4. Drawings - Los Padres NF Retaining Wall.pdf

FOREST LOCATION MAP

ARROYO SECO PROJECT LOCATION MAP

TRAVEL DIRECTIONS:

SHEET OF

United States Department of Agriculture

Forest Service

LOS PADRES NF RETAINING WALL PROJECTS

FROM THE KING CITY DISTRICT OFFICE, TURN LEFT ONTO REICH ST AND TRAVEL SOUTHWEST ON

REICH ST FOR 350 FEET, TURN LEFT ON CANAL ST AND TRAVEL FOR 0.2 MILES. MERGE ONTO US HWY

101 N AND STAY ON HW1 101 N FOR 4.1 MILES. TURN LEFT ONTO CENTRAL AVE AND IN 7.2 MILES TURN

LEFT ONTO ELM AVE. STAY ON ELM AVE FOR 4 MILES. TAKE SLIGHT LEFT ON ARROYO SECO ROAD

AND WILL ARRIVE AT DESTINATION IN 11 MILES. LAT/LONG: 36.234702/-121.490559

KING CITY

RANGER STATION

406 S. MILDRED ST.

KING CITY, CA 93930

ARROYO SECO (19S09) AND

RECOMMENDED BY:

APPROVED:

FOREST ENGINEER

DISTRICT RANGER DATE

DATE

DIRECTOR OF

ENGINEERING

DATE

FOREST SUPERVISOR DATE

RO GEOTECHNICAL PROGRAM MANAGER DATE

3/3 0/2

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CALIFORNIA

MONTEREY AND SANTA BARBARA COUNTIES

(R05) PACIFIC SOUTHWEST REGION

LOS PADRES NATIONAL FOREST

MONTEREY AND SANTA BARBARA RANGER DISTRICTS

INDEX OF SHEETS

SHEET SHEET TITLE DATE

G-01 COVERSHEET

G-02 GENERAL NOTES AND SCHEDULE OF ITEMS

C-01 ARROYO SECO SITE OVERVIEW & EXISTING CONDITIONS

C-02 ARROYO SECO PROPOSED CONDITIONS - PLAN AND PROFILE

C-03

ARROYO SECO PROPOSED CONDITIONS - SECTION VIEWS STA 1+43

TO 1+97

C-04

ARROYO SECO PROPOSED CONDITIONS - SECTION VIEWS STA 2+13

TO 2+43

C-05 ROMERO CAMUESA SITE OVERVIEW & EXISTING CONDITIONS

C-06 ROMERO CAMUESA PROPOSED CONDITIONS - PLAN AND PROFILE

C-07

ROMERO CAMUESA PROPOSED CONDITIONS - SECTION VIEWS STA

0+10 TO 1+10

C-08

ROMERO CAMUESA PROPOSED CONDITIONS - SECTION VIEWS STA

1+35 TO 2+00

C-09

ROMERO CAMUESA PROPOSED CONDITIONS - SECTION VIEWS STA

2+50 TO 3+00

C-10 DRAINAGE DETAILS

C-11 MSE WALL DETAILS

C-12 MSE WALL INSTALLATION

C-13 ROCK BUTTRESS DETAILS

TRAVEL DIRECTIONS:

FROM MONTECITO, TAKE CA STATE HWY 192 WESTBOUND AND THEN TURN RIGHT ON EL CIELITO

ROAD. AFTER A HALF MILE TURN RIGHT ONTO NATIONAL FOREST SYSTEM ROAD 5N40/GIBRALTER

ROAD. STAY ON THIS FOR 6.25 MILES AND THEN TURN RIGHT ON EAST CAMINO CIELO. EAST CAMINO

CIELO TURNS INTO ROMERO CANYON ROAD AT 6.7 MILES. ROAD TURNS LEFT AND BECOMES ROMERO

CAMUESA ROAD AND YOU WILL ARRIVE AT SITE IN LESS THAN HALF A MILE. LAT/LONG:

34.478897/-119.590439

MONTECITO, CA

ROMERO CAMUESA

RD SITE

ROMERO CAMUESA (15N15) ROADS

ROMERO CAMUESA PROJECT LOCATION MAP

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

4/4 /22

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY AND SANTA BARBARA

RANGER DISTRICS

GENERAL NOTES AND

SCHEDULE OF ITEMS

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

G-02 002 015

1. SPECIFICATIONS: ALL WORK SHALL CONFORM TO THE STANDARD SPECIFICATIONS FOR CONSTRUCTION OF

ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS (FP-14 [U.S. CUSTOMARY UNITS]) WITH AMENDMENTS IN

THE APPLICABLE FOREST SERVICE SUPPLEMENTAL SPECIFICATIONS (FSSS).

·1. THE PARENT SPECIFICATION CAN BE DOWNLOADED FROM https://highways.dot.gov/federal-lands/specs

·2. THE FSSS ARE CONTAINED IN A SEPARATE DOCUMENT.

2. LOCATIONS:

·1. ARROYO SECO ROAD - MONTEREY RANGER DISTRICT (IN KING CITY, CA)

·2. ROMERO CAMUESA ROAD - SANTA BARBARA RANGER DISTRICT (IN SANTA BARBARA, CA)

3. WORK: THE CONTRACTOR IS REQUIRED TO FURNISH ALL MATERIALS AND LABOR TO COMPLETE THE WORK AS

DETAILED IN THE SCHEDULE OF ITEMS INCLUDING:

·1. PROVIDE A SOIL EROSION CONTROL PLAN (PER SECTION 157)

·2. REMOVE THE EXISTING RETAINING STRUCTURES (SECTION 203)

·3. CONSTRUCT NEW MECHANICALLY STABILIZED EARTH RETAINING WALL AS SHOWN HEREIN (SECTION 255)

·4. CONSTRUCT NEW ROCK BUTTRESS IN FRONT OF EXISTING CRIB WALL AS SHOWN HEREIN (SECTION 252)

·5. INSTALL DOUBLE-SIDED GEOCOMPOSITE UNDERDRAIN SYSTEM (SECTION 605)

·6. PLACING AGGREGATE SURFACING ON ROAD WHEN RETAINING STRUCTURES ARE COMPLETED (SECTION

302)

·7. SEEDING (SECTION 625) ON ALL DISTURBED NATIVE GROUND AT END OF WORK

·8. INSTALL EROSION CONTROL BLANKETS (SECTION 629) ON ALL DISTURBED NATIVE GROUND AT END OF

WORK.

