ord-d-ald09r-g018.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

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DATE

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DESCRIPTION JCN

DATE

REDLINE

APVD

A

DUCT ARRAY

10’ (TYP)

6"

3" 2" 3"

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V A

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2’-6"2’-6" 3’-0"

NOT TO SCALE

MANHOLE/HANDHOLE GUARD WIRE DETAIL

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E A

R

MANHOLE/HANDHOLE

DUCT ARRAY

(EXOTHERMIC WELD)

GROUND ROD, TYP 2

STAINLESS STEEL

10’ X 3/4"

NOT TO SCALE

TYPICAL METHOD OF INSTALLING CONDUIT-ELEVATION

1.

2.

PROVIDE CONDUITS OF SIZES AS CALLED FOR ON THE PLANS.

MANHOLES OR HANDHOLES FOR DRAINAGE.

INSTALL CONDUITS AT A MINIMUM SLOPE OF 3"/100’ TOWARD

SPACER

MANUFACTURED

VIEW

ISOMETRIC

PLAN VIEW

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NOT TO SCALE

TYPICAL NON-REINFORCED DUCTBANK INSTALLATION

THE PLANS

INDICATED ON

OF CONDUITS AS

SIZE AND QUANTITY

ENVELOPE

CONCRETE

TRENCH

BOTTOM OF

CONDUITCOUPLING

SPACER

18" TYP

(TYP)

2"

ENVELOPE

CONCRETE

CONDUIT

SPACER

SPACER

CONDUIT

CONDUIT

NOT TO SCALE

TYPICAL DUCTBANK CONTINUATION DETAIL

6" VERTICAL

(TYPICAL)

CONTINUATION

CONDUIT

FUTURE DUCTBANK EXTENSION

PLACED AT THE END OF THE FURTHEST DUCT

4" x 4" INDICATOR POST 36" ABOVE GRADE

COUPLING AT TIME OF EXTENSION

EXTEND CONDUIT BY 2’ AND CONNECT WITH

APPROXIMATELY 30° ANGLE

TERMINATE CONCRETE AT

1.

2.

DUCTBANK AT THE END OF CONCRETE WITH 3" COVER.

TERMINATE THE REGULAR REBAR IN REINFORCED

CONDUIT SHALL BE CLOSED WITH PLASTIC CONDUIT PLUGS.

3.

TO THE FUTURE CONDUIT.

EXTEND BEYOUND THE SHEATHING TO PERMIT CONNECTION

ROW OF CONDUIT THE HEADS OF THE CONDUIT SHALL

STEPPED BACK APPROXIMATELY 6" FOR EACH HORIZONTAL

CONDUIT. THE END OF THE CONCRETE SHEATHING SHALL BE

STAGGERED APPROXIMATELY 3" FROM THE ADJACENT

THE END OF EACH CONDUIT SHALL BE PLUGGED AND

NOTES:

DUCTBANK CONTINUATION NOTES:

GUARD WIRE

1/0 CU BARE #

4/0 GREEN STRANDED #INSTALL

COPPER ("GROUND BUS") PER

SPECIFICATION L-115. BOND TO

ALL METALLIC ITEMS.

2’-6" EMBEDDED IN CONCRETE

4 REBAR #5’ LONG EPOXY COATED

ALL TESTING TO TAKE PLACE IN PRESENCE OF FAA R.E. 5.

AND OTHER DOCUMENTATION, SHALL BE TURNED OVER TO THE FAA R.E.

THE CALIBRATION OF THE TEST EQUIPMENT, METHODS , MEANS, ASSUMPTIONS, ERRORS,

BACKFILLING OPERATIONS. A TABULATED LOG OF ALL OF THESE VALUES, AS WELL AS

THE CONTRACTOR SHALL TEST EACH AND EVERY GROUND ROD INDIVIDUALLY PRIOR TO 4.

PARAGRAPH 5.4.3.3.2C.

THE GROUND RODS MUST VARY 10-20% TO PREVENT RESONANCE, PER FAA-STD-019F,

GROUND RODS ARE TO BE SPACED AT APPROXIMATELY 90’ INTERVALS. THE SPACING OF 3.

(OR GROUND PLATE IF APPLICABLE)

ALL CONDUCTORS MUST BE EXOTHERMICALLY WELDED TO THE GROUND ROD 2.

WITH FAA R.E. BEFORE CHANGING OUT THE GROUND ROD FOR A GROUND PLATE.

CANNOT BE INSTALLED, GROUND PLATES MAY BE SUBSTITUTED. CONFIRMATION REQUIRED

GROUND RODS SHALL BE INSTALLED AT LEAST 12" BELOW GRADE. WHERE GROUND RODS 1.

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07/24/2019 1898272

ORD-D-ALD09R-G018

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ENGINEERING SERVICES

ALD

CHICAGO O’HARE INTERNATIONAL AIRPORTCHICAGO

PROJECT ENGINEER MGR: ENGINEERING

o rd -d -a ld r-g .d g n

THIS DRAWING PRODUCED ON THE AGL REGION MICROSTATION SYSTEM

ATO - TECHNICAL OPERATIONS CENTRAL SERVICE AREA

RUNWAY 9R-27L NAVAIDS

DUCTBANK DETAILS

RC