CONSTRUCTION GUIDE - BGE
conduitCONSTRUCTION GUIDEFor the installation of conduit, manholes and splice boxes1
One call to Miss Utility cansave time, money and lives.Before you pick up any equipment, pick up the phone and call Miss Utility. Miss Utilitywill notify all applicable utility companies and see to it that your job site is marked for allunderground utility lines. One simple phone call can save you the time and hassle ofdealing with job site mistakes and delays. Not to mention decrease liability, prevent damage,reduce injuries and possibly save lives. After all, safety is everyone’s job.Call Miss Utility, at least 48 hours prior to work, at 811 or 800.257.7777.DIG SAFELY CHECKLIST:1 Call Miss Utility at 811 or 800.257.7777 at least 48 hours prior to work.2 Allow the required time for utilities to mark the underground lines.3 Respect and protect all marks/flags.4 Excavate with care. Take all reasonable actions to properly protect,support and backfill underground utility lines.5 Immediately notify the utility if an underground utility line is damaged.6 If damage creates an emergency, take immediate steps to safeguard life, health and property.Please check with your individual jurisdictions with regard to waiting times andspecific digging guidelines.For more information, contact Miss Utility or check online at MissUtility.net.Call before you dig, every dig.It’s the law.MISS UTILITY 811 or 800.257.77772
IntroductionThe information in this manual provides general guidelines for the installation of conduit,manholes and splice/pull boxes as it relates to BGE gas and electric service.These guidelines assist developers, general contractors, builders, architects, engineers,licensed electricians and plumbers in the engineering, planning and construction ofcommercial, industrial and residential projects.This addendum provides clear and more consistent guidelines on the requirements forconduit and manhole construction. This publication does not cover all the rules and regulationsand is to be used in conjunction with the “Commercial, Industrial and Residential CustomerInformation Booklet”. For your convenience both booklets are available online at BGE.COM.BGE’s goal is to work with you to install gas and electric service promptly and safely whilemeeting all construction codes and safety standards. Now and in the future, we’re committedto providing safe and dependable natural gas and electric service.We hope the information in this manual answers your questions and guides you throughthe process. If there’s anything we haven’t made clear, please call us at 800.233.1854.A PDF version of this manual can be found on the Service Request section ofBGE.COM/MyAccount/MyService.3
Table of Contents1. GENERAL INFORMATIONGuidelines.6Customer Responsibilities. 6-72. CONDUITSpecifications for Customer Installation. 9-11Standard Duct Bank Arrangement/Installation.11Plastic PVC Duct Spacers General Information.12Road Crossing Specifications.133-Phase Transformer Pad Dimensions Detail.141-Phase Transformer Pad Dimensions Detail.15Turning Conduit into Transformer Pads.163. SPLICE/PULL BOXESGeneral Information.18Secondary (600V) Fiberglass Splice/Pull Box.19Installation Instructions for 13 and 34 kV Boxes.20Splice/Pull Box - 13kV (#2- 1/0 cables only).21Splice/Pull Box - 13kV (#2- 500 cables only).22Splice/Pull Box - 2-sets 13kV or 1- set 34kV (#2- 750 cables). 23-244. MANHOLESGeneral Information.26Installation of Precast Concrete Manholes . 26-27Small Secondary Manhole 1 to 4 Services. 27-29Large Secondary Manhole 1 to 7 Services. 30-31Precast Concrete Line Manholes. 32-33Precast Concrete Slotted End Wall Manhole. 34-36Installation Standards. 37-43Materials Available from BGE.445. DEFINITIONS AND FREQUENTLY ASKED QUESTIONSDefinitions. 47-48Frequently Asked Questions. 48-494
generalinformation5
General InformationGuidelinesBGE’s Underground Cable SystemsBGE’S UNDERGROUND CABLE SYSTEMSARE DIVIDED INTO THREE TYPES:1. Direct-Buried:(Cables/Gas Pipe installed directly in ground, notinstalled in any type of duct or sleeve)This type of system is typically used in urbanareas where: Load density is significant. Concentration of circuits via the same routeare planned or expected. Additional circuits will be added routinely.This type of system is typically used in rural orsuburban areas where: The concentration of circuits, limited Right-ofways and an expected high number of circuitsleaving distribution or master substations. Load density is relatively light; a concentrationof cables does not exist. Ducts are stacked on top each other. Circuits are not routinely added and front lotline installations. Dirt digging with occasional paving is expected. In these areas, the design principle used is loopfeed primary and joint trenching with telephoneand gas. Sleeving (short duct lengths) may be used inadvance of paving where BGE utilities are tobe installed at a later date (i.e. road crossings,parking lots, etc.).2. Direct-Buried Conduit:(cables/gas pipe installed in PVC or flex polyethyleneduct or sleeve that is installed directly in ground)This type of system is typically used in rural orsuburban areas where special situations existsuch as: Extensive paved areas with concrete or macadamsuch as parking lots. Secondary distribution through paved, limitedaccess, congested or potentially congestedareas, thus preventing easy maintenance diggingfor repairs or replacement of the installed lines. Rocky soil conditions which could damagethe cable.NOTE: Typically used in conjunction with splice/pullboxes and not concrete manholes.63. Concrete Encased Conduit:(Cables installed in concrete encased PVC duct)NOTE: Typically used in conjunction with concretemanholes and not splice/pull boxes.NOTE: Gas sleeves will not be concrete encased.Customer ResponsibilitiesThe information provided below is an addendum forconduit and manhole construction only. Please referto the “Natural Gas and Electric Service Guide”for the comprehensive list of rules, regulationsand responsibilities.The customer is responsible for engineering,designing, permitting, purchasing and constructingall required road crossings, ducts, conduit, splice/pull boxes and manholes according to the standardsset forth in this document in order for BGE toprovide gas and electric service.Customer’s responsibility toperform the following:Pre-Construction Phase Submit BGE service application and obtainproject number (Service Request or Work Order#). Provide loads and voltage class. Provide detailed utility site plans.
