W911KB25R0018-0004 Attachment Updated Drawings.pdf

PDF 15 MB Posted Apr 21, 2025

Attached to: FLOATING BREAKWATER REPLACEMENT, BAR POINT HARBOR, KETCHIKAN, ALASKA
Solicitation number: W911KB25R0018
Issued by: Department of the Army Corps of Engineers Engineering District Alaska

About this file

Written by GovTribe AI · Apr 21, 2025

These are detailed engineering drawings for the Floating Breakwater Replacement project at Bar Point Harbor in Ketchikan, Alaska, prepared by the U.S. Army Corps of Engineers Alaska District. The drawings specify the replacement of two existing floating breakwaters with new reinforced concrete breakwater structures, including comprehensive details for anchor blocks, chain configurations, and breakwater units. The project involves replacing a 120-foot middle entrance channel breakwater and a 963-foot main harbor breakwater, with new structures to be composed of multiple concrete sections that will be post-tensioned on-site to function as integrated units.

The technical drawings (sheets G-001 through C-501) provide extensive specifications for the new breakwaters, including precise measurements for anchor blocks of varying sizes (ranging from 7'x7'x4' to 18'x18'x5.5'), chain specifications (1-3/8" and 1-1/2" stud link anchor chains), and detailed positioning information. The design includes specific requirements for chain lengths, anchor block elevations, and connection methods, with notes emphasizing that final dimensions may be adjusted based on manufacturer's stability and attenuation analyses. The project is scheduled for implementation in February 2025, with solicitation number W911KB25R0018, and involves comprehensive replacement of existing maritime infrastructure.

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File	Type	Posted
W911KB25R0018-0007.pdf	PDF	Apr 30, 2025
W911KB25R0018-0006.pdf	PDF	Apr 24, 2025
W911KB25R0018_KET005_RFP_DRWGS.pdf	PDF	Apr 21, 2025
W911KB25R0018-0002.pdf	PDF	Apr 21, 2025
W911KB25R0018-0004.pdf	PDF	Apr 21, 2025
W911KB25R0018-0003.pdf	PDF	Apr 21, 2025
W911KB25R0018-0004 Attachment Example high res hydro.pdf	PDF	Apr 21, 2025
W911KB25R0018-0001.pdf	PDF	Apr 21, 2025
W911KB25R0018-0005.pdf	PDF	Apr 21, 2025
W911KB25R0018-0003 Attachment C-101.pdf	PDF	Apr 21, 2025
W911KB25R0018_KET005_RFP_SPECS.pdf	PDF	Apr 21, 2025

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KETCHIKAN ALASKA

SOLICITATION No.: W911KB25R0018

BAR POINT HARBOR

CONTRACT No.: TBD

RFP

US Army Corps of Engineers ® Alaska District

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PROJECT LOCATION MAPB4 SCALE: NTS

PROJECT LOCATIONB8

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ISSUE DATE: FEB 2025

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INDEX

No. SHEET NO. DRAWING TITLE FILE NAME

1 G-001 COVER SHEET KET005-G-001.DWG

2 G-002 INDEX KET005-G-002.DWG

3 G-003 GENERAL NOTES KET005-G-003.DWG

4 G-901 PHOTOS KET005-G-901DWG

5 V-101 EXISTING GENERAL PLAN KET005-V-101.DWG

6 C-101 NEW CONCRETE FLOATING BREAKWATERS PLAN KET005-C-101.DWG

7 C-201 NEW CONCRETE FLOATING BREAKWATERS ELEVATIONS KET005-C-201.DWG

8 C-202 CONCRETE ANCHOR BLOCK DETAILS -1 KET005-S-202.DWG

9 C-203 CONCRETE ANCHOR BLOCK DETAILS -2 KET005-S-203.DWG

10 C-501 CONCRETE FLOATING BREAKWATERS DETAILS KET005-S-501.DWG

11 TO 17 REF SURVEY 2024 REFERENCE

18 TO 27 REF FLOATING BREAKWATER AND BLOCKS AS-BUILT DRAWINGS (1979)

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MATERIALS:

1. CONCRETE TO BE USED FOR THE CONCRETE FLOATING BREAKWATER TO MEET

SPECIFICATION 01 91 41.

2. MINIMUM CONCRETE COVER FOR ANCHOR BLOCKS:

BOTTOM OF ANCHOR BLOCK = 7 INCHES

ELSEWHERE = 3 INCHES

3. CHAINS: STUD LINK ANCHOR CHAIN GRADE 3

1 3/8” CHAIN SIZE, MIN BREAK STRENGTH = 222,000 LBS.

1 1/2” CHAIN SIZE, MIN BREAK STRENGTH = 262,000 LBS.

CHAINS SHOULD BE OF THE MATERIAL AND WEIGHT SPECIFIED. THE LINKS INSIDE

THE ANCHOR BLOCK SHALL BE GALVANIZED. SMALL CHANGES MAY OCCUR IF

CONCRETE FLOATING BREAKWATER DRAFT AND FREEBOARD ARE DIFFERENT

FROM THE DRAWINGS.

GEOTECHICAL STUDY:

GEOTECHNICAL MEMORANDUM BY SHANNON & WILSON DATED OCTOBER 04, 2021.

FRICTION COEFFICIENT SOIL-CONCRETE BLOCK = 0.51 (ASSUMES PRECAST CONCRETE

CONSTRUCTION AND ROUGHEN BOTTOM SURFACE SEE DRAWING SHEET C-202).

SURVEY

1. LOCATION SHOWN ON THESE DRAWINGS FOR THE EXISTING CONCRETE FLOATING

BREAKWATERS, MOORING CHAINS, AND ANCHOR BLOCKS IS BASED IN SURVEY

COMMISSIONED TO ETRAC “SURVEY OF THE BAR POINT HARBOR AREA (ETRAC,

JULY 2024). REFER TO SURVEY DRAWINGS FOR DATUM AND CONTROL POINTS.

2. POST CONSTRUCTION SURVEY LIMITS, ARE SHOWN ON SHEET C-101.

PROJECT PURPOSE:

REPLACEMENT OF TWO CONCRETE FLOATING BREAKWATERS AT BAR

POINT HARBOR LOCATED IN KETCHIKAN, ALASKA.

GENERAL NOTES:

1. CONTRACTOR SHALL EXAMINE THE JOBSITE TO VERIFY ALL PHYSICAL

CONDITIONS, SURROUNDINGS, DIMENSIONS AND DISTANCES.

2. THE CONTRACTOR SHALL BE RESPONSIBLE TO LOCATE AND PROTECT

FROM DAMAGE ALL UTILITIES. THE CONTRACTOR SHALL BE HELD

RESPONSIBLE FOR ANY AND ALL DAMAGES TO EXISTING STRUCTURES

AND UTILITIES DURING CONSTRUCTION. THE CONTRACTOR SHALL

VERIFY THE EXACT LOCATION OF EXISTING UTILITIES AND NOTIFY THE

APPROPRIATE UTILITY COMPANIES AND UNDERGROUND SERVICE

ALERT SUFFICIENTLY IN ADVANCE OF BEGINNING OF WORK. ANY

UTILITIES EXPOSED OR DAMAGED BY THE CONTRACTOR SHALL BE

REPAIRED AT THE CONTRACTOR'S EXPENSE.

