Exhibit A. NWCPUD Fiber Optic Construction Standards~2.pdf
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- OSP Construction Services
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- S-R33123-00015131
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- Wasco County, Oregon
About this file
This document is the Fiber Optic Construction Standards for the Northern Wasco County People's Utility District (PUD), effective September 18, 2025. The comprehensive manual provides detailed technical specifications and installation guidelines for fiber optic cable infrastructure, covering aerial and underground service drop installations, mounting techniques, clearance requirements, and construction practices. The standards outline precise requirements for equipment, materials, and installation methods for fiber optic network deployment, including specifications for tangent supports, dead-end assemblies, cable attachments, grounding, and network interface device (NID) installations.
The document includes extensive technical drawings and diagrams detailing specific installation techniques, material requirements, and compliance standards for fiber optic cable construction. It provides guidance on critical aspects such as minimum clearance requirements, cable routing, grounding procedures, and installation protocols for both new construction and existing premises. The standards address various installation scenarios, including aerial and underground service drops, and provide detailed instructions for network interface device placement, grounding methods, and cable splicing techniques. The manual serves as a comprehensive technical reference for contractors, engineers, and technicians involved in fiber optic network infrastructure development for the Northern Wasco County PUD.
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Text version
FIBER OPTIC CONSTRUCTION STANDARDS
Effective: September 18, 2025
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Table of Contents
FIBER OPTIC CONSTRUCTION STANDARDS
ADSS Tangent Support
ADSS Support Clamp
Fiber Optic Suspension Unit – Support Mounted
Fiber Optic Suspension Mounted
12” Extension Bracket for Fiber Attachment Hardware
ADSS Fiber Optic Dead-End Limited Tension
ADSS Fiber Optic Dead-End Medium Tension
ADSS Fiber Optic Double Dead-End Limited Tension
ADSS Double Dead-End Medium Tension
ADSS Fiber Optic Cable Single Dead-End
ADSS Fiber Optic Cable Installation Double Dead-End 0 to 90 Degrees
ADSS No Splice Storage Loop
ADSS Storage Loop Dead-End Cable Assembly
Fiber Optic Cable In-Span Storage Assembly
ADSS Pole Mount Vertical Storage Loop
Fiber Optic Cable w/Messenger Tangent Connection
ADSS Fiber Optic Cable Support Clamp on Fiberglass Stand-Off Bracket
Fiber Optic Cable w/Messenger Clamp on Fiberglass Stand-Off Bracket
Tangent Assembly, Series 1000 60” PUPI SPX
6,000# Messenger Single Dead-End
6,000# Messenger Double Dead-End
Fiber Optic Cable 6,000# Guy
Fiber Optic Cable 6,000# Span Guy
Plate Anchor Assembly
Plate Anchor Installation
Helix/Screw-In Anchors
Fiber Optic Cable Conduit Riser
Underground Fiber Optic Installation Vault Installation Guidelines
Underground Fiber Optic Installation 30” x 48” x 36” Fiberglass Handhole
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Underground Fiber Optic Installation 17” x 30” x 24” Fiberglass Handhole
Trench & Conduit Installation Guidelines (1 of 2)
Trench & Conduit Installation Guidelines (2 of 2)
Air Flow Spoiler
Spiral Vibration Dampener
Splicing and Splice Case Placement (1 of 2)
Splicing and Splice Case Placement (2 of 2)
Typical Splice Case Used on Fiber Systems (1 of 2)
Typical Splice Case Used on Fiber Systems (2 of 2)
Typical Installation from OH Splice Case to OH Entry into Premise
Typical Installation from OH Splice to Premise via Riser and UG Conduit
Joint Use Clearance Street Light Exceptions
Joint Use Vertical Clearance Requirements
Joint Use Vertical Clearance at Pole Requirements
Joint Use Vertical Midspan Clearance Requirements
Joint Use Grounding & Bonding
Joint Use New Riser Installation
Joint Use Climbing Space
APPENDIX A – SUPPLEMENTAL RUS SPECIFICATION DRAWINGS
RUS Drawing #241
RUS Drawing #214
RUS Drawing #242
RUS Drawing #203
RUS Drawing #211
RUS Drawing #PM12
RUS Drawing #PM2A
FIBER SERVICE DROP INSTALLATION SPECIFICATION DRAWINGS
Aerial Service Drop Installation
Underground Service Drop Installation Existing Residence/Premise