1 Meet with BGE representative to discuss projectscope, schedules and next steps. Develop detailed conduit and manhole drawingsincluding profiles and duct runs.** Submit conduit and manhole drawings toBGE for review.** Submit drawings to local municipality and obtainrequired permitting. Sign and return required BGE design drawingsand contract. Provide payment to BGE for project costs. Contact inspector noted on BGE design drawingsto schedule pre-construction meeting.Construction Phase Notify BGE immediately of any changesto schedule, scope or final design. Contact BGE to schedule“Pre-pour Inspection.” ** Contact BGE to schedule “Pre-backfillInspection.” ** Contact BGE to schedule “Mandreling andStringing Inspection.” **Post Construction Phase Satisfy all municipality inspections. Call BGE to schedule and release BGE project.** When indicated on BGE drawings.NOTE: Not following specifications and standards inthis booklet may cause delays in customer projectand additional costs necessary for BGE tocomplete the job.7
conduit8
ConduitSpecifications for CustomerInstallationNOTE: Conduit from the meter termination pointto the secondary side of the transformer is thestandard method of installation for most three-phasecommercial and industrial secondary services.The direct-buried method is still a method ofinstallation where conduit installation would beimpractical. When required by BGE, the customeris responsible for designing and building ductsand conduit systems.Direct-Buried Electric ConduitPrimary and Secondary Electric Conduit1. Secondary conduit will be 4” minimum insidedimension I.P.S.2. Primary conduit size varies, contact BGErepresentative for actual sizes.3. BGE shall specify the number, size andconfiguration of ducts.4. All direct-buried ducts shall be UL schedule 40.5. All bends shall be no less than 36” in radius.A total of two (2) 90-degree bends are allowedin the conduit line (i.e., conduit turn up attransformer pad is one (1) 90-degree bend).One (1) additional, wide-radius bend (minimumradius of five feet for this additional bend) will beallowed. If this still will not be sufficient for theconduit design/construction, contact your BGErepresentative. A hand hole, splice/pull box ormanhole may be required.6. The customer shall pull a mandrel (1/2” smallerin diameter than the conduit and 6” long)through each duct prior to BGE cableinstallation, followed by a pulling line (1800 lb.minimum tensile strength mule line preferred)which shall remain in each duct.7. Customers will connect all electric conduitwith sealed/glue couplings and terminate theirconduit with bell ends and plugs.28. Electrical ducts should be sloped away from thecustomer’s building whenever possible to reducethe potential for water intrusion into the buildingas a result of failed or missing duct seals.9. Required depth of conduit from final grade totop of conduit/conduit bank: 30” for secondary, minimum 36” for primary, minimum 48” maximum10. Backfill evenly around duct with clean dry earthand mechanically tamp in 12” lifts.11. Lengths of secondary duct banks shall beminimized to limit pulling distances andelectrical losses. Any secondary duct lengthsover 100 feet shall be approved by BGE priorto construction.12. The minimum longitudinal separation betweenforeign structures and conduit should beas follows: Telephone/Cable Television Conduit–3”of concrete or 12” of earth Gas, Water, Sanitary and Oil Mains–12”of earth13. Splice/pull boxes or manholes may be requiredby BGE depending on the specific installation.14. If electric service is being supplied from a newtransformer, the customer’s duct shall enter thetransformer as shown on page titled “TurningConduit into Transformer Pads” in section two (2)of this booklet.15. If electric service is being supplied from anexisting transformer, the customer shall end thesecondary duct five feet from the secondaryside of the transformer at a location determinedby BGE. BGE will continue the duct into thetransformer based on field conditions.Direct-Buried Gas Sleeves1. PVC UL Schedule 40 conduit (solid wall, notsplit) may be used as a sleeve installed inadvance of paving to facilitate future installation9