3. THE CONTRACTOR SHALL COMPLY WITH ALL PERMITS FOR THE WORK.

THE CONTRACTOR SHALL COMPLY WITH ALL FEDERAL, STATE, AND

LOCAL LAWS AND ORDINANCES RELATING TO SAFETY, CHARACTER

OF WORK, EQUIPMENT AND LABOR PERSONNEL.

4. CONTRACTOR SHALL ENSURE DEBRIS DOES NOT FALL OVERBOARD

INTO THE WATER. NO CONSTRUCTION MATERIALS, EQUIPMENT,

DEBRIS, OR WASTE SHALL BE PLACED OR STORED WHERE IT MAY BE

SUBJECT TO WAVE, WIND, OR RAIN EROSION AND DISPERSION. LOST

DEBRIS SHALL BE RECOVERED.

5. NO STAGING AREA IS PROVIDED. ANY USE OF STAGING AREA(S)

SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR. CONTRACTOR

SHALL COORDINATE WITH THE CITY FOR AVAILABLE LAND TO BE USED

AS STAGING AREA.

6. ALL MATERIALS SHALL BE FURNISHED AND INSTALLED BY THE

CONTRACTOR UNLESS OTHERWISE NOTED.

7. THE ANCHOR SYSTEM DESIGN PRESENTED ON THESE DRAWINGS IS

BASED ON THE CONCRETE FLOATING BREAKWATER DIMENSIONS

SHOWN. IF FLOAT DIMENSIONS ARE WITHIN +/- 5% OF THESE

DIMENSIONS (LENGTH, WIDTH, FREEBOARD, AND DRAFT), SUBMIT

ANCHOR FORCES TO THE GOVERNMENT FOR VERIFICATION. FOR

CONTRACTOR-DESIGNS VARYING ANY OF THESE DIMENSIONS MORE

THAN +/- 5%, THE CONTRACTOR IS REQUIRED TO DESIGN AND

PROVIDE THE ANCHOR SYSTEM. THE CONTRACTOR’S DESIGN MUST

USE A COEFFICIENT OF FRICTION BETWEEN THE CONCRETE ANCHOR

BLOCK AND THE SEABED EQUAL TO 0.51 (PRECAST CONCRETE WITH

ROUGHENED BOTTOM).

8. "MOORING CHAIN" AND "ANCHOR CHAIN" ARE USED

INTERCHANGEABLEY IN THIS DRAWING SET.

DEMOLITION

1. CONTRACTOR SHALL SCHEDULE AND COORDINATE CONSTRUCTION AND

DEMOLITION/REMOVAL WITH THE CONTRACTING OFFICER'S

REPRESENTATIVE.

2. CONTRACTOR TO PREPARE A DEMOLITION PLAN FOR APPROVAL.

3. EXISTING ANCHOR BLOCKS TO BE ABANDONED IN PLACE.

CONCRETE FLOATING BREAKWATER

1. REFER TO PERFORMANCE SPECIFICATION 01 91 41 FOR ALL

REQUIREMENTS.

2. IT IS ANTICIPATED THAT BOTH CONCRETE FLOATING BREAKWATERS ARE

CONSTRUCTED FROM SECTIONS/UNITS AS SHOWN ON THE DRAWINGS.

THE SECTION/UNIT LENGTHS AND CONCRETE FLOATING BREAKWATER

CROSS SECTION CAN VARY AS LONG AS THE PERFORMANCE

REQUIREMENTS ARE MET. CONCRETE FLOATING BREAKWATER

INSTALLATION REQUIRES DISASSEMBLY OF EXISTING CONCRETE

FLOATING BREAKWATER AND IT IS EXPECTED THIS WILL OCCUR DURING

THE SUMMER MONTHS WITH CALM WATERS. THE CONTRACTOR SHALL

COORDINATE WITH THE HARBORMASTER AND THE CONTRACTOR SHALL

PROVIDE TEMPORARY WAVE ATTENUATION DURING CONSTRUCTION. THE

HEIGHT OF THE ATTENUATED WAVES BEHIND THE MAIN CONCRETE

FLOATING BREAKWATER SHALL NOT EXCEED 1.00 FT. AS SHOWN ON

SHEET C-101.

DESIGN REQUIREMENTS

1. CONTRACTOR TO SUBMIT SHOP DRAWINGS AND CALCULATIONS FOR THE

CONCRETE FLOATING BREAKWATERS STAMPED BY A PROFESSIONAL

ENGINEER LICENSED IN THE STATE OF ALASKA.

2. CONTRACTOR SHALL PERFORM AN AS-BUILT SURVEY OF INSTALLED

LOCATION OF ANCHOR BLOCKS AND CONCRETE FLOATING

BREAKWATERS.

TIDAL DATUMS (BASED ON OBSERVATIONS AT STATION NOS 9450460)

MP PC JC J.

DESIGN LOADS

PHOTO 4: WEST END OF EXISTING ENTRANCE BREAKWATER WITH NAVIGATION AIDS PHOTO 5: EAST END OF EXISTING MAIN BREAKWATER WITH NAVIGATION AIDS PHOTO 6:

PHOTO 1: EXISTING MAIN BREAKWATER, VIEW FROM HARBOR TOWARDS AIRPORT PHOTO 2: EXISTING MAIN BREAKWATER, VIEW TOWARDS ADJACENT SHIPPING TERMINAL PHOTO 3: WEST END OF EXISTING MAIN BREAKWATER WITH NAVIGATION AIDS

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NOTES

1. PHOTOS MAY NOT EXHIBIT CURRENT CONDITIONS.

2. CONTRACTOR TO VERIFY CURRENT CONDITIONS.

SURVEY CONTROL DATA

STATION

BAR-2 1972

BAR-4 1972

BPB-2 1998

BPB-3 2001

JULIE 2024

NORTHING

1,289,295.61

1,289,552.31

1,289,530.10

1,289,759.16

1,290,612.66

EASTING

3,099,769.18

3,098,796.18

3,099,011.94

3,099,834.79

3,098,709.88

MLLW

20.94

20.70

19.20

22.89

22.08

DESCRIPTION

3.5 IN DOMED USACE BC

3.25 IN DOMED SBC

PROJECT LIMITS

NUMBER

NORTHING

1,290,823

1,290,809

1,290,336

1,290,032

1,289,350

1,289,228

1,289,751

EASTING

3,097,014

3,097,573

3,098,446

3,098,671

3,098,758

3,098,340

3,097,958

NAVIGATION AIDS

NO.

22200

22205

22210

22215

22220

NORTHING

1,289,300

1,289,467

1,289,700

1,290,074

1,290,545

EASTING

3,099,774

3,099,582

3,098,330

3,098,276

3,097,443

DESCRIPTION

SOUTH ENTRANCE LIGHT 2S FI R 4S

SOUTH ENTRANCE DAYBEACON 3S

ENTRANCE LIGHT 2 FI R 2.5S

ENTRANCE DAYBEACON 3

NORTH ENTRANCE LIGHT 2N FI R 6S

*Benchmarks with coordinate precision of 0.1' were measured by RTK GNSS.

