technical note - · pdf file03/01/2014 · technical note project south ... drawings...

Halcrow Group Limited

A CH2M HILL COMPANY

Burderop Park Swindon Wiltshire SN4 0QD

Tel +44 (0)1793 812479 Fax +44 (0)1793 812089

www.halcrow.com

Technical note

Project South Bristol Link Date 22 April 2013

Note Utilities Report Ref CTREAB/730/HIG/TN/11

Author Emma Basketter Rev A

Reviewed Philip Paterson

1 Introduction

C2 enquiries were issued in July 2012 for the statutory undertakers in South

Bristol and North Somerset and returns were received between August and

December 2012. A schedule of interfaces stating the affected apparatus

along the South Bristol Link (SBL) was produced once a utility drawing was

complete with the latest SBL route (dated 6th March 2013). The locations of

the utilities shown are approximate as they have been translated from the

drawings provided by the utility companies to CAD by hand. The cover

depths in the schedule of interfaces have been taken from the NJUG

guidelines.

There are 5 utility drawings CTRAEB/730/HIG/130-134 to be read in

conjunction with this technical note. These are included in Appendix A.

2 Utilities identified

The following utilities have been identified as being present.

Utility Company Details

Gas Wales & West Utilities Low pressure

Electricity Western Power

Distribution

High voltage (11kV)

Low voltage

Wessex Water Sewer, Surface water and

Drain

Water

Bristol Water Water mains and Ducts

Review of Utilities

Project: South Bristol Link Author: Emma Basketter

Virgin media Fibre optic cable

BT Openreach Fibre optics un-

identifiable at C2 stage,

but may be present

BNet Fibre optic cable

Cable and Wireless Fibre optic cable

Instalcom (Global

Crossing and Fibernet)

Fibre optic cable

Telecommunications

Verizon Fibre optic cable

Further details of each utility such as plant type, size, material and depth can

be found in the schedule of interfaces, included in Appendix B.

3 Impacts

Ch. 100. Wessex Water sewer (See drawing CTRAEB/730/HIG/130)

A sewer passes beneath the line of the SBL, but given that the SBL will only

be on a shallow embankment at this location, no significant impacts are

anticipated. The depth of the sewer will need to be confirmed.

Ch. 300. Western Power timber post converting High Voltage cable

from overhead to underground (See drawing CTRAEB/730/HIG/130)

The timber post will need to be relocated as the SBL route and bridge are in

conflict with its existing location. It may be more suitable to resite to the

south so that the service cable runs under the carriageway rather than

above.

Ch. 500 to 800. Western Power Distribution HV and Bristol Water

main (See drawings CTRAEB/730/HIG/130 and 131)

The utilities will be located under the construction of the new embankment.

This will exert additional pressures over the pipe and cable and provide an

obstacle to the utility companies for access purposes.

Review of Utilities


Diversion would be costly and they would still have to pass beneath the bus

link and the industrial access as a minimum. Concrete slab protection over

the utilities or culverting may be more suitable to install in this case and this

will require further discussion with Western Power and Bristol Water.

Trading Estate Access Bristol Water main and Wessex Water surface

water drain

A Bristol Water main will run under the access road to Ashton Vale trading

estate. This area will contain an embankment, which will increase the cover

depth of the pipe. Diversion would not be suitable at this location, so

investigation to the pipes depth, and liaison with Bristol Water, is required

to establish if the pipe should be concrete slab protected. The Wessex

Water surface water drain will be protected by a new culvert construction.

Ch. 1000 and 1050-1100. Bristol Water ducts (See drawing

CTRAEB/730/HIG/131)

Shallow cuts into the ground at these locations mean that the cover depth

to the Bristol Water service will be reduced. The depths of these ducts will

need to be confirmed to establish if any remedial works are required.

Ch. 1150 to 1320. Bristol Water main and Wessex Water sewer (See

drawing CTRAEB/730/HIG/131)

An embankment through this location will add to the cover depth and exert

additional pressure over these utilities. The utilities could either be diverted

or concrete slabs could be installed over the pipes to protect them from the

embankment weight. A diversion to the east will mean that the services run

very close to Colliter’s Brook.

Ch. 1570 to 1600 Wessex Water sewer (See drawing

CTRAEB/730/HIG/131)

A foul drain crosses the SBL at which there will be a slight embankment on

one side and a retaining wall on the other. Due to the construction of the

retaining wall the pipe will require lowering or diversion. The pipe can be

protected by a concrete slab or lowered with no change to the existing

route. The pipe can also be diverted to run (East) alongside the SBL to

Ch.1700 where it can cross beneath the embankment and carriageway to re-

join the existing route. The pipe may require protective measures, such as a

Review of Utilities


concrete slab, for the SBL construction over the drain. However if diverted

it can be constructed to carriageway construction NJUG guidelines without

requiring the protective slab.

Ch. 2000 Bristol Water, BT, Cable and Wireless and Instalcom (See

drawing CTRAEB/730/HIG/132)

Utilities run along the route of the A38 in the carriageway, verge and

footway in the vicinity of the new roundabout arrangement. The water

mains and BT cables contained in the carriageway are not envisaged to be

of concern as they should exist at a safe carriageway depth, but if this is

found not to be the case, with the works that are to take place, they should

be lowered or protected by a concrete slab. The telecommunications in the

verge and footpath are likely not to be at the required minimum carriageway

construction depth so diversion of these should be considered. Due to the

nature of fibre optics and the difficulty and expense to divert or lower them,

it may be more suitable to protect these with a concrete slab.

