJQJ\]jj } Heading 78 0x1$5$7$8$9D@&H$^`0\]nn } Heading 88 0x1$5$7$8$9D@&H$^`0 6\]r r } Heading 98 P0x1$5$7$8$9D@&H$^P`0 6CJ\]DA D l_aDefault Paragraph FontRi@R  Table Normal4 l4a (k (l_aNo List P+@P l_aEndnote Text,EOS$1$a$5;.. 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