Underground Service Drop Installation New Construction
NID Installation and Grounding
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Bill of Materials REF# USE Description
1 1 Support Unit (for ADSS Fiber DIA 0.526” 0.575”) 2 1 Bolt, Double Arming 5/8” x 16” 3 2 Washer, Square Galvanized, 2” x 2” x 3/16” 4 2 5/8” Galvanized Nut
ADSS Tangent Support
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1 1 Fiber Dielectric Support 0.65 2 1 Bolt, Double Arming 5/8” x 14” 3 2 Washer, Curved, 2 1/4" x 3/16”, 11/16” Hole
ADSS Support Clamp
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1 1 Support Mounted Suspension Unit with Armor 2 1 Bolt, Double Arming 5/8” x 16” 3 2 Washer, Square Galvanized, 2” x 2” x 3/16”
Fiber Optic Suspension Unit – Support Mounted
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1 1 Fiber Aluminum Support Clamp 2 1 Bolt, Double Arming 5/8” x 16” 3 2 Washer, Square Galvanized, 2” x 2” x 3/16” 4 2 5/8” Galvanized Nut 5 1 5/8” Eye Nut 6 1 1/2” Anchor Shackel
Fiber Optic Suspension Mounted
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1 1 12” Extension Bracket 2 1 Bolt, Double Arming 5/8” x 16” 3 2 Washer, Square Galvanized, 2” x 2” x 3/16”
12” Extension Bracket for Fiber Attachment Hardware
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1 1 Formed Wire DE (For ADSS Fiber DIA 0.513 0.577”) with Thimble Clevis, 14” Ext Link and 5/8” Eye Nut
2 1 Bolt, Double Arming 5/8” x 16” 3 2 Washer, Square Galvanized, 2” x 2” x 3/16”
5 1 Cable Abrasion Protector
ADSS Fiber Optic Dead-End Limited Tension
MAXIMUN INITIAL TENSION = 1000LBS
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1 1 Formed Wire DE (For ADSS Fiber DIA 0.543 0.577”) with Thimble Clevis, 14” Ext Link and 5/8” Eye Nut
2 1 Bolt, Double Arming 5/8” x 16” 3 2 Washer, Square Galvanized, 2” x 2” x 3/16”
ADSS Fiber Optic Dead-End Medium Tension
MAXIMUN INITIAL TENSION = 2000LBS
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1 2 Formed Wire DE (For ADSS Fiber DIA 0.543 0.577”) with Thimble Clevis, 14” Ext Link and 5/8” Eye Nut
2 1 Bolt, Double Arming 5/8” x 16” 3 2 Washer, Square Galvanized, 2” x 2” x 3/16”
ADSS Fiber Optic Double Dead-End Limited Tension
MAXIMUN INITIAL TENSION = 1000LBS
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1 2 Formed Wire DE (For ADSS Fiber DIA 0.543 0.577”) with Thimble Clevis, 14” Ext Link and 5/8” Eye Nut
2 1 Bolt, Double Arming 5/8” x 16” 3 2 Washer, Square Galvanized, 2” x 2” x 3/16”
MAXIMUN INITIAL TENSION = 2000LBS
ADSS Double Dead-End Medium Tension
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1 1 Bolt, Mach, 5/8” x 12” 2 1 Washer, SP Lock Galvanized, 5/8” 3 2 Curved, 2 1/4” x 3/16”, 11/16” Hole 4 1 Nuts TE 5/8” 5 1 Fiber Dead-End ADSS 0.6555 Dia
ADSS Fiber Optic Cable Single Dead-End
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1 2 Bolt, Mach, 5/8” x 12” 2 2 Washer, SP Lock Galvanized, 5/8” 3 2 Nuts Palnut Lock 5/8” 4 2 Curved, 2 1/4” x 3/16”, 11/16” Hole 5 2 Fiber Dead-End ADSS 0.6555 DIA 6 1 Fiber, Down-Lead Cushion, 0.535
Check utility pole owner requirements for minimum separation between drilled holes.
ADSS Fiber Optic Cable Installation Double Dead-End 0 to 90 Degrees
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1 1 In-Span Storage System for ADSS (Cable Size 0.510”-0.575”) Complete with 2 Storage Racks (Horseshoes), Armor Rods, Cable Protection Bracket, and Misc Hardware
2 25 8” Cable Ties
ADSS No Splice Storage Loop
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1 2 Bolt, Mach, 5/8” x 12” 2 2 Fiber Dead-End ADSS 0.655 Dia 3 2 Washer, SP Lock Galvanized, 5/8” 4 4 Curved, 3” x 3” x 1/4L 11/16” Hole 5 2 Nuts Palnut Lock 5/8” 6 1 In-Span Storage System, 0.6555
ADSS Storage Loop Dead-End Cable Assembly
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1 1 In-Span Storage System 0.650 – 0.730 Dia 2 A/R Cable Ties (Tie Wraps)
1 1 In-Span Storage System 0.510 – 0.575 Dia 2 A/R Cable Ties (Tie Wraps)
Fiber Optic Cable In-Span Storage Assembly
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1 1 Vertical Cable Storage Double Arm Complete with 2 Storage Arms with 4 Storage Spools, Cable Protection Bracket, and Misc Hardware
2 2 Machine Bolt, 5/8” x 14” 3 2 5/8” Galvanized Nut 4 4 Washer, Square Galvanized, 2” x 2” x 3/16” 5 3 Downlead Cushion with Hardware
Note: Only to be used when pole owner permission has been granted.