Ch. 2820 to 3080 BT, Wales and West, Western Power, Bristol Water,

Virgin Media and B-Net (See drawing CTRAEB/730/HIG/133)

Telecoms (BT and B-Net), Gas and LV power (assumed to supply the

lighting columns) lines are contained in the existing Highridge common

verge. This strip will be located in the centre of the SBL carriageway. As

these utilities are unlikely to exist at the safe carriageway construction depth

they may require diversionary measures. These include a diversion further

into Highridge common, lowering to the advised carriageway cover depth,

or concrete slab protection.

There are also telecommunications, water and overhead power lines along

the footway of Highridge Green. The depth of the underground services

will need to be measured to determine if any diversionary measures are

required for the construction of the new footway, but utilities should exist

at a safe footway cover depth. Overhead power lines should not be of

concern.

Review of Utilities


Ch. 3080 Bristol Water, Wessex Water, Western Power, Wales and

West, BT, B-Net and Virgin Media (See drawing

CTRAEB/730/HIG/133)

The majority of the utilities are below ground in the area of King Georges

road and Highridge Green junction. It may be suitable to convert the

overhead LV and BT cables crossing the junction to an underground

service.

The pipes/cables along Highridge road should have adequate cover depths

for the pedestrian crossing construction. However, the 4 water mains on the

corner of Highridge Common will require further investigation. This corner

of Highridge Common also includes several utility service boxes, which will

also require consideration.

Ch. 3090 – 3530 Wales and West, Western Power Distribution, Wessex

Water, Bristol Water, Virgin Media, BT Openreach, B-Net and Cable

and Wireless (See drawing CTRAEB/730/HIG/133)

The majority of these utilities are below ground in the footways and verge

of King Georges road. There will be a considerable amount of construction

works along this road in widening the carriageway and installing new verge

and foot/cycle ways. The existing cover depths will determine if lowering of

the pipes/cables is required for the new construction depths.

The main concern for King Georges Road are the Bristol Water mains and

telecommunications B-Net and BT cables currently found in the existing

carriageway and verge. The Bristol Water mains running in the carriageway

will not be affected if this section of the road is resurfaced rather than full

depth construction. However the water main and telecommunication lines

in the verge, which is to become carriageway, may require lowering or

diversion further into the verge. It would be preferable to keep the existing

line of the utilities and lower to the advised carriageway cover depth.

Landscaping and installation of new trees in the verge should avoid clashing

with the utilities and follow egress guidance set by the companies.

It should be noted that the telecommunications contain fibre optic cabling,

which is difficult and expensive to divert due to the nature of the cables.

Review of Utilities


Ch. 3540 Wales and West, Bristol Water, Wessex Water, Verizon, BT,

B-Net and Western Power (See drawing CTRAEB/730/HIG/133)

The construction of the pedestrian crossing points may have an impact on

the Bristol Water mains/duct and Wessex Water sewer and surface water

drain. These services will require further consideration and discussion with

utility companies.

Ch. 3580 Wessex Water, Bristol Water and Western Power (See drawing

CTRAEB/730/HIG/134)

A Wessex Water surface water drain (Culvert) crosses the SBL and bus

stops. This will be protected by the installation of a malago structure. The

Bristol Water mains in this area may also require lowering or protection for

the carriageway construction. There are four HV cables in the area; two of

which cross under the new bus stop, and two directly beneath the

landscaping. The cables could be diverted to avoid interference. The tree

locations will be adjusted as they are currently above an existing water

storage tank.

Ch. 3550 – 4040 Wessex Water, Bristol Water and Western Power in

the reserved corridor

The utilities run along the alignment of the SBL and there is a concentrated

collection at Ch. 3880. Depths will need to be determined to fully assess

impacts. The greening along the protected corridor may interfere with HV

cables, surface water drains, mains water supply and foul drains. The

proposed positions of the trees will be considered at the next stage of

design to avoid as much as possible the utility services in this area.

Ch. 4150 Bristol Water, Wessex Water, Western Power, Wales and

West, BT and Virgin Media (See drawing CTRAEB/730/HIG/134)

These utilities are located within the existing footways of Hareclive Road. It

may be necessary to lower the services in the vicinity of the new pedestrian

crossing island.

The gas pipe crosses Hareclive Road at the junction. This may mean that

adequate carriageway cover depth has been provided. However it may also

be appropriate to consider repositioning the gas main away from the

crossing for the ease of future access for the utility company.

Review of Utilities


Hareclive road bus stops Wales and West, BT, Bristol Water, Western

Power and Virgin Media (See drawing CTRAEB/730/HIG/134)

The alterations to be made to the alignment of the existing kerb lines may

affect the utilities found in the footpaths. A Wales and West gas line runs

very close to the existing western kerb edge meaning that diversionary

measures may be required. While a Virgin Media cable and LV line are close

to the proposed kerb line on the east side. The exact locations and depths

of these utilities will need to be investigated.

