04 - Structures - Mast Arms.pdf

BEEN PERSONALLY CHECKED BY THE UNDERSIGNED.

NOT TO BE CONSTRUED TO MEAN THAT ALL ASPECTS OF THE DESIGN HAVE

THE DESIGN APPEARS TO CONFORM TO APPLICABLE CRITERIA. APPROVAL IS

TRANSPORTATION PRINCIPAL ENGINEER

STEEL MAST ARM ASSEMBLY FOUNDATION DETAILSMA-4

STEEL MAST ARM ASSEMBLY DETAILSMA-3

STEEL MAST ARM ASSEMBLY ELEVATIONMA-2

INDEX OF DRAWINGSMA-1

DRAWING TITLEDRAWING NUMBERDRAWING TITLEDRAWING NUMBER

INDEX OF DRAWINGS

- STRUCTURES - MAST ARMS

PROJECT TITLE: PROJECT NO.: DRAWING NO.:

SHEET NO.:

9/17/2024

SIGNATURE BLOCK: DRAWING TITLE:

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DESIGNER/DRAFTER: CHECKED BY:

INDEX OF DRAWINGS

TRANSPORTATION

DEPARTMENT OF

CONNECTICUT

K. GUTHRIE K. BROWN

INSTALLATION AND REVISION OF TRAFFIC

CONTROL SIGNALS IN DISTRICT 1

0171-0504BRISTOL, NEW BRITAIN & VERNON

04.01 D. TOMPKINS

LEVEL

3° TO 5°

3° TO 5°

OF THE POLE SHALL BE PLUMB.THE

OF THE TRAFFIC APPURTENANCES

OF POLE. AFTER THE INSTALLATION

OF THE POLE SHALL BE PLUMB. THE

OF THE TRAFFIC APPURTENANCES

OF POLE. AFTER THE INSTALLATION

M

IN

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IC

A L C

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A R

A N

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A X

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A L

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BACKPLATE (TYP.)

� OF TAPERED ARM

TOP OF ROADWAY

� OF TAPERED LUMINAIRE ARM

SIGNAL (TYP.)

TRAFFIC APPURTENANCE

BOTTOM OF

ARM CAP PLATE

3 - 2" Ø CONDUIT SWEEPS.

SIGNAL CONTROL PLANS. MINIMUM OF

NUMBER AND SIZE AS SHOWN ON TRAFFIC

ACCOMMODATE RIGID METAL CONDUITS,

BASEPLATE SHALL BE FABRICATED TO

3 - 2" Ø CONDUIT SWEEPS.

SIGNAL CONTROL PLANS. MINIMUM OF

NUMBER AND SIZE AS SHOWN ON TRAFFIC

ACCOMMODATE RIGID METAL CONDUITS,

BASEPLATE SHALL BE FABRICATED TO

A R

M A

T T

A C

H M

E N

T H

E

IG

H T

P O

L E

L E

N G

T H

ARM LENGTH

A R

M A

T T

A C

H M

E N

T H

E

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P O

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L E

N G

T H

L U

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H E

IG

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T

LUMINAIRE ARM LENGTH

1'-0"

THREADED PLUG

2" COUPLING WITH

INSTALL IDENTIFICATION TAG

BY THE CONTRACTOR

SHALL BE DETERMINED

UNLOADED POLE RAKE

AND SUPPORT

FOR WIRE HANDLING

TO INSIDE OF POLE

J-HOOK WELDED

INSTALL IDENTIFICATION TAG

AND SUPPORT

OF POLE FOR WIRE HANDLING

J-HOOK WELDED TO INSIDE

COMPOSED OF TWO MEMBERS

ON OUTER MEMBER OF ARMS

INSTALL IDENTIFICATION TAG OR STAMP

NEOPRENE GASKET

SEALED WITH

POLE CAP PLATE

WORD "UP" LOCATED HERE

ERECT ARM WITH THE

MAST ARM IDENTIFICATION NUMBER

STENCIL LAST CHARACTER OF

STAINLESS STEEL SCREWS (TYP.)

