Changes Attachment 4 - OhleyHollowRd Drawings.pdf
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- Solicitation number
- 12FPC326B0010
About this file
This is a Design Document and Damage Survey Report for a 2025 Emergency Watershed Protection (EWP) streambank stabilization project prepared by the Natural Resources Conservation Service (NRCS) for a site located on Ohley Hollow Road in Kanawha County, West Virginia. The project involves constructing gabion wall streambank stabilization measures totaling 45 linear feet of gabion walls (15 feet of 4.5-foot high wall and 30 feet of 6-foot high wall) to address streambank erosion on an Unnamed Tributary No. 1 to Cabin Creek. The scope of work includes channel clearing and debris disposal, foundation preparation (conditional rebar reinforcement on shallow bedrock or rock riprap placement), gabion wall installation with specific lacing and construction requirements, earthfill placement, and channel bottom restoration to approximately 10 feet width with positive drainage configuration.
The estimated quantities include 44 cubic yards of gabions, 66 square yards of gabion geotextile, as needed earthfill, 23 square yards of shallow bedrock foundation preparation, 79 tons of rock riprap foundation preparation with 113 square yards of geotextile, and zero riprap tons (conditional). Construction specifications address site access restoration, fence removal and reinstallation, subsurface excavation and grading, pollution control measures, traffic control, waste disposal in approved landfills (contractor responsible for tipping fees), pipe extensions through structures, concrete encasement for pipes 12 inches or larger (2500 PSI minimum), and road maintenance during hauling operations. The NRCS representative retains authority to determine actual foundation preparation requirements in the field following excavation, with conditional foundation preparation quantities excluded from the variation in quantity clause. The project utilizes gabion baskets in 6-foot by 3-foot and 6-foot by 4.5-foot configurations with varying depths, requiring 13.5 gauge wire lacing using specific two-one-two looping procedures and interior counterfort support at designated locations.
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LOCATION MAP
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UTILITY NOTIFICATION
"THE NATURAL RESOURCES CONSERVATION SERVICE MAKES NO
REPRESENTATION AS TO THE EXISTENCE OR NON-EXISTENCE OF
ANY UTILITIES AT THE CONSTRUCTION SITE. SHOWN ON THESE
CONSTRUCTION DRAWINGS ARE THOSE UTILITIES WHICH HAVE
BEEN IDENTIFIED. IT IS THE RESPONSIBILITY OF THE
CONTRACTOR(S) TO ASSURE THEMSELVES THAT NO HAZARD
EXISTS OR DAMAGE WILL OCCUR TO UTILITIES."
COVER SHEET
QUANTITIES AND CONSTRUCTION NOTES
LOCATION MAP
SHEET LIST TABLE
SITE MAP
SHEET TITLE
PLAN VIEW
TYPICAL CHANNEL BOTTOM CONFIGURATION
TYPICAL FOUNDATION PREPARATION ON ROCK RIPRAP DETAILS
TYPICAL 4.5' HIGH GABION WALL SECTION & DETAILS
TYPICAL 4.5' HIGH GABION WALL DETAILS
TYPICAL FOUNDATION PREPARATION ON SHALLOW BEDROCK DETAILS
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KANAWHA COUNTY
TYPICAL 6' HIGH GABION WALL SECTION & DETAILS
TYPICAL 6' HIGH GABION WALL DETAILS
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CLASS VI
AutoCAD SHX Text DRAWINGS PREPARED UNDER THE AUTHORITY OF THE EMERGENCY WATERSHED PROTECTION ACT by the NATURAL RESOURCES CONSERVATION SERVICE of the UNITED STATES DEPARTMENT OF AGRICULTURE STREAMBANK STABILIZATION OHLEY HOLLOW ROAD - SITE 2 DAMAGE SURVEY REPORT NO. 54-01-25-5091-001 KANAWHA COUNTY, WEST VIRGINIA ra l R es ou rc es
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* THE AREA REQUIRED FOR OVERLAP IS NOT
INCLUDED IN THE QUANTITY FOR GEOTEXTILE.
SITE 2 - TABLE OF ESTIMATED QUANTITIES
GABION
GEOTEXTILE
SY*
RIPRAP
TONS
GABIONS
CY
EARTH FILL
CY
FOUNDATION PREPARATION
SHALLOW BEDROCK
SY**
FOUNDATION PREPARATION
ROCK RIPRAP
TONS***
FOUNDATION PREPARATION
ROCK RIPRAP GEOTEXTILE
SY***
66 0 44 23 79 113AS NEEDED
** QUANTITIES ASSUMING BEDROCK
ENCOUNTERED FOR ENTIRE LENGTH.
*** QUANTITIES ASSUMING ROCK RIPAP
FOUNDATION FOR ENTIRE AREA.