Ch. 4260 – 4454 Wessex Water, Bristol Water, BT, Wales and West,

Western Power and Virgin Media (See drawing

CTRAEB/730/HIG/134)

The Wessex Water surface water drain and Western Power LV cable in the

existing grass area beside Whitchurch Road may require lowering or

diversion for the new carriageway as they are unlikely to be at carriageway

cover depth.

A BT line crosses the SBL at 2 locations, and runs in the grass area. This

may require lowering or diverting if not at carriageway cover depth where

the grass area will be new carriageway construction.

Gas and Water mains crossing the carriageway at several locations should

exist at carriageway construction and are not envisaged to be of concern.

However these services should be checked to confirm their situation.

Ch. 4260 CCTV camera (See drawing CTRAEB/730/HIG/133

A CCTV camera is located beside a lighting column (No. 10) on

Whitchurch Lane. The SBL carriageway will be in conflict with the location,

so the camera and pole will require relocation.

Wessex Water Underground water storage tanks in the reserved

corridor (See drawing CTRAEB/730/HIG/133 and 134)

There are two storage tanks within the reserved corridor which must be

avoided. The approximate position of the tank at Queens Road junction is

shown on the drawings with the exact position to be confirmed.

Review of Utilities


4 Conclusion

A review has identified the likely impacts of the South Bristol Link on the

apparatus of the various utility companies.

Further investigation, by way of C3 enquiries and possibly trial pits, will be

required to confirm the exact nature of the potential impacts. During the

next design stage more specific information will be obtained and discussed

with the utility companies to provide an agreed decision on the diversionary

measures necessary for each individual location along the SBL.

Review of Utilities


Appendix A – Utility Drawings

A CH2M HILL COMPANY

100023397

Bristol City Council and North Somerset Council


www.halcrow.com

Burderop Park, Swindon, Wiltshire, SN4 0QD

Tel +44 (0)1793 812479 Fax +44 (0)1793 812089

South Bristol Link

Utilities

Sheet 1 of 5

FOUL

SWD

DRAIN

GAS GAS

WM

WM

TEL TEL

BT

TEL TEL

TEL TEL

TEL TEL

TEL TEL

IMPORTANT WARNING: The existing utility

information shown on this drawing was

obtained from the relevant utility providers in

August-December 2012 and is shown as a

general guide only. No warranty to its

correctness is given or implied. The utility

information shown on the drawing should not

be relied upon in the event of excavations or

other works made near to the apparatus,

which may exist at various depths and may

deviate from the marked route. It should be

noted that a line shown on the plan may

indicate the presence of more than one cable,

duct or pipe. It is strongly recommended that

the Contractor seek the most up to date

services information from the utility providers

(prior to carrying out any works).

A CH2M HILL COMPANY

100023397



www.halcrow.com


Tel +44 (0)1793 812479 Fax +44 (0)1793 812089

South Bristol Link

70 80 90 10030100 20 40 50 60

SCALE 1:1250 (A1)

SCALE 1:2500 (A3)

METRES

BT

A CH2M HILL COMPANY

100023397



www.halcrow.com

Burderop Park, Swindon, Wiltshire, SN4 0QDTel +44 (0)1793 812479 Fax +44 (0)1793 812089

South Bristol Link

PLANNING APPLICATION

UtilitiesSheet 2 of 5

70 80 90 10030100 20 40 50 60

SCALE 1:1250 (A1)SCALE 1:2500 (A3)

METRES

FOUL

SWD

DRAIN

GAS GAS

WM

WM

TEL TEL

BT

TEL TEL

TEL TEL

TEL TEL

TEL TEL

IMPORTANT WARNING: The existing utilityinformation shown on this drawing wasobtained from the relevant utility providers inDecember 2012 and is shown as a generalguide only. No warranty to its correctness isgiven or implied. The utility information shownon the drawing should not be relied upon inthe event of excavations or other works madenear to the apparatus, which may exist atvarious depths and may deviate from themarked route. It should be noted that a lineshown on the plan may indicate the presenceof more than one cable, duct or pipe. It isstrongly recommended that the Contractorseek the most up to date services informationfrom the utility providers (prior to carrying outany works).

A CH2M HILL COMPANY

100023397



www.halcrow.com


Tel +44 (0)1793 812479 Fax +44 (0)1793 812089

South Bristol Link

Utilities

Sheet 3 of 5

70 80 90 10030100 20 40 50 60

SCALE 1:1250 (A1)

SCALE 1:2500 (A3)

METRES

FOUL

SWD

DRAIN

GAS GAS

WM

WM

TEL TEL

BT

TEL TEL

TEL TEL

TEL TEL

TEL TEL


















A CH2M HILL COMPANY

100023397



www.halcrow.com


Tel +44 (0)1793 812479 Fax +44 (0)1793 812089

South Bristol Link

Utilities

Sheet 4 of 5

70 80 90 10030100 20 40 50 60

SCALE 1:1250 (A1)

SCALE 1:2500 (A3)

METRES

FOUL

SWD

DRAIN

GAS GAS

WM

WM

TEL TEL

BT

TEL TEL

TEL TEL

TEL TEL

TEL TEL


















A CH2M HILL COMPANY

100023397



www.halcrow.com


Tel +44 (0)1793 812479 Fax +44 (0)1793 812089

South Bristol Link

PLANNING APPLICATION

Utilities

Sheet 5 of 5

70 80 90 10030100 20 40 50 60

SCALE 1:1250 (A1)

SCALE 1:2500 (A3)

METRES

FOUL

SWD

DRAIN

GAS GAS

WM

WM

TEL TEL

BT

TEL TEL

TEL TEL

TEL TEL

TEL TEL


















Review of Utilities


Appendix B – Schedule of Interfaces

Utility company Address Contact detailsSENT BY

(E/L)SENT DATE DATE RECEIVED

AFFECTED

(Y/N)C3 budget estimate C4 detailed estimate?

