New Build Handbook - Virgin Media
Online Version 1.63December 2019Bringingto your New DevelopmentNew Build HandbookTechnical Information to support our network build on your site.This guide is intended to support your on site teams in the deployment of our minimum requirements for civilsinfrastructure and wiring required in each property. All information within this guide is supplied for informationpurposes only and does not constitute a change in terms of your agreed contract with Virgin Media.This is a living document and if printed then all information should be treated as subject to change. If you are unsureof any aspect of this document then please refer to your Virgin Media site contact in the first instance for support.Stay in touch, upload your new site requests and find our latest technical documentation at www.virginmedia.com/developerRegional sitecontact details.Guidance on our site feasibilitydrawings, materials provided andminimum build requirements.How to install on site civilsitems, such as duct andinspection chambers.Internal wiring guidesfor all build types.Fire stopping, duct sealingand CPR (LSZH) guidance.Advice on using media plates andEuro Modules inside your properties.Members of.Details on ourdistribution cabinetsand what they look like.
This guide is intended to support both your planning and delivery functions with technicalinformation on our network build. If you have any queries about deployment of Virgin Medianetwork on your site then please contact your local New Build Officer.Contents:3 – New Build Site Drawing Guidelines4 – New Build Best Practice Guidelines5 – Chamber Sizes and Approved Lids6 – Preformed vs Brick Chamber Construction7 – Monobox Chamber Assembly8 – Modula Chamber Assembly9 – Fortress Chamber Assembly10 – Ultima Chamber Assembly11 – Brick Built Chambers12 – Residential Termination Box13 – Virgin Media Streetworks Requirements14 – Typical Layout of Duct in Trenches15 – HFC Distribution Cabinets16 – FTTP Distribution Cabinets17 – Why are Street Cabinets Required?18 – New Build Civils Duct Items19 – Pre Wire to Individual Points20 – Pre Wire to an Internal Termination Box21 – Media Plate Deployment22 – Face Plates and Euro Modules23 – In Home Distribution Systems (Single Source/Zone)24 – Individual MDU Pre Wire25 – Large MDU Pre Wire26 – MDU Wall Boxes27 – HFC and FTTP Comparison28 – Pre Wire for FTTP29 – FTTP Blown Fibre on a New Build site30 – CPR Guidelines for Cabling (LSZH)31 – Fire Stopping Guidelines32 – Duct Sealing Guidelines33 – Build to Rent Solutions34 – The Effect of Faster Broadband on New Homes35 – Customer Premised Equipment36 – Business Products for Home Builders37 – New Build Contacts – North Northern Ireland38 – New Build Contacts – Central South West39 – New Build Contacts – South East/Central LondonColour Key:ChambersDuct and Street CabinetsPre Wiring GuidanceUser Guides and InformationRegional ContactsUnderstand the Jargon.CPR – Construction Products RegulationHFC – Hybrid Fibre CoaxialFTTP – Fibre To The PropertyLSZH – Low Smoke Zero HalogenMDU – Multiple Dwelling Unit 2020 Virgin Media Ltd. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system ortransmitted in any form or by any means (Electronic, Mechanical, Photocopying, Recording or otherwise) without the prior writtenexpressed consent of the company. All logos and references to other brands are copyright of their respective companies.
