ord-d-ald09r-g025.pdf

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REVDRAWING NO

DATE JCN

APPROVED BY

ISSUED BY

CHECKED

DRAWN

DESIGNED

SUBMITTED BY

REVIEWED BY

FEDERAL AVIATION ADMINISTRATION

DEPARTMENT OF TRANSPORTATION

REV

DATE

APPROVED

DESCRIPTION JCN

DATE

REDLINE

APVD

A

12" 3’-10" 1

12"

9" 2’-4"

13"

8"

1’-7"

1’-7"

1’-3"

1’-3"

5’-9"

CL

FOUNDATION

OF

LOCATION

CONDUIT

SECONDARY

RODS BY ComEd

GROUND GRID AND

TRENCH BY CUSTOMER

FRONT OF TRANSFORMER

GROUND WIRE

1" CONDUIT FOR ComEd

LOCATION

CONDUIT

PRIMARY

OPENING

CONDUIT

BOX OUT

MANHOLE

DUCT 22 TO

BAY-4 FUSE

EMH-013

MANHOLE

DUCT 21 TO

BAY-3 FUSE

CONTINUOUS TO MANHOLE

ALL CONDUIT SHALL EXTEND

DEGREE BENDS AS SHOWN.

POSITION 5 INCH DIA., 90

TO MANHOLE

DUCT 12

BAY-1 DISC

TO MANHOLE

DUCT 11

BAY-2 DISC

PER COMED C5302.B

COMED SWITCHGEAR FOUNDATION

PRECAST 4-BAY

COMED STANDARD #C5288

TRANSFORMER PAD PER

REINFORCING #3 @ 6" (NOTE 2)

ROUND EDGES

FINAL GRADE

CRUSHED AGGREGATE

4" MINIMUM CA-6

1/0

TO CECO MANHOLE

PRIMARY (2) 5" CONDUIT

TO NAVAIDS FACILITY

SECONDARY 3" CONDUIT

NOTE 5

NOTE 7

NOTE 6

6" MINIMUM CRUSHED STONE OR GRAVEL (NOTE 4)

(SEE NOTES 1 & 2)

FINAL GRADE

NOTE 3

TO CECO MANHOLE

PRIMARY (2) 5" CONDUIT

TO NAVAIDS FACILITY

SECONDARY 3" CONDUIT

C-C

A-A

PLAN

A-A

SECTION

C-C

COMED SECTIONALIZER FOUNDATION

COMED PAD

PROPOSED SECTIONALIZER FOUNDATION, PLAN VIEW

SECTION

NOT TO SCALE

TRANSFORMER PAD DETAIL

E D

M

IS

S

U E

D F

O R

NAVAIDS

IL

07/24/2019 1898272

ORD-D-ALD09R-G025

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ENGINEERING SERVICES

ALD

CHICAGO O’HARE INTERNATIONAL AIRPORTCHICAGO

PROJECT ENGINEER MGR: ENGINEERING

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THIS DRAWING PRODUCED ON THE AGL REGION MICROSTATION SYSTEM

ATO - TECHNICAL OPERATIONS CENTRAL SERVICE AREA

1.

2.

3.

NOTES:

18" (W) X 14" (L).

RANGE 112.5KVA THRU 300KVA, THE SECONDARY CONDUIT FEED BOX OUT DIMENSIONS ARE

TRANSFORMER RATINGS BETWEEN 45KVA AND 75KVA. FOR TRANSFORMERS RATING IN THE

FOR TRANSFORMER PADS, SECONDARY FEED BOX OUT DIMENSIONS ARE 14" (W) x 14" (L) FOR

COMED REPRESENTATIVE PRIOR TO PREPARING THE PAD FOUNDATIONS.

CONTRACTOR REFERED TO COMED SPECIFICATIONS STANDARDS "C5288" AND COORDINATED WITH

TRANSFORMER DETAIL SHOWN IS FOR UP TO 167 kVA. COORDINATED WITH COMED FOR REQUIRED DIMENSIONS.

9. TERMINATED PRIMARY AND SECONDARY CONDUITS FLUSH WITH TOP OF FOUNDATION.

BENDS AT SECTIONALIZER ARE HEAVY WALL PVC CONDUIT CONCRETE ENCASED.8.

COVERED FLANGE WITH 2 INCHES TO 3 INCHES OF EXCAVATED MATERIAL PRIOR TO BACKFILL.7.

FOUNDATION LEVELED BEFORE BACKFILLING.6.

PLUGGED UNUSED CABLE OPENINGS IN PRECAST FOUNDATION.5.

AND POURING FOUNDATION.