ADSS Pole Mount Vertical Storage Loop
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1 1 Bolt, Mach, 5/8” x 12” 2 1 Washer SP Lock Galvanized 5/8” 3 1 Curved, 2-1/4” x 3/16”, 11/16” Hole 4 1 Clamp, Messenger, Tangent Bolt, Fiber
See Rus Drawing Numbers 241 and 214 (Appendix A, Sheets 1 and 2) For Additional Construction Details and Material Requirements.
Fiber Optic Cable w/Messenger Tangent Connection
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1 1 Fiber Dielectric Support 0.65 2 1 Fiber Fiberglass Bracket (Specify Length Per Chart) 3 2 Bolt Mach 5/8” x 12” 4 2 Curved, 2-1/4” x 2-1/4” x 3/16” x 11/16” Hole 5 2 Washer SP Lock Galvanized 5/8”
ADSS Fiber Optic Cable Support Clamp on Fiberglass Stand-Off Bracket
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1 1 Clamp, Messenger, Tangent, Three Bolt, Fiber 2 1 Fiber Fiberglass Bracket 3 2 Bolt Mach 5/8” x 12” 4 2 Curved, 2 1/4” x 2 1/4” x 3/16”, 11/16” Hole 5 2 Washer SP Lock Galvanized 5/8”
Fiber Optic Cable w/Messenger Clamp on Fiberglass Stand-Off Bracket
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1 1 PUPI Fiberglass Arm, 60” 2 2 Bolt, Mach Square Head Galvanized ¾” x 14” w/ Square Nut 3 2 Washer Square Curved, ¾” HD Galvanized 3” x 3” x 1/4” 4 2 Washer Double Coil, ¾” HD Galvanized Spring Lock
Tangent Assembly, Series 1000 60”
PUPI SPX
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See Rus Drawing Number 242 (Appendix A, Sheets 3) For Additional Construction Details and Material Requirements.
6,000# Messenger Single Dead-End
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1 1 Bolt DA 5/8” x 14” 2 1 Washers, SP Lock, Galvanized 5/8” 3 2 Curved, 3” x 3” x 1/4”L x 11/16” Hole 4 2 Nuts TE 5/8” 5 1 DE Auto 6m Short Bail 6 A/R Alumoweld 6m 7 Stran
See Rus Drawing Number 203 (Appendix A, Sheets 4) For 60-90 Degree Corners and Additional Construction Details and Material Requirements.
See Rus Drawing Number 211 (Appendix A, Sheet 5) For Slack Span (False Dead-End) and Additional Construction Details and Material Requirements.
6,000# Messenger Double Dead- End
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1 1 Bolts, Mach, 5/8” x 12” 2 1 Curved, 2 1/4” x 3/16”, 11/16” Hole 3 1 Washers, SP Lock, Galvanized 5/8” 4 1 Guy Hook 5 3 DE Guy Preform 6m 6 A/R Alumoweld 6m 7 Stran 7 1 Guy Strain Insulator, 3/8” Hole, 4 1/4”L, 2 7/8” Dia 8 1 DE Auto 6M Short Bail
See Rus Drawing Number PM12 (Appendix A, Sheets 6) For Sidewalk Guy Details and Additional Construction Details and Material Requirements.
1. Only attach to existing anchors when anchor owner's permission has been granted.
2. Installation of new anchor locations shall be specified on construction prints or approved by Northern Wasco County PUD.
3. Do not attach guying to existing communication anchors.
4. Do not add auxiliary eye attachments to existing anchors.
Fiber Optic Cable 6,000# Guy
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1 1 Bolts, Mach, 5/8” x 12” 2 1 Curved, 2 1/4” x 3/16”, 11/16” Hole 3 2 Washers, SP Lock, Galvanized 5/8” 4 1 Nuts TE 5/8” 5 A/R Alumoweld, 6m, 7 Stran 6 4 DE Guy Preform 6m 7 4 Insul Strain, 504, 6m 8 1 De Auto 6M Short Bail
1. Strand attachment height on utility poles will be per construction drawings.
2. Minimum of 18’ clearance to ground is required above any traveled road surface.
3. 40” minimum clearance to any energized conductor, neutral, or as utility pole power requires on construction drawings.
4. Bond all strands to multi ground neutral provided by utility pole owner and make strand continuous between overhead guy and down guy whenever possible.