Off Site (Virgin Media) WorksOn Site (Developers) WorksRF Cable Schematics/Blown Fibre ScheduleWorks to be completed by Virgin Mediawill be highlighted in red and willencompass all works external to adevelopers site allowing the Virgin Medianetwork to reach the development.On Site works to be completed bydeveloper will be highlighted in blueto show the variation to VirginMedia works. This includes on sitechamber construction as part ofcabinet deployment.Your site contact will confirm the requiredbuild schedule of on site cabinets in a pre startmeeting, this will help us work with you toplan activation for the site and ensure that allcustomers can get service in a timely manner.3Drawing Symbols2WChamber DimensionsDuct ArrangementsFootway/Carriageway ChamberDesignation of chamber to be specifiedas per Virgin Media standards. Worksfor developer will be highlighted blueand works for Virgin Media contractorwill be red.Duct routes are all shown as a singleline, the number of ducts in the routewill be signified by a way count forexample a 2 way duct is signified as 2Wbut will still show as a single line. For fulldetails on duct arrangements please seedrawing VMTD0017d.Direction of sweepDistribution and Nodal CabinetsSwept Tee (Lateral Connection)Tee’s will be shown “sweeping” inthe direction of the servingdistribution cabinet as shown inthe examples above.FW2 – 730 x 460 x 465FW3 – 750 x 600 x 600FW4 – 915 x 445 x 600FW6 – 1310 x 610 x 750FW10 – 2320 x 740 x 750CW1 – 600 x 600 x 900CW2 – 1200 x 675 x 900CW3 – 1800 x 675 x 900Cabinets are highlighted as an invertedtriangle. If a chamber is required for thecabinet build then this will behighlighted at the base of the cabinet inred to determine Virgin Mediacontractor works.Cabinet BoundariesApprox. brick built chamber dimensions. L x W x D.Dimensions correct as of April 2019, all dimensions inmillimetres. For full details on individual chamberspecifications please refer to the individual drawingsuitable for the chamber size you require in theDevelopers Guide. Please note that pre fabricatedchamber opening sizes will vary but will still workwith the matching sized frame/cover.Site layouts will identify the propertiesserved from each cabinet with a dotted linesegregating each area. Please bear this inmind when planning the build route anddeployment of duct on your site. Ensurecabinet locations are accessible and agreedin advance with your site contact.VMTD0001Version 1.4 Revised 19/11/2019Created By Stephen ScottAuthorised by Statutory and StandardsDrawing owned and maintained by Virgin Media TechnicalDrawings. For any queries or feedback please contact TechnicalDrawings@virginmedia.co.ukNew Build Site Drawing Guidelines 2 020 Virgin Media Ltd. All rights reserved . N o part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or byany means (Electronic, Mechanical, P hotocopying, Recording or otherwise) without the prior written expressed consent of the Company.
Site SecurityPlease ensure yourcompound is secure, cabledrums left out in the openwill attract metal thieves.On Site Materials StoragePlease keep all duct items stored in a secure areato prevent damage/theft. Virgin Media suppliesmaterials free issue but if replacements arerequired we may levy a charge.Internal SocketsSingle gang back boxes to be utilised at alltimes for all points. Wiring to be left with150mm tails and all internal Coaxial cable runsto be secured with suitable cable clips or ties.Please ensure and blown fibre tubing issecured with the supplied Velcro straps only.4 Wiring and Draw RopeEnsure any external wiring is kept tidy until second fix, draw ropes to be tied offand secured until finish of ground level duct and final cable pull is complete.Avoid the use of Siamese cable to multiple points in a property as it causesexcess cable and is more difficult to tidy. Duct FormationDo not mix and match our duct with anotheroperator (Openreach duct on VM and vice versa).Our site liaison will work with your teams toensure you have enough material to completeany duct routes required by us on site.External PresentationAt second fix, Omni boxes must be fitted to tidy external cable looms.Termination boxes to be fitted over duct ends and levelled with the ground. Ifconsideration is given at first fix to ingress points for ourselves and otheroperators then you can achieve a tidy external finish. If possible, have yourtelecoms ingress point to the side of your property rather than the front toreduce the impact of external boxes. Remember the minimum distance betweencore locations should be 350mm.Please also ensure that correct chamber lids areused for each operator. Its worth noting thatOpenreach frame and covers are lockable ourcovers do not fit so please ensure the correctframes are used in all instances.VMTD0001aVersion 1.3 Revised 19/11/2019Created By Stephen ScottAuthorised by Statutory and StandardsDrawing owned and maintained by Virgin Media TechnicalDrawings. For any queries or feedback please contact TechnicalDrawings@virginmedia.co.ukNew Build Best Practice Guidelines 2 020 Virgin Media Ltd. All rights reserved . N o part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or byany means (Electronic, Mechanical, P hotocopying, Recording or otherwise) without the prior written expressed consent of the Company.