·9. INSTALL TRAFFIC DELINEATORS (10' O.C.)

4. SURVEYS:

·1. SITE SURVEYS WERE CONDUCTED IN MARCH 2021.

·2. A LOCAL COORDINATE SYSTEM WAS USED FOR EACH SITE WITH AN ASSUMED NORTH DIRECTION. (PLEASE

SEE THE NOTES FOR EACH SITE FOR MORE DETAILS.)

·3. DUE TO DIFFICULT SITE ACCESS AND STEEP TERRAIN, AREAS AROUND THE FAILURE WERE INTERPOLATED

(PLEASE SEE THE NOTES FOR EACH SITE FOR MORE DETAILS).

5. SITE CONDITIONS:

·1. BOTH SITES ARE IN VERY STEEP TERRAIN WITH LOOSE SOIL ON THE FILL SLOPE SIDE OF THE ROAD.

·2. BOTH SITES ARE BEHIND LOCKED GATES, COORDINATE ACCESS WITH CO.

·3. CUT SLOPE ON EITHER SITE MAY NEED TO BE STABILIZED AFTER EXCAVATION, PENDING CONTRACTOR'S

DETERMINATION. CONTRACTOR IS RESPONSIBLE FOR THIS DETERMINATION AND ANY MEASURES TAKEN.

THIS SHALL BE INCIDENTAL TO ITEM 255 WITH NO ADDITIONAL COMPENSATION FOR CUT SLOPE

STABILIZATION.

6. CLEARING LIMITS: 10 FEET BEYOND EDGE OF IMPROVEMENTS AND NEW CONTOURS.

7. UTILITIES: NO KNOWN UTILITIES AT THESE SITES

8. GEOTECHNICAL:

·1. ONLY HAND TOOL INVESTIGATIONS WERE PERFORMED. THE SITE SOILS FOR EACH ARE HIGHLY

DECOMPOSED GRANITIC MATERIALS. BEDROCK IS NOT ANTICIPATED WITHIN THE WORK AREA, HOWEVER, BEDROCK IS LIKELY DECOMPOSED AND SHOULD BE ABLE TO BE MECHANICALLY BROKEN UP WITH

EQUIPMENT.

·2. FOUNDATIONS MUST BE APPROVED BY CONTRACTING OFFICER PRIOR TO PLACEMENT OF RETAINING

STRUCTURES.

9. MATERIAL SOURCES: NO GOVERNMENT MATERIAL SOURCES ARE DESIGNATED FOR THIS CONTRACT.

CONTRACTOR WILL NEED TO PROCURE ALL MATERIALS FROM COMMERCIAL OR OTHER SOURCES.

·1. THE ONLY EXCEPTION IS SUITABLE IN-PLACE EXISTING FILL WHICH MAY BE USED IF IT MEETS THE

SPECIFICATIONS.

10. DISPOSAL: ALL MATERIAL DESIGNATED FOR REMOVAL BECOME THE PROPERTY OF THE CONTRACTOR AND ARE

TO BE DISPOSED OF BY REMOVING FROM SITE IN AN ENVIRONMENTALLY SAFE MANNER IN ACCORDANCE WITH

ALL LOCAL, STATE, AND FEDERAL REQUIREMENTS. NO DESIGNATED GOVERNMENT WASTE SITE IS PROVIDED

FOR THIS CONTRACT.

11. SOIL EROSION AND POLLUTION CONTROL PLAN: CONTRACTOR SHALL SUBMIT A SOIL EROSION AND SEDIMENT

CONTROL PLAN TO CO FOR APPROVAL WITHIN THE TIMELINES DELINEATED IN THE SPECIFICATIONS PRIOR TO

THE BEGINNING OF WORK. (SEE SECTION 157)

12. NOXIOUS WEED CONTROL: ALL CONSTRUCTION EQUIPMENT SHALL BE CLEANED AND POWER WASHED AND

FREE OF DIRT & DEBRIS PRIOR TO ENTRY NATIONAL FOREST LANDS. CO MAY REQUIRE INSPECTION.

13. CONTRACTOR QUALITY CONTROL: SECTION 106

·1. CONTRACTOR SHALL BE REQUIRED TO PROVIDE A QUALITY CONTROL SYSTEM THAT WILL ENSURE THE

CONSTRUCTION UNDER THIS CONTRACT CONFORMS TO THE CONTRACT REQUIREMENTS.

·2. CONTRACTOR SHALL USE AN AASHTO ACCREDITED CONSTRUCTION MATERIALS TESTING LABORATORY

UNDER THIS CONTRACT.