VOLUME COMPUTATIONS

AREA A: SOUTH BASIN MLLW=0 CU. YD.

AVAILABLE TO PROJECT DEPTH (PD) -15.0 1,359

AVAILABLE TO MAX PAY DEPTH (MP) -16.0 2,763

AVAILABLE SIDE SLOPES (SS) AT 3:1 (H:V) & 25' WIDE VARIES 1,199

AREA B: SOUTH BASIN

AVAILABLE TO PD -10.0 3,173

AVAILABLE TO MP -11.0 4,499

AVAILABLE SS AT 3:1 (H:V) & 25' WIDE VARIES 3,557

TOTAL MAXIMUM VOLUME AVAILABLE (MP + SS) 12,018

NOTES

1. PRIMARY PROJECT HORIZONTAL CONTROL IS ALASKA STATE PLANE, ZONE 1, NAD83 (CORS96)

2002.00, IN US SURVEY FEET BASED ON A FULLY CONSTRAINED STATIC GPS NETWORK

HOLDING THE PUBLISHED NAD83 (CORS96) 2002.00 EPOCH VALUES OF NGS CORS STATIONS:

"ANNETTE ISLAND 5 CORS ARP" (AIS5 - PID DK6482); "KLAWOCKAIRAK2006 CORS ARP" (AB49 -

PID DM7451) AND "LEVEL ISLAND 6 CORS ARP" (LEV6 - PID DJ3035).

LOCAL PROJECT HORIZONTAL CONTROL IS ALASKA STATE PLANE, ZONE 1, NAD83 (2011)

EPOCH 2010.00, IN US SURVEY FEET HOLDING DOMED BC "BM NO 37" (VM# 1170 / PID AI4914)

AS 1,284,196.59', E 3,110,894.96'.

2. VERTICAL CONTROL IS MEAN LOWER LOW WATER (MLLW=0.0'), BASED ON THE NOAA/NOS

TIDAL BENCHMARK LIST: "945 0460 KETCHIKAN, TONGASS NARROWS, ALASKA " PUBLISHED

09/27/2011. THIS TIDAL DATUM IS BASED ON THE 1983-2001 TIDAL EPOCH AND IS REFERENCED BY HOLDING NOAA/NOS TIDAL BENCHMARK "BM NO 37" (VM# 1170 / PID AI4914) AS AS 35.09'.

3. VERTICAL TIES TO THE NATIONAL SPATIAL REFERENCE SYSTEM ARE BASED ON PUBLISHED

NAVD88 ELEVATIONS HOLDING NOAA/USACE TIDAL BENCHMARK "BM NO 37" (PID AI4914 / VM#

1170) AS 31.43’.

4. SOUNDINGS ARE IN U.S. SURVEY FEET AND ARE MINUS UNLESS OTHERWISE INDICATED.

5. BATHYMETRY WAS COLLECTED JULY 12-14, 2024. SOUNDINGS WERE COLLECTED USING AN

R2SONIC 2020 MULTIBEAM ECHOSOUNDER OPERATING AT 400 KHZ. SOUND VELOCITY

THOUGH THE WATER COLUMN WAS DETERMINED WITH AN AML BASE X SOUND VELOCITY

PROBE. POSITION AND VESSEL ORIENTATION WERE MEASURED USING AN APPLANIX POSMV

WAVEMASTER V5 SYSTEM RECEIVING RTK CORRECTIONS FROM A TRIMBLE R10 GPS

RECEIVER. DATA WAS COLLECTED AND PROCESSED USING QINSY 9.6.0 AND QIMERA 2.6.2

SOFTWARE. HORIZONTAL CONTROL WAS VERIFIED USING RTK GNSS EQUIPMENT AND

TECHNIQUES. VERTICAL CONTROL WAS SURVEYED USING DIFFERENTIAL LEVELING

TECHNIQUES.

6. TERRESTIAL LASER SCANNING DATA WAS COLLECTED JULY 13-14, 2024. DATA WAS

COLLECTED USING A RIEGL VZ400 LASER SCANNER AND PROCESSED USING QINSY 9.6.0 AND

QIMERA 2.6.2 SOFTWARE. POSITION AND VESSEL ORIENTATION WERE MEASURED USING AN

APPLANIX POSMV WAVEMASTER V5 SYSTEM.

7. THIS DRAWING INDICATES GENERAL CONDITIONS AT THE TIME OF THE SURVEY.

8. MAP SOUNDINGS ARE BINNED AT 24 FEET AND ARE SHOAL-BIASED. CONTOURS ARE BASED

ON 12 FEET BINNED SHOAL-BIASED SOUNDINGS. VOLUME SOUNDINGS ARE BINNED AT 3 FEET

AND ARE MEAN VALUE SOUNDINGS.

9PL NO

PL NO

1,290,193 3,097,209

1,290,569 3,097,014

E 3, 8, E 3, 8, E 3, 8, E 3, 8, N 1,289,500

AREA A: SOUTH BASIN

-11

-5

-15

-20

-25

-30

-17

-15

-20

-16

-25

-30

-35

-10

-5

-70

-60

-50

-30

-20

-10

-10 -15

-20 -30 -35

-40

-3

ANCH-16

ANCH-1

ANCH-2

ANCH-3

ANCH-4

ANCH-5

ANCH-6

ANCH-7

ANCH-8

ANCH-9

ANCH-10

ANCH-11

ANCH-12

ANCH-13

ANCH-14

ANCH-15

ANCH-17

ANCH-18

ANCH-19

ANCH-20

ANCH-21

ANCH-22 ANCH-23

ANCH-24

ANCH-25

ANCH-26

ANCH-27

ANCH-28

ANCH-29

ANCH-30

ANCH-31

ANCH-32

ANCH-33

ANCH-34

ANCH-35

ANCH-36

ANCH-37

ANCH-38

ANCH-39

-10

-40

OH/E

O H

/E O

H /E

O H

/E O

H /E

O H

/E O

H /E

BAR-4 1972

BPB-2 1998

JULIE 2024

E 3, 7, E 3, 8, E 3, 8, E 3, 9, N 1,290,000

N 1,290,500

E 3, 7, E 3, 8, E 3, 8, E 3, 9, 22210

22220

22215

N 1,289,500

E 3, 8, E 3, 9, E 3, 8, E 3, 9, -40

-120

-115

-110

-105

-100

-95

-90

-85 -80

-75 -70

-65

-60 -55-50 -45

-40 -35

-30 -25

-20 -15 -10 -5

-115

-110

-105

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

GRAPHIC SCALE IN FEET

0 300200100 10050

PL NO 5

PL NO 6

PL NO 4

PL NO 7

PL NO 8

PL NO 9

PL NO 2

PL NO 3

PL NO 1

PROJECT LIMITS

TONGASS NARROWS

HARBOR

K E

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- M

V-101

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.te tra te ch

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MP PC JC J.