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CONSTRUCTION NOTES
1. CALL 811 TO LOCATE PUBLIC UTILITIES PRIOR TO MOBILIZATION AND EXCAVATION. IT IS THE
RESPONSIBILITY OF THE CONTRACTOR(S) TO CONSULT WITH LOCAL LANDOWNERS TO
IDENTIFY UNMARKED PRIVATE UTILITIES PRIOR TO WORK BEGINNING. ANY DAMAGE DONE TO
UTILITIES AS A RESULT OF THE CONTRACTOR'S OPERATIONS SHALL BE REPAIRED AND
RESTORED.
2. ACCESS ROADS SHALL BE RESTORED TO PRE-CONSTRUCTION CONDITION OR BETTER.
3. ALL FENCES REMOVED AND/OR DAMAGED AS A RESULT OF THE CONTRACTOR'S OPERATIONS
SHALL BE RESTORED TO A CONDITION EQUAL TO OR BETTER THAN THEY EXISTED BEFORE
THE START OF WORK.
4. SOIL COMPACTED AS A RESULT OF CONSTRUCTION OPERATIONS SHALL BE LOOSENED FOR A
DEPTH OF 6-INCHES BELOW THE COMPACTED SOIL LAYER AND RE-GRADED TO BLEND WITH
EXISTING GROUND.
5. PROVIDE SUB-CHANNEL AS SHOWN ON TYPICAL CHANNEL BOTTOM CONFIGURATION
DRAWING.
6. WHILE WORKING IN THE STREAM ALL EFFORTS WILL BE MADE TO REDUCE DOWNSTREAM
IMPACTS INCLUDING KEEPING THE EXCAVATOR TRACKS ELEVATED ABOVE FLOWING WATER.
A DIVERSION BERM SHALL BE ESTABLISHED AT THE TOP OF EACH STREAM ACCESS POINT TO
MINIMIZE SURFACE WATER FROM FLOWING TOWARD THE STREAM.
7. REQUIRED POLLUTION CONTROL MEASURES SHALL BE INSTALLED AS NEEDED IN
ACCORDANCE WITH CONSTRUCTION SPECIFICATION 5, POLLUTION CONTROL.
8. SITE ACCESS SHALL BE OFF THE MAIN ROAD AND SHALL BE IN ACCORDANCE WITH ALL WEST
VIRGINIA DEPARTMENT OF TRANSPORTATION RULES AND GUIDELINES. THE CONTRACTOR
SHALL PROVIDE SIGNAGE AND FLAGMEN FOR TRAFFIC CONTROL AS REQUIRED. SEE
CONSTRUCTION SPECIFICATION 9, TRAFFIC CONTROL.
9. EXCESS MATERIAL FROM THE EXCAVATION & OBSTRUCTION REMOVAL SHALL BE WASTED
OFF-SITE IN ACCORDANCE WITH ALL LOCAL, STATE, & FEDERAL REGULATIONS AND AS
APPROVED BY THE NRCS REPRESENTATIVE IN THE FIELD. FLOODPLAINS WILL NOT BE
ALLOWED AS WASTE AREAS UNDER ANY CIRCUMSTANCES. WASTE AREAS SHALL BE SEEDED
ACCORDING TO CONSTRUCTION SPECIFICATION 6, SEEDING, SPRIGGING AND MULCHING.
10. THE CONTRACTOR SHALL PROVIDE APPROVED FILL AS REQUIRED TO COMPLETE THE WORK.
SEE CONSTRUCTION SPECIFICATION 23, EARTHFILL AND CONSTRUCTION SPECIFICATION 25
ROCKFILL FOR DETAILS.
11. TRASH, TIRES, & WOODY DEBRIS WITHIN THE WORK LIMITS SHALL BE DISPOSED OF OFF-SITE
IN AN APPROVED LANDFILL. THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE LANDFILL
TIPPING FEES.
12. ALL PIPES ENCOUNTERED IN THE EMBANKMENT SHALL BE EXTENDED THROUGH THE ROCK
RIPRAP AND/OR GABIONS WITH THE SAME PIPE MATERIAL OR BETTER TO THE FACE OF THE
SLOPE OR BASKETS.
13. PIPES 12" DIAMETER AND LARGER SHALL BE ENCASED IN A MINIMUM OF 6" OF CONCRETE
WHEN PASSING THROUGH ROCK RIPRAP AND/OR GABIONS. CONCRETE SHALL HAVE A
MINIMUM COMPRESSIVE STRENGTH OF 2500 PSI.
14. THE CONTRACTOR SHALL MAINTAIN THE CLEANLINESS OF PUBLIC AND PRIVATE ROADS
IMPACTED BY HAULING OPERATIONS DURING THE DURATION OF THE WORK.