·3. INCIDENTAL TO ITEM 154

14. METHOD OF MEASUREMENT, ACCEPTANCE, BASIS OF PAYMENT: MEASUREMENT AND PAYMENT SHALL BE

PERFORMED ACCORDING TO THE SCHEDULE OF ITEMS CONTAINED HEREIN. (SEE SECTION 106)

GENERAL NOTES: SCHEDULE OF ITEMS

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ROCK WALL

FAILED BLOCK WALL

EDGE OF ROAD

FILL FAILURE

NATURAL GROUND

SHOULDER

NATURAL GROUND

SHOULDER

WOOD POSTS

NFSR 19S09.3

SLUMP

INTERPOLATED SURVEY AREAS

EXISTING NATIVE

SURFACED ROAD

TYP. 11 FEET WIDE

TO GREENFIELD

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

3/3 1/2

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY RANGER DISTRICT

ARROYO SECO SITE

OVERVIEW & EXISTING

CONDITIONS

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-01 003 015

ASSUMED

Feet

0 30 60

ARROYO SECO NOTES:

GENERAL

· THE ARROYO SECO SITE HAS A FAILED BLOCK WALL AND

A ROCK WALL.

· A SITE SURVEY WAS DONE IN MARCH 2021 USING A

LOCAL COORDINATE SYSTEM AND ASSUMED NORTH

DIRECTION, NORTHING, AND EASTING COORDINATES.

· DUE TO STEEPNESS OF THE SITE, SOME OF THE SURVEY

WAS INTERPOLATED AS DESIGNATED ABOVE. IT IS

ASSUMED THE TOPOGRAPHY OUTSIDE OF THE FAILURE

ZONE IS GENERALLY CONSISTENT.

· THE GOOGLE EARTH IMAGERY UNDERLAIN THE

TOPOGRAPHIC SURFACE IS AN APPROXIMATE FIT.

· THE CONTRACTOR SHALL REMOVE ALL EXISTING BLOCK

AND ROCK WALL MATERIALS, INCIDENTAL TO ITEM 203.

·· AFTER REMOVAL OF EXISTING WALLS, STAKE NEW

WALLS FOR CO APPROVAL.

·· REMOVAL OF EXISTING POSTS DIRECTLY IN THE

CONSTRUCTION AREA ARE PERMITTED.

CP 202, 207 PLACED OUTSIDE

OF EXTENTS OF TOPO SURFACE

CP 201, 204 PLACED OUTSIDE

OF EXTENTS OF TOPO SURFACE

MATERIALS

· THE RETAINING WALL IS DESIGNED AS A WELDED WIRE

MESH MECHANICALLY STABILIZED EARTH (MSE) WALL.

· RETAINING WALL SHALL BE CONSTRUCTED IN

ACCORDANCE WITH SECTION 255 AND APPLICABLE FP-14

AND FSSS REFERENCES.

· DESIGN WAS BASED ON THE USE OF HILFIKER(R)

WELDED WIRE WALL MATERIALS. CONTRACTOR SHALL

USE HILFIKER MSE AND THE CALLED OUT MATERIALS OR

EQUAL. CONTRACTOR MAY ELECT FOR ALTERNATIVE

RETAINING WALL SYSTEMS PENDING APPROVAL BY THE

CO.

· USE MANUFACTURER'S INSTALLATION INSTRUCTIONS

AND RECOMMENDATIONS.

· CONTRACTOR MAY ELECT TO HAVE MANUFACTURER

FIELD REPRESENTATIVES ON SITE DURING INITIAL

CONSTRUCTION BUT IS NOT REQUIRED TO.

· THE FOLLOWING MINIMUM WIRE SIZES SHALL BE USED:

·· W9.5 (DIA: 0.348 IN) X 8" (PERPEDICULAR TO WALL

FACE)

·· W9.5 X 21" TRANSVERSE WIRES (PARALLEL TO WALL

FACE)

·· REINFORCING STEEL YIELD STRENGTH = 65 KSI

·· HOT DIP GALVANIZE (MIN 2.0 OZ PER SQ SF) ALL

REINFORCING STEEL AND BACKING MATS IN

ACCORDANCE WITH AASHTO M111 OR ASTM A123.

· MSE WALL SHALL HAVE CARSONITE TRAFFIC

DELINEATORS INSTALLED 9 FEET ON CENTER, AT THE

ROAD FILL SIDE. SHALL BE INCIDENTAL TO ITEM 633.

· A DOUBLE-SIDED GEOCOMPOSITE DRAIN AND HDPE

(ALTERNATIVE MATERIALS MAY BE SUBMITTED FOR

REVIEW AND CONSIDERATION) SHALL BE USED FOR

SUBSURFACE DRAINAGE.

EARTHWORK

· FILL: ALL FILL MATERIALS IN THE RETAINING WALL SHALL

MEET THE REQUIREMENTS IN SUBSECTION 704.08 (SEE

WALL DETAILS). IF ON-SITE MATERIAL MEETS

SPECIFICATIONS, IT MAY BE USED IF IT IS LOCATED WITHIN

THE FAILED ROAD PRISM SECTION. NO OTHER GROUND

MAY BE DISTURBED OR USED AS A BORROW SOURCE.

· WASTE: ANY IN-PLACE EXISTING FILL THAT IS UNSUITABLE

OR NOT IN CONFORMANCE WITH THE SPECIFICATIONS,

DEBRIS, BOULDERS, LOGS, ETC SHALL BE CONSIDERED

WASTE.

· FOUNDATION APPROVAL: PRIOR TO WALL PLACEMENT,

FOUNDATION SHALL BE APPROVED BY THE CO. IF

FOUNDATION IS SOFT, WET, PUMPING WATER, OR ANY

OTHER ADVERSE CONDITION, NOTIFY THE CO

IMMEDIATELY.

· ENDS OF WALL MUST BE KEYED INTO UNDISTURBED

GROUND. CONTRACTOR SHALL TAKE CARE TO NOT

OVER-EXCAVATE AROUND THE SIDES AND FOUNDATION OF

THE WALL. IF OVER-EXCAVATION OCCURS SUCH THAT THE

WALL MUST BE LENGTHENED OR HEIGHT INCREASED,

CONTRACTOR SHALL DO THIS WORK AT NO COST TO THE

GOVERNMENT, SUBJECT TO APPROVAL BY THE CO.