FLOATING BREAKWATER ANCHORS

ANCH-1

ANCH-2

ANCH-3

ANCH-4

ANCH-5

ANCH-6

ANCH-7

ANCH-8

ANCH-9

ANCH-10

ANCH-11

ANCH-12

ANCH-13

ANCH-14

ANCH-15

ANCH-16

ANCH-17

ANCH-18

ANCH-19

ANCH-20

NORTHING

1,289,495.3

1,289,478.9

1,289,701.7

1,289,859.5

1,289,880.3

1,289,950.4

1,289,886.6

1,289,949.0

1,289,977.8

1,290,012.3

1,290,035.7

1,290,069.4

1,290,097.0

1,290,128.7

1,290,156.5

1,290,191.7

1,290,216.6

1,290,246.9

1,290,268.4

1,290,308.8

EASTING

3,098,534.2

3,098,475.2

3,098,286.4

3,098,339.2

3,098,390.5

3,098,478.9

3,098,142.0

3,098,039.0

3,097,991.8

3,097,938.0

3,097,883.0

3,097,827.1

3,097,779.4

3,097,724.7

3,097,675.5

3,097,621.7

3,097,572.0

3,097,515.0

3,097,466.4

3,097,411.6

DEPTH

-48.7

-61.0

-73.3

-47.8

-36.1

-37.6

-79.8

-89.9

-92.3

-95.1

-96.1

-97.1

-98.5

-99.7

-100.5

-100.3

-101.4

-101.7

-102.7

-99.7

APPROX SIZE (FEET)

ANCHOR 14X14X5

ANCH-21

ANCH-22

ANCH-23

ANCH-24

ANCH-25

ANCH-26

ANCH-27

ANCH-28

ANCH-29

ANCH-30

ANCH-31

ANCH-32

ANCH-33

ANCH-34

ANCH-35

ANCH-36

ANCH-37

ANCH-38

ANCH-39

NORTHING

1,290,334.9

1,290,617.0

1,290,606.8

1,290,587.1

1,290,549.0

1,290,534.4

1,290,502.1

1,290,475.4

1,290,443.3

1,290,416.2

1,290,383.4

1,290,354.1

1,290,325.4

1,290,295.7

1,290,261.6

1,290,238.1

1,290,205.1

1,290,177.4

1,289,905.6

EASTING

3,097,365.2

3,097,218.9

3,097,520.7

3,097,573.1

3,097,625.4

3,097,681.8

3,097,733.3

3,097,785.8

3,097,841.2

3,097,891.5

3,097,944.9

3,097,996.1

3,098,049.2

3,098,099.7

3,098,153.3

3,098,203.5

3,098,258.5

3,098,310.0

3,098,091.9

DEPTH

-97.6

-72.3

-45.7

-45.2

-53.0

-51.9

-50.5

-52.0

-52.4

-52.7

-51.9

-51.5

-50.9

-48.7

-46.7

-43.1

-39.0

-35.8

-85.9

APPROX SIZE (FEET)

ANCHOR 14X14X5

ANCHOR 7X7X5

ANCHOR 14X14X5

E 3, 8, E 3, 8, E 3, 8, E 3, 8, N 1,289,500

AREA A: SOUTH BASIN

-11

-5

-15

-20

-25

-30

-17

-15

-20

-16

-25

-30

-35

-10

-5

-70

-60

-50

-30 -20

-10

-10 -15

-20 -30 -35

-40

-3

ANCH-16

ANCH-1

ANCH-2

ANCH-3

ANCH-4

ANCH-5

ANCH-6

ANCH-7

ANCH-8

ANCH-9

ANCH-10

ANCH-11

ANCH-12

ANCH-13

ANCH-14

ANCH-15

ANCH-17

ANCH-18

ANCH-19

ANCH-20

ANCH-21

ANCH-22 ANCH-23

ANCH-24

ANCH-25

ANCH-26

ANCH-27

ANCH-28

ANCH-29

ANCH-30

ANCH-31

ANCH-32

ANCH-33

ANCH-34

ANCH-35

ANCH-36

ANCH-37

ANCH-38

ANCH-39

OBST-6

OBJ-3

OBJ-8

OBJ-9

OBJ-10

OBJ-12

OBJ-14

OBJ-16

OBJ-18

OBJ-20

OBJ-21

OBJ-22

OBJ-23

OBJ-24

OBJ-27

OBJ-28

OBJ-34

OBJ-39

OBJ-40

-10

-40

OH/E

O H

/E O

H /E

O H

/E O

H /E

O H

/E O

H /E

BAR-4 1972

BPB-2 1998

JULIE 2024

E 3, 7, E 3, 8, E 3, 8, E 3, 9, N 1,290,000

N 1,290,500

E 3, 7, E 3, 8, E 3, 8, E 3, 9, 22210

22220

22215

N 1,289,500

E 3, 8, E 3, 9, E 3, 8, E 3, 9, -40

-120

-115

-110

-105

-100

-95

-90

-85 -80

-75 -70

-65

-60 -55-50 -45

-40 -35

-30 -25

-20 -15 -10 -5

-115

-110

-105

-100

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

PROJECT LIMITS

TONGASS NARROWS

PL NO 5

HARBOR

PL NO 6

PL NO 4

PL NO 7

PL NO 8

PL NO 9

PL NO 2

PL NO 3

PROJECT LIMITS

LIM

PROJECT LIMITS

959'

12'

48'

60' (TYP SPACING

NEW ANCHOR BLOCKS)

60'

60' (TYP SPA

NEW ANCHOR BLOCKS)

45'OFFSET

N17

29'

N. 1,289,758 E. 3,098,426

NEW

NAVIGATION

AID (NOTE 8)

140'

42' 42'

62' 42'

19°' 19°'

190'

NEW CONCRETE

ANCHOR BLOCK

10'-0" x 10'-0" x 5'-0"

TYP

NEW CONCRETE

ANCHOR BLOCK

7-0" x 7'-0" x 4'-0" TYP, THIS SIDE

NEW CONCRETE ANCHOR BLOCK

15'-0" x 15'-0" x 5'-0" TYP THIS SIDE

A4 C-201

D4C-201

MAIN CONCRETE FLOATING BREAKWATER

ST C

O N

STR

TIO

VEY LIM

ITS N

TE 9

ST CO

NSTRUCTIO

SURVEY LIM

ITS NO

TE 9

IST

OJE

MITS

, T

POST CONSTRUCTION

SURVEY LIMITS NOTE 9

N1 N2

N3 N4

N5 N6

N7 N8

N9 N10

N11 N12

N13 N14

N15 N16

N18 N19 N20

N21 N22

N23 N24

N25 N26

N27 N28

N29 N30

N31

N32 N33 N34

N36

N107 N108 N109

N102 N103 N104 N105 N101

N106

C-201

N. 1,290,548 E. 3,097,441

N. 1,290,074 E. 3,098,276

NEW

NAVIGATION AID

(NOTE 7)

NEW NAVIGATION

AID (NOTE 7)

N. 1,289,768 E. 3,098,287

NEW CONCRETE ANCHOR BLOCK

18'-0" x 18'-0" x 5'-6" TYP THIS SIDE

ENTRANCE CONCRETEFLOATING

BREAKWATER

PROJECT LIMITS

GRAPHIC SCALE IN FEET

0 300200100 10050

PL NO 1

AREA A SOUTH BASIN:

PROJECT DEPTH - 15 MLLW

AREA B SOUTH BASIN:

PROJECT DEPTH - 10 MLLW

K E

-C -1

C-101

MP PC JC J.

