cable stacking rev 02 20th august 2015

8/18/2019 Cable Stacking Rev 02 20th August 2015

http://slidepdf.com/reader/full/cable-stacking-rev-02-20th-august-2015 1/43

20 August 2015

PROPOSED

CABLE STACKINGFOR EXPRESSWAY PROJECTS



2

CONTENTS

1. INTRODUCTION

2. UNDERGROUND INSTALLATION METHOD

3. CABLE STACKING

4. MAINTENANCE5. CONSTRUCTION

6. FUTURE SUBSTATION

. CURRENT CARRYING CAPACITY

!. CABLE PULLING

". COST AND TIME

1#.INSTALLATION REFERENCES

PROPOSED CABLE STACKINGFOREXPRESSWAY PROGRAMME



3




4

CORRIDOR ISSUES$ BASIS FORCABLE STACKING

•. LIMITED CORRIDOR SPACE A%AILABLE

•. LARGE NUMBER OF CIRCUITS TO DI%ERT &ROUTE WITHIN THE A%AILABLE CORRIDOR

•. MMUP AD%ISED THAT NO FURTHERLANDTAKE WILL BE APPRO%ED




5


CORRIDOR CONSTRAINS

RAS ABU ABOUD STREET

REQUIRED CORRIDOR = 13.5 m

AVAILABLE CORRIDOR = 2.7 m

RA S A B U A B

O U D

S T R E E T

L = 2 25 m

L = 21 0 m

L= 2900 m

L= 2850 m

A RING ROAD

B RING ROAD

A L M U N T A Z A H

S T R E E T

A L M A T A R S T R E E T

S A L

A R O A

D

A L ! H A L E E " S T R E E

T

B # RING ROAD

REQUIRED CORRIDOR = 12.5 m

AVAILABLE CORRIDOR = 2.5 m



6

2.1 OPTIONS AT CONSTRAINT AREAS


CABLE TUNNEL $%& CUT ' COVER CABLE TUNNEL $%& TBM

CABLE STAC!ING



7

2 UNDERGROUND INSTALLATION METHMETHOD CAUSE

1. DIRECT BURIED INADEQUATE UTILITY CORRIDOR AT FEW

AREAS

2. CABLE STACKING • SIMPLE CONSTRUCTION

• LESS EPENSI!E

• NO RUNNING COST• MINIMUM MAINTENANCE REQUIRED

3. CABLE TUNNEL

" CUT AND CO!ER

• REQUIRED REGULAR MAINTENANCE

• REQUIRES ADDITIONAL LAND TAKE FOR

UTILITY BUILDINGS AND !ENTILLATION S#AFTS

• EPENSI!E

4. CABLE TUNNEL

" TBM

• MOST EPENSI!E AMONG OPTIONS

• REQUIRED REGULAR MAINTENANCE

• REQUIRES ADDITIONAL LAND TAKE FOR

UTILITY BUILDINGS AND !ENTILLATION S#AFTS




$

3' CABLE STACKING

CABLE ARRANGEMENTS IN DUCT BA


315%



&

3.1' CABLE STACKING

PICAL DUCT ARRANGEMENT

SEPARATE UP%C DUCTS FOR E%ERY CABLSPACING BETWEEN DUCTS HA%E BEEN

DERI%ED UPON THE SIMULATION RESULT


315%



1%

3.2' SAFETY AND RELIABILITY DEDICATED ACCESSFOR E%ERY SYSTEM %OLTAGES

L% ACCESS CHAMBER

M% ACCESS CHAMBER

H% ACCESS CHAMBER

EH% ACCESS CHAMBER




11

3.3' SAFETY AND RELIABILITY

L% ACCESS CHAMBER( MAINTENANCE AND MATERIAL ACCESS




12


L% CHAMBER


2.3'



13


M% ACCESS CHAMBER( MAINTENANCE AND MATERIAL ACCESS




14


M% CHAMBER




15


H% ACCESS CHAMBER ) UPPER CONFIGURATI

MAINTENANCE AND MATERIAL ACCESS




16


EH% CHAMBER( UPPER CONFIGURATION




17


H% ACCESS CHAMBER ) DOWN CONFIGURATI

MAINTENANCE AND MATERIAL ACCESS




1$


EH% CHAMBER( DOWN CONFIGURATION




1&

3.' SUSTAINABLE DESIGN

!# YEARS OF RESOLUTION

4# YEARS OF LIFE SPAN

FOR THE INSTALLED CABLES SPARE FOR 41 TO !# YEARS

ECO FRIENDLY

REDUCED CARBON FOOTAGES( NO MEP E*UIPMENTSDIESEL GENERATOR+ MOTORS+..