AX-S RecessedFW3Recessed covers are tested (unfilled) to theB125 load classification and can be filled withany material to suit the surrounding area.FW4AX-S Concrete InfillFW3AX-S Concrete Infillraising frame,recommended for usewith the MonoboxChamber AssemblyFW45Silent Knight and Inter-Ax2 Ductile IronSkid resistant D400 class/Group 4 carriageway frame andcovers. Suitable for use in carriageway environments only.CW1Cubis AX-S Concrete Infill covers are the sole approved footwaycover used by Virgin Media.AX-S Concrete Infill covers are rated to B125 load classification andmeets the requirements of BS EN124: 1994 (B125). All concrete infilllids are slip resistant and have no inherent scrap value.In line with industry specification, individualAX-S recessed covers will not weigh morethan 78Kg even when filled. This is to allow asingle person to lift out the cover using thelift and slide design.CW2Please discuss your chamber requirements with your local Virgin Media site contact before site works begin.Standard chamber lids can be sourced quickly but there may be a lead time on specialist covers/recessed covers.VMTD0008Version 1.2 Revised 19/11/2019Created By Stephen ScottAuthorised by Statutory and StandardsDrawing owned and maintained by Virgin Media TechnicalDrawings. For any queries or feedback please contact TechnicalDrawings@virginmedia.co.ukChamber Sizes and Approved Lids 2 020 Virgin Media Ltd. All rights reserved . N o part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or byany means (Electronic, Mechanical, P hotocopying, Recording or otherwise) without the prior written expressed consent of the Company.
Brick built footway and carriageway chambers (single and double skin) have long been the norm on new build sites, most developers seethem as the easy option as its “how its always been done”. Working alongside our partner, Cubis, we want to promote the benefits ofswitching your on site access chamber builds to a pre-formed or modular solution using the Cubis range of access chambers.Notes FW4 Box – Brick Built – Based on 2 Chambers per day.Cubis Fortress Box – Based on VM specification.Concrete Floor - 16 based on 80 per cubic meter.Bricks - 50 based on 300 per K (approx. 150 bricks per box).Mortar - 20 estimate.Machine Time - 15 based on 30ph for forklift.Mixer/Fuel/Misc - 15 estimate.Labour - 150 based on 20hr bricklayer and 10hr labourer over 10hr shift.Concrete Floor - 16 based on 80 per cubic meter.Chamber Sections - 160 based on 40x4 for 600 depth box.Labour - 33 based on 2 labourers at 10hr.Machine Time - 10 Provision of type 1 for floor. Total Cost - 219 approx. per box. Total Cost - 266 approx. per box.Advantages 6Virgin Media do not supply pre formed chamber rings/sections asstandard. If you require to purchase these items then please confirmstock availability with your local trade counter. If you requirematerials direct from Cubis then please contact your local VirginMedia site contact who can get you in touch with your regional Cubis representative. Virgin Media can supply these items with our on sitematerials deliveries but this must be agreed in advance of anycontract being agreed for the site. This is not a standard item and isprovided as an additional cost service if required.Although we promote the deployment of pre formed solutions, westill support the deployment of brick built chambers. Our site liaisonengineers can support whatever your build type is on site.If the ground type determines a concrete pre formed chamber thenyour Virgin Media liaison engineer will make sure that site is aware ofrequirements and specifications as per the Virgin Media specification.The figures used in this example are based on industry wide costsamples from October 2017. This will be reviewed regularly to makesure this stays relevant to the current construction climate.A similar example has been worked for the FW6 brick (400 brickcount) and a Cubis Ultima chamber build with costs of 374 perchamber for both examples. The main difference being brickchambers are estimated on a 2 per day build while the pre-formedchamber is calculated on a 6 per day build schedule. In all exampleslooked at, pre formed worked out slightly cheaper but the largestbenefits come from labour saved, reduction in build and deploy timeand number of chambers built per day.Pre formed chambers (when type 1 backfilled) can be moved and reutilised unlike a brick chamber which would have to be demolishedand rebuilt.Speed of build (Approx. 