ord-d-ald09r-g026.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

BONDING STRAP DOOR-

TO-FRAME THOMPSON

A/C

ANTENNA MAST

24" MAX

ALONG ROOF EDGE, 36" OC MAX

FAN

JB

S N

SEE NOTE 3

FLIGHT CHECK

CONDUIT TO EQUIPMENT

CABLES CONTINUE IN

TO ADJACENT TOWER (IF APPLICABLE, SEE NOTE 5)

(BOND GUARD WIRE TO SHELTER PERIMETER GROUND)

DIRECT-EARTH BURIED CABLES CONTINUE

EXOTHERMIC WELD (TYPICAL)

CAT. NO. 240X. SEE NOTE 3.

PIPE BONDING CLAMP, THOMPSON

4/0 AWG BARE (TYPICAL)

DOWN CONDUCTOR TO

EXOTHERMICALLY WELD

SERVICE ENTRANCE SWITCH

SEE NOTE 3.

36" OC MAX ON SIDING.

CAT. NO. A702 (TYPICAL).

BONDING PLATE, THOMPSON

CAT. NO. A532 (TYP OF 2)

SADDLE BASE, THOMPSON

ALONG RIDGE, 36" OC MAX

THOMPSON CAT. NO. A533

RIDGE CABLE SUPPORT,

CABLE HOLDER, THOMPSON CAT. NO. A166XX

CAT. NO. A141 (TYPICAL)

PARALLEL CLAMP, THOMPSON

CAT. NO. A588

GROUNDING CONDUCTOR

2 AWG BARE COPPER

NO. A28. SEE NOTE 1.

CONDUCTOR, THOMPSON CAT.

ALUMINUM ROOF AND DOWN

THOMPSON CAT. NO. 667BT (TYPICAL)

AIR TERMINAL WITH ADAPTER, 5/8" X 36",

GALVANIZED RIGID STEEL CONDUIT

AIR TERMINAL SUPPORT, THOMPSON CAT. NO. 82CA

2’ TO 6’

EXOTHERMIC WELD (TYPICAL)

CONNECTIONS)

GROUNDING ELECTRODE

(TYPICAL FOR ALL

EXOTHERMIC WELD

PVC CONDUIT STUB

GROUND WIRE IN 3/4"

4/0 AWG BARE COPPER

CONDUCTOR

GROUNDING ELECTRODE

SERVICE ENTRANCE

2 AWG THWN

4/0 AWG BARE COPPER, 30" DEEP

PERIMETER GROUNDING CONDUCTOR

DETAIL

NOT TO SCALE

BONDING STRAP

LOAD DISTRIBUTION WASHER

SEE TABLE "A".

1/4" DIAMETER AND GREATER.

REQUIRED FOR BOLTED CONNECTIONS

BELLEVILLE SPRING WASHERS.

BONDING BOLT

METAL ITEM TO BE BONDED

INSULATED CONDUCTORS. SEE NOTE 7.

2" PVC CONDUIT WITH TWO 4/0 AWG

(IF APPLICABLE, SEE NOTE 5)

TO ADJACENT TOWER

BOLTED CONNECTIONS FOR ELECTRICAL BONDING

MINIMUM 8" RADIUS

DOWN CONDUCTOR,

DETAIL

ROOF CONDUCTOR

EQUIVALENT

THOMPSON NO. 141 OR

MECHANICAL CONNECTOR

NOT TO SCALE

DOWN CONDUCTOR CONNECTION

CABLE HOLDER

CABLE HOLDER

DETAIL

ROOF CONDUCTOR

NOT TO SCALE

PER NOTE 7.

MAIN OR SUPPLEMENTAL GROUNDING PLATE

10’ (TYP)

ENCASED PVC CONDUIT

GROUNDING BUSHING OR TRANSITION TO CONCRETE

(TYPICAL).

A MINIMUM OF 12" DEEP

STEEL. TOP SHALL BE

3/4" X 10’ STAINLESS

GROUNDING ELECTRODE,

NOTE 9.

