Amendment 0004 - CAP-129_M-102.pdf

2"

"7

2"

1' - 7"

2' - 7"

9 1/2"

1' - 9"

4'-7"

1 2

1 3/16"

3/4"

1/2" EX.

1' - 9"

1 3/16"

3/4"

1/2" EX.

R

A

D

D

1'-1"

3" 3"

1 1/2"

4 1/4"

1 1/2"

4 1/4"

1 1/2"

7"

1/8" 1/8"1'-0 3/4"

1'-1"

FACED

3'-3"

4 11/16"

" EXACT

1'-0 11/16"

4 11/16"

" EXACT

1'-0 11/16"

1' -

" EXACT.

1'-7 1/2" 1'-7 1/2"

EXACT.

EXACT.

PC-C

F

I

L

L

E

T

PC-A

PC-D

PC-D

PC-B

PC-C

PC-D

PC-B

PC-C

CENTERING CASTING

EXISTING TO REMAIN

CENTERING CASTING

EXISTING TO REMAIN

CENTERING CASTING

EXISTING TO REMAIN

CENTERING CASTING

EXISTING TO REMAIN

2" (PC-C)

2 1/4" (PC-D)

WEAR PLATE REPLACEMENT - CENTERING CASTING ASSEMBLIES

REFER TO SPECIFICATION SECTION 05 50 15 FOR ADDITIONAL DETAILS.

1. PRIOR TO ANY WORK BEING PERFORMED IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO CONFIRM ALL EXISTING

CONDITIONS INCLUDING DIMENSIONS AND CONSTRUCTED COMPONENTS OF THE CURRENTLY INSTALLED ITEMS TO BE

REPLACED. CONTRACTOR IS TO DEVELOP A WORK PLAN FOR EACH SCOPE ELEMENT INCLUDING MEANS AND METHODS, WORK

SCHEDULE, AND PROPOSED ACCEPTANCE TESTING TO COR FOR COMMENT AND APPROVAL.

2. REPLACE VERTICAL STEEL WEAR PLATES ON CENTERING CASTINGS FOR BOTH TOP AND BOTTOM CASTINGS. BOTTOM CASTING

IS ATTACHED TO PIER. TOP CASTING IS ATTACHED TO UNDER SIDE OF BRIDGE SPAN. BOTH THE NORTH AND SOUTH ENDS OF

THE SPAN HAVE IDENTICAL UPPER AND LOWER STEEL CENTERING CASTINGS.

2.1. REMOVE EXISTING WEAR PLATES FROM CENTERING CASTINGS. EXISTING FASTENERS MAY BE DAMAGED OR UNABLE TO

BE UNSCREWED FROM CASTING AND REQUIRE ADDITIONAL MEANS FOR EXTRACTION. REPAIR ALL THREADING FOR

CASTING FASTENER RECEIVING LOCATIONS AS NEEDED.

2.2. SCRAPE, CLEAN, AND APPLY A PROTECTIVE COAT OF ANTI-CORROSION PAINT TO ALL NEWLY EXPOSED SURFACES ON

CASTING MATING SURFACE.

2.3. INSTALL NEW WEAR PLATES WITH NEW FASTENERS AS SPECIFIED. CONFIRM NEW WEAR PLATES INSTALL PROPERLY WITH

SMOOTH CONNECTIONS TO CASTING AND NO RAISED/DEPRESSED SURFACES OR GAPS ARE PRESENT. CONTRACTOR TO

APPLY NEW OPERATING LUBRICATION (GOVERNMENT SUPPLIED) TO CENTERING CASTING ASSEMBLY AS DIRECTED BY

BRIDGE OPERATING PERSONNEL.

3. CONDUCT ACCEPTANCE TESTING OF THE NEW WEAR PLATES TO CONFIRM APPROPRIATE FIT AND ALIGNMENT DURING RAISING

AND LOWERING OPERATION. ACCEPTANCE TESTING FOR WEAR PLATES TO CONSIST OF COMPLETING 3 FULL

SEATING/UNSEATING CYCLES OF RAISING AND LOWERING OF THE SPAN. DURING TESTING, CONFIRM PROPER NORMAL

OPERATION OF CENTERING CASTINGS AND THAT ALL COMPONENTS ARE IN PROPER ALIGNMENT. CONFIRM RAILROAD TRACKS

ARE IN ALIGNED POSITIONS WHILE IN THE SEATED POSITION WITH NO RUBBING/GRINDING DURING RAISING OR LOWERING.

CONTRACTING REPRESENTATIVE IS REQUIRED TO BE PRESENT FOR THE ACCEPTANCE TESTING. PERFORM ACCEPTANCE

TESTING FOR BOTH CENTERING CASTINGS. DEVELOP AN ACCEPTANCE TESTING REPORT DOCUMENTING THE SUMMARY OF

THE PROCESS AND RESULTS AND DELIVER TO THE CONTRACTING OFFICER'S REPRESENTATIVE FOR REVIEW AND APPROVAL.

COMPONENT DESCRIPTION

9" x 1 1/4" x 3/4" x 1' - 3/4" STEEL WEAR PLATE

9" x 1 1/4" x 3/4" x 1' - 7" STEEL WEAR PLATE

1" CTSK. HD TAP BOLTS 2"

1" CTSK. HD TAP BOLTS 2 1/4"

QUANTITY*

LOCATION

TOP CENTERING CASTING

BOTTOM CENTERING CASTING

TOP (2 BOLTS) / BOTTOM CENTERING CASTING (3 BOLTS)

TOP (2 BOLTS) / BOTTOM CENTERING CASTING (3 BOLTS)

PIECE

PC-A

PC-B

PC-C

PC-D

*ALL QUANTITIES HAVE BEEN DOUBLED TO ACCOUNT FOR REPLACING PLATES AND FASTENERS ON BOTH THE NORTH AND

SOUTH ENDS OF THE SPAN.

B

M-102

W E

P

L A

T E

N

O T

E S

A N

D

C

E N

T E

R

C

A S

T I N

G

D

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A I L S

J

N

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M A

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H

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H I R

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M A

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I O

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N

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S I G

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B

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R I P

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N

M A

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S I Z

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B M

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B

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C O

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C H

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B

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B

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S U

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SHEET ID

G

2 3 4 5 6 7 8 9 10

F

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C

B

A

US Army Corps of Engineers

U S

A

R M

Y

C

O R

S

F

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I N

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R S

N E

W

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V

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A L E

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L I F

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W W

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P

F I N A L

E2

STEEL CENTERING CASTING ASSEMBLY - TOP (FS5)

SCALE: NTS

TOP VIEW END VIEW

FRONT VIEW END VIEW

B1

STEEL CENTERING CASTING ASSEMBLY - BOTTOM (FS6)

SCALE: NTS

B8

SCALE: NTS

1" TAP BOLT (MK-C,D)

1" TAP BOLTS TO FASTEN SILICON STEEL PLATES TO

CASTINGS. COUNTERSINK HEADS OF TAP BOLTS

" BACK

OF SURFACE FOR ALL PLATES.

(CONFIRM THREAD DESIGN MATCHES EXISTING BOLTS

AND IS COMPATIBLE WITH THE EXISTING TAPS.)

1. REFER TO GENERAL MECHANICAL NOTES ON SHEET M-101

SHEET NOTES

E

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N

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