TO POLE OR BASEPLATE WITH

ANCHOR BOLT COVER. ATTACH

STAINLESS STEEL SCREWS (TYP.)

TO POLE OR BASEPLATE WITH

ANCHOR BOLT COVER. ATTACH

MAST ARM IDENTIFICATION NUMBER

STENCIL LAST CHARACTER OF

MAST ARM ELEVATION

ADDITIONAL DETAILS SEE

OF TAPERED ARM. FOR

PREVENT THE INTRUSION OF WATER.

CONNECTION SHALL BE DESIGNED TO

TO BE DESIGNED BY THE CONTRACTOR.

LUMINAIRE ARM TO POLE CONNECTION

FOR DETAILS

SEE DRAWING NO. MA-4

FOUNDATION

FOR DETAILS

SEE DRAWING NO. MA-4

FOUNDATION

ANCHORAGE PLATE

ANCHOR BOLTS WITH ANCHORAGE PLATE

ANCHOR BOLTS WITH

FINISHED GRADE, VARIES

FINISHED GRADE, VARIES

TRAFFIC PLANS.

APPURTENANCES WITH PROPERTIES NO LESS THAN THOSE SHOWN ON THE

THE MAST ARM ASSEMBLIES SHALL BE DESIGNED TO SUPPORT TRAFFIC

MAST ARM ASSEMBLY" OR "XX STEEL COMBINATION MAST ARM ASSEMBLY".

INTERIM SPECIFICATIONS, AS AMENDED BY THE SPECIAL PROVISION "XX STEEL

HIGHWAY SIGNS, LUMINAIRES AND TRAFFIC SIGNALS, INCLUDING THE LATEST

EDITION OF THE AASHTO LRFD SPECIFICATIONS FOR STRUCTURAL SUPPORTS FOR

THE MAST ARM ASSEMBLIES SHALL BE DESIGNED IN ACCORDANCE WITH THE LATEST

CANNOT BE MET, THE CONTRACTOR SHALL NOTIFY THE ENGINEER.

CLEARANCE REQUIREMENTS IN THE CONTRACT DOCUMENTS. IF THE REQUIREMENTS

THE MAST ARM ASSEMBLY WHEN INSTALLED WILL MEET THE GEOMETRIC AND

DRAWING BASED ON A FIELD SURVEY AND THE CONTRACT DOCUMENTS TO VERIFY

DESIGN OF EACH MAST ARM ASSEMBLY, THE CONTRACTOR SHALL PREPARE A LAYOUT

STRUCTURE ARE SHOWN ON THE TRAFFIC CONTROL SIGNAL PLAN. PRIOR TO

THE LOCATIONS OF THE TRAFFIC APPURTANENCES SUPPORTED BY THE

THE MAST ARM ASSEMBLY, INCLUDING THE ARM SPAN, ARM ORIENTATION, AND

COMBINATION MAST ARM ASSEMBLY".

WITH THE SPECIAL PROVISION "XX STEEL MAST ARM ASSEMBLY" OR "XX STEEL

BE DESIGNED, FABRICATED AND INSTALLED BY THE CONTRACTOR IN ACCORDANCE

THE MAST ARM ASSEMBLY, INCLUDING THE ANCHORAGE TO THE FOUNDATION, SHALL

INSTALL IDENTIFICATION TAG

PERMANENT

ARM CAMBER

6" MIN.

6" MIN.