1 hour per chamber, reduced to 30 minutesIssues without backfill or excavation times added (reliant upon cured Wastage of brick/mortar.concrete base). Speed of build. Reduction of wet trades (less and lower skilled man power required). Cannot backfill for 2-5 days until mortar has set. Manual handling issues removed - Removes repetitive movementsassociated with brick building. Cannot cut duct entries until cured. Backfilled instantly so no edge protection required. Labour intensive to drill and fix cable management to chamber walls. Simple Duct entry cutting. Manual handling of bricks and mortar. Cable management easy and fast. Quality of finish/snagging required, additional costs to rebuild if Not weather dependant.required.As long as duct entry holes are core drilled as per the manufacturers Edge protection issues until backfilled.specification, then a chamber can easily be dis-assembled and moved ratherYour local Virgin Media site contact can get you in Machine resource required for loading out of materials.than destroying the unit. As only type 1 backfill is required, if a chamber istouch with your local Cubis representative who can Weather dependant.required to be repositioned then it can be hand dug and replaced withwork with you on site to make sure you have theminimal effort compared to rebuilding a 150 brick chamber.correct materials for your project.VMTD0013Version 1.3 Revised 19/11/2019Created By Stephen ScottAuthorised by Statutory and StandardsDrawing owned and maintained by Virgin Media TechnicalDrawings. For any queries or feedback please contact TechnicalDrawings@virginmedia.co.ukPreformed vs Brick Chamber Construction 2 020 Virgin Media Ltd. All righ ts reserved . N o part of this pu blication may be reproduced, stored in a retrieval system or transmitted in any form or byany means (Electronic, Mechanical, P hotocopying, Recording or otherwise) without the prior written expressed consent of the Company.
FW2 MonoboxRiser frame issuggested for usewith this chamberassembly.Wearing CourseBase CourseBedding andHaunching MixType 1 or leanmix concretebackfill in layers.50350-10050-100FW2 Monobox1037Duct ends to be finished no morethan 50mm inside chamberFloat finished concrete floorat base of chamber.1. All dimensions in millimetres unless otherwise stated.2. Reinstatement to comply with the requirements of the NRSWA (subject tocategory).3. All duct ends to be finished with a bell mouth where possible or finished 50mmfrom edge of interior wall.4. The maximum number of duct entries into any single wall is 2. no.5. All materials and workmanship to be in accordance with the specification.6. Virgin Media supplied Cubis Footway covers and frames to be class B125 toBSEN124. A separate riser frame is suggested for this setup and should be utilised.7. Concrete base and surround (if required) to be low water/cement ratio (low slump)Grade C40/20 for non aggressive soil conditions, for other soil conditions see Eurocode2 part 1 sections 3 and 6 recommendations and obtain Virgin Media Delivery Engineersapproval prior to construction. The mix design shall take full account of groundsulphate content conditions and comply with table 6.1 of Eurocode 2.8. Concrete base slab to be placed, tamped and surface finished. Cubis pre formedchamber to be installed and levelled to suit before any cuts are made in the assembly.9. Duct entries vary in number, grouping and orientation. Duct entry positions shouldbe agreed with the Virgin Media Build Engineer prior to construction.10. Draw lines shall be secured inside chambers by tying off to a suitable fixture or bytying to an approved batten.11. Backfill to be type 1 as standard and compacted in layers (or lean mix concretesurround if poor soil conditions).12. Chamber frame and cover to be bedded with haunching mix (wet) or epoxy resin ifrequired.7Monobox Chamber Dimensions707FW1 – 550 x 315 x 433 Inside, 832 x 592 x 433 OutsideFW2 – 730 x 460 x 503 Inside, 1037 x 707 x 503 OutsideMaximum duct arrangement of 2Wper face in no more than 2 faces perbox. The FW2 size chamber is onlydesigned for turning cables andshould more than one direction berequired then at least an FW3 orFW4 chamber should be utilised.Duct entry holes in Monobox assembliesmust be core drilled. Cubis recommend aBi-Metal hole saw be used with a slowspeed high torque drill.Please Note – Ducts should never enterthrough the bottom lip of the chamber asstructural integrity will be comprimised.For the Monobox assembly, all core cuts must be at least 50mmfrom the base of the unit to maintain structural integrity.50 Min. Duct core hole spacingshould be no more than 50% ofthe largest duct size i.e. 50mmfor a 100mm duct utilised.VMTD0004Version 1.2 Revised 19/11/2019Created By Stephen ScottAuthorised by Statutory and StandardsDrawing owned and maintained by Virgin Media TechnicalDrawings. For any queries or feedback please contact TechnicalDrawings@virginmedia.co.ukVirgin Media approved andsupplied concrete inset chamberlid to B125 for either FW1 or FW2assembly. Cubis recommends theuse of the Riser Frame unit withthis assembly.Monobox Chamber Assembly 2 020 Virgin Media Ltd. All rights reserved . N o part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or byany means (Electronic, Mechanical, P hotocopying, Recording or otherwise) without the prior written expressed consent of the Company.