General

CorrespondenceCURRENT STATUS

checked

on CAD

y

Bristol Water Plc

Bristol Water Plc

PO Box 218

Bridgwater Rd

Bedminster Down

Bristol

BS99 7AU [email protected] E 31/07/2012 08/08/2012 Y y

Wales and West Utilities

(British Gas)

Network Records Department

Wales & West House

Spooner close

Celtic Springs

Coedkernew

Newport

NP10 8FZ L 31/07/2012 22/08/2012 Y y

Western Power Distribution

Map Response Team

Mapping Centre Western Power

Distribution

Lamby Way

Mardy Ind Est.

Rumney Cardiff

CF3 2EQ [email protected] E 31/07/2012 17/08/2012 Y y

Wessex Water plc

Developer Services

Riverside, Chilton Trinity,

Bridgewater, TA6 3JS

Tel – 01823 225225

[email protected] E 31/07/2012 31/10/2012 Y y

BT Openreach

N/A

National Notice Handling Centre on

0800 1693849

or email:

[email protected] E 31/07/2012 27/08/2012 Y y

Cable & Wireless

The Plant Enquiry Team

ATKINS (working on behalf of

Cable&Wireless Worldwide)

The Hub, 500 Park Avenue,

Almondsbury, Bristol, BS32 4RZ

Tel: +44 (0)1454 662 881

Fax: +44 (0)1454 66330 L 31/07/2012 08/08/2012 Y y

Virgin Media

NRSWA Co-ordination

Cablephone house

Small Heath Business Park

Talbot Way Small heath

Birmingham

B10 0HJ 0870 8883116 L 31/07/2012 06/09/2012 Y y

Allcom (Level 3) (Now Instalcom)

Allcom (UK) Ltd

136 Hodges Street

Wigan

WN6 7JE [email protected] E 31/07/2012 31/10/2012 Y y

MCI WorldCom Ltd

(Verizon)

Plant Protection Officer - OSP &

Infrastructure.

UK Field Operations

01293 611736

[email protected] E 31/07/2012 Y

Gas Transportation Company

Energy House

Woolpit Buisness Park

Woolpit

Bury St Edmunds

Suffolk

IP30 9UP [email protected] E 31/07/2012 02/08/2012 N

Government Pipelines and

Storage System (GPSS) http://www.linesearch.org/ E 31/07/2012 N

KCOM

(Kingston communications)

KCOM Group PLC

5th Floor

Prospect House

Prospect Street

Hull

HU2 8PU [email protected] E 31/07/2012 10/08/2012 N

Envoy Asset Management

David Farmer

NRSWA requests Dept

Ocean Park House

East Tyndall Street

Cardiff

CF24 5GT [email protected] E 31/07/2012 01/08/2012 NWe had previous response. Second C2

issued 27/09/2012

City Fibre Holdings

516 Chadwick House

Warrington Road

Birchwood Park

Warrington

WA3 6AE

0333 150 7282

Street Works Co-ordinator

[email protected] E 31/07/2012 06/08/2012 N

Allcom (Level 3) [email protected] E 31/07/2012 Now Instalcom N

Bristol University Halls Network [email protected] E 31/07/2012 01/08/2012 N

SBL UTILITY SEARCH TRACKER (NRSWA)

EMAIL:

NORTH SOMERSET COUNCIL

BRISTOL CITY COUNCIL

1

Utility company Address Contact detailsSENT BY

(E/L)SENT DATE DATE RECEIVED

AFFECTED

(Y/N)C3 budget estimate C4 detailed estimate?

General

CorrespondenceCURRENT STATUS

checked

on CAD

SBL UTILITY SEARCH TRACKER (NRSWA)

Bristol Water PLC [email protected] E 31/07/2012 Y

Cable & Wireless UK [email protected] E 31/07/2012 08/08/2012 Y

Gamma Communications Ltd [email protected] E 31/07/2012 01/08/2012 N

Easynet Telecoms Ltd. [email protected] E 31/07/2012 Y AFFECTED, AWAITING RESPONSE

Mad attempts to contact company but

no response. 2nd C2 enq sent to

[email protected]

Bristol City Council [email protected] E 31/07/2012 Y Traffic Signals at junctions