15. STARTING LOCATION OF THE STREAMBANK STABILIZATION MEASURE WILL BE MARKED IN THE
FIELD.
16. RESHAPE/TRANSITION THE STREAM'S BANK AT THE UPSTREAM AND DOWNSTREAM ENDS OF
STABILIZATION MEASURES AS DIRECTED BY NRCS REPRESENTATIVE.
17. AFTER THE FOUNDATION IS EXCAVATED, NRCS REPRESENTATIVE SHALL DETERMINE IF
CONDITIONAL FOUNDATION PREPARATION WILL BE REQUIRED AND WHICH TYPE WILL BE USED.
CONDITIONAL FOUNDATION PREPARATION QUANTITIES ARE NOT INCLUDED OR COVERED BY
THE VARIATION IN QUANTITY CLAUSE.
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SITE 2
LAT: N38.105954
LONG: W81.440858
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GABION WALL STREAMBANK STABILIZATION.
SEE DETAILS, SHEETS 5 - 9.
TBM1
0.2 MILES TO CABIN CREEK ROAD
CONSTRUCTION LIMITS
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NAD83 WV STATE PLANE, SOUTH ZONE, US FOOT GRID. NAVD88 VERTICAL DATUM
ELEVATIONEASTINGNORTHINGDESCRIPTION
PROJECT CONTROL
TBM1 - WOOD HUB W/TACK 797.231841436.69403043.62
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2025 Maxar ©CNES (2025) Distribution Airbus DS © 2025 TomTom
X
X X
X X X X X X X
X X
GAS GAS GAS GAS GAS
RESIDENCE
GARAGE
SHED
CAR
PORT
TBM1
CL
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CL
CL
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C L
X X
X
RESTORE ORIGINAL STREAM
BOTTOM WIDTH APPROX 10'
EXISTING STUMP
TO BE REMOVED
EXISTING (3) 4" DIA
DRAIN PIPES.
REMOVE FENCE AS NEEDED.
RE-INSTALL AFTER WORK
HAS BEEN COMPLETED.
AC
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UPSTREAM - BEGIN GABION WALL
FOUNDATION AT ELEVATION 793.5
SEE TYPICAL 4.5' HIGH GABION
WALL DETAILS, SHEETS 6 & 7.
DOWNSTREAM - END GABION WALL
FOUNDATION AT ELEVATION 792.3
SEE TYPICAL 6' HIGH GABION WALL
DETAILS, SHEETS 8 & 9.
EXISTING SHED, DO NOT DISTURB.
CAR PORT REMOVED BY OTHERS.
OHLEY HOLLOW ROAD
UNNAMED TRIBUTARY NO. 1 TO CABIN CREEK
X
G
AS
EXISTING GATE
30' OF 6' HIGH
GABION WALL
15' OF 4.5' HIGH
GABION WALL
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LEGEND
TOP OF BANK
TOE OF SLOPE
EXISTING FENCEX
CONSTRUCTION LIMITSCL
CONTROL POINT
NOTES
1. CHANNEL CLEARING AND DEBRIS DISPOSAL SHALL BE DIRECTED BY
THE NRCS REPRESENTATIVE.
2. BORROW MATERIAL SHALL BE TAKEN FROM WITHIN THE
CONSTRUCTION LIMITS AS DIRECTED BY THE NRCS REPRESENTATIVE.
3. DISPOSAL AREA FOR EXCAVATED MATERIAL AND DEBRIS SHALL BE AT
AN APPROVED LOCATION OFFSITE.
4. GABION WALL ALIGNMENT, LAYOUT, LENGTH AND HEIGHT MAY VARY
AS DETERMINED BY THE NRCS REPRESENTATIVE.
5. FILL MATERIAL BEHIND GABIONS SHALL BE FROM CHANNEL SHAPING
AND/OR STOCKPILED MATERIAL AS DIRECTED BY THE NRCS
REPRESENTATIVE.
UTILITY POLE
TBM#
SEWER MAN HOLE
WATER METER
UNDERGROUND GAS LINEGAS
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Leslie.Sears Line
Leslie.Sears Line
Leslie.Sears Callout Temporarily Configure Fence to Provide Enclosure for Landowners Dog. Chain Link Fence or Other Materials May be Used.
Leslie.Sears Callout Potential Abandoned Septic Tank. If Didsturbed, Decommission As Stated in Mobilization Specification
Leslie.Sears Callout Pet Cemetery Located Between Swing and Gargage. Do Not Disturb.
Leslie.Sears Oval
SECTION - 4.5' HIGH GABION WALL
2' MIN. EMBEDMENT OR TO BEDROCK. BEDROCK
ENCOUNTERED 0'- 2' BELOW CHANNEL BOTTOM,
SEE FOUNDATION PREPARATION SHALLOW
BEDROCK DETAIL, SHEET 10.
