ord-d-gs09r-c005.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

CONTRACTOR FURNISHED

OBSTRUCTION LIGHT

S

E

N O

T E

S

T E

S

T E

BRACKET C

ANTENNA

CROSS-BRACE

ANTENNA TOWER

SEE NOTE 2.

5’ ORANGE TOP SECTION.

SEE NOTE 2.

5’ ORANGE SECTION.

SECTION. SEE NOTE 2.

20’ ORANGE/WHITE

SEE NOTE 1.

PER DETAIL "3" (TYPICAL).

TOWER LEG CONNECTION

AIR TERMINAL

CABLE CONDUIT

POWER AND SIGNAL

REINFORCED CONCRETE FOUNDATION

CLAMPS.

LEGS CONNECTED TO LOOP WITH PARALLEL

AND INSTALL TWO DOWN CONDUCTORS ON SPARATE

AT TOP OF TOWER, CONNECT TO AIR TERMINAL,

CLASS II DOWN CONDUCTOR, FORM CLOSED LOOP

BOTTOM. SEE NOTE 2.

SECTION W/ORANGE ON

20’ ORANGE/WHITE TOWER

WITH LADDER)

HARDWARE FURNISHED

(TYPICAL, ATTACHING

1/2" U-BOLT

CONNECTORS PER SPECIFICATIONS.

GROUND WIRE WITH CRIMPED

SECTIONS USING 6 AWG INSULATED

WITH ANTENNA TOWER). BOND LADDER

GALVANIZED STEEL LADDER (FURNISHED

WITH ANTENNA TOWER)

LADDER (FURNISHED

GALVANIZED STEEL

WITH LADDER)

HARDWARE FURNISHED

(TYPICAL, ATTACHING

1/2" U-BOLT

CROSS-BRACE

ANTENNA TOWER

T

Y P

IC

A L

3/8"-16 X 1 1/2" S.S. HEX BOLT

LOCK CHANNEL (TYPICAL)

ANTENNA MOUNTING CHANNEL

3/8" S.S. LOCK WASHER

3/8"-16 S.S. HEX NUT

FRAME SECTION

ANTENNA MOUNTING

WASHER

3/8" S.S. LOCK

HEX NUT

3/8"-16 S.S.

PER NOTE 3

GROUNDING LUG

GROUNDING WIRE

6 AWG BARE COPPER

ANTENNA MOUNTING BRACKET

ARE FURNISHED BY FAA)

AND ATTACHING HARDWARE

MOUNTING FRAMES,

(TYPICAL OF THREE,

ANTENNA ELEMENT

(TYPICAL)

ANTENNA TOWER LEG

SEE NOTE 3.

GROUNDING CLAMP.

OF TWO PER LEG)

3/8"-16 (TYPICAL

3" U-BOLT CLAMP,

ANTENNA MOUNTING CHANNEL

OF TWO PER LEG)

SUPPORT ANGLE (TYPICAL

3/8" S.S. LOCK WASHER

3/8"-16 S.S. HEX NUT

L

NOT TO SCALE

DETAIL

NOT TO SCALE

DETAIL

ELEVATION

NOT TO SCALE

DETAIL

50’ GLIDE SLOPE ANTENNA TOWER

NOT TO SCALE

DETAIL

ANTENNA TOWER CROSS-BRACE

ELEVATION

LADDER ATTACHMENT TO ANTENNA TOWER

NOT TO SCALE

DETAIL

PLAN

NOT TO SCALE

DETAIL

FALL ARRESTER

TOWER LEG

HEX BOLT (TYPICAL)

7/8"-9 X 2 1/2"

ANTENNA MOUNTING FRAME

GALVANIZED LOCK WASHER

GALVANIZED 7/8"-9 HEX NUT

TOWER LEG

SEE NOTE 1

TOWER LEG

MOUNTING DETAILS.

OF 3). SEE DETAIL "2" FOR

ANTENNA ELEMENT (TYPICAL

AND ANTENNA TOWER CONNECTIONS

ANTENNA ELEMENT MOUNTING BRACKET

OSHA TIE-OFF POINTSTOWER LEG CONNECTION

LOCATIONS (TYP 3)

AT ANTENNA BRACKET

TOWER LEG APPROXIMATELY

SECURE TIE-OFF TO

TIE-OFF POINTS.

P/N 506277

MSA DYNA-GLIDE

FALL ARRESTER

NO SUBSTITUTIONS. SEE NOTE 4

NOTCHED RAIL, P/N 506270.

MSA DYNA-GLIDE GALVANIZED

SAFETY CLIMB RAIL SYSTEM

DYNA-GLIDE GALVANIZED

CLIMB RAIL, MSA

GALVANIZED SAFETY

SEE NOTE 3

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5.

NOTES:

11.

12.

13.

SPECIFICATION GL-D-918D.

THIS SHALL BE ACCOMPLISHED PER PARAGRAPH 28 OF THE SPECIAL SPECIFICATIONS AS WELL AS SECTION 9A OF

THE GLIDE SLOPE ANTENNA MASTS ARE GOVERNMENT-FURNISHED AND NEED TO BE REPAINTED PRIOR TO ERECTION.

IF THEY DIFFER FROM PLAN

PLACE TIE-OFF POINTS AT ANTENNA ELEVATIONS. VERIFY WITH FAA DISTRICT EOSH PERSONNEL ON LOCATION

TORQUE VALVES ARE PER NORMAL PUBLISHED STANDARD VALUES FOR THE SIZED NUT/BOLT COMBINATION.

ASSEMBLIES.