LEGEND

EXISTING CONCRETE ANCHORS BLOCK

PROPOSED NEW CONCRETE ANCHOR BLOCKS

PROPOSED NEW CONCRETE FLOATING BREAKWATER

NEW MOORING CHAIN

SURVEY CONTROL DATA

STATION NORTHING EASTING MLLW DESCRIPTION

BAR-2 1972 1,289,295.61 3,099,769.18 20.94 3.5 DOMED USACE BC

BAR-4 1972 1,289,552.31 3,098,796.18 20.70 3.5 DOMED USACE BC

BPB-2 1998 1,289,530.10 3,099,011.94 19.20 3.25 DOMED SBC

BPB-3 2001 1,289,759.16 3,099,834.79 22.89 3.25 DOMED SBC

JULIE 2024 1,290,612.66 3,098,709.88 22.08 3.25 DOMED SBC

NEW

ANCHOR

BLOCK ID

ELEV. BOTTOM

OF ANCHOR

(MLLW ELEV.

FT.)

CHAIN

LENGTH

(NUMBER OF

LINKS) SEE

NOTE 4

CHAIN

SIZE

ANCHOR BLOCK

DIMENSIONS

N1 -99.0 561 1 3/8" 15.0' x 15.0' x 5.0' N2 -99.0 561 1 3/8" 15.0' x 15.0' x 5.0' N3 -100.4 563 1 3/8" 15.0' x 15.0' x 5.0' N4 -102.8 566 1 3/8" 15.0' x 15.0' x 5.0' N5 -102.5 566 1 3/8" 15.0' x 15.0' x 5.0' N6 -102.1 565 1 3/8" 15.0' x 15.0' x 5.0' N7 -101.2 564 1 3/8" 15.0' x 15.0' x 5.0' N8 -101.3 564 1 3/8" 15.0' x 15.0' x 5.0' N9 -100.1 563 1 3/8" 15.0' x 15.0' x 5.0'

N10 -99.3 562 1 3/8" 15.0' x 15.0' x 5.0' N11 -98.1 560 1 3/8" 15.0' x 15.0' x 5.0' N12 -96.8 558 1 3/8" 15.0' x 15.0' x 5.0' N13 -95.2 556 1 3/8" 15.0' x 15.0' x 5.0' N14 -93.4 554 1 3/8" 15.0' x 15.0' x 5.0' N15 -90.4 550 1 3/8" 15.0' x 15.0' x 5.0' N16 -87.3 546 1 3/8" 15.0' x 15.0' x 5.0' N17 -83.0 540 1 3/8" 15.0' x 15.0' x 5.0' N18 -55.1 231 1 1/2" 7.0' x 7.0' x 4.0' N19 -55.1 231 1 1/2" 7.0' x 7.0' x 4.0' N20 -53.9 230 1 1/2" 7.0' x 7.0' x 4.0' N21 -61.5 241 1 1/2" 7.0' x 7.0' x 4.0' N22 -60.1 239 1 1/2" 7.0' x 7.0' x 4.0' N23 -61.9 241 1 1/2" 7.0' x 7.0' x 4.0' N24 -61.6 241 1 1/2" 7.0' x 7.0' x 4.0' N25 -61.8 241 1 1/2" 7.0' x 7.0' x 4.0' N26 -61.3 240 1 1/2" 7.0' x 7.0' x 4.0' N27 -61.9 241 1 1/2" 7.0' x 7.0' x 4.0' N28 -60.7 239 1 1/2" 7.0' x 7.0' x 4.0' N29 -59.5 238 1 1/2" 7.0' x 7.0' x 4.0' N30 -58.2 236 1 1/2" 7.0' x 7.0' x 4.0' N31 -55.9 233 1 1/2" 7.0' x 7.0' x 4.0' N32 -52.3 228 1 1/2" 7.0' x 7.0' x 4.0' N33 -48.4 222 1 1/2" 7.0' x 7.0' x 4.0' N34 -45.3 218 1 1/2" 7.0' x 7.0' x 4.0' N35 -75.0 346 1 1/2" 10.0' x 10.0' x 5.0' N36 -45.0 315 1 1/2" 10.0' x 10.0' x 5.0'

N101 -92.0 510 1 1/2" 18.0' x 18.0' x 5.5' N102 -84.0 482 1 1/2" 18.0' x 18.0' x 5.5' N103 -79.0 478 1 1/2" 18.0' x 18.0' x 5.5' N104 -72.0 471 1 1/2" 18.0' x 18.0' x 5.5' N105 -50.0 465 1 1/2" 18.0' x 18.0' x 5.5' N106 -89.0 507 1 1/2" 18.0' x 18.0' x 5.5' N107 -57.0 388 1 3/8" 7.0' x 7.0' x 4.0' N108 -45.0 377 1 3/8" 7.0' x 7.0' x 4.0' N109 -30.0 365 1 3/8" 7.0' x 7.0' x 4.0'

D R

D W

G S

O N

D R

E C

O N

E D

C O

N O

O M

U .S

. A R

M Y

R D

H O

E, A

A C

O R

REFERENCE

NUMBER:

SHEET OF

1 2 3 4 5 6 7 8 9 10 11 12

US Army Corps of Engineers ® Alaska District

VERIFY SCALES: BAR IS ONE INCH

P O

, K

C H

, A

G B

1K B2

T-

-0 4-

D ra w in g L:

Tt T

-N um be r P ro je ct s\

) K et ch ik an

B re ak w at er

D \1

D w gs fo r K

5\ C

5- C

-1

.d w g la st s av ed o n

M w as p lo tte d by

L eg ku n, S la vi k on

/7 /2

A M w

.te tra te ch

.c om

AM4

NOTES

1. AS BUILT DRAWINGS MAKE REFERENCE TO AN RCA CABLE. CONTRACTOR SHALL

LOCATE THIS CABLE AND PROTECT IN PLACE.

2. SEE DWG V-101 FOR PROJECT LIMITS DATA INFORMATION.

3. THE DESIGN PRESENTED ON THE DRAWINGS IS BASED ON THE CONCRETE

FLOATING BREAKWATER DIMENSIONS. CHANGES MAY OCCUR IF CONTRACTOR

CONCRETE FLOATING BREAKWATER DIMENSION VARY FOR DRAFT AND FREEBOARD

AND LENGTH. THESE PARAMETERS EFFECT THE CHAIN REACTIONS WHICH MAY

AFFECT CHAIN DESIGN AND ANCHOR BLOCK SIZING.

