RMP Underground Conduit System Installation Guide (Procedure 242)

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ProcedureSweep too close to the pole.7 Equipment Bases – General InformationFigure 6.6.3 - Riser Too Close to Pole7.1 Site SelectionThe site shall be inspected prior to selecting the equipment base or determining theinstallation details. The job sketch and associated documents should clearly identifyeach equipment base and location. The Power Company is responsible to design thejob and determine the location of the equipment; however, input from the customer isvaluable. Customer input will be reviewed and, if possible, incorporated into thedesign prior to the final design. The following items should be included in theinspection and accounted for in the job design:• Soil class. Soil stability shall be determined and recommendations made onshoring or sloping requirements.• Water table. Precautions should be taken to prevent any flooding affectingcustomer-owned equipment in adjacent structures or properties.• Frost considerations: Consideration shall be given to local ground and frostconditions such that the installation remains structurally sound.• Final grade. If the final grade has not yet been established, measures shall bemade to allow for anticipated grade changes. Where radical changes in gradeare anticipated, installation should be delayed until near-final grade has beenachieved.J:\Publications\FPP\DIS\PRO\242-RMP Underground Conduit Systems.docx R6, 5/13/14This document is posted online at rockymountainpower.net, and at engineering’s intranet site for distribution procedures.Modification of this document must be authorized by PacifiCorp engineering publications, (503) 813-5293. 30
• Site accessibility. The site location for any pad box or vault should be within 15feet of gravel or paved surfaces. Future access requirements for operation andmaintenance of equipment shall be considered when determining equipmentlocation.7.2 Site PreparationExcavations should be no deeper than necessary to install conduit and set theequipment base. Disturbed soil beneath any type of equipment base shall becompacted in six-inch lifts, and leveled to within a 2% slope prior to setting or pouringat the site.The customer shall supply:• a six inch deep base of 3/4-inch-minus gravel compacted to 90% of dry densityunder padvaults,• when required by the Power Company a six-inch base of 3/4-inch-minus gravelcompacted to 90% of dry density under padboxes and secondary boxes, and• an 18-inch deep base of compacted 3/4-inch-minus gravel compacted to 90% ofdry density under flat pads.In marshy areas, where an adequate foundation cannot be created through normalmethods, pilings may be required.7.3 Height above Final GradeEquipment bases should be set such that approximately 3” will be above the finalgrade in non-pedestrian areas, and set flush with the final grade in pedestrian areas.7.4 In Residential SubdivisionsPadboxes and secondary boxes in subdivisions should typically be set 24” behindthe sidewalk and near the property line.Procedure24” to Sidewalk EdgeFigure 7.4 – Positioning of a Pad BoxJ:\Publications\FPP\DIS\PRO\242-RMP Underground Conduit Systems.docx R6, 5/13/14This document is posted online at rockymountainpower.net, and at engineering’s intranet site for distribution procedures.Modification of this document must be authorized by PacifiCorp engineering publications, (503) 813-5293. 31
Page 3: ProcedureUnderground Conduit System
Page 7 and 8: Figure 6.5.2 - Joint Use Separation
Page 9 and 10: Underground Conduit Systemsfor Prim
Page 12 and 13: Any conduit system or any part of a
Page 14 and 15: ProcedureFiberglass conduit and swe
Page 16 and 17: 2.2.7 Conduit ProofingAll undergrou
Page 18 and 19: The following list of requirements
Page 20 and 21: ProcedureFigure 2.3.6.1 - Joint Use
Page 22: A padvault is a two-part concrete b
Page 25 and 26: 3.4 Secondary BoxesSecondary boxes,
Page 27 and 28: ProcedureFigure 4.2 - Clearances be
Page 29 and 30: Company is required to return to th
Page 31 and 32: 6 Installation Guidelines - Conduit
Page 33 and 34: 6.3 Installing Conduit through Pave
Page 35 and 36: 6.5 Joint Use SeparationFor joint u
Page 37: 6.6 Transition from Overhead to Und
Page 41 and 42: ProcedureFigure 7.6.1 - Barrier Pos
Page 43 and 44: 8 Three Phase Sectionalizing Cabine
Page 45 and 46: Notes:For each conduit run:•One 4
Page 47 and 48: Notes:For each conduit run:•Leave
Page 49 and 50: 9.2 Excavation - Single Phase Secti
Page 51 and 52: 3” Final Grade6-10”3 - 6”45°
Page 53: ProcedureFigure 10 - Single Phase T
Page 57 and 58: 10.4 Power Company Installs Pad Box
Page 59 and 60: 11.2 Excavation - Secondary BoxNote
Page 61 and 62: 12 Concrete Flat Pads - Customer Re
Page 63 and 64: 12.2 Excavation, Flat Pad - Three P
Page 65 and 66: ProcedureFigure 13.1 - Padvault13.2
Page 67 and 68: Pad vault must be set at proper ele
Page 69: UG CONDUIT SYSTEMS Rev. 6 May 2014E

RMP Underground Conduit System Installation Guide (Procedure 242)

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