POINT TABLE

POINT #

NORTHING

20000.00

20000.00

20042.74

20028.23

20090.08

20042.17

20052.09

EASTING

20000.00

20467.97

20245.40

19921.52

20156.27

20279.24

20719.78

ELEVATION

2000.00

2016.74

2009.49

1996.40

2005.69

2008.88

2023.44

DESCRIPTION

CP TKD 1X2 FEATHER

CP TKD 1X2 FEATHER

CP TKD 1X2 FEATHER

CP TKD 1X2 FEATHER

CP TKD 1X2 FEATHER

TACKED 1X2 W FEATHER

TACKED 1X2 W FEATHER

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ENDS OF WALL SHALL

BE BURIED WITH ON-SITE

MATERIAL THIS MAY REQUIRE

FILL AND/OR RECONTOURING.

OUTLINE OF MSE WALL

REINFORCEMENT MATS, TYP

5% SLOPE

NEW CENTERLINE

FACE OF MSE WALL

END AGGREGATE

SURFACING AT STA 2+43

AND COMPLETE TRANSITION

BACK TO EXISTING ROAD SECTION

START AGGREGATE

SURFACING AT STA 1+43

AND BEGIN TRANSITION

TO 4% INSLOPE

NATURAL GROUND SHOULDER

OUTLINE OF TOP OF

GEOCOMPOSITE DRAIN

CARSONITE MARKER

TRAFFIC DELINEATORS

AT 10' O.C.

4% ROAD

CROSS-SLOPE

L

Δ

R

L: 19.5

Δ: 14.9

R: 7 5.25

L

Δ

P

C

P

T

P

P T

P C

P

T

CREATE BENCH

IN FRONT OF WALL

5 FEET MINIMUM

IN CENTER

E L E

V A

T I O

N

F

E E

T

E L E

V A

T I O

N

F

E E

T

STATION (FEET)

WALL ALIGNMENT (AS) PROFILE

1+40 1+50 2+00 2+45

STA 1+73.00

ELEV 2006.97

M

A T

S

M

A T

S

BURY ENDS OF WALL

1:1 MAX SLOPE

BURY ENDS OF WALL

1:1 MAX SLOPE

BURY/EMBED BOTTOM

OF WALL 4 MAT LIFTS (8 FEET)

EXISTING GROUND

PROFILE IN FRONT

OF NEW MSE

RETAINING WALL

DESIGN ROAD PROFILE

TOP OF AGGREGATE SURFACING:

AGGREGATE SURFACING

SHALL BE PLACED LEVEL

WITH EXISTING SUBGRADE

EXISTING ROAD PROFILE

8 INCH SOLID PIPE

OUTLET DRAIN

8.0'

5.0'

STA 1+80.53

ELEV 1988.25

STA 1+72.26

ELEV 1992.00

STA 1+98.03

ELEV 1992.54

STA 2+13.00

ELEV 2007.96

STA 1+73.00

ELEV 1992.97

STA 2+13.00

ELEV 1993.96

BEGIN 6 INCH THICK

AGGREGATE SURFACING

STA 1+43.00

ELEV 2008.91

END 6 INCH THICK

AGGREGATE SURFACING

STA 2+43.00

ELEV 2011.39

2.4%

DESIGN ROAD PROFILE

TOP OF SUBGRADE:

SUBGRADE SHALL BE CUT IN

6 INCHES BELOW

FINISHED GRADE

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

3/3 1/2

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY RANGER DISTRICT

ARROYO SECO

PROPOSED CONDITIONS

- PLAN AND PROFILE

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-02 004 015

Feet

0 10 20

ASSUMED

LAYOUT POINT TABLE

POINT #

DESCRIPTION

Aggregate Start

Alignment Wall Start

1+73 Wall Corner

2+13 Wall Corner

Alignment Wall End

Aggregate End

STA 1+25

STA 2+58

NORTHING

20057.87

20046.56

20034.24

20030.52

20042.86

20045.67

20070.63

20048.11

EASTING

20242.22

20269.18

20268.03

20308.08

20309.00

20338.78

20229.54

20353.27

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L

E V

A T

I O

N

F

E E

T

OFFSET (FEET)

1+43.00

0 10 20 30 40 500-10-20-30

E L

E V

A T

I O

N

F

E E

T

OFFSET (FEET)

1+55.00

0 10 20 30 40 500-10-20-30

E L

E V

A T

I O

N

F

E E

T

OFFSET (FEET)

1+65.00

0 10 20 30 40 500-10-20-30

E L

E V

A T

I O

N

F

E E

T

OFFSET (FEET)

1+73.00

0 10 20 30 40 500-10-20-30

E L

E V

A T

I O

N

F

E E

T

OFFSET (FEET)

1+81.00

0 10 20 30 40 500-10-20-30

E L

E V

A T

I O

N

F

E E

T

OFFSET (FEET)

1+97.00

0 10 20 30 40 500-10-20-30

BEGIN 6"

AGGREGATE SURFACING

MATCH EXISTING SLOPE

AND WIDTH AND

BEGIN TRANSITION TO

DESIGN 4% INSLOPE AND

12' ROAD WIDTH

LEAVE EXISTING CUT

SLOPES UNDISTURBED

2.5% (MATCH EXISTING)

9.8' (M

ATCH E

XIS

TIN

G W

ID

TH)

3.5% (CONTINUE TRANSITION TO DESIGN 4%)

11.6' (C

ONTIN

UE TO M

ATCH EXISTIN

G)

13.6' (C

ONTIN

UE T

O M

ATCH E

XIS

TIN

G

CURVE W

ID

ENIN

G)