4. 195 LINKS FOR 15-FATHOM (90-FT) 1 3/8" STUD LINK ANCHOR CHAIN

"ANCHOR MARINE HOUSTON" OR EQUAL.

179 LINKS FOR 15-FATHOM (90-FT) 1 1/2" STUD LINK ANCHOR CHAIN "ANCHOR

MARINE HOUSTON" OR EQUAL.

5. CHAINS SHOULD BE OF THE MATERIAL AND WEIGHT SPECIFIED.

SMALL CHANGES MAY OCCUR IF CONCRETE FLOATING BREAKWATER DRAFT

AND FREEBOARD ARE DIFFERENT FROM THE DRAWING.

6. CHAINS AND ANCHOR ARE POSITIONED PERPENDICULAR TO THE CONCRETE

BREAKWATER'S CENTERLINE, UNLESS SHOWN OTHERWISE.

7. NEW NAVIGATION SIGNS TO MATCH EXISTING. REFER TO SPEC SECTION 01 91 41

FOR ADDITIONAL REQUIREMENTS.

8. IF CHAIN SHOTS ARE JOINED, JOINT LINKS SHALL BE EQUAL OR GREATER

STRENGTH THAN THE JOINED CHAIN.

9. THE POST CONSTRUCTION SURVEY BOUNDARY SHALL EXTEND BEYOND THE NEW

ANCHOR BLOCKS BY 50 FT AS SHOWN.

10. FOR WAVE'S ATTENUATION CRITERIA REFER TO SECTION 01 91 41.

ELEVATION VARIES

(SEE TABLE ON SHEET C-101)

ELEVATION VARIES

(SEE TABLE ON SHEET C-101)

Datum MHHW EL +15.45

Datum EL 01 5'

-5

STUD LINK ANCHOR CHAIN. REFER TO TABLE ON

DRAWING SHEET C-101 FOR SIZE AND LENGTH.

FOR BLOCK ID REFER TO PLAN VIEW SHEET C-101.

DATUM (MLLW) EL 0.00

TONGASS NARROWS SIDE

HARBOR SIDE

EXISTING ANCHOR BLOCK TO

REMAIN IN PLACE . ELEVATION

VARIES, SEE TABLE ON SHEET V101

CL ALIGNMENT - ENTRANCE CONCRETE

FLOATING BREAKWATER

MHHW EL +15.45

EXISTING ANCHOR BLOCK

TO REMAIN IN PLACE.

ELEVATION VARIES, SEE

TABLE ON SHEET V101

ELEVATION VARIES

(SEE TABLE ON SHEET V-101)

ELEVATION VARIES

(SEE TABLE ON SHEET V-101)

EXISTING ANCHOR BLOCK

TO REMAIN IN PLACE

DATUM (MLLW) EL 0.00

MHHW EL +15.45

STUD LINK ANCHOR CHAIN. REFER TO TABLE ON

DRAWING SHEET C-101 FOR SIZE AND LENGTH.

FOR BLOCK ID REFER TO PLAN VIEW SHEET C-101.

EXISTING ANCHOR

BLOCK TO REMAIN PLACE

ELEVATION VARIES

(SEE TABLE ON SHEET C-101)

ELEVATION VARIES

(SEE TABLE ON DWG. C-101)

CL ALIGNMNENT -

MAIN CONCRETE

FLOATING BREAKWATER

TONGASS NARROWS SIDEHARBOR SIDE

20'-0" CONCRETE FLOATING

BREAKWATER WIDTH SEE NOTE 2)

7' -9

" D R

N O

-7 " F

D (S

CHAINS NOT

SHOWN FOR

CLARITY

K E

-C -2

C-201

C O

N C

B R

D R

D W

G S

O N

D R

E C

O N

E D

C O

N O

O M

U .S

. A R

M Y

R D

H O

E, A

A C

O R

REFERENCE

NUMBER:

SHEET OF

1 2 3 4 5 6 7 8 9 10 11 12

US Army Corps of Engineers ® Alaska District

VERIFY SCALES: BAR IS ONE INCH

P O

, K

C H

, A

G B

1K B2

T-

-0 4-

D ra w in g L:

Tt T

-N um be r P ro je ct s\

) K et ch ik an

B re ak w at er

D \1

D w gs fo r K

5\ C

5- C

-2

.d w g la st s av ed o n

M w as p lo tte d by

L eg ku n, S la vi k on

/1 1/

.te tra te ch

.c om

MP PC JC J.

SECTION AT ENTRANCE CONCRETE FLOATING BREAKWATERA4 SCALE: : 1/32" = 1'-0"

SECTION AT MAIN CONCRETE FLOATING BREAKWATERD4 SCALE: : 1/32" = 1'-0"

C-201 G6

SCALE: 3/16" = 1'-0"

SECTION AT ENTRANCE AND MAIN CONCRETE FLOATING BREAKWATERG6

0 64'16' 32'

0 4' 16'8'

NOTES

1. SEE GENERAL NOTE 7 ON SHEET G-003.

2. DIMENSIONS OF FLOATING CONCRETE BREAKWATER SHOWN HEREIN ARE

FOR REFERENCE ONLY. DIMENSIONS ARE PRELIMINARY. MANUFACTURER

TO DICTATE FINAL DIMENSIONS, FINAL FREEBOARD, AND FINAL DRAFT

BASED ON MANUFACTURER'S ATTENUATION AND STABILITY ANALYSES.

C-201 G6

1' -8

CL 2 3/8" DIA DRILLED

HOLE FOR 55M TON

(G-2160 SHACKLE

CROSBY OR EQUAL)

'-0

7" C

2'-0"

2' -6

ABS PIPE PER PLAN

#5 AT 12" OC EW

GALV, TYP

#6 x 4'-0" ANCHOR ROD

1'-0"

1-1/2" CHAIN

(2) LINKS MIN

SEE NOTE 2

5' -0

3" C

(5) #5 VERT

EACH FACE GALV,

TYP3/4" GALV EYE BOLTS FOR

POSITIONING, 2 PLCS, TYP

3" ABS PIPE FOR PLACING

CABLES, 2 PLCS TYP, SEE NOTE 59"

CHAIN PER PLAN

SEE NOTE 2

5' -0

10'-0"

2'-0"

3" CLR

TYP

(5 ) L

S #5

O C

, E W

C-202 A6

SEE NOTE 1

SPARE ANCHOR

POINT

CONCRETE ANCHORS N35 TO N36

2'-0"

3/4" GALV EYE

BOLTS, 6" MIN

EMBEDMENT

SEE DETAIL G7 ON SHEET C-203

FOR CHAIN- ANCHOR ROD CONNECTION

C-203 G7

15'-0"

'-0

(5 ) L

S #5

" O

C , E

2' -6

ABS PIPE PER PLAN

#5 BARS AT 12" OC

GALV EW, TYP

#6 x 5'-0" ANCHOR ROD

1'-0"