Conduitof small size (2” and smaller) gas services wherecasing is not required. The ends of the sleeveshould not be sealed after insertion of the carrierpipe to avoid containment of gas in case of a gasleak. However, the end of the sleeve on a serviceline nearest the building should be sealed afterinstallation of the carrier pipe and the oppositeend of the sleeve left open.2. Gas services common trenched with electric ductshall be in sleeves.3. Gas sleeves shall not exceed one 45-degreebend and must terminate a minimum of 5’ fromall buildings/ structures. NOTE: 90-degree bendsare not allowed.4. Only one gas service per sleeve is permitted.5. Gas sleeves will not be concrete encased.6. Installation of gas piping into any electricalconduit bank is prohibited.7. Installation of minimum 4” sleeve andunderground warning tape unless otherwisespecified for natural gas service under paving, orunder improved areas as required by BGE or anycity or county regulations. (Applicable only forplastic gas service sizes: 1/2” CTS; 3/4” IPS; 1”CTS; 1-1/4” CTS; 1-1/4” IPS and 2” IPS.)8. Lengths of continuous runs for gas sleeves shallnot exceed 300 feet.9. Mechanical joints on gas services are notallowed inside of sleeves. Open trench spaceprovision must be made to allow BGE room tomake these connections.10. Warning tape is required above all gas sleevesand can be purchased from the BGE warehouseby calling 410.470.7813.11. PVC sleeves for gas shall be two (2) standardpipe sizes larger than the gas pipe.12. Vertical separation for gas sleeves when crossingany foreign structure is a minimum of 12”.13. Radial separation between gas sleeves andelectric cable or conduit is a minimum of 12”.10Concrete Encased Electric Conduit1. Duct banks must be concrete encased if anyducts are stacked vertically (one on top of theother). All 2x2 duct banks and greater must beconcrete encased.2. If ducts are within municipality Right-of-way,it may be required to concrete-encase. Checkwith local Department of Public Works forspecific requirements.3. BGE shall specify the number, size andconfiguration of ducts.4. Schedule 20 PVC must be used for concreteencased ducts.5. Bends shall be no less than 36” in radius. A totalof two (2) 90-degree bends are allowed in theconduit line. If this still will not be sufficient forthe conduit design/construction, contact yourBGE representative. A manhole, splice/ pull boxor hand box may be required.6. Duct spacers that maintain a 2” separationbetween ducts are required every 6 1/2 - 7’.Required depth of conduit from final grade totop of conduit/conduit bank (unless otherwiseapproved by BGE): 30” for secondary, minimum 36” for primary, minimum 48” maximum7. Only standard 2,500-psi ready-mix concrete with1/2” pea gravel will be approved for encasement.8. After concrete cures for 24 hours, backfill aroundduct bank with clean select soil and mechanicallytamp in 8” lifts.9. The customer shall pull a mandrel (1/2” smallerin diameter than the conduit and 6” long)through each duct prior to BGE cable installation,followed by a pulling line (1800 lb. mule linepreferred), which shall remain in each duct.10. Secondary customer switchgear installationsthat incorporate metering compartments thatare supplied by eight or more ducts, requirea pit to be installed under that compartment.