Instalcom (Formerly Fibernet) [email protected] E 31/07/2012 31/10/2012 Y

Kcom (Formerly Affiniti) [email protected] E 31/07/2012 10/08/2012 N

Verizon Business [email protected] E 31/07/2012 24/10/2012 Y

BNET

BNET Network Client Services

CSS Romney House

Romney Avenue

PO Box 1380

Lockleaze

BRISTOL

BS99 3HB L 31/07/2012 09/08/2012 Y

Wessex Water Plc

Wessex Water PlC

The Developer’s Group

Claverton Down Road

Claverton Road

BATH

BA2 7WW L 31/07/2012 Y

Telewest Broadband

(Virgin) www.digdat.co.uk N/A Search date: 04/09/12 04/09/2012 Y

Colt Telecomms (Orange /

MayGurney) www.maygurney.co.uk N/A Search date: 04/09/12 04/09/2012 N

B.T. www.swns.bt.com/pls/mbe/welcome.home N/A N/A 10/12/2012 Y

Government Oil

& Esso Pipelines www.linesearch.org N/A Search date: 04/09/12 N

Western Power Distribution REGISTER N/A Search date: 04/09/12 Y

British Gas Transco (National Grid) www.linesearch.org N/A Search date: 04/09/12 N

Utility overlaps

Affected

Unaffected

Awaiting response

Allcom is now owned/operated by Instalcom

INTERNET:

OTHER:

LETTER:

2

Chainage locationType of plant- underground/

overhead?

Utility description - size,

material etcComments Potential Solution

Ch 590-800 Underground

30" PSC pipe

Equivalent to approx. 750mm dia

pipe

Runs along the edge of the carriage way in

area of fill. At Ch700 WM is in central

C'way

Redirect route or concrete slab

for additional pressure on pipes.

Ch 950 Underground

800mm DI pipe, 30" PSC pipe,

30" CI pipe all interconnected

north of the rail line

WM DOES NOT cross the road, but may be

cause for concern for proposed bridge

construction over railway.

N/A

Ch 1000 & 1080 Underground

Bristol Water Duct Crosses road at a skewed angle at these

chainages where the SBL has

embankments either side.

At embankment fill concrete slab

for additional pressure. Lower

duct at embankment cuts for SBL

construction.

Ch 1150-1320 Underground800 mm DI pipe, 30" CI pipe,

800mm PSC pipe all connecting

south of the rail line

Will run along the new embankment fill,

then cross SBL at 1320

Redirect route or concrete slab

for additional pressure on pipes.

Ch 2000 Underground

27" CI pipe, 20" CI pipe, 10" CI

pipe all running beneath the A38

carriageway.

3 WM lie centrally underneath A38. The

SBL crosses the A38. The crossroad

junction/roundabout will affect the

utilities, but this is not envisaged to be

significant.

Localised protection

Ch 2850-3030 UndergroundWM along Highridge Green road footpath.

N/A

Ch 3030-3050 UndergroundWM crosses road and runs along the

centre of the existing carriageway.

None- should be at carriageway

construction depth.

Ch 3080 UndergroundCrossing over of 2-4 WM from each road

meeting at the junction.

Lower if works for pedestrian

crossings interfer with service.

Ch 3080-3530 (3200,3250,3350) Underground

4 WM in verges/ footway/ carriageway of

King Georges road. This section of the SBL

through the existing King Georges Road

ought to avoid existing utilities present

beneath the carriageway.

Some utilities in the verge may

be lowered to avoid disruption

to services.

Ch 3530 UndergroundWM & Duct crossing at junction along

Queens road.

None- should be at carriageway

construction.


2 WM and a Duct run along the edge of the

SBL route. WM may clash with works

taking place for sound barrier construction.

WM cross SBL at several locations at

skewed angles.

Lower pipes on carriageway road

edge if not at adequate depth.


2 WM and a duct runs under new bus stop

area.

May require lowering if found to

be at inadequate depth.

Ch 4110-4140 UndergroundWM under new Bus Stop location Lower/ concrete slabunder bus

stop.

Ch 4140 Underground

Various pipes: 300mm AC pipes,

600mm AC pipes, 600mm PSC

pipes, 15" SI pipes in the

protected corridor.

WM crossing the proposed controlled

crossing along Hareclive road footway.

The pipes may require lowering

as in the proximity of extensive

works for the new crossings.

Whitchurch Lane Underground

WM crosses link road from Whitchurch

lane to SBL, and runs along existing

Whitchurch lane where new toucan

crossing will be installed.

N/A

Ch 4290-4454 (4420) Underground

4'' CI pipes, 6'' CI pipes, 600mm

AC pipes, 180mm MPDE pipes in

the protected corridor.

WM runs along North side of SBL, should

be at sufficient depth as currently installed

under existing carriageway. Crosses SBL at

4420. Some pipe connections cross the

route of the SBL including a 180mm MDPE

as it joins with the roundabout on

Hengrove Way

The utilities in these areas aren't

considerable and thus could be

lowered or diverted as

appropriate.

Cover depths: Footpath/ Verge 750mm

Roads 900mm

KEY Description

CI Cast Iron

PSC Prestressed Concrete

DI Duntile Iron

AC Asbestos Cement

DAV Double Air Valve

BRISTOL WATER

UTILITY KEY


600mm AC pipes, 600mm PSC

pipes, 15" SI pipes in the

protected corridor.