Wearing CourseFW3 AssemblyFW3 AssemblyBase CourseBedding andHaunching Mix676Type 1 BackfillFW3 Assembly100Min.SumpVirgin Media approved andsupplied chamber lid toB125 for Footwayapplications and D400 forcarriageway applications.Float finished concrete floorat base of chamber.844Wearing CourseCW1 Assembly8101Base Course69450 min.Modula Chamber DimensionsBedding andHaunching MixFW3 – 750 x 600 x 600 Inside, 844 x 694 x 676 OutsideCW1 – 600 x 600 x 900 Inside, 694 x 694 x 940 Outside200mm concretesurround (minimum)940Sump to be located offcentre with fall to gratingin base of chamber1. All dimensions in millimetres unless otherwise stated.2. Reinstatement to comply with the requirements of the NRSWA(subject to category).3. All duct ends to be finished with a bell mouth where possible orfinished 50mm from edge of interior wall.4. All materials and workmanship to be in accordance with thespecification.5. Virgin Media supplied Cubis Footway covers and frames are classB125 to BSEN124 and Saint Gobain carriageway are class D400.6. Concrete base (for carriageway chambers) and surround to be lowwater/cement ratio(low slump) Grade C40/20 for non aggressive soilconditions, for other soil conditions see Eurocode 2 part 1 sections 3and 6 recommendations and obtain Virgin Media Delivery Engineersapproval prior to construction. The mix design shall take full account ofground sulphate content conditions and comply with table 6.1 ofEurocode 2.7. Concrete base slab to be placed, tamped and surface finished. Cubischamber rings to be installed and levelled to suit.8. Duct entries vary in number, grouping and orientation. Duct entrypositions should be agreed with the Virgin Media Build Engineer priorto construction.9. Draw lines shall be secured inside chambers by tying off to a suitablefixture or by tying to an approved batten.10. Standard backfill requirements for an FW3 chamber shall be type 1in all circumstances unless further support is required then concretebackfill is recommended. CW1 standard backfill shall be a concretesurround when used in a D400 category situation.11. For full build guidelines please refer to the Cubis Installation guidefound on their website.CW1 AssemblyDucts must not enterwithin 50mm of a cornersection.50 min.Duct entry holes in Modula assemblies must be core drilled.Cubis recommend a Bi-Metal hole saw be used with a slowspeed high torque drill.Please Note – Ducts should never enter through the bottomsection or the top 2 sections without prior approval fromyour Virgin Media site contact.694For the Modulaassembly, all corelocations must belocated in the centreof any given ring tomaintain structuralintegrity of theframe.200Min.VMTD0005Version 1.2 Revised 19/11/2019Created By Stephen ScottAuthorised by Statutory and StandardsDrawing owned and maintained by Virgin Media TechnicalDrawings. For any queries or feedback please contact TechnicalDrawings@virginmedia.co.uk694Modula Chamber Assembly 2 020 Virgin Media Ltd. All rights reserved . N o part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or byany means (Electronic, Mechanical, P hotocopying, Recording or otherwise) without the prior written expressed consent of the Company.