1-3/8" CHAIN

(2) LINKS MIN

SEE NOTE 2

7' -6

3" C

(7) #5 VERT BARS

EACH FACE GALV, TYP

3/4" GALV EYE BOLTS FOR

POSITIONING, 2 PLCS, TYP

3/4" GALV EYE

BOLTS, 6" MIN

EMBEDMENT

1'-6"

1' -6

CHAIN PER PLAN

SEE NOTE 2

3" CLR

TYP

2'-0"

7" C

5' -0

C-202 A1

TYP

SPARE ANCHOR

POINT

SEE NOTE 1

3" ABS PIPE FOR PLACING

CABLES, 2 PLCS TYP, SEE NOTE 5

C-202 G6

2'-0" 2'-0"

2'-0"

C-203 G7

SEE DETAIL G7

ON SHEET C-203

FOR CHAIN- ANCHOR ROD

CONNECTION

1' -3

1'-3"

TYP

1 1/4" DIA GALVANIZED HILTI

HIT-HY-200 + HAS-B-105 HD6

(ASTM 1554 GR 105) OR

APPROVED EQUAL

EMBEDDED 20 INCHES

1 1/2" THICK GUSSET PL ( ASTM

A-572 GR. 50 KSI - GALVANIZED)

2" THICK PL

(ASTM A-572

GR. 50 KSI-

GALVANIZED)

1 1/2" THICK PADEYE (ASTM

A-572 GR. 50 KSI- GALVANIZED)

C-202 A10

1' -0

C-202 D10

5" R

1 1/2" PL

1'-0"

CL 2 3/8" DIA DRILLED

HOLE FOR 55M

TON (G-2160

SHACKLE CROSBY

OR EQUAL)

7" 5"

1 1/2" PL

3/4

K E

-C -2

C-202

C O

N C

C H

O R

C K

D R

D W

G S

O N

D R

E C

O N

E D

C O

N O

O M

U .S

. A R

M Y

R D

H O

E, A

A C

O R

REFERENCE

NUMBER:

SHEET OF

1 2 3 4 5 6 7 8 9 10 11 12

US Army Corps of Engineers ® Alaska District

VERIFY SCALES: BAR IS ONE INCH

P O

, K

C H

, A

G B

1K B2

T-

-0 4-

D ra w in g L:

Tt T

-N um be r P ro je ct s\

) K et ch ik an

B re ak w at er

D \1

D w gs fo r K

5\ C

5- C

-2

.d w g la st s av ed o n

M w as p lo tte d by

L eg ku n, S la vi k on

/1 1/

.te tra te ch

.c om

MP PC JC J.

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

ELEVATION - CONCRETE ANCHOR BLOCKS N1 TO N17 - 15' x 15' x 5'A1

0 4'2'1' SCALE: 1/2" = 1'-0"

ELEVATION - CONCRETE ANCHOR BLOCKS N35 - N36 - 10' x 10' x 6'A6

0 4'2'1'

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

PLAN - CONCRETE ANCHOR BLOCKS N1 TO N17 - 15' x 15' x 5'D1

0 4'2'1' SCALE: 1/2" = 1'-0"

PLAN - CONCRETE ANCHOR BLOCKS N35 - N36 - 10' x 10' x 5'D6

0 4'2'1'

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

SECTIONA10

0 6" 2'1'

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

SECTIOND10 0 6" 2'1'

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

SPARE ANCHOR POINT PLANG6 0 6" 2'1'

NOTES

1. CONCRETE BLOCK MANUFACTURER TO ROUGHEN PERPENDICULAR TO CHAIN ENTIRE

BOTTOM SURFACE WITH GROOVE DEPTHS MIN 1/2" DEEP.

2. LINKS INSIDE THE ANCHOR BLOCK AND SHACKLES TO BE GALVANIZED. CHAIN TO

TERMINATE WITH CHAIN FITTINGS THAT WILL BE SELECTED BY INSTALLATION

CONTRACTOR DEPENDING ON THEIR EQUIPMENT AND NEEDS. THE EXPOSED END OF

ALL EMBEDDED MOORING CHAINS AT THE MOORING BLOCKS ARE TO BE OUTFITTED

WITH 55 METRIC TON SHACKLES. THE SHACKLE SHALL WORK CONNECTING THE

CHAIN TO THE CONTRACTOR’S FITTING. THE SHACKLE WILL ALSO WORK IF THE

MOORING CHAIN IS CONNECTED TO THE “SPARE ANCHOR PADEYE” THAT IS PROVIDED

ON THE TOP OF THE ANCHOR BLOCK

3. SEE GENERAL NOTE 7 ON SHEET G-003.

4. ANCHOR BLOCK LIFTING:

ANCHOR BLOCKS DIMENSIONS ARE SHOWN ON THE PLANS. ANCHOR BLOCK LIFTING

IS FOR THE CONTRACTOR TO DESIGN ALTHOUGH THE REINFORCEMENT SHOWN IN

THE ANCHOR BLOCKS IS ADEQUATE FOR A SINGLE POINT LIFT. SPARE ANCHOR POINT

AND CHAIN LINKS EMBEDDED IN THE BLOCKS SHOULD NOT BE USED FOR LIFTING.

5. THE PURPOSE OF THE 3" ABS PIPE IS TO FACILITATE THE LIFTING/HANDLING OF THE

ANCHOR BLOCKS.

6. CONTRACTOR FITTINGS TO BE EQUAL OR GREATER STRENGTH THAN THE MARINE

CHAIN.

#5 AT 11" OC EW

GALV, TYP

#6 x 3'-0" ANCHOR ROD

1-1/2" CHAIN FOR:

N18 TO N34 ANCHOR BLOCKS

(2) LINKS MIN. SEE NOTE 2

1-3/8" CHAIN FOR:

N107 TO N109 ANCHOR BLOCKS

(2) LINKS MIN. SEE NOTE 2

(4) #5 VERT EACH FACE

GALV, TYP

3/4" GALV. EYE BOLTS FOR

POSITIONING, 2 PLCS, TYP

3" ABS PIPE FOR

PLACING CABLES,

2 PLCS, TYP

EYE BOLTS, 6" MIN

EMBEDMENT

4' -0

7'-0"

1'-0"

7' -0

2' -0

-6

1-1/2" CHAIN

(2) LINKS MIN

SEE NOTE 2

(6 ) L

S #5

" O

C , E

EYE BOLTS, 6"

MIN EMBEDMENT

2' -9

"7" C

5' -6

18'-0"

'-0

#5 AT 12" OC EW

GALV, TYP

#6 x 5'-0" ANCHOR ROD

1'-0"

9' -0

3" C

(7) #5 VERT EACH FACE

GALV, TYP

3/4" GALV EYE BOLTS FOR

POSITIONING, 2 PLCS, TYP

1'-6"

1' -6

2'-0"

3" CLR

TYP 7" C

(4 ) L

S #5

O C

E W

3" C

1'-6"

SEE NOTE 1

ABS PIPE PER PLAN

SEE NOTE 1

CHAIN PER PLAN

SEE NOTE 2

CHAIN PER PLAN

SEE NOTE 2

3" ABS PIPE FOR PLACING

CABLES, 2 PLCS, TYP.