5. Tension strand per design requirements so as to not overburden existing utility company guying.
Fiber Optic Cable 6,000# Span Guy
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1 1 Anchor Rod Twin Eye 3/4” x 8” 2 1 Anchor Cross Plate Type, 16” (Includes Nut Retainer)
Plate Anchor Assembly
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Plate Anchor The Cross-Plate anchor is made for installation in holes drilled by power diggers. Because the size of the hole does not affect holding capacity, the same auger that is used to dig the pole holes on transmission projects can dig the hole. Cross-Plate anchors are installed in a diagonal bored hole, which is undercut so the anchor is at right angles to the guy. A rod trench is either cut with a trenching tool or drilled with a small power auger. Both anchor and rod trench should be refilled and tamped.
Plate Anchor Installation
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Soil Classification Data
Class Common Soil-Type Description Geological Soil Classification
Probe Values in lb. (NM)
Typical Blow Count “N” Per
ASTM-D1586
0 Sound hard rock, unweathered Granite, Basalt, Massive Limestone N/A N/A
Very dense and/or cemented sands; coarse gravel and cobbles
Caliche, (Nitrate-bearing gravel/rock)
750-1600 (85-181) 60-100+
Dense fine sands; very hard silts and clays (may be preloaded)
Basal till; boulder clay;
caliche; weathered laminated rock
600-750 (68-85) 45-60
3 Dense sands and gravel; hard silts and clays Glacial till; weathered shales, schist, gneiss, and siltstone
500-600 (56-68) 35-50
Medium dense sand and gravel; very stiff to hard silts and clays Glacial till; hardpan; marls
400-500 (45-56) 24-40
Medium dense coarse sands and sandy gravels;
stiff to very stiff silts and clays Saprolites, residual soils
300-400 (34-45) 14-25
Loose to medium dense fine to coarse sands to stiff clays and silts
Dense hydraulic fill;
compacted fill; residual soils
200-300 (23-34) 7-14
Loose fine sands; Alluvium; loess; medium – stiff and varied clays; fill
Flood plain soils; lake clays;
adobe; gumbo, fill
100-200 (11-23) 4-8
Peat, organic silts; inundated silts, fly ash very loose sands, very soft to soft clays
Miscellaneous fill, swamp marsh
Less than 100 (0-11) 0-5
1 1 Screw Anchor, 16,000lb
Class 1 Soils are difficult to probe consistently and the ASTM blow count may be of questionable value.
***It is advisable to install anchors deep enough, by the use of extensions, to penetrate a Class 5 or 6, underlying the Class 7 or 8 Soils.
Helix/Screw-In Anchor Screw-In Anchors are recommended for softer soil types, including classes 5-7 in the soil classification data chart. They do not work well in rocky soils. Screw-In Anchors are usually installed by a power drive machine. Screw-In Anchors can also be used in applications where an anchor will be embedded in concrete.
Helix/Screw-In Anchors
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1 2 Screws, Lag, 1/2” x 4” 2 1 Bracket, Conduit Standoff, 8 1/2” 3 1 PVC Bell End, Size per Conduit 4 1 Conduit Clamp, Standoff Bracket, Size per Conduit 5 A/R PVC Conduit- Size per construction print
Fiber Optic Cable Conduit Riser
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1. HandHoles or Vaults are never to be placed in vehicle driving surfaces. Shall be rated for H22 loading, occasional vehicle traffic only.
2. All ducts entering or exiting vault will be plugged with compression-type plugs, simplex JM types, or roam seal cables in ducts.
3. Shall be to be placed flush with ground surface, never to cause a trip hazard.
4. Shall be be placed on 5/8” minus gravel or washed pea gravel leveled and compacted to support placement, minimum of 4: of gravel inside vault. Wire mesh material is required to cover the entire bottom of the vault for rodent protection. Wire mesh will be placed under gravel.
5. All innerduct will be extended directly into vaults for fiber pulling purposes. Innerduct will be HDPE PVC, SRD 9 or 11 orange, smooth outside, longitude ribbed inside. Duct will never extend more than 6: inside vault wall. Entrance hole through side of vault will be drilled or pressed.
6. Conduit shall be schedule 40 orange. Conduits can enter through the bottom of the vault, into a 90-degree fashion, placed in the corners of the vaults.
7. Place fiber cable per manufacturer’s specifications, never pulled or tensioned more than 600 (MRCL) cable load pounds, bend radius of fiber shall be no less than 18”. Tag cables per owner specifications.
8. Racking of fiber coil and splice case is always required. Utilize uni-strut racking and cable shoes.
Secure splice case with tie wraps.
9. Secure lid with provided lock-down bolts.
10. All large vaults require a ground rod and marker sign. Ground rod 5/8” x 8’ copper clad and #6 uncoated solid soft drawn copper.