575Wearing CourseFW4 AssemblyBase CourseBedding andHaunching MixPlease Note - Duct entry holes inFortress assemblies must be coredrilled. Cubis recommend a BiMetal hole saw be used with a slowspeed high torque drill.Type 1 Backfill to suitsurrounding environment672Fortress Chamber DimensionsFW4 – 915 x 445 x 672 Inside, 1023 x 575 x 672 Outside100 Min.Virgin Media approved andsupplied chamber lid to B125 forFootway applications and D400for carriageway applications.SumpFloat finished concrete floorat base of chamber.91023For the Fortress assembly,all core locations must belocated as close to thecentre of any given ring tomaintain structuralintegrity of the frame.Sump575Maximum duct arrangement of4w per wall in this assembly,any greater number of ductswill require a larger chamber.50 min.Ducts must not enter within50mm of a corner section.VMTD0006Version 1.3 Revised 19/11/2019Created By Stephen ScottAuthorised by Statutory and StandardsDrawing owned and maintained by Virgin Media TechnicalDrawings. For any queries or feedback please contact TechnicalDrawings@virginmedia.co.uk1. All dimensions in millimetres unless otherwise stated.2. Reinstatement to comply with the requirements of the NRSWA(subject to category).3. All duct ends to be finished with a bell mouth where possible orfinished 50mm from edge of interior wall.4. All materials and workmanship to be in accordance with thespecification.5. Virgin Media supplied Cubis Footway covers and frames are classB125 to BSEN124 and Saint Gobain carriageway are class D400.6. Concrete base and surround to be low water/cement ratio(lowslump) Grade C40/20 for non aggressive soil conditions, for other soilconditions see Eurocode 2 part 1 sections 3 and 6 recommendationsand obtain Virgin Media Delivery Engineers approval prior toconstruction. The mix design shall take full account of ground sulphatecontent conditions and comply with table 6.1 of Eurocode 2.7. Concrete base slab to be placed, tamped and surface finished. Cubischamber rings to be installed and levelled to suit.8. Duct entries vary in number, grouping and orientation. Duct entrypositions should be agreed with the Virgin Media Build Engineer priorto construction.9. Draw lines shall be secured inside chambers by tying off to a suitablefixture or by tying to an approved batten.10. Standard backfill requirements shall be type 1 in all circumstancesunless further support is required then concrete backfill isrecommended. For CW class chambers in a D400 category setting thenconcrete backfill is required.11. For full build guidelines please refer to the Cubis Installation guidefound on their website.Fortress Chamber Assembly 2 020 Virgin Media Ltd. All rights reserved . N o part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or byany means (Electronic, Mechanical, P hotocopying, Recording or otherwise) without the prior written expressed consent of the Company.
FW6/10 AssemblyFW6 AssemblyWearing CourseBase CourseBedding andHaunching Mix806-9101310-2320100Min.Virgin Media approved andsupplied chamber lid toB125 for Footwayapplications and D400 forcarriageway applications.Float finished concrete floorat base of chamber.CW2/3 Assembly10Ducts must not enter within50mm of a corner section.Sump900-91050 min.610740Sump200Min.1310-2320Ultima Chamber DimensionsFW6 – 1310 x 610 x 806 Inside, 1408 x 708 x 806 OutsideFW10 - 2320 x 740 x 812 Inside, 2446 x 866 x 812 OutsideCW2 – 1200 x 675 x 900 Inside, 1326 x 801 x 900 OutsideCW3 – 1800 x 675 x 910 Inside, 1926 x 801 x 910 Outside1200-1800FW6 AssemblyPlease Note - Duct entry holes inUltima assemblies must be coredrilled. Cubis recommend a BiMetal hole saw be used with aslow speed high torque drill.For the Ultima assembly, all core locations must be located as close to thecentre of any given ring to maintain structural integrity of the frame.VMTD0007Version 1.2 Revised 19/11/2019Created By Stephen ScottAuthorised by Statutory and StandardsDrawing owned and maintained by Virgin Media TechnicalDrawings. For any queries or feedback please contact TechnicalDrawings@virginmedia.co.uk1. All dimensions in millimetres unless otherwise stated.2. Reinstatement to comply with the requirements of the NRSWA(subject to category).3. All duct ends to be finished with a bell mouth where possible orfinished 50mm from edge