SAND OR FINE EXCAVATED MATERIAL. COMPACTED THOROUGHLY BEFORE PLACING AGGREGATE

AFTER PRIMARY AND SECONDARY CONDUITS ARE IN PLACE, BACKFILLED WITH SCREENINGS, 4.

IN THE SWITCHGEAR.

THE ENTRANCE OF RODENTS, GASES, OR DAMP AIR WHICH MAY CAUSE CONDENSATION

SEALED THE CONDUITS EXITING OR ENTERING THE SWITCHGEAR FOUNDATION. THIS PREVENTED 3.

FINAL GRADE WELL DRAINED AT ALL TIMES.2.

WILLEY BLOCK CO., b. UTILITY CONCRETE PRODUCTS CO., c. WELCH BROS., INC., AND d. CONCAST, INC.

DISTRIBUTION ENGINEERING FOR ANY QUESTIONS. APPROVED MANUFACTURERS ARE a. ELLER &

PRECAST EXTENSION USED WITH CONCRETE FOUNDATION CAT ID 0000701115. CONTACTED

MANUFACTURER IN ACCORDANCE WITH CECO DETAIL C5302G, SHEET 4. SPECIFY CAT ID 0001600733 18"

CONTRACTOR PROVIDED PRECAST SECTIONALIZER FOUNDATION FROM AN APPROVED CECO1.

NOTES:

SECONDARY CABLE AND ALL DUCT ALSO TO BE INSTALLED BY THE CONTRACTOR.

INSTALL/TERMINATE CONNECTIONS TO THEIR TRANSFORMER SECONDARY CONNECTIONS,

SHALL BE CONSTRUCTED BY THE CONTRACTOR. COORDINATE WITH COMED TO

RODENT INFESTATION AND NESTING.

INSTALLED, THE BOX OUTS SHALL BE FILLED WITH CRUSHED STONE TO PREVENT

HAS BEEN INSTALLED AT THE DIRECTION OF COMED. AFTER CONDUITS ARE

BACKFILL PRIMARY & SECONDARY BOX-OUTS WITH CRUSHED AGGREGATE AFTER CONDUIT

THE TOP OF THE PAD.

BUSHINGS. THE TOP OF BELL ENDS AND GROUNDING BUSHINGS MUST BE LEVEL WITH

EQUIPPED WITH BELL ENDS. ALL GRS CONDUIT MUST BE EQUIPPED WITH GROUNDING

ALL PVC CONDUITS ENTERING TRANSFORMER OR SECTIONALIZER FOUNDATIONS MUST BE

APPROVAL OF PRE-CAST TRANSFORMER PAD PRIOR TO PROCURING STRUCTURE.

CONTRACTOR MUST COORDINATE WITH THE CONTRACTING OFFICER IN ORDER TO OBTAIN

TO BE ACCOMPLISHED BY FAA CONTRACTOR.

BACKFILL, TRENCH FOR COMED-INSTALLED GROUND RING AND SITE RESTORATION

FINAL GRADE MUST BE WELL DRAINED AT ALL TIMES.

TOP OF FOUNDATION MUST BE SMOOTH AND LEVEL.

MAY BE POURED ON SITE AND SHALL MEET ALL APPLICABLE COMED REQUIREMENTS.

MUST BE PURCHASED FROM ACCEPTABLE, APPROVED COMED SUPPLIER. CAST-IN-PLACE

TRANSFORMER FOUNDATION CAN BE PRECAST OR CAST-IN-PLACE. PRECAST VERSION

CAST-IN-PLACE VERSION IS NOT ACCEPTABLE.

IT MUST BE PURCHASED FROM ACCEPTABLE, APPROVED COMED SUPPLIER.

SECTIONALIZER FOUNDATION SHALL BE PRECAST VERSION PER COMED STANDARD AND

PLACING CRUSHED STONE OR GRAVEL AND PLACING FOUNDATION.

SCREENINGS, SAND OR FINE EXCAVATED MATERIAL THOROUGHLY COMPACTED BEFORE

AFTER PRIMARY AND SECONDARY CONDUITS ARE IN PLACE, BACKFILL WITH

AREAS.

PRIMARY AND SECONDARY CONDUIT MUST COME THROUGH FOUNDATION IN DESIGNATED

INSTALLING CONDUIT.

DO NOT DISTURB GROUND IN FOUNDATION AREA MORE THAN NECESSARY WHEN

PAD.

SEE COMED STANDARD C5302.G FOR ADDITIONAL INFORMATION ON THE SECTIONALIZER

PAD.

SEE COMED STANDARD C5293.A FOR ADDITIONAL INFORMATION ON THE TRANSFORMER 1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

NOTES:

COMED ELECTRICAL DETAILS

CECO EQUIPMENT FOUNDATION DETAILS

RC