THE FAA SSC AND INSTALL THE DYNA-GLIDE CLIMB SYSTEM. THE CONTRACTOR ALSO INSTALL AND SUPPLY OSHA TIE-OFF HARDWARE

A SAFETY CLIMBING SYSTEM WITH A ROUND NOTCHED BAR ARE SHIPPED WITH THE ANTENNA TOWER. DELIVER THESE PARTS TO

THE CONTRACTOR MUST MAKE THE NECESSARY TOWER HEIGHT ADJUSTMENT TO FLIGHT CHECK AS DIRECTED BY THE FAA.

CLIMBING SYSTEM. NO SUBSTITUTIONS. SEE SHEET ORD-D-GS09C-C005-1.

CONTRACTOR INSTALL LADDER CLIMBING SAFETY SYSTEM. LADDER CLIMBING SYSTEM IS DYNA-GLIDE

AND INSTALL GS ANTENNA COAXIAL CABLES. ALL OTHER ITEMS SHOWN HERE BY CONTRACTOR UNLESS OTHERWISE NOTED.

FAA TO FURNISH AND CONTRACTOR INSTALL GLIDE SLOPE TOWER, ANTENNAS, AND ANTENNA MOUNTING KITS. FAA TO FURNISH

TO THE CENTER OF THE ANTENNA. THE LADDER POSITION WAS BE APPROVED BY THE FAA PRIOR TO INSTALLATION.

THE RUNWAY THRESHOLD. LADDER WAS INSTALLED CLOSER TO THE READ LEG OF ANTENNA MAST TO ALLOW ACCESS

INSTRUCTED BY FAA. THE LADDER WAS INSTALL ON THE RIGHT SIDE OF THE ANTENNA TOWER WHEN LOOKING TOWARD

THE CONTRACTOR MUST USE OFFSET BRACKETS IN PLACE OF U-BOLT ASSEMBLIES ON THE ANTENNA, FOUR PER ANTENNA IF

THE CONTRACTOR SHALL RE-PAINT ANY AREAS DAMAGED DURING CONSTRUCTION, SHIPPING, ETC.

THE CONTRACTOR SHALL PROVIDE AN LED OBSTRUCTION LIGHT TO REPLACE THE GFM INCANDESCENT TYPE PROVIDED WITH TOWER.

SEE THE GOVERNMENT-FURNISHED PROPERTY LIST FOR ITEMS PROVIDED BY THE FAA, ALSO SEE DWG. OED-D-GS09R-C005-1

AND 6 AWG BARE COPPER GROUNDING WIRE. CONNECT 6 AWG BARE TO ANTENNA TOWER STRUCTURE USING GROUNDING CLAMP.

FIELD-DRILL 3/8" DIAM. HOLE IN ANTENNA MOUNTING FRAME, SCRAPE PAINT FROM BONDING AREA AND INSTALL GROUNDING LUG

ORIGIN. ALL BARE METAL SHALL BE TREATED WITH ZRC GALVILITE GALVANIZING REPAIR COMPOUND.

CONDUCTOR, AND OBSTRUCTION LIGHT TO TOP OF SHORTENED TOWER. NON-CONTINUOUS CROSS-BRACING SHALL BE CUT AT ITS

CONTRACTOR TO CUT ANTENNA TOWER STRUCTURE, LADDER, AND SAFETY CLIMBING SYSTEM AND RELOCATE AIR TERMINAL, DOWN

SHORTEN THE TOWER TO 5’’-0" MAXIMUM HEIGHT ABOVE CENTERLINE OF TOP ANTENNA ELEMENT. THIS WILL REQUIRE THE

5’-0" BELOW TOP OF TOWER, TOWER MUST BE SHORTENED. CONTRACTOR SHOULD INCLUDE COSTS TO RETURN TO THE SITE AND

BE ADJUSTED BY FAA INSTALLATION PERSONNEL TO ACHIEVE BEST SIGNAL GENERATION. IF TOP ANTENNA ELEMENT IS MORE THAN

MATCHED THE ANTENNA HEIGHTS WITH THE ADJACENT GLIDE SLOPE TOWER ANTENNA HEIGHTS. ANTENNA ELEMENT LOCATIONS WILL

WITH ELEMENT CENTERED ON THE MOUNTING BRACKETS AT THE DESIGN HEIGHTS PROVIDE BY THE ELECTRONICS ENGINEER.

THE TOWER IS PLUMB. CONTRACTOR SHALL INSTALL ANTENNA MOUNTING BRACKET AND ELEMENT ASSEMBLIES (3 REQUIRED)

CONTRACTOR SHALL ERECT TOWER WITH ALTERNATING ORANGE AND WHITE COLORED SECTIONS TO FULL 50’ HEIGHT. VERIFY THAT

FOR ELECTRICAL CONTINUITY BETWEEN THE TOWER SECTIONS.

CONTRACTOR SHALL TACK-WELD THE BOLTED CONNECTIONS ON ANTENNA TOWER LEG TO WHICH GROUNDING ASSEMBLY IS ATTACHED

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10/31/2019 1898272

ORD-D-GS09R-C005

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ENGINEERING SERVICES

GS

GLIDE SLOPE - RUNWAY 9R

CHICAGO O’HARE INTERNATIONAL AIRPORTCHICAGO

PROJECT ENGINEER MGR: ENGINEERING

o rd -d -g s r-c .d g n

THIS DRAWING PRODUCED ON THE AGL REGION MICROSTATION SYSTEM

ATO - TECHNICAL OPERATIONS CENTRAL SERVICE AREA

ANTENNA TOWER ASSEMBLY DETAILS