PERMANENT LUMINAIRE

ARM CAMBER

PROJECT TITLE: PROJECT NO.: DRAWING NO.:

SHEET NO.:

11/18/2025

SIGNATURE BLOCK: DRAWING TITLE:

MA-2

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ASSEMBLY ELEVATION

STEEL MAST ARM

TRANSPORTATION

ON ARMPLATE WHEN STAMPED OPTION IS USED

FOR INNER MAST ARM IDENTIFICATION

ALTERNATE LOCATION

SPLICE OPTIONAL

SLIP TYPE FIELD

ON BASEPLATE WHEN STAMPED OPTION IS USED

FOR MAST ARM IDENTIFICATION

ALTERNATE LOCATION

1'-0"

ON BASEPLATE WHEN STAMPED OPTION IS USED

FOR MAST ARM IDENTIFICATION

ALTERNATE LOCATION

PREVENT THE INTRUSION OF WATER

CONNECTION SHALL BE DESIGNED TO

DESIGNED BY THE CONTRACTOR.

ARM TO POLE CONNECTION TO BE

RING STIFFENED BUILT-UP BOX

NEOPRENE GASKET

SEALED WITH

POLE CAP PLATE

ELEVATION - MAST ARM

/4"=1'-0"1SCALE:

ELEVATION - COMBINATION MAST ARM

/4"=1'-0"1SCALE:

MAST ARM ASSEMBLY NOTES

B

MA-3

B

MA-3

MA-3

C

MA-3

C

60°

HAND HOLE

OF REINFORCED�

HAND HOLE

OF REINFORCED�

A

MA-3

BY THE CONTRACTOR

SHALL BE DETERMINED

UNLOADED POLE RAKE

F

MA-3

F

MA-3

F

MA-3

F

MA-3

SCALE AS NOTED

K. GUTHRIE K. BROWN

INSTALLATION AND REVISION OF TRAFFIC

CONTROL SIGNALS IN DISTRICT 1

04.02 D. TOMPKINS

TUBE MATERIAL STRENGH: IN KSI

ARM LENGTH: IN FEET (METERS)

DATE OF MANUFACTURE: MM/YY

MANUFACTURER:

IDENTIFICATION NUMBER: XXX-XXX-Y

90°

D

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N O

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R A

F F

IC

� OF POLE

D

IR

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N O

F T

R A

F

IC

90°

30°

20°

30°

20°

HAND HOLE LOCATION

ALTERNATE REINFORCED

� OF POLE

STEEL BOLTS

AND COVER WITH STAINLESS

ATTACH CHAIN TO FRAME

� OF POLE

HAND HOLE

REINFORCED

HAND HOLE

REINFORCED

SCALE: 1 1/2" = 1'-0"

SCALE: 3/4" = 1'-0"

SCALE: 3/4" = 1'-0"

VERTICAL

MARKER AT BASE OF ARM

MARK "UP" WITH PERMANENT INK

TOP OF ARM. AFTER GALVANIZING,

HAND HOLE FRAME

NEOPRENE GASKET

HAND HOLE COVER WITH

WELDING STRICTLY PROHIBITED

SCREWS (TYP.)

RESISTANT STAINLESS STEEL

WITH SELF-TAPPING TAMPER

ATTACH TAG TO POLE AND ARM

OF ARM

AND ORIENTATION

OF ARM

AND ORIENTATION

TO POLE CONNECTION (TYP.)

GUSSET PLATE FOR ARM

TO POLE CONNECTION (TYP.)

GUSSET PLATE FOR ARM

STEEL CHAIN

¼" x 1'-6" LONG STAINLESS

½" Ø STAINLESS STEEL BOLT

TO HAND HOLE FRAME WITH

ATTACH GROUNDING CONDUCTOR

INTO BACKFILL.

WITH OPTIONAL ELBOW. OUTLET

2" Ø PVC PIPE WEEPHOLE

OR ARM

AND ORIENTATION

3 - 2" Ø CONDUIT SWEEPS.

SIGNAL CONTROL PLANS. MINIMUM OF

NUMBER AND SIZE AS SHOWN ON TRAFFIC

ACCOMMODATE RIGID METAL CONDUITS,

BASEPLATE SHALL BE FABRICATED TO

ANCHOR BOLT (TYP.)