of interior wall.4. All materials and workmanship to be in accordance with thespecification.5. Virgin Media supplied Cubis Footway covers and frames are class B125to BSEN124 and Saint Gobain carriageway are class D400.6. Concrete base and surround to be low water/cement ratio(low slump)Grade C40/20 for non aggressive soil conditions, for other soil conditionssee Eurocode 2 part 1 sections 3 and 6 recommendations and obtainVirgin Media Delivery Engineers approval prior to construction. The mixdesign shall take full account of ground sulphate content conditions andcomply with table 6.1 of Eurocode 2.7. Concrete base slab to be placed, tamped and surface finished. Cubischamber rings to be installed and levelled to suit.8. Duct entries vary in number, grouping and orientation. Duct entrypositions should be agreed with the Virgin Media Build Engineer prior toconstruction.9. Draw lines shall be secured inside chambers by tying off to a suitablefixture or by tying to an approved batten.10. Standard backfill requirements shall be type 1 in all circumstancesunless further support is required then concrete backfill isrecommended. For CW class chambers in a D400 category setting thenconcrete backfill is required.11. For full build guidelines please refer to the Cubis Installation guidefound on their website.Ultima Chamber Assembly 2 020 Virgin Media Ltd. All rights reserved . N o part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or byany means (Electronic, Mechanical, P hotocopying, Recording or otherwise) without the prior written expressed consent of the Company.
Plan ViewBWall openings to be arranged onsite and confirmed by the VirginMedia Engineer.AIsometricVirgin Media approvedand supplied concreteinset chamber lid andframe.ASumpB11Section B:B250 Minfor allchambersizesGalvanised step irons to be fitted in allfootway boxes deeper than 700mm.Position on the end remote from anyside entry duct or as directed by theVirgin Media Delivery Engineer, andaway from the sump.Opening to suitchamber size (see list)25mm Ductseparationon all faces.150mm Concrete base.Grade C20/40 with A393mesh.Class 1 mortar to beused in English orrunning bond for bothsingle and double skinbuilds.Section A:A225 Double Skin,102.5 Single Skin225 Double Skin,102.5 Single Skin254x254mmGalvanisedSteel sumpgrating.100 Min forall chambersizesChamber Openings and Build TypesFW2 – 730 x 460 x 465 - Single SkinFW3 – 750 x 600 x 600 - Single SkinFW4 – 915 x 445 x 600 - Single SkinFW6 – 1310 x 610 x 750 - Double SkinFW10 – 2320 x 740 x 750 - Double SkinCW1 – 600 x 600 x 900 - Double SkinCW2 – 1200 x 675 x 900 - Double SkinCW3 – 1800 x 675 x 900 - Double SkinOpening to suitchamber size (see list)Epoxy Resin orHaunching Mix (set20mm Min) belowfinished level for allchamber sizesMinimum depth 25mmcement sand screed(1:3) with fall to grating.1. All dimensions in millimetres unless otherwise stated.2. All concrete to be BS8110 (EN1992) grade C20/40.3. Concrete to be fully compacted.4. Trim ducts flush with inside face of wall.5. Cover and frame approved for B125 duty in FootwayScenarios and D400 in Carriageway.6. Frame to have bolting lugs and be bolted down on beddingwith cover in place, to ensure there is no rocking.7. Capped lead outs to be provided as directed by the VirginMedia Delivery Engineer.8. Chamber depth to be increased with 450 cover at roadcrossings and decreased for 1 no. duct layer.9. Bri
36 – Business Products for Home Builders 37 – New Build Contacts – North Northern Ireland 38 – New Build Contacts – Central South West 39 – New Build Contacts – South East/Central London This guide
Guard; U.S. Virgin Islands Department of Planning and Natural Resources; British Virgin Islands Conservation and Fisheries Department; and United States Department of the Interior. Publication_Date: 200108 Title: U.S. Virgin Islands and British Virgin Islands ESI: HYDRO (Hydrology) Edition: First Geospatial_Data_Presentation_Form: Atlas
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Virgin Islands Board of Education Regular Meeting Minutes – March 12, 2021 I. Call to Order The regular meeting of the 20th Virgin Islands Board of Education was called to order at 5:36 p.m.St. Croix by Chair Kyza Callwood. II. Roll Call The following were pr
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