EXISTING GROUND

PROPOSED FINISHED

GROUND

4% (DESIGN INSLOPE)

12.0'

BEGIN MSE WALL

(7 MAT LIFTS)

FINISHED GROUND

ENDS OF WALL MUST

BE BURIED

MAX SLOPE 1:1

EXISTING GROUND

4%

BEGIN MSE WALL

(9 MAT LIFTS)

FINISHED GROUND

EMBED WALL FOUNDATION

4 LIFTS

SLOPE WALL BENCH 5%

BEGIN MSE WALL

(7 MAT LIFTS)

FINISHED GROUND

EMBED WALL FOUNDATION

2 LIFTS

SLOPE WALL BENCH 5%

12.0'

4%

12.0'

4%

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

3/3 0/2

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2.D W

G;

(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY RANGER DISTRICT

ARROYO SECO

PROPOSED CONDITIONS

- SECTION VIEWS STA

1+43 TO 1+97

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-03 005 015

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2+13.00

0 10 20 30 40 500-10-20-30

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2+25.00

0 10 20 30 40 500-10-20-30

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2+43.00

0 10 20 30 40 500-10-20-30

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OFFSET (FEET)

2+35.00

0 10 20 30 40 500-10-20-30

END MSE WALL

FINISHED GROUND

ENDS OF WALL MUST

BE BURIED

MAX SLOPE 1:1

12.0'

4%

12.0'

4.5%

BEGIN TRANSITION BACK TO

EXISTING SLOPE AND ROAD WIDTH

CONTINUE TRANSITION BACK

TO EXISTING SLOPE AND WIDTH

5.5% (CONTINUE TRANSITION)

11.8

6.5%

.1

END 6" AGGREGATE SURFACING AND

COMPLETE TRANSITION TO MATCH

EXISTING SLOPE AND WIDTH

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

3/3 0/2

2 2 3:

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2.D W

G;

(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY RANGER DISTRICT

ARROYO SECO

PROPOSED CONDITIONS

- SECTION VIEWS STA

2+13 TO 2+43

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-04 006 015

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NFSR 5N15

SLUMP

EXISTING 18" CMP

FAILED CRIB WALL

FLOW LINE

NATURAL GROUND

SHOULDER

INTERPOLATED SURVEY AREAS

EDGE OF ROAD

EXISTING NATIVE

SURFACED ROAD

TYP. 14 FEET WIDE

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

4/4 /22

:0

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ST

IN

G.

DW

G;

(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

SANTA BARBARA RANGER

DISTRICT

ROMERO CAMUESA SITE

OVERVIEW & EXISTING

CONDITIONS

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-05 007 015

ROMERO CAMUESA NOTES:

ASSUMED

POINT TABLE

POINT #

NORTHING

10000.00

9895.46

9850.52

9986.69

10065.08

9937.90

EASTING

10000.00

10301.64

9679.43

10128.39

9927.10

10445.72

ELEVATION

1000.00

1017.12

984.45

1005.54

996.70

1021.95

DESCRIPTION

CP TKD 1X2 FEATHER

CP TKD 1X2 FEATHER

CP TKD 1X2 FEATHER

1X2 W TACK AND FEATHER

TACKED 1X2 W FEATHER

TACKED 1X2 W FEATHER

CP 102, 106 PLACED OUTSIDE

OF EXTENTS OF TOPO SURFACE

CP 103, 105 PLACED OUTSIDE

OF EXTENTS OF TOPO SURFACE

GENERAL

· THE ROMERO CAMUESA SITE HAS A FAILED CRIB WALL

WITH A ROCK BUTTRESS.

· A SITE SURVEY WAS DONE IN MARCH 2021 USING A

LOCAL COORDINATE SYSTEM AND ASSUMED NORTH

DIRECTION, NORTHING, AND EASTING COORDINATES.

· DUE TO STEEPNESS OF THE SITE, SOME OF THE SURVEY

WAS INTERPOLATED AS DESIGNATED ABOVE. IT IS

ASSUMED THE TOPOGRAPHY OUTSIDE OF THE FAILURE

ZONE IS GENERALLY CONSISTENT.

· THE GOOGLE EARTH IMAGERY UNDERLAIN THE

TOPOGRAPHIC SURFACE IS AN APPROXIMATE FIT.

· IT IS ASSUMED THE TOPO SURVEY CAPTURED THE

EXTENTS OF THE EXISTING WALLS.

MATERIALS

· THE EXISTING CRIB WALL SHALL HAVE A ROCK

BUTTRESS PLACED IN FRONT OF IT.

· ROCK BUTTRESS SHALL BE CONSTRUCTED IN

ACCORDANCE WITH SECTION 252 AND APPLICABLE FP-14

AND FSSS REFERENCES.

· A CLASS I NONWOVEN TYPE E GEOTEXTILE SHALL BE

PLACED ON EXCAVATED SOIL PRIOR TO ROCK BUTTRESS

PLACEMENT.

EARTHWORK

· WASTE: ANY IN-PLACE EXISTING FILL THAT IS UNSUITABLE

OR NOT IN CONFORMANCE WITH THE SPECIFICATIONS,

DEBRIS, BOULDERS, LOGS, ETC SHALL BE CONSIDERED

WASTE.

· FOUNDATION APPROVAL: PRIOR TO WALL PLACEMENT,

FOUNDATION SHALL BE APPROVED BY THE CO. IF

FOUNDATION IS SOFT, WET, PUMPING WATER, OR ANY

OTHER ADVERSE CONDITION, NOTIFY THE CO

IMMEDIATELY.