Storage and Racking
Marker Placement
Underground Fiber Optic Installation HandHole/ Vault Installation Guidelines
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1 1 Fiberglass Handhole 30” x 48” x 36”
Underground Fiber Optic Installation 30” x 48” x 36” Fiberglass Handhole
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1 1 Fiberglass Handhole 17” x 30” x 24”
Underground Fiber Optic Installation 17” x 30” x 24” Fiberglass Handhole
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Trenching and Conduit Installation Requirements:
1. All trenches shall be excavated according to the trench detail and construction design.
2. The trench shall be straight and the bottom smooth, level, and free from rocks, obstructions, and sharp objects.
3. The conduit shall never be bent or kinked, with a minimum bend radius of 26” in 90 Degrees. Conduit will be coupled to withstand 125 psi blowing pressure.
4. Orange fiber optic warning tape shall be placed at 12” above the conduit in trench and plow construction methods.
5. A minimum of one cable plow ripping pass will be made at full burial depth to ensure the conduit route is clear of obstructions. The plowing operation will be continuously observed for depth and proper feeding of conduit in plow shoot.
6. One foot of separation is required between fiber conduit and any other utilities (or per joint utility owner).
7. Minimum depth of conduit must be 42”.
8. Contractor shall call for utility locates prior to digging.
9. Depths of existing utilities will be potholed for verification of location. Conflicts with existing utilities will be resolved prior to conduit placement.
Trenching in Right of Way:
1. All State and County road crossings shall meet the installation requirements outlined in the right of way permit issued by the authority having jurisdiction and construction design.
2. An approved, licensed, and bonded excavation contractor must perform all work in the road right of way.
3. Any working the right of way must meet the erosion and sediment control requirements of the local jurisdiction.
Fiber Installation Requirements:
1. Conduit shall always be proofed for integrity prior to placement of fiber optic cable.
2. Cable will never be pulled over 600 pounds of pulling pressure or blowing pressure.
3. Avoid excessive cable twists.
4. Pulling or blowing speeds shall never exceed 150 feet per minute.
5. The use of capstan winches will be calibrated with never to exceed limits of 600lbs of force. Capstans shall be sized to meet the minimum bend radius requirements under tension.
6. Never bend over 15 x OD of cable, or a maximum bend radius of 18”.
7. Installation temperature must always stay between -22 and 140 degrees Fahrenheit.
8. Cable pulling lubricant used shall be recommended for cable pulling or blowing. Polywater, hydralube or equivalent.
Never use soaps or detergents that cause the cable sheath to breakdown.
9. Refer to design maps for splicing locations. Fiber optic cable is never to be cut except only where designed.
10. Fiber optic cable sequential numbers are required at each pole location and vault wall. Sequential numbers will identify conduit length, and slack left in vaults and at poles.
Trench & Conduit Installation Guidelines (1 of 2)
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Typical Trench/Plow Section
Trench Restoration
Trench & Conduit Installation Guidelines (2 of 2)
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1 1 Air Flow Spoiler, .564” - .76” Dia
Span Length Feet Meters Spoilers Per Span
120-180 36.6-54.9 3 181-240 55.2-73.2 4 241-300 73.5-91.4 5 301-350 91.7-106.7 6 351-400 106.9-121.9 7 401-450 122.2-137.2 8
Application: 1/4” Messenger +1 .564”-.760” Cable 5/16” Messenger +1 .373” -.565” Cable Multiple Messenger + Cable .575”-.717” Total
Air Flow Spoiler
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1 1 Fiber Vibration Dampeners, 0.655
Spiral Vibration Dampener
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Cable Preparation and Storage Requirements:
1. Prepare cables for splicing by laying out flat on ground, reducing twists and bends.
2. For an aerial splice case application, the Aerial Slack Loop will be in place prior to splice work taking place.
3. The aerial splice case shall be mounted with aerial adjustable offset brackets for ADSS or Strand and Lash applications.
4. Once splicing is completed, white cable tag to be placed on cable denoting cable direction. Tag should be no more than 12” from plate on case.
5. Tape cable tails together to form a coil that neatly combines within the vault.
6. Cable bend radius should never be less than 18”.
7. In handholes or vaults, verify conduits are plugged and visible in the bottom of the vault.
8. Bond/Ground splice case to the ground rod or cable locater marker station.
9. Tag cable with owner cable tag, visible when vault is open, at top of coil, or in a aerial application at the splice case.
10. Tag cable with owner cable tag, visible when vault is open, at top of coil, or in a aerial application at the splice case.
11. The aerial splice case shall be mounted with aerial mounting adjustable offset brackets for ADSS or strand and lash applications. Strap and tie wrap aerial ADSS cable slack. Overlash slack in a strand and application.
12. All aerial splice cases need to be re-hung and mounted into aerial application within 48 hours of splice work completion.
Fiber Splicing Requirements:
1. Cable openings shall match splice case procedures as outlined in manufacturer’s requirements.
2. Fiber splicer is required to completely read and understand procedures documented in the Coyote Products
Application Manual prior to work being performed.