600mm DI pipes, 600mm AC

pipes, 15" SI pipes, 5" CI pipe 3"

CI pipe beneath King Georges

Road

3

HPPE High Pressure Poly Ethylene

MDPE Medium Density Poly Ethylene

SI Spun Iron

Large mains

A minimum clearance of 4m must

be maintained between the walls

of the pipelines and the footings

of any structure.0.5m from foundations of

boundary wall/ fence1.5m from footings of any

structure

TreesNo trees or large shrubs should be planted over or within 3.0 metres

of our apparatus, or the proposed route of our apparatus, unless

suitable root restriction methods are taken. If root restriction is to be

considered it should extend at least 1.5 metres below finished

surface level, in which case the minimum clearance between the

wall of our pipeline/apparatus and the root restrictor can be reduced

to 0.5 metres. Developers should consult an arboriculturist for

advice on the minimum clearances required between root protectors

and trees/shrubs.

Should our pipeline have to pass between two trees/large shrubs, a

minimum clearance of at least 3.0 metres must be maintained

between their respective boles, even where root restrictors are

installed.

Small mains

Easement strips are typically 5-10m wide.

EASEMENTS

Minimun clearance distances between pipes and structures

4


overhead?


material etcComments Proposed Solution

Ch 2010 UndergroundTelecomms - fibre optics

encased in polyethelene

Two lines running through the centre of the

new roundabout. Lie in existing verge and

carriageway edge. The depth of these pipes

are unknown at this stage, but based on NJUG

guidelines this is likely have a depth of

between 450-600mm in carriageway and 250 -

350mm in verge.

Fibre optics are difficult to divert or lower due to the

nature of the cables. As such the proposed junction

on the A38 should avoid any works that might affect

the cables. Pavement depths for the SBL have not

been designed at this stage but a min. of 450mm

likely.

CABLE AND WIRELESS

5


overhead?Utility description - size, material etc Comments Potential Solution

Ch 100 Underground

Twin foul sewer pipes 300& 375mm

dia

The depth of these pipes are unknown at this

stage. Crosses road almost at 90 degrees

Concreteslab to resist additional

pressure from SBL and small

embankment.

Industrial access (Ch 740) Underground Culvert 2.3m dia. Crosses access road Concrete slab to protect pipe


Foul sewer pipe 225mm dia. Sewer pipe runs along SBL verge

(embankment fill)

Concrete slab to resist additional

pressure from embankment or divert.


Foul sewer pipe 225mm dia. Crosses SBL at an angle The pipe will need to be diverted or

lowered as earthworks will be

lowered in this section.


2 x Surface water sewer 225mm dia

and Foul sewer pipe 225mm dia.

Pipes cross SBL on Highridge road connecting

2 surface manholes and 1 foul manhole at the

Highwridge Green junction

Diversions or lowering of pipes may

be required depending on depths

where new pavement is being

constructed.

Ch 3100 -3330 (Ch 3210, 3340) Underground

Surface water sewer 225mm dia and

foul sewer pipe 150mm dia.

Pipes run in the verge/footway of King

George's Road and cross the road at chains in

brackets.

N/A

Ch 3500 - 3520 Underground

Surface water sewer 225mm dia Pipe runs in the footway/verge along King

George's Road.

N/A

Ch 3530 Underground

2 x Surface water sewer 225mm dia

and Foul sewer pipe 225mm dia.

3 pipes crossing Queens road and 2 pipes

running along Queens road.

Consider lowering of pipes at new

pedestrian crossing points if

construction depths clash with utility

depth.

Ch 3580 Underground

Foul sewer pipe 225mm dia, surface

water sewer pipe 300mm dia,

culverted water course pipe, large

underground attenuation tank

SBL must avoid the existing Wessex

Water underground storage tank

located in the protected corridor

area.


Network of pipes consisting of foul

sewer pipe 150mm dia, surface water

sewer pipe 225mm dia, drain pipe

unknown dia, large underground

attenuation tank.

Another foul sewer pipe 225mm dia

and surface water sewer pipe 675mm

dia connecting to manholes and

underground storage tank.

SBL must avoid the existing Wessex

Water underground storage tank.

Alignment to continue south of

ungerground tank. Some connecting

pipes will be affected.

Ch 4110 UndergroundSurface water sewer pipe unknown

dia-possibly 225mm Single pipe crosses the SBL and new bus stop.

N/A

Ch 4180 UndergroundSurface water sewer pipe unknown

dia-possibly 225mm Single pipe crosses the SBL at this location

N/A

Ch 4190 UndergroundFoul sewer pipe 225mm dia, surface

water sewer pipe 225mm dia,

manholes Exiting sewer pipes on Hareclive Road

N/A

Ch 4280-4454 (Ch4290, 4320,

4350, 4395)Underground

Foul sewer pipe 150 & 225mm dia,

surface water sewer pipe 150 &

225mm dia

SWD runs along new carriageway. SWD and

Foul pipes cross SBL at chains in brackets.

Pipes to be lowered or diverted if

found to be at inadequate depths.

WESSEX WATER

There is a major pipe network in this area with

a large underground attenuation tank. The

costs to relocate/divert this network of utilities is

estimated be extremely high.

6


overhead?