· ENDS OF ROCK BUTTRESS MUST BE KEYED INTO

UNDISTURBED GROUND. CONTRACTOR SHALL TAKE CARE

TO NOT OVER-EXCAVATE AROUND THE SIDES AND

FOUNDATION OF THE BUTTRESS. IF OVER-EXCAVATION

OCCURS SUCH THAT THE BUTTRESS MUST BE

LENGTHENED OR HEIGHT INCREASED, CONTRACTOR

SHALL DO THIS WORK AT NO COST TO THE GOVERNMENT,

SUBJECT TO APPROVAL BY THE CO.

Feet

0 30 60

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5% SLOPE

ROCK BUTTRESS

CLASS 4 RIPRAP

EXISTING CENTERLINE

START AGGREGATE

SURFACING

AT STA 0+10 AND

EXISTING 4% INSLOPE

END AGGREGATE

SURFACING

AT STA 2+90 AND

EXISTING 4% INSLOPE

NATURAL GROUND SHOULDER

L

Δ

L

.5

Δ

.5

R

L

31.2

Δ

12.6

R : 1

42.2

L

Δ

R

L

Δ

L

Δ

L

Δ

6R

L

Δ

P

P

P

P

T

P

C

P T

P C

P

P

P

P

P

P

P

P

P

KEEP EXISTING CRIB

WALL IN PLACE -

STA ~1+15 TO ~1+47

CLEAN OUT

18" CMP

SHADING REPRESENTS

EXTENTS OF NEW

ROAD SURFACING

4% ROAD

CROSS-SLOPE

CREATE BENCH IN

FRONT OF BUTTRESS

2 FEET MINIMUM

E L E

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N

F

E E

T

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V A

T I O

N

F

E E

T

STATION (FEET)

CL-ALIGNMENT_RC PROFILE

0+00 0+50 1+00 1+50 2+00 2+50 3+003+02

DESIGN ROAD PROFILE

TOP OF AGGREGATE SURFACING:

AGGREGATE SURFACING SHALL

BE PLACED LEVEL WITH DESIGN

SUBGRADE ELEVATION

BEGIN 6 INCH THICK

AGGREGATE SURFACING

STA 0+10.00

ELEV 998.83

DESIGN ROAD PROFILE

TOP OF SUBGRADE:

SUBGRADE SHALL BE CUT IN

6 INCHES BELOW FINISHED GRADE

END 6 INCH THICK

AGGREGATE SURFACING

STA 2+10.00

ELEV 1011.44

4.5

BUTTRESS KEYWAY

BEGIN STA 1+10.00

ELEV 977.16

3 FT EMBEDMENT

BUTTRESS KEYWAY

END STA 1+60.00

ELEV 979.45

3 FT EMBEDMENT

BUTTRESS FOUNDATION

STA 1+60

ELEV 982.45

BUTTRESS FOUNDATION

STA 1+10.00

ELEV 980.16

8 INCH SOLID

PIPE OUTLET DRAIN

EXISTING GROUND

PROFILE IN FRONT

OF BUTTRESS

ROCKFALL NETTING

6 LAYERS

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

3/3 1/2

2 0 9:

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P1 .D

W G;

(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

SANTA BARBARA RANGER

DISTRICT

ROMERO CAMUESA

PROPOSED CONDITIONS

- PLAN AND PROFILE

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-06 008 015

LAYOUT POINT TABLE

POINT #

DESCRIPTION

START AGGREGATE

STA 0+25

BUTTRESS START

BUTTRESS END

BUTTRESS START BOTTOM

BUTTRESS END BOTTOM

STA 2+00

END AGGREGATE

START EXISTING CRIB WALL

END EXISTING CRIB WALL

NORTHING

10015.74

10006.17

9985.81

9977.44

9965.03

9959.14

9972.67

9926.35

9986.18

9982.69

EASTING

9995.65

10007.33

10090.37

10131.71

10092.18

10122.65

10173.91

10250.72

10094.95

10123.86

Feet

0 20 40

ASSUMED

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0+10

0 10 20 30 40 500-10-20-30-40-50

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0 10 20 30 40 500-10-20-30-40-50

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1+10

0 10 20 30 40 500-10-20-30-40-50

17.38' -

MATCH E

XIS

TIN

G W

ID

TH

LEAVE EXISTING CUT

SLOPES UNDISTURBED

BEGIN 6" AGGREGATE SURFACING

MATCH EXISTING SLOPE (4%) AND WIDTH

MAINTAIN 4% INSLOPE THROUGHOUT

4%

4% (DESIGN INSLOPE)

22.01' -

MATCH E

XIS

TIN

G W

ID

TH

CONTINUE 4% INSLOPE

EXISTING GROUND

PROPOSED/FINISHED GROUND

BEGIN ROCK BUTTRESS

WRAP BOTTOM IN

ROCKFALL NETTING

4% OUTSLOPED

BENCH

14.5 3'

13.88'

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

3/3 0/2

2 2 3:

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

SANTA BARBARA RANGER

DISTRICT

ROMERO CAMUESA

PROPOSED CONDITIONS

- STA 0+10 TO 1+10

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-07 009 015

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1+60

0 10 20 30 40 500-10-20-30-40-50

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1+35

0 10 20 30 40 500-10-20-30-40-50

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1+75

0 10 20 30 40 500-10-20-30-40-50

RETAIN EXISTING

CRIB WALL

PLACING RIPRAP

IN FRONT

14.38'

15.59'

15.21'

12.0 1'

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

3/3 0/2

2 2 3:

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EC

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S1

.D W

G;

(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

SANTA BARBARA RANGER

DISTRICT

ROMERO CAMUESA

PROPOSED CONDITIONS

- STA 1+35 TO 2+00

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-08 010 015

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2+50

0 10 20 30 40 500-10-20-30-40-50

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2+90

0 10 20 30 40 500-10-20-30-40-50

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3+00

0 10 20 30 40 500-10-20-30-40-50

13.42'

13.65'

END 6" AGGREGATE SURFACING

AT DESIGN 4% SLOPE

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

3/3 0/2

2 2 3:

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S1

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

SANTA BARBARA RANGER

DISTRICT

ROMERO CAMUESA

PROPOSED CONDITIONS

- STA 2+50 TO 3+00

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-09 011 015

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PREFABRICATED CONTINUOUS

GEOCOMPOSITE SHEET DRAIN

WITH FABRIC ON BOTH SIDES.