3. Fiber splice will never cut a spliced fiber without checking the light activity with a calibrated light detector prior to cutting.
4. No more than 24 fibers per tray.
5. End plates are always to be arranged to allow for additional future cable access.
6. Always flash test the splice case prior to storing case in vault.
Splicing and Splice Case Placement (1 of 2)
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Fiber Splicing Documents and Methods of Procedure Notifications:
1. Anytime a splicer is to access an active splice case, place a new splice case on existing lit backbone or lateral fiber, or work requiring splicing fibers in an active panel, a Method of Procedure (MOP) is needed, except for in the case of an outage.
2. A MOP is not needed for OTDR testing or splicing on dark fiber.
3. A MOP will be provided by Northern Wasco County PUD (NWCPUD) and will be sent to the Network Operations Center (NOC), contractor, and splicer a minimum of 10 business days prior to scheduled work. MOP window will be between 1AM and 5AM.
4. In certain instances, a MOP can be scheduled prior to the 10 day window for emergency needs and fiber repair work. It will be handled on a case-by-case basis depending on necessity of work and what fibers are on existing backbone. MOP will list a description of work, splice cases to be entered, or locations of installation of new splice cases. MOP will also provide a list of active customers on cables being worked on.
5. MOP will list NWCPUD Engineer Contact information as well as NOC contact information.
6. NWCPUD will provide Splicing Documents (Splice Docs) prior to work taking place. Splice Docs will provide splice locations, fiber splicing assignments, and distances to Cabinet, COLO or other end site location if not splicing back to a NWCPUD Cabinet or COLO.
7. Fiber splicer is to always test for light prior to cutting. If light is found on fiber assignments, fiber splicer is to contact NWCPUD Engineer before proceeding further.
8. If discrepancies are found regarding distances provided, or large fiber events/breaks on either existing backbone or newly installed fiber, fiber splicer.
Fiber Testing and Documentation:
1. Fiber splicer is to notify NOC prior to splice work is to begin, and prior to access to any NWCPUD facilities, whether splicing or testing is to take place.
2. Fiber splicer must follow MOP instructions provided. Fiber splicer is to notify NOC and close out ticket once splice work has been completed.
3. Prior to splicing fiber, strands provided on splice docs must be tested on existing fiber and new fiber install to verify distances and any potential breaks or large loss events (greater than a 0.3DB loss and/or high reflection event in case of jumpers placed).
As noted previously, if any issues arise NWCPUD Engineers need to be notified of issue immediately.
4. Once splicing is complete bi-directional OTDR reports will be required in both 1310nm and 1550nm. OTDR should run for a minimum of 1 minute, and for up to 3 minutes on longer distance reports. On these occasions splicer will be notified of the necessary run times on long distances prior to work taking place.
5. NWCPUD will provide splicer with building contact information for customer site. NWCPUD will provide access information for splicer to enter NWCPUD facilities for testing.
6. All OTDR traces need to be delivered in raw format within 48 hours of splice work completion.
Acceptance of OTDR Testing and Splice Completion:
1. No fiber strand will be accepted that has an individual splice location event greater than 0.3dB (TIA Standard). This only pertains to strands spliced during work window, excludes existing network splices.
2. In certain instances, depending on job and contract for work, the individual splice event standards may be more strict. In these instances NWCPUD will notify splicer prior to work taking place.
3. Fiber splice locations with reflections are not acceptable and will be rejected. This does not include connectors used during testing, jumpers at panels, or patch panel ports.
4. When testing with OTDR; fiber optic jumpers and ports to be cleaned every time both prior to OTDR testing and after testing has completed. Port caps always need to be replaced on unused ports after testing has completed. NWCPUD may require individual splice locations to be re-spliced to meet standards listed. If this was a new splice, the cost to fix the splice issue that does not meet standards outlined will not be re-imbursed by NWCPUD.
5. If splicer does not follow MOP, testing requirements, or bi-directional testing, NWCPUD will not re-imburse cost to fix splice issue that arise from not following procedures correctly.
6. Splicer and/or contractor to provide pictures of fiber install on customer premises. Either picture of fiber coiled on backboard if no panel is installed, or picture of mounted term panel after fiber has been spliced and tested. Pictures need to be delivered to NWCPUD within 24 hours of being taken.
Splicing and Splice Case Placement (2 of 2)
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Typical Splice Case Used on Fiber Systems (1 of 2)
Typical Splice Case Used on Fiber Systems (2 of 2)
Typical Installation from OH Splice Case to OH Entry into Premise
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Example of Overhead Splice
1. Fiber service drop must maintain a 12’ minimum clearance above grade at lowest point.
2. Fiber service drop must not attach to electric service weather head.
3. Details shown are minimum requirements per National Electric Safety Code.
Typical Installation from OH Splice to Premise via Riser and UG Conduit
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Commercial/Business Service
OH Splice to Premise via Riser
Fiber into Premise from UG Conduit
Joint Use Clearance Street Light Exceptions
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Drip loop must be covered by a suitable nonmetallic covering that extends 2” beyond the loop.