Ch 180 Overhead HV Overhead cable N/A

Ch 300 Overhead to underground HV Overhead cable. There could be a timber

electricity post in the vicinity due to the change in

direction of the overhead cable. The cable

appears to transition into an underground cable

Relocate post at a safe distance from

the SBL. Alternatively, realign route

depending on cost?

Ch 505 Underground HV In vicinity of field access N/A

Ch 520 - 800 Underground HV This underground cable crosses runs under a

section of fill embankment for the SBL. Depth is

estimated to be between 450 -1200 mm below

ground.

Concrete slab or divert around

embankment, or leave as existing.

Ch 960 Underground LV This underground cable crosses the SBL in

proximity of proposed bridge over railway. Depth

is estimated to be between 450 -1200 mm below

ground.

N/A

Ch 2680 Overhead HV Crosses over SBL N/A

Ch 2820-3080 Overhead & Underground LV Overhead cable along verge. Underground the

centre line of the SBL estimated depth between

450 - 1200mm below ground.

Consider lowering LV underground if

carriageway construction depth

interfers with cables.

Ch 3085 Overhead LV Overhead cables connecting to properties Affected electricity cable to be

relocated or changed to underground

cables

Ch 3090 - 3520 (Ch 3160, 3340,

3400)

Underground HV & LV Cables running in the verge/footway along SBL/

King Georges Road. Small service connections

to street lighting columns. LV cross underneath

SBL at chains in brackets.

N/A

Ch 3540, 3550 Underground HV & LV LV cables crossing the SBL/ King Georges Road

at 90 degrees. 2 X HV crossing Queens road at

pedestrian crossing.

Relocate or lower cables due to

extensive crossing works

Ch 3550-3600 Underground 4 X HV Cables in verge and crossing under proposed

bus stop position.

Concrete slab underneath new bus

stop

Ch 3850-4000 Underground 2 X HV HV cables in the SBL verge, carriageway and

central reserve along the protected corridor in

close proximity to the sound barrier at Ch 3880.

Consider concrete slab or lowering if

not at carriageway construction depth.

Ch 3890 Underground HV Crosses under SBL and under sound barrier. Consider concrete slab or lowering if

not at carriageway construction depth.

Ch 4100-4150 Underground HV HV under the proposed bus stop on SBL in the

reserved corridor. Crosses SBL at 4140.

N/A

Ch 4180 Underground 2 X HV & 1 PL cable ( <1kV ) HV cables and a PL cable running in the verge

on Hareclive Road. HV cross the road at a

skewed angle at CH.4200. PL cable crosses

SBLat crossing point.

N/A

Ch 4290-4454 (Ch 4280, 4320,

4340, 4450)

Underground LV LV running under SBL on Whitchurch Lane and

crossing at chains in brackets

N/A

KEY Description

LV Low voltage

HV High voltage- 11kV

HV 1 High voltage- 33kV



WESTERN POWER

UTILITY KEY

7


overhead?



Industrial access- Brook Gate Underground Near to the new access location uner the footpath Not envisaged to be of concern

Ch 2920 - 3080 Underground LP 63 PE and 90 PE

The existing gas pipes run along the edge of

Highridge Green, which will be constructed to new

carriageway.

None- should exist at adequate

depth

Ch 3080 UndergroundLP Pipe from Highridge road 6"

ST Cross SBL at Highridge road junction. Lower/slab if found not to be at

carriageway construction depth.


LP King Georges road - north

side 180 PE (IN 8" SI) - south

side 75 PE (IN 4" SI). Crossing

pipes 125 PE (IN 6" SI)

Existing gas pipes run along King Georges Road/ SBL

on either side in the verges of the new road. Some of

the gas pipes cross over at Ch3210, Ch3350 and

Ch3450.

N/A

Ch 3530 Underground LP 125 PE and 8" ST Existing gas pipes runs along Queens Road. None- should exist at adequate

depth

Ch 4150 UndergroundLP 12" SI, off this pipe 6" CI, 6"

SI and 180 PE

Pipes along Hareclive road cross SBL at new

junction.

Divert/lower if crossing works

affect pipes.

Ch 4300 Underground LP 90 PE

Ch 4320 Underground LP 75 PE (IN 4" CI)

Ch 4390 Underground LP 63 PE (IN 4" CI)

Pipe depth estimated to be a min of 750mm below carriageway

construction based on NJUG guidelines

KEY Description

LP Low Pressure

CI Cast Iron

PE Poly Ethylene

SI Spun Iron

ST Steel

Mechanical Excavation 3m (1m in respect of LP mains)

Piling/ Boring 15mWelding or other hot works

involving naked flame 15m

Hydraulic testing 8m

Explosives 250m

EASEMENTS

WALES AND WEST

UTILITY KEY

Crosses new road at these chains and runs along the

edge of the road between these chains.

Lower/slab if found not to be at


8


overhead?Jan-13



Ch 940 UndergroundFibre optics run underneath the

railway

None required as SBL bridge

construction over the railway should

not affect this area.

Ch 2000 Underground

Fibre optics run underneath

existing carriageway (A38) at

location of proposed new

roundabout layout.

Fibre optics are difficult to divert or

lower due to the nature of the

cables. As such the proposed

junction roundabout on the A38

should avoid any works that might

affect the cables. Pavement depths

for the SBL have not been designed

at this stage but a min. of 450mm is

likely.