OVER WEEPHOLE OPENING

GALVANIZED CONCRETE NAILS

MESH ATTACHED WITH 4

23 GAGE GALVANIZED

PLACE 4" X 4" PIECE OF

WITH GROUND CLAMP

BOLT AND TO GROUND ROD

HAND HOLE WITH GROUNDING

GROUNDING CONDUCTOR TO

ATTACH #8 BARE COPPER

TO GROUND ROD WITH GROUND CLAMP

CONDUCTOR TO BONDING BUSHINGS AND

ATTACH #8 BARE COPPER GROUNDING

USED IN LIEU OF THE CLOSED CELL ELASTOMER.

THE FOUNDATION. HAND PACKED GROUT MAY BE

BOTTOM OF THE BASEPLATE AND THE TOP OF

COMPLETELY FILL THE OPENING BETWEEN THE

BELOW BASEPLATE. THE ELASTOMER SHALL

SEAL WITH 1'-1" Ø CONCENTRIC HOLE PLACED

4½" THK. X 1'-6" Ø CLOSED CELL ELASTOMER

OR HAND PACKED GROUT

CLOSED CELL ELASTOMER RING

FOR SEAM WELD

ALLOWABLE LIMITS

FOR SEAM WELD

ALLOWABLE LIMITS

FOR SEAM WELD

ALLOWABLE LIMITS FOR SEAM WELD

ALLOWABLE LIMITS

1" MAX FROM BOTTOM OF NUT

TO TOP OF FOUNDATION

SCALE: 1 1/2" = 1'-0"

SCALE: 1 1/2" = 1'-0"

PROJECT TITLE: PROJECT NO.: DRAWING NO.:

SHEET NO.:

11/18/2025

SIGNATURE BLOCK: DRAWING TITLE:

MA-3

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ASSEMBLY DETAILS

STEEL MAST ARM

TRANSPORTATION

TUBE MATERIAL STRENGH: IN KSI

ARM LENGTH: IN FEET (METERS)

DATE OF MANUFACTURE: MM/YY

MANUFACTURER

IDENTIFICATION NUMBER: XXX-XXX-Y

WALL THK. OF TUBULAR MEMBER

SEALANT AFTER GALVANIZING

CAULK WITH BEAD OF SILICONE

GROUND FLUSH WITH BASE METAL

PENETRATION GROOVE WELD

REQUIRED, SPLICE WITH COMPLETE

CONTINUOUS BACKING RING. IF

UT

CJP

BASEPLATE OR FLANGE PLATE

WITH 2 FLANGE PLATES INTERIOR

POLES AND OVERHEAD MEMBER

DRAIN HOLE, IN FLANGE PLATE OF

" MIN.4

" MIN. (TYP.)4

1" Ø MAX. DRAIN HOLE (TYP.)

BACKING RING

TUBULAR MEMBER

FILLET WELD TOE

HANGING DIRECTION

"8

7LEDGE >

TUBULAR MEMBER FOR VENTING�

HOLE CONCENTRIC ABOUT

G

TRANSVERSE PLATE

BOLT CIRCLE

BOLT HOLE (TYP.)

PLATE

OF TRANSVERSE�

POLE WITH 1 SEAM WELD

POLE WITH 2 SEAM WELD

STRUCTURE IDENTIFICATION - N.T.S

A

MA-2

SECTION

B

MA-2

SECTION

D

SECTION

E

DETAIL

C

MA-2

DETAIL

D

E

OF ARM�

TAG OPTION

STAMPED OPTION

G

SECTION

3"=1'-0"SCALE:

F

MA-2

TRANSVERSE PLATE DETAIL

1 1/2"=1'-0"SCALE:

GALVANIZING

FOR CLEAR VISIBILTY AFTER

" MIN. STAMP DEPTH AS REQUIRED32

" LETTER HEIGHT (TYP.)2

SCALE AS NOTED

K. GUTHRIE K. BROWN

INSTALLATION AND REVISION OF TRAFFIC

CONTROL SIGNALS IN DISTRICT 1

04.03 D. TOMPKINS

A

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EDGE OF SIDEWALK

ANCHOR BOLTS (TYP.)