(SEE NOTE 5)

TYP

SPARE ANCHOR

POINT

SPARE ANCHOR

POINT

C-203 A8

C-202 G6

C-203 A1

3" CLR

TYP

3" C

1'-6"

2'-0"

1'-6"

2'-0"

C-203 G7

SEE DETAIL G7

ON THIS SHEET

FOR CHAIN- ANCHOR ROD

CONNECTION

C-203 G7

3/4" GALV EYE BOLTS FOR

POSITIONING, 2 PLCS, TYP

9" FOR 1 1/2" CHAIN

8 1/4" FOR 1 3/8" CHAIN

8" F

O R

/2 " C

6" F

O R

/8 " C

1 1/2" FOR 1 1/2" CHAIN

1 3/8" FOR 1 3/8" CHAIN

#6 ANCHOR ROD

K E

-C -2

C-203

C O

N C

C H

O R

C K

D R

D W

G S

O N

D R

E C

O N

E D

C O

N O

O M

U .S

. A R

M Y

R D

H O

E, A

A C

O R

REFERENCE

NUMBER:

SHEET OF

1 2 3 4 5 6 7 8 9 10 11 12

US Army Corps of Engineers ® Alaska District

VERIFY SCALES: BAR IS ONE INCH

P O

, K

C H

, A

G B

1K B2

T-

-0 4-

D ra w in g L:

Tt T

-N um be r P ro je ct s\

) K et ch ik an

B re ak w at er

D \1

D w gs fo r K

5\ C

5- C

-2

.d w g la st s av ed o n

M w as p lo tte d by

L eg ku n, S la vi k on

/1 1/

.te tra te ch

.c om

MP PC JC J.

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

ELEVATION - CONCRETE ANCHOR BLOCKS N101 TO N106 - 18' x 18' x 5.5'A1

0 4'2'1' SCALE: 1/2" = 1'-0"

ELEVATION - CONCRETE ANCHOR BLOCKS N18 TO N34

AND N107 TO N109 - 7' x 7' x 4'A8

0 4'2'1'

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

PLAN - CONCRETE ANCHOR BLOCKS N101 TO N106 - 18' x 18' x 5.5'D1 SCALE: 1/2" = 1'-0"

PLAN - CONCRETE ANCHOR BLOCKS N18 TO N34

AND N107 TO N109 - 7' x 7' x 4'D8

0 6" 2'1'

0 4'2'1'

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

DETAIL - CHAIN ANCHOR ROD CONNECTIONG7

NOTES

1. REFER TO NOTES ON SHEET C-202.

1" - 2"

GAP

60'-0" SECTION, TYP

C-501 A1

1'-6" OFFSET, TYP

SEE NOTE 4

CHAINS NOT SHOWN ON

OTHER UNIT CONC BLOCKS

FOR CLARITY

1" - 2"

GAP

UNIT-TO-UNIT

CONNECTION TYP

1" - 2"

GAP

SECTION-TO-SECTION

CONNECTION TYP

70'-0" SECTION 70'-0"

UNIT 1 = 2 SECTIONS = 140'-0"

SEE NOTE 1, 2 AND 3

C-501 A1

SECTION-TO-SECTION

CONNECTION TYP

20'-0"

SEE NOTE 1

7' -9

" D R

N O

1' -7

" F R

N O

SEE NOTES 3 AND 4

K E

-C -5

C-501

C O

N C

B R

D R

D W

G S

O N

D R

E C

O N

E D

C O

N O

O M

U .S

. A R

M Y

R D

H O

E, A

A C

O R

REFERENCE

NUMBER:

SHEET OF

1 2 3 4 5 6 7 8 9 10 11 12

US Army Corps of Engineers ® Alaska District

VERIFY SCALES: BAR IS ONE INCH

P O

, K

C H

, A

G B

1K B2

T-

-0 4-

D ra w in g L:

Tt T

-N um be r P ro je ct s\

) K et ch ik an

B re ak w at er

D \1

D w gs fo r K

5\ C

5- C

-5

.d w g la st s av ed o n

M w as p lo tte d by

L eg ku n, S la vi k on

/1 1/

.te tra te ch

.c om

MP PC JC J.

UNIT 1 = 4 SECTIONS = 240'-0"

SEE NOTE 1, 2 AND 3

UNIT 2 = 4 SECTIONS = 240'-0"

UNIT 3 = 4 SECTIONS = 240'-0" UNIT 4 = 4 SECTIONS = 240'-0"

SCALE: 3/32" = 1'-0"

MAIN CONCRETE FLOATING BREAKWATER - DETAIL PLAND1

C H

O W

C H

0 8' 32'16'

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

SECTIONA1 SCALE: 3/32" = 1'-0"

ENTRANCE CONCRETE FLOATING BREAKWATER - DETAIL PLANA5

0 8' 32'16'0 8'4'2'

UNIT 3

BELOW

NOTE:

1) CHAIN NOT SHOWN FOR CLARITY

NOTES

1. DIMENSIONS OF CONCRETE FLOATING BREAKWATER SHOWN HEREIN ARE FOR

REFERENCE ONLY. DIMENSIONS ARE PRELIMINARY. BREAKWATER MANUFACTURER TO

DICTATE FINAL DIMENSIONS, FINAL FREEBOARD, AND FINAL DRAFT BASED ON

MANUFACTURER'S ATTENUATION AND STABILITY ANALYSES.

2. SECTIONS TO BE POST-TENSIONED AT SITE TO WORK AS ONE UNIT

3. CONCRETE FLOATING BREAKWATER-CHAIN CONNECTION AS WELL AS UNIT-TO-UNIT

CONNECTIONS TO BE ENGINEERED BY CONCRETE FLOATING BREAKWATER

MANUFACTURER.

4. TO AVOID CLASHING OF THE NEW CHAINS, IT IS RECOMMENDED TO PROVIDE A 1'-6"

OFFSET BETWEEN THE TONGASS NARROWS SIDE CHAINS AND THE HARBOR SIDE CHAINS.

5. IT IS ANTICIPATED THAT BOTH CONCRETE FLOATING BREAKWATER ARE CONSTRUCTED

FROM SECTIONS AND UNITS AS SHOWN ON THE DRAWINGS. SEGMENT LENGTHS AND

BREAKWATER CROSS SECTION CAN VARY AS LONG AS THE PERFORMANCE

REQUIREMENTS ARE MET. BREAKWATER INSTALLATION REQUIRES DISASSEMBLY OF

EXITING BREAKWATER AND IT IS EXPECTED THIS WILL OCCUR DURING THE SUMMER

MONTHS WITH CALM WATERS. A DEGREE OF COORDINATION SHOULD OCCUR WITH THE

HARBORMASTER AND THE CONTRACTOR SHOULD POSITION WORK BARGES TO PROVIDE

TEMPORARY WAVE ATTENUATION DURING CONSTRUCTION.

UNIT 3 ABOVE

File details come from the government source that posted it. Updated Apr 21, 2025.