HYDRAULICALLY CONNECT TO

DRAIN COLLECTION PIPE

UNDERDRAIN SYSTEM.

WALL FACE

B

E L O

W

F

I N

I S

H E

D

G

R A

D E

EXISTING GROUND

COMPACTED FILL

BOTTOM WALL

REINFORCEMENT

SCREEN OUTLET WITH

0.5" MESH - 1.4-MM WIRE

GALVANIZED SCREEN.

SECURE SCREEN TO

OUTLET WITH GALVANIZED

CLAMPS OR WIRES.

FINISHED GROUND

MIN. SLOPE 5%,

MIN. LENGTH 5'

BACK OF WALL EXCAVATION

FINISHED GROUND

MSE DRAINAGE SYSTEM

SECTION VIEW DETAIL

NTS

PIPE END CAP

PERFORATED DRAIN PIPE SHALL

BE SLOPED TO DRAIN AT LEAST 1%

90 DEG. ELBOW AT OUTLET

PIPE CONNECTION

CONTINUOUS GEOCOMPOSITE

SHEET DRAIN

GEOCOMPOSITE SHEET DRAIN

ELEVATION VIEW DETAIL

NTS

GRANULAR BACKFILL

CONFORMING TO 703.03

8" DIA. CORRUGATED HIGH

DENSITY POLYETHYLENE

DRAINAGE PIPE (PERFORATED)

1% min

NON-PERFORATED OUTLET PIPE.

SLOPE TO MIN. 1% TO DAYLIGHT.

PROVIDE (1) OUTLET PIPE

FOR EACH LENGTH OF UNDERDRAIN.

BED IS GRANULAR BACKFILL.

GEOTEXTILE CLASS 1 (NONWOVEN).

OVERLAP TOP A MINIMUM OF 12". ENDS

MUST BE SEALED TO PREVENT LOSS OF

DRAIN AGGREGATE.

PREFABRICATED CONTINUOUS

GEOCOMPOSITE SHEET DRAIN

WITH FABRIC ON BOTH SIDES.

HYDRAULICALLY CONNECT TO

DRAIN COLLECTION PIPE.

UNDERDRAIN DETAIL

NTS

OUTLET PIPE ANCHOR

ASSEMBLY DETAIL

OUTLET PIPE

10 GAGE WIRE,

GALVANIZED

GROUND LINE

133 T POSTS

3' LONG

NTS

UNDERDRAIN OUTLET DETAIL

NTS

DRAIN DAYLIGHT PIPE

10 GALVANIZED WIRE

SECURING CLOTH

0.5-IN, 19 GAUGE GALVANIZED HARDWARE

CLOTH (12"X12" SQUARE PIECE FOLDED

OVER PIPE OUTLET)

PLACE WELL GRADED

CLASS 1 RIPRAP

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

4/4 /22

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY AND SANTA BARBARA

RANGER DISTRICTS

DRAINAGE DETAILS

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-10 012 015

1. PERFORATED AND NON-PERFORATED PIPE SHALL BE 6 INCH CORRUGATED HIGH DENSITY POLYETHYLENE (ALTERNATIVES MAY BE SUBMITTED FOR REVIEW BY THE CO).

2. ELBOWS, CAPS, AND TEES ARE INCIDENTAL TO ITEMS 60505 AND 60506.

3. LOCATION OF OUTLET DRAINS SHALL BE APPROVED BY CO AT LEAST 30 FEET DOWNSLOPE AWAY FROM THE SLIDE AREA AND SHALL HAVE POSITIVE DRAINAGE. SITES

WITH MULTIPLE OUTLET DRAINS ARE TO BE DRAINED AT ONE OUTLET RIPRAP PAD.

4. OUTLET PIPE SHALL BE ANCHORED EVERY 15 FEET DOWNSLOPE FROM WALL DRAINING.

5. CONTRACTOR SHALL EXERCISE CARE TO AVOID DAMAGING THE GEOCOMPOSITE UNDERDRAIN DURING CONSTRUCTION. ANY DAMAGE INCURRED TO DRAINAGE

COMPONENTS SHALL BE REPAIRED OR REPLACED AS APPROVED BY CO.

DRAINAGE NOTES

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SLOPE 5%, MIN. DISTANCE

5' IN CENTER OF WALL

(SEE SECTIONS AND PROFILE VIEW)

SEE SECTIONS AND PROFILE VIEW

FOR MINIMUM EMBEDMENT OF

WALL FOUNDATION -- IN NO CASE SHALL

EMBEDMENT BE LESS THAN 4 FEET.