Joint Use Vertical Clearance Requirements
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Clearance to Supply Neutral in the Common Position
Joint Use Vertical Clearance at Pole
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Minimum Clearance 40 inches
Minimum Clearance 40 inches
Minimum Clearance 40 inches
Clearance to Secondary Conductor in the Common Position
Clearance to Power Riser Termination (Top of the Conduit)
Joint Use Vertical Midspan Clearance
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Joint Use Grounding & Bonding
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See Rus Drawing Number PM2A (Appendix A, Sheets X) For Additional Construction Details and Material Requirements.
Joint Use New Riser Installation
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New risers shall be attached to existing power standoff brackets when available.
Joint Use Climbing Space
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Preferred Climbing Space Crossarm Climbing Space
Acceptable Climbing Space Brackets Climbing Space
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APPENDIX A – SUPPLEMENTAL RUS SPECIFICATION
DRAWINGS
RUS Drawing #241
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RUS Drawing #214
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RUS Drawing #242
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RUS Drawing #203
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RUS Drawing #211
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RUS Drawing #PM12
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RUS Drawing #PM2A
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FIBER SERVICE DROP INSTALLATION SPECIFICATION
DRAWINGS
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*Additional City and County Minimum Clearance Requirements may Apply.
Required Material Item Description
1 Network Interface Device (NID, ONT Housing) 2 3MM Flat Drop Fiber Optic Cable 3 House Attachment 4 Wedge Clamp 5 Cable Clips National Electric Code Minimum Clearance Requirements
Communication Service Drop to Electric Service Wire in Span 12” Clearance Over Driveways, Areas Subject to Truck Traffic 15’ – 6” Clearance Over City and County Roads* 15’ – 6” Clearance Over Washington State Highways – Joint Use with Electric 20’ Clearance Over Washington State Highways – Communications Only 24’ Clearance over Pedestrian Traffic Only 12’ Minimum Clearance Lowest Electric to Communications at Pole 40” Electric Service Drops to Communication Service Drops at Midspan 12” Vertical Spacing from Comm to Comm at Pole 12”
Aerial Service Drop Installation General Requirements for Aerial Fiber Service Drop Installation
1. Fiber service drop must maintain minimum clearances above grade at lowest point. Refer to the chart on this page for requirements.
2. Fiber service drop must not attach to electric service weatherhead.
3. Sag from point of origin at pole to attachment on house shall be (1% of length of drop) whenever possible while meeting NESC minimum clearances.
4. Space cable clips approximately 3' apart or as required to securely fasten fiber to side of home, NEVER USE STAPLES.
5. While securing cable to building, follow the architectural details of the building, running down corners and across at beams and seems of siding.
6. Bend diameters of fiber drop shall not exceed manufacturers recommendation for bend radius.
7. Locate ONT housing a minimum of 12" from electric meter base and 3' - 6' above ground level.
8. When an additional pole or service pole is utilized to route the drop, install an identification tag on service drop fiber at each pole(s)., Ensure that the fiber service drop meets NESC minimum clearances to electric and other communication lines.
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General Requirements for Underground Fiber Installation
1. Conduit route from the point of connection to building should follow the most direct path available.
2. Locate NID/ONT housing a minimum of 12” from electric meter base and 3’ – 6’ above ground level.
Required Material Item Description
1 Outdoor Optical Network Terminal (ONT) Housing 2 Cable Clips 3 18/14 3/4” Locatable Microduct, with Pull String 4 3MM Flat Drop Fiber Optic Cable 5 Fiber Handhole “Flowerpot”
Underground Service Drop Installation Existing Residence/Premise
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Underground Service Drop Installation New Construction
General Requirements for Fiber Conduit Installation (New Construction)
1. The conduit route from the point of connection to your home should be straight as possible.
2. Trenching, conduit installation, backfilling and restoration on your property shall be completed by you or your contractor.
3. All residential fiber service conduit shall be grey 1" schedule 40 PVC.
4. All conduit sweeps shall be Schedule 40 PVC 36" minimum radius
5. The customer will be required to repair or replace any conduit that installers are unable to pull fiber in in due to improper installation, damaged or otherwise defective.
6. All conduit sections must be bonded with cement/glue and a pull string installed through the length of the conduit.
Customer Provided Items
1. Trench, backfill, and restoration.
2. 1” Schedule 40 PVC Conduit
3. 1” Schedule 40 36’ -90̊ sweeps (Qty as Req’d)
4. Pull String
1” fiber service conduit will terminate at either a fiber optic vault or at a utility pole
Joint Trench Secondary Voltage Electric Cable and Fiber Cross Section
*Refer to utility owners electric trench details for electric service conduit installation requirements.