INSTALCOM - GLOBAL CROSSING AND FIBERNET

Actual depths are unknown at this

stage but it is noted that normal

depth of cover for apparatus and

ducts are as follows: Carriageways

600mm Footways

350mm Verges

450mm

Telecomms - fibre optics

encased in polyethelene

Mechanical borers and/or excavators shall not be used within 1m of

apparatus

EASEMENTS

9


overhead?



Ch 3520 Underground

VZB Backbone fiber duct in

carriageway /footway. In vicinity

of proposed pedestrian

crossings.

The depth of these pipes are unknown at

this stage, but based on NJUG guidelines

this is likely to have a depth in

carriageway of 450-600mm and a depth

in verge of 250-350mm

SBL route will mean that existing

footway will be carriageway

construction. Lowering ducts

may be necessary as existing

depth is likely to be less than the

required 600mm.

VERIZON

10


overhead?



Industrial access, Brook Gate

new junctionUnderground Under existing footway and accesses

Ch 2000 Underground

3 Cables along A38, 2 in carriageway (cottage

side), 1 in the verge the opposite side. The

crossroad junction/roundabout will affect the

utilities, but this is not envisaged to be

significant.

Utilities can be lowered to avoid

disruption to services.

Ch 2820-3080 UndergroundTwo cables run in the verges either side of the

existing route of Higridge Green.

Consider diversion/lowering of

cables where the SBL

carriageway construction and

bus stop is positioned along

existing verge.

Ch 3080-3090 UndergroundCrossover of cables from joining roads in

vicinity of new pedestrian crossing

Consider diversion/lowering

where the new crossings are

located in positions of existing

verge/footway.

Ch 3100-3520

(3210,3210,3350,3280,3360)Underground

Run along verges and in the carriageway,

crosses road at chains indicated in brackets.

None- Verge is remaining verge

and cables should exist at

adequate carriageway cover

depth.

Ch 3530 UndergroundUnder the carriageway in location of new

pedestrian crossings

Ch 3900 Underground

Runs around the end of Gate House close.

Location of cable would need to be checked as

it may interfere with the sound barrier

construction.

Unlikely to be cause for concern.

If found to clash with sound

barrier, consider realignment of

the barrier.

Ch 4110 UndergroundCable crosses SBL in protected corridor, in

vicinity of new bus stop

Lower cables. However cable

runs from road to road- may be

at carriageway depth.

Ch 4140 Underground In vicinity of new crossings of Harclive roadNone- Cables should be at


Whitchurch lane

Ch 4280Underground

Runs along Whitchurch road verge and

carriageway and joins SBL at 4300 crossing at a

skewed angle.

None- Cables should be at


Ch 4350 Underground Crosses SBL

None- Crosses existing road so

should be at carriageway

construction depth.

Ch 4400-4454 UndergroundCrosses at skewed angle over existing

carriageway construction.

None- Cables should be at

carriageway construction as

existing.

The depth of these pipes are unknown at this

stage, but based on NJUG guidelines this is

likely have a depth on carriageway of 450-

600mm and a depth on verge of 250-350mm

BT

EASEMENTS

To avoid damage it is recommended that mechanical

excavators or borers are not issued within 600mm of BT

Cables in grey uPVC ducting

50-90mm diameter. Fibre

optics may be present but are

not identifiable at this stage.

11


overhead?



Industrial estate access, Brook

gate bendUnderground Runs along existing footway

Ch 2890-3100 UndergroundRuns along the footway of Highridge

Green

Ch 3100 UndergroundIn the vicinity of new crossing points

on Highridge road

Ch 3100-3550 UndergroundRuns along the existing footways of

King Georges road

Ch 4180 UndergroundIn vicinity of new pedestrian crossings

on Hareclive road.

Whitchurch lane Ch

4300-4454Underground

Runs along the footway of Whitchurch

lane and under a new build out at the

junction at which Whitchurch lane

joins SBL at Ch 4300

VIRGIN

Fiber optic cable. The

depth of these pipes are

unknown at this stage, but

based on NJUG guidelines this

is likely have a depth of 450-

600mm in the carriageway and

a depth of 250-350mm in the

footway.

Fibre optics are difficult to divert

or lower due to the nature of the

cables. As such the proposed

construction should avoid any

works that might affect the

cables. If SBL is found to clash

with the cables and no other

solution can be found then

cables would require lowering or

diverting.

12


overhead?Utility description - size, material etc Comments Proposed Solution

Ch 2980 Underground Crosses SBLNone- Should be at adequate

depth.

Ch 2980-3100 UndergroundRuns under new carriageway and bus stop

location.

Fibre optics are difficult to

divert or lower due to the

nature of the cables. As such the

proposed bus stop should avoid

any works that might affect the

cables.


Runs along King Georges road under existing

verge (South). This will be new carriageway

construction.

Fibre optics are difficult to

divert or lower due to the

nature of the cables. As such the

proposed works should avoid

any works that might affect the

cables.

B-NET

Plastic Ducting containing Fibre Optic

cabling at a depth of 450mm to the top

and there should be one duct.

13

technical note - · pdf file03/01/2014 · technical note project south ... drawings...

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