F O

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G T

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(M

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M S

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P A

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F R

E

IN

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M E

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RIGID METAL CONDUIT (TYP.)

C

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/S P

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G /P

IT

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FOUNDATION DIA.

2'-0"

CLAD STEEL GROUND ROD

COPPER ⅝" x 10'

EARTH FINISHED GRADES

1" X 1" BEVEL WITH

3" COVER

REINFORCEMENT)

(MINIMUM NUMBER AND SIZE OF

16 - #8 EQUALLY SPACED

SPACING/PITCH, MAX.

WHICH SHALL HAVE #4 TIES/SPIRALS @ 4"

EXCLUSIVE TO THE TOP 2' OF FOUNDATION,

OF REINFORCEMENT, SIZE AND SPACING

ALTERNATE TIE SPLICES 180°. TYPICAL MINIMUM

#4 TIES/SPIRALS @ 6" SPACING/PITCH,

ANCHOR BOLT (TYP.)

ANCHOR BOLT (TYP.)

CAP END (TYP.)

THREAD AND

REINFORCEMENT (TYP.).

PLACE TO CLEAR ANCHOR BOLTS AND

MINIMUM OF 3 - 2" Ø CONDUIT SWEEPS.

SHOWN ON TRAFFIC SIGNAL CONTROL PLANS.

RIGID METAL CONDUIT, NUMBER AND SIZE AS

ANCHORAGE PLATE

SIDEWALK

CONCRETE

TOP OF

PROJECTION

ANCHOR BOLT

BUSHING (TYP.)

INSULATING BONDING

SCALE: 3/4" = 1'-0"

FINISHED GRADE VARIES

TOP OF EARTH

AND ORIENTATION OF ARM�

WITH OPTIONAL ELBOW

2" Ø PVC PIPE WEEPHOLE

OF ARM

AND ORIENTATION�

ANCHORAGE PLATE

FOR PAYMENT UNDER THE ITEM "CONCRETE SIDEWALK".

PREFORMED EXPANSION JOINT FILLER AND JOINT SEALANT SHALL BE INCLUDED THE COST OF

TO FOUNDATION INSTALLATION SHALL BE PAID FOR UNDER THE ITEM "CONCRETE SIDEWALK".

OR CUT DURING INSTALLATION, REPLACE THE ENTIRE SECTION. ALL SIDEWALK REPLACED DUE

WHERE AN EXISTING CONCRETE SIDEWALK ABUTTING A FOUNDATION IS DAMAGED

PAYMENT UNDER THE ITEM "TRAFFIC CONTROL FOUNDATION - MAST ARM".

CASING AND WEEPHOLES, INCLUDING THE DESIGN AND FABRICATION, TO BE INCLUDED FOR

REINFORCEMENT, THE COST OF THE FOUNDATION, INCLUDING THE EXCAVATION, CONCRETE,

SHAFT HAS ATTAINED A COMPRESSIVE STRENGTH, f'c, GREATER THAN OR EQUAL TO 4000 PSI.

THE MAST ARM SHALL NOT BE ERECTED ON THE FOUNDATION UNTIL THE CONCRETE IN THE

THE CONCRETE SHALL BE PLACED IN THE EXCAVATION AGAINST UNDISTURBED EARTH.

UNLESS OTHERWISE NOTED.

REINFORCEMENT IS NOT PERMITTED. ALL REINFORCEMENT SHALL HAVE 3" COVER,

THE REINFORCEMENT SHALL BE ASSEMBLED WITH WIRE TIES. WELDING TO ASSEMBLE

THE REINFORCEMENT SHALL BE UNCOATED AND CONFORM TO ASTM A615, GRADE 60.

M.03 - PORTLAND AND HYDRAULIC CEMENT CONCRETE.