PER ORD-D-ALD09-G021

GROUND ACCESS WELL

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ORD-D-ALD09R-G026

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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

BOLT SIZE TORQUE (FT-LBS) NO. OF WASHERS REQ’D

1/4" 10 3

SOLON PART NO.

4-EH-70-301

21 3 5-EH-80-301

3/8" 34 3 6-EH-89-301

55 6

83 2 8-18-125-301

5/8" 3

5/16"

7/16"

9/16"

1/2"

3/4" 3

7/8" 3

3 15-H-187-1771"

7-L-70-301

N/A

10-EH-150-177

12-EH-168-177

14-EH-168-177

N/A

FROM FAA STD-019E, SECTION 4.1.1.2.4.2, TABLE II

TORQUE AND SPRING WASHER REQUIREMENTS FOR BOLTED BONDS

TABLE "A"

NOTES:

1.

2.

3.

4.

5.

6.

7.

8.

EQUIPMENT SHELTER FOR NAVAIDS

DETAILS FOR TYPICAL WOOD-FRAMED

LIGHTNING PROTECTION AND GROUNDING

RC

MINIMUM 2’-0" FROM ANY STRUCTURES.

COORDINATE WITH FAA COTR ON EXACT PLACEMENT OF GROUND ACCESS WELL.

THE SITE SPECIFIC DRAWINGS INCLUDED IN THIS SET.

AS DOOR, AIR HANDLERS, AND JUNCTION BOXES ARE CORRECTLY SHOWN ON

INSTALLATION ON A TYPICAL SHELTER. LOCATIONS OF SHELTER FEATURES SUCH

THIS DRAWING SHOWS THE LIGHTNING PROTECTION SYSTEM WITH RESPECT TO

DETAILS.

SEE DWG E006 FOR GROUNDING PLATE ASSEMBLY, INSTALLATION, AND CONNECTION

TO CONDUIT AND PERIMETER GROUNDING CONDUCTOR WITH EXOTHERMIC WELDS.

PERIMETER GROUNDING WIRE USING 2 AWG BARE COPPER GROUND WIRE CONNECTED

EXOTHERMIC WELD. CONTINUOUS METALLIC CONDUITS SHALL BE BONDED TO

BUSHING AND CONNECTED TO THE PERIMETER GROUNDING CONDUCTOR WITH AN

A 2 AWG BARE COPPER BONDING WIRE SHALL BE CONNECTED TO GROUNDING

GROUNDING BUSHINGS SHALL BE INSTALLED AT ENDS OF METALLIC CONDUITS.

THE ANTENNA TOWER. BOND EXTERIOR METAL OBJECTS AS DESCRIBED ABOVE.

THE LIGHTNING PROTECTION COVERAGE PROVIDED BY THE AIR TERMINAL ON

CONDUCTORS ARE NOT REQUIRED FOR A GLIDE SLOPE SHELTER BECAUSE OF

EITHER SIDE OF THE ASSOCIATED STRUCTURE. AIR TERMINALS AND DOWN

SHALL CONNECT TO TWO ADDITIONAL GROUNDING ELECTRODES PLACED ON

GROUNDING CONDUCTOR SHALL EXTEND AROUND THE ANTENNA TOWER AND

FOR A GLIDE SLOPE FACILITY, THE 4/0 AWG BARE COPPER PERIMETER

SHALL BE BENT TO LESS THAN A 90° ANGLE.

NO CONDUCTOR SHALL BE BENT TO LESS THAN AN 8" RADIUS NOR

DOWN CONDUCTORS WITH 6 AWG BARE MINIMUM.

JUNCTION BOXES, AND ANY MISCELLANEOUS EXTERIOR METAL OBJECTS TO

BOND A/C, VENT FAN, HOOD, FLIGHT CHECK ANTENNA MAST, DOOR FRAME,

SHALL BE ALUMINUM.

ALL CLAMPS, BONDING DEVICES, DOWN CONDUCTORS, AND STRAPS

AND AS NOTED BELOW.

TO COMPLETE THE LIGHTNING PROTECTION SYSTEM SHOWN ON THIS SHEET

CONTRACTOR SHALL FURNISH AND INSTALL LIGHTNING PROTECTION ITEMS

9.