Riser Installation Notes
1. If riser brackets exist on pole, stub up conduit at existing brackets.
2. If riser brackets do not exist, verify proper quadrant for conduit placement with Engineering.
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NID Installation and Grounding
Network Interface Device (NID) Installation Follow manufacturers installation instructions in addition to these requirements:
1. Install NID 3’ – 6’ above ground and a minimum of 12” from electric service meter and electric service conduit(s).
2. Install grounding for NID as shown below.
3. Splice drop fiber in NID and test light level.
Acceptable light level range is -7 to -27db.
4. Write light level test result and OFDC port number legibly on inside of NID door with permanent marker.
Grounding of ONT Closure Use a #12 coated ground wire from grounding clamp in closure and connect to one of the following locations (listed in order of preference)
1. Power Service Ground: Use split bolt to connect ground wire to existing service ground.
2. Ground Rod Clamp: Use 5/8” ground rod clamp to connect ground wire to existing or new ground rod.
3. Overhead Service Entrance Mast: Use a 12: galvanized bonding strap, strap ground wire to mast.
| FIBER OPTIC CONSTRUCTION STANDARDS |
| ADSS Tangent Support |
| ADSS Support Clamp |
| Fiber Optic Suspension Unit – Support Mounted |
| Fiber Optic Suspension Mounted |
| 12” Extension Bracket for Fiber Attachment Hardware |
| ADSS Fiber Optic Dead-End Limited Tension |
| ADSS Fiber Optic Dead-End Medium Tension |
| ADSS Fiber Optic Double Dead-End Limited Tension |
| ADSS Double Dead-End Medium Tension |
| ADSS Fiber Optic Cable Single Dead-End |
| ADSS Fiber Optic Cable Installation Double Dead-End 0 to 90 Degrees |
| ADSS No Splice Storage Loop |
| ADSS Storage Loop Dead-End Cable Assembly |
| Fiber Optic Cable In-Span Storage Assembly |
| ADSS Pole Mount Vertical Storage Loop |
| Fiber Optic Cable w/Messenger Tangent Connection |
| ADSS Fiber Optic Cable Support Clamp on Fiberglass Stand-Off Bracket |
| Fiber Optic Cable w/Messenger Clamp on Fiberglass Stand-Off Bracket |
| Tangent Assembly, Series 1000 60” PUPI SPX |
| 6,000# Messenger Single Dead-End |
| 6,000# Messenger Double Dead-End |
| Fiber Optic Cable 6,000# Guy |
| Fiber Optic Cable 6,000# Span Guy |
| Plate Anchor Assembly |
| Plate Anchor Installation |
| Helix/Screw-In Anchors |
| Fiber Optic Cable Conduit Riser |
| Underground Fiber Optic Installation HandHole/ Vault Installation Guidelines |
| Underground Fiber Optic Installation 30” x 48” x 36” Fiberglass Handhole |
| Underground Fiber Optic Installation 17” x 30” x 24” Fiberglass Handhole |
| Trench & Conduit Installation Guidelines (1 of 2) |
| Trench & Conduit Installation Guidelines (2 of 2) |
| Air Flow Spoiler |
| Spiral Vibration Dampener |
| Splicing and Splice Case Placement (1 of 2) |
| Splicing and Splice Case Placement (2 of 2) |
| Typical Splice Case Used on Fiber Systems (1 of 2) |
| Typical Splice Case Used on Fiber Systems (2 of 2) |
| Typical Installation from OH Splice Case to OH Entry into Premise |
| Typical Installation from OH Splice to Premise via Riser and UG Conduit |
| Joint Use Clearance Street Light Exceptions |
| Joint Use Vertical Clearance Requirements |
| Joint Use Vertical Clearance at Pole Requirements |
| Joint Use Vertical Midspan Clearance Requirements |
| Joint Use Grounding & Bonding |
| Joint Use New Riser Installation |
| Joint Use Climbing Space |
| APPENDIX A – SUPPLEMENTAL RUS SPECIFICATION DRAWINGS |
| RUS Drawing #241 |
| RUS Drawing #214 |
| RUS Drawing #242 |
| RUS Drawing #203 |
| RUS Drawing #211 |
| RUS Drawing #PM12 |
| RUS Drawing #PM2A |
| FIBER SERVICE DROP INSTALLATION SPECIFICATION DRAWINGS |
| Aerial Service Drop Installation |
| Underground Service Drop Installation Existing Residence/Premise |
| Underground Service Drop Installation New Construction |
| NID Installation and Grounding |
File details come from the government source that posted it. Updated .