2%

3.' SUSTAINABLE DESIGN

CO FRIENDLY

SOFT LANDSCAPING POSIBILITY ( TO REDUCE URBAN HEAT RADIATION( IMPRO%ED AIR *UALITY

AND LOWER GREENHOUSE EMISSION




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3.!' SAFETY AND RELIABILITY

NO MECHANICAL E*UIPMENTS

JUMBO JET FAN+ SMOKE EXTRACT FA

FIRE PUMP CHILLER DIESEL GENERATOR MOTOR


PROPOSED CABLE STACKING



22


3.!' SUSTAINABLE DESIGN

SA%E EARTH ( ENERGY SA%INGS SA%E LIGHTING ENERGY WATER ,-..+ FIRE WATER+ PIPING'

FUEL ,-..+ STANDBY DIESEL GENERAT KEEP THE EN%IRONMENT COOL ,HEAT

FANS' POWER CONSUMPTION




23

3."' SAFETY AND RELIABILITY

/ARDOUS

IN CASE OF FIRE IN A DUCT+ THERE WIL

BE NO CHANCE TO SPREAD OR DAMAGETHE OTHER CABLES

CONCRETE ENCASEMENT EFFECTI%ELY

PROTECTS THE CABLE DURING THEGROUND MO%EMENT





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4' MAINTENANCE

INTAINABILITY

LIGHT MAINTENANCE FOR CHAMBERS

NO MAINTENANCE FOR DUCT BANKS

PERIODIC MAINTENANCE

SA%E RE*ULAR & ANNUAL MAINT. CONTRA

TURE CABLE INSTALLATION

NO EXCA%ATION IS RE*UIRED




25

5' CONSTRUCTION CONSTRUCTABILITY

NO SPECIALI/ED CONTRACTOR FOR

CI%IL WORKS CONSTRUCTION

NO MOBILI/ATION PERIOD,APPROX. 12 MONTHS' FOR SPECI

MACHINERY IS RE*UIRED





26

6' FUTURE SUBSTATION

DIRECTLY BURIED CABLING POSSIBI


FUTURE

SUBSTATION

FUTURE

SUBSTATION




27


ROAD CROSSINGS AND FUTURE POSSIB





2$


TURE M% CONNECTION FROM EXISTING





2&


DIRECTLY BURIED CABLING POSSIBI





3%

' AMPACITY CALCULATIONS

RESULTS OF CALCULATIONFROM AN APPRO%EDKAHRAMAA CONTRACTOR


CABLE DETAILS AM(ACIT) REQUIRED AM(ACIT) O**ERED

22% K! 25%% SQ.MM 515 M!A 531 M!A

22% K! 16%% SQ.MM 315 M!A 315 M!A

66 K! 4%% SQ.MM 4% M!A 4% M!A

11 K! 24% SQ.MM 6.5 M!A 6.5 M!A

MA+IMUM CONDUCTOR TEM(ERATURE 8,.7, C0

HEN - CIRCUITS O(ERATING AT 100 LOAD/ OUTSIDE TEM(. AT SHA*T IS 58 C0




31

!' CABLE PULLING CALCULATION

RESULTS OF CALCULATION FROM ANAPPRO%ED KAHRAMAA CONTRACTOR


LENGTH O* ,50 M




32

"' COST AND TIME


T)(E INITIAL COST CONST. TIME LCC

CABLE STACKING

37%(%%%(%%%.%% QR

" T#REE #UNDRED

AND SE!ENTY

MILLION

24 MONT#S

NO RUNNING

COST

CABLE TUNNEL

" CUT AND CO!ER

74%(%%%(%%%.%% QR

" SE!EN #UNDRED

AND FORTY

MILLION

36 MONT#S

RUNNING

COST TO BE

ADDED

CABLE TUNNEL

" TBM

1(2%%(%%%(%%%.%% QR

" 1.2 BILLION 4$ MONT#S

RUNNING

COST TO BE

ADDED

TOTAL LENGTH = , !M




33

1#' INSTALLATION REFERENCES


!OREA




34



!OREA




35

1#' INSTALLATION SAMPLES


E+AM(LE O* CABLE ARRANGEMENT IN EHV HV ACCESS CHAMBERS




36



TRENCHING DUCTS




37



(RECAST ACCESS CHAMBER




3$






3&



(RECAST DUCT BAN!

(RECAST ACCESS SHA*TS




4%



DUCTILE IRON HEAV) DUT) COVER

AND *RAME ATER TIGHT

CONCRETE COVER SLAB




41



CABLE ENTRIES IN ACCESS CHAMBERS




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cable stacking rev 02 20th august 2015

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