EXISTING RETAINING

WALL STRUCTURES

(TO BE REMOVED AND

DISPOSED OF)

4%

6" AGGREGATE SURFACING

SHALL CONFORM TO SECTION 301,

GRADING G

12'

SLOPE 1.75:1 (H:V)

WALL FILL SHALL BE SELECT GRANULAR

BACKFILL CONFORMING TO 704.08

6" CRUSHED GRAVEL LEVELING

PAD CONFORMING TO 703.06

(INCIDENTAL TO ITEM 25502)

14' MAT LENGTH

1:48 (H:V) BATTER

8"X21" WELDED WIRE MATS,

SIZED PER SPECIFICATIONS

AND DRAWING NOTES

COMPACTED

BACKFILL

3" TO 6" COBBLE

OR ROCK

4"X3" WELDED WIRE BACKING MAT

TO BE PLACED ON EACH LIFT

0.5'

2' MIN

CLASS 2 TYPE E

NONWOVEN GEOTEXTILE

T

Y P

I C

A L

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

4/4 /22

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY AND SANTA BARBARA

RANGER DISTRICTS

MSE WALL DETAILS

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-11 013 015

1. SUBGRADE FOUNDATION AND LEVELING PAD SHALL BE COMPACTED ACCORDING TO SECTION 208, 95% MAXIMUM DRY DENSITY ACCORDING TO AASHTO T 180, METHOD C.

2. WALL FACING SHALL BE ROCK-FACED WITH GEOTEXTILE CONFORMING TO SECTIONS 207 AND 714.01. WALL FACING MATERIALS SHALL BE INCIDENTAL ITEM 25501.

3. WALL BACKFILL SHALL CONFORM TO 704.08, SELECT GRANULAR BACKFILL. BACKFILL SHALL BE PLACED IN COMPACTED LAYERS OF 6 INCHES. COMPACTION SHALL BE

DONE IN ACCORDANCE WITH SECTION 255 AND REFERENCED PORTIONS OF SECTION 209, 95% MAXIMUM DRY DENSITY ACCORDING TO AASHTO T 99, METHOD C.

4. WELDED WIRE MATERIAL SHALL BE HOT-DIPPED GALVANIZED ACCORDING TO AASHTO M111 OR ASTM A123.

5. CONTRACTOR SHALL EXERCISE CARE TO AVOID DAMAGING THE WELDED WIRE GALVANIZATION. ANY DAMAGED GALVANIZATION SHALL BE REPAIRED OR REPLACED AS

APPROVED BY CO.

6. EXISTING RETAINING WALL STRUCTURES AND UNSUITABLE IN-PLACE FILL SHALL BE DISPOSED OF.

7. CONTRACTOR SHALL AVOID CUTTING INTO THE CUT SLOPE AND LEAVE EXISTING CUT SLOPES AS-IS.

8. ROAD WIDTHS OVER THE RETAINING WALL SHALL BE 12 FEET WITH 4% INSLOPE, FOR ROAD SEGMENTS BEFORE AND AFTER THE WALL, SEE APPLICABLE SECTIONS FOR

TRANSITIONS FROM EXISTING WIDTHS AND CROSS-SLOPES.

WALL NOTES

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STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

4/4 /22

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY AND SANTA BARBARA

RANGER DISTRICTS

MSE WALL

INSTALLATION

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-12 014 015

NOTES: THIS PROJECT WAS DESIGNED AS A

HILFIKER WELDED WIRE MESH MSE WALL.

CONTRACTOR MAY SUBMIT A EQUAL PRODUCT.

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STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.

DATE

PROJECT NO.

DRAWING SHEET NO.

DATENO.

REVISION / ISSUE

OFSHEET

United States Department of Agriculture Forest Service

4/4 /22

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(R05)

PACIFIC SOUTHWEST REGION

LOS PADRES

NATIONAL

FOREST

RETAINING WALL

PROJECTS

LOS PADRES NATIONAL

FOREST

MONTEREY AND SANTA BARBARA

RANGER DISTRICTS

ROCK BUTTRESS

DETAILS

03/30/2022

C.LUNDGREEN

C.LUNDGREEN

P.LANE

C-13 015 015

1. SUBGRADE FOUNDATION SHALL BE COMPACTED ACCORDING TO SECTION 208, 95% MAXIMUM DRY DENSITY ACCORDING TO AASHTO T 99, METHOD C.

2. CONTRACTOR SHALL PLACE CLASS I TYPE E NONWOVEN GEOTEXTILE ALONG ALL BUTTRESS-SOIL CONTACT SURFACES.

3. CONTRACTOR SHALL EXERCISE CARE TO AVOID DAMAGING THE GEOTEXTILE AND ROCKFALL NETTING. ANY DAMAGE SHALL BE REPAIRED OR REPLACED AS APPROVED

BY CO.

4. CONTRACTOR SHALL EXERCISE REASONABLE CARE TO AVOID DAMAGING THE EXISTING CRIB WALL.

5. ROAD SHALL HAVE 4% INSLOPE THROUGHOUT AGGREGATE SURFACING. BEGINNING AND END STATIONS CORRESPOND WITH EXISTING 4% INSLOPE OR CLOSE TO.

6. ROCKFALL NETTING REINFORCEMENT LENGTHS FROM BOTTOM TO TOP: 7 FEET, 7 FEET, 6.25 FEET, 6 FEET, 5.5 FEET, AND 5.25 FEET, RESPECTIVELY.

7. CONTRACTOR WILL NEED TO USE SMALLER SIZES OF THE CLASS 4 RIPRAP IN THE REINFORCED ZONE.

BUTTRESS NOTES

PRESERVE EXISTING

CRIB WALL

WRAP ROCKFALL

NETTING OVER FACE

CLASS 4 RIPRAP

4%

ROAD W

ID

TH V

ARIE

S

EXISTING GROUND

8" DIA. CORRUGATED HIGH

DENSITY POLYETHYLENE

DRAINAGE PIPE (PERFORATED)

SEE UNDERDRAIN DETAILS

AND NOTES

5% OUTSLOPED BENCH

V

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R I B

W

A L L

1H:1V

0.75H:1V

4'

7.5'

2.5' 2.5'

1/2H:1V

1/2H:1V

CLASS I TYPE E

NONWOVEN

GEOTEXTILE

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