SHALL CONFORM TO THE REQUIREMENTS OF 6.01 - CONCRETE FOR STRUCTURES AND

THE COMPRESSIVE STRENGTH OF THE CONCRETE IN THE CONSTRUCTED FOUNDATION

COMPRESSIVE STRENGTH, f'c, USED IN DESIGN OF THE FOUNDATION SHALL BE 4,000 PSI.

THE CONCRETE FOR THE FOUNDATION SHALL CONFORM TO CLASS PCC04460. THE

EMBEDDED MAST ARM ANCHORAGE AND THE FOUNDATION REINFORCEMENT.

ADEQUATE FOR THE MAST ARM REACTIONS AND TO AVOID CONFLICTS BETWEEN THE

ASSEMBLY AND THE MAST ARM ANCHORAGE TO ENSURE THAT THE FOUNDATION IS

THE DESIGN OF THE FOUNDATION SHALL BE COORDINATED WITH THE MAST ARM

EXPLORATIONS AND INVESTIGATIONS SHALL BE DETERMINED BY THE CONTRACTOR.

SHAFT FOUNDATION EXCAVATION. THE NEED AND EXTENT OF ALL SUBSURFACE

GROUND WATER, ETC.) IN THE LOCATION OF, ADJACENT TO AND BELOW THE DRILLED

ON THE SUBSURFACE CONDITIONS (CHARACTER OF THE SOIL AND ROCK, PRESENCE OF

THE FOUNDATION SHALL BE DESIGNED FOR THE SOILS AND ROCK PROPERTIES BASED

SPECIAL PROVISION "TRAFFIC CONTROL FOUNDATION - MAST ARM".

FABRICATED, AND CONSTRUCTED BY THE CONTRACTOR IN ACCORDANCE WITH THE

THE DRILLED SHAFT FOUNDATION FOR THE MAST ARM ASSEMBLY SHALL BE DESIGNED,

2'-0" MINIMUM

BELOW FINISHED GRADE

SIDEWALKS, FOR ACCESS

FACE OR REAR FACE AT

3'-0" MIN., FRONT

8" CONDUIT PROJECTION

TOOLED EDGE ADJACENT TO CONCRETE SIDEWALK

TOPPED WITH JOINT SEALANT

¼" PREFORMED EXPANSION JOINT FILLER

3" PROJECTION ABOVE

SLOPED FINISHED EARTH GRADE

OF ADJACENT SIDEWALK

WITH EARTH BACKFILL, SLOPE TO MATCH CROSS-SLOPE

TOP OF FOUNDATION, LEVEL WHEN SURROUNDED

2'-6" SPLICE ALTERNATE SPLICES

45°

22.5°

SCALE: 3/4" = 1'-0"

3" ABOVE LEVEL FINISHED EARTH GRADE

PROJECT TITLE: PROJECT NO.: DRAWING NO.:

SHEET NO.:

3/28/2025

SIGNATURE BLOCK: DRAWING TITLE:

MA-4

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DESIGNER/DRAFTER: CHECKED BY: DETAILS

ASSEMBLY FOUNDATION

STEEL MAST ARM

TRANSPORTATION

FOUNDATION NOTES

G

F

SECTION

G

SECTION

FOUNDATION DIA.

FOUNDATION DIA.

/4"=1'-0"3SCALE:

FOUNDATION DETAIL

TOP OF ANCHORAGE PLATE

ROUGHEN SURFACE

OPTIONAL CONSTRUCTION JOINT,

SCALE AS NOTED

BOLT CIRCLE DIA.

BOLT CIRCLE DIA.

DIAMETER OF THE POLE AT THE BASE PLUS 6" ± 1"

BOLT CIRCLE DIAMETERS:

4'-0" OTHERWISE

3'-0" FOR MAST ARMS WITH POLE DIAMETERS AT THE BASE LESS THAN OR EQUAL TO 1'-6"

FOUNDATION DIAMETERS:

K. GUTHRIE K. BROWN

INSTALLATION AND REVISION OF TRAFFIC

CONTROL SIGNALS IN DISTRICT 1

04.04 D. TOMPKINS