2The pit shall be 2’ deep and measure 1” lessthan the width and depth of the compartment.Ducts must enter the pit from the bottom, not thesides. Refer to the BGE Gas & Electric MeteringManual under the New Construction Servicessection available at BGE.COM for more details.12. If electric service is being supplied from anexisting transformer, the customer shall end thesecondary duct five feet from the secondaryside of the transformer at a location determinedby BGE. BGE will continue the duct into thetransformer based on field conditions.11. If electric service is being supplied from a newtransformer, the customer’s duct shall enter thetransformer as shown on page titled “TurningConduit into Transformer Pads” in section two (2)of this booklet.Standard Duct Bank Arrangement/Installation2W X 1H3W X 1H6"- 21"6"-29 1/2"5"- 19"5"4"-26 1/2"23 1/2"3"5"- 11 1/2"3"3"2"6"- 12 1/2"3"5"- 11 1/2"3"4"- 10 1/2"3"3"2"4"- 10 1/2"3"4W X 2H6"- 12 1/2"4"- 17"6" - 38"5" - 34"4" - 30"3W X 2H3"5"- 19"3"23 1/2"2"3"3"2"26 1/2"4"-5"- 19"6"- 21"2"5"- 19"4"-23 1/2"3"Duct SpaceTypical3"5"- 26 1/2"6"- 29 1/2"4"- 23 1/2"4"- 23 1/2"5"- 26 1/2"6"- 29 1/2"3"3"2"2"2"3"2"3"3"2"3"6"- 38"3"3"29 1/2"26 1/2"5"- 34"4"- 17"6"5"-3"5"- 19"4"- 17"4"- 30"6"- 21"2"6"- 21"3W X 3H2W X 3H3"4"- 17"3"5"- 19"6"- 21"2W X 4H3"2"4"- 17"3"3"3"3"5"-2"6"- 21"5"- 19"4"- 17"29 1/2"3"6"- 21"6"-3"4"- 17"2W X 2H11
ConduitPlastic PVC Duct Spacers General InformationGeneral InformationA. Duct spacers are used to hold PVC ducts inposition and maintain a 2” separation betweenadjacent ducts while pouring concrete.CapCapIntermediateB. There are 3 basic parts to the duct spacers—the base, intermediate, and cap. If required,there are also pads/feet that can be used with5” and 6” spacers for extra support in anunstable trench bottom.IntermediateBaseC. Standard cover for a primary conduit systemis 36” and 30” cover for a secondary conduitsystem. Both of these dimensions are measuredfrom final grade to the top of the concreteenvelope of the duct.36" cover for primaryD. Reinforcing bars are used to stabilize30" cover for secondarythe duct and spacers when theconcrete is poured. Drive #4 reinforcing36" cover for primary30" cover for secondarybars through the inside edges of theduct spacers and at least 6” intothe trench bottom.#4 Reinforcing BarsFinal Grade#4 Reinforcing BarsTrenchWallTrench Wall3"3"20' length6.5'to 7'3" Trench Wall3"Reinforcing barsdriven at least 6"into trench bottomReinforcing barsdriven at least 6"into trench bottomF. To properly support multiple ducts in a trench,the duct spacers are separated approximately6-1/2’ to 7‘ apart. Since PVC duct is manufacturedin 20’ lengths, this means there are three (3)spacers installed within one section of duct.12PadsFinal GradeTrenchWallE. The sides of the trench are used asretaining walls when the concrete is poured.The distance from the outer duct diameterto the trench wall should be 3” wide. This inturn gives the required 3” apron around thewhole duct bank.6.5'to 7'BasePads6.5'to 7'Duct Spacers
2Road Crossing SpecificationsNOTES: A minimum 12”
CONSTRUCTION GUIDE For the installation of conduit, manholes and splice boxes. 2 One call to Miss Utility can save time, money and lives. Before you pick up any equipment, pick up the phone and call Miss Utility. Miss Utility will notify all applicable utility companies and see to it that your job site is marked for all
BGE provides this manual as a briefing for the building community about installing natural gas and electric service—with guidelines important to developers, general contractors, builders, architects, engineers, and licensed electricians and plumbers. Whether you're planning new construction, increasing your energy service needs, relocating BGE
This publication is a guide to BGE's requirements but does not cover all rules and regulations. BGE Outdoor Lighting Account Representatives can answer questions and guide customers through the process. Please call BGE at 410.470.9446 (toll free 800.685.0123), or visit us online at
This guide will NOT teach you Python coding. If you want to learn Python please look for appropriate Python coding tutorials (e.g. ByteOfPython). When writing Python code for the BGE I recommend to keep the Blender Python API open as reference. You can find it at www.blender.org. Please be aware the BGE does not support the Blender API called .
2017-2018. Community. Resource. Guide. 2. 2. Community Resource Guide . This booklet has been prepared for our customers by BGE. All . Coalition to End Childhood Lead Poisoning . evenly throughout the year, so you will know what to expect each month. So
programs and fees listed in this book are those in effect at the time of printing. Please check the website for updated information. If you have questions, comments or suggestions, please write to us at: BGE Communications Department P.O. Box 1475 Baltimore, Maryland 21203-1475 bge.com . or see. page 7. for our phone numbers. The Community Resource
middleware. The Blender Game Engine (BGE) provides the tools to e ciently render the robot and envi-ronment features. BGE is part of an open-source 3D graphics tool called Blender that enjoys wide popularity and has a vibrant community of developers. Blender is available on the three major operating systems, Mi-crosoft Windows, Mac OS X, and Linux.
This assessment pack accompanies the textbook BGE S1–S3: English Second and Third Levels by Rachel Alexander, published by Hodder Gibson. The order of materials in this pack follows that of the textbook. The pack contains two different types of resource: For each chapter of the textbook
Update BGE Scheduler - www.bgesmartenergy.com , click "Partner Login" at the upper right, . home if desired, or shipped to the storage shed at 15221 Dino Drive, #2045 Burtonsville, 20866 . Ensure you have pulled up the correct customer and click the . Creating a new Customer Application in Vision 1.