6'x 4.5'x 3'
2' MIN. 1' MIN.
LOWEST POINT
IN STREAM
EXCAVATION LIMITS
FILL PER NOTE 5, THIS SHEET.
EXCAVATION LIMITS
GEOTEXTILE
2.5'
EXISTING
GROUND
TYP.
1.5'
1 POSITIVE DRAINAGE
4.5' MIN.
NOTES
1. SEE TYPICAL CHANNEL BOTTOM CONFIGURATION SHEET 12.
2. REFER TO SHEET 2 FOR ESTIMATED QUANTITIES.
3. AFTER THE FOUNDATION IS EXCAVATED, NRCS
REPRESENTATIVE SHALL DETERMINE IF FOUNDATION
TREATMENT WILL BE REQUIRED AND TYPE. SEE
CONDITIONAL FOUNDATION DETAILS ON SHEETS 10 & 11.
4. THE CONTRACTOR SHALL ONLY EXCAVATE THE AMOUNT OF
FOUNDATION NEEDED TO INSTALL THE BOTTOM LAYER OF
GABION WALL INTENDED TO PLACE PER MANUFACTURER'S
RECOMMENDATIONS DURING THE SAME WORKDAY.
5. PLACE FILL BEHIND EACH LAYER OF GABIONS AS THE
LAYERS PROGRESS VERTICALLY. FILL MATERIAL SHALL BE
APPROVED AND BE FREE OF TRASH, CONCRETE, WOODY
DEBRIS, ETC. SEE CONSTRUCTION SPECIFICATION 23,
EARTHFILL AND CONSTRUCTION SPECIFICATION 25,
ROCKFILL FOR DETAILS.
6. THE CONTRACTOR SHALL CONSERVE SUITABLE MATERIALS
FOR FINAL GRADING AND SEEDING OPERATIONS.
1' (MIN.)
BACKFILL
OR FLATTER BASED
ON ACTUAL SITE
CONDITIONS
9.5
6°
FINAL GRADE. SEE TYPICAL
CHANNEL BOTTOM CONFIGURATION
ON SHEET 12.
EXISTING CHANNEL
BOTTOM
12' (MAX.) LEADING
EXCAVATION
SEE NOTE 4
BACKFILL AND NEXT LAYER
TRAILING COMPLETED
LOWER LAYER
WHEN MORE GABIONS ARE INTENDED,
LEAVE LAST GABION EMPTY TO
FACILITATE LACING THE NEXT AS
PLACEMENT PROGRESSES.
PROFILE - GABION
PLACEMENT/FILLING SEQUENCE
FOUNDATION GRADE
BOTTOM LAYER
9' (MIN.) COMPLETED LOWER LAYER IN
ADVANCE OF BACKFILL OF ADJACENT
GABIONS AND START OF NEXT LAYER
6'x 3'x 1.5'
UPSTREAM - BEGIN GABION WALL
FOUNDATION AT ELEVATION 793.5
SEE NOTE 4, SHEET 5.
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CONSTRUCTION NOTES
1. EACH VERTICAL SEAM SHALL BE LACED PRIOR TO SETTING BASKET
IN PLACE AND PRIOR TO LACING TO ADJOINING BASKETS.
2. EACH BASKET SHALL BE LACED TO THE ADJOINING BASKET AT ALL
VERTICAL EDGES AND HORIZONTAL EDGES.
3. EACH DIAPHRAGM SHALL BE LACED TO THE LID OF THE BASKET
AFTER CLOSING. DIAPHRAGM SHALL BE LACED ALONG ALL SIDES.
4. ALL LACING SHALL BE DONE WITH 13.5 GAUGE WIRE USING THE TWO,
ONE, TWO, LOOPING PROCEDURE AS SHOWN IN THE LACING DETAILS.
5. ALL WIRE SHALL BE TIGHTLY LACED AND THE ENDS OF THE LACING
WIRE SHALL BE DOUBLED BACK AND TWISTED NOT LESS THAN THREE
TURNS AROUND ITSELF IN A LENGTH NOT GREATER THAN ONE INCH.
6. INSTALL ACCORDING TO MANUFACTURER'S RECOMMENDATIONS.
7. GABION BASKET LENGTH MAY VARY FROM TYPICAL LAYER DIAGRAM
WHERE APPLICABLE TO STAGGER SEAM WITH LAYER BELOW AS
APPROVED BY THE NRCS REPRESENTATIVE.
4.5' HIGH GABION WALL
WITH COUNTERFORT
1/3 H
1/3 H
1/3 H
1/3 L 1/3 L
1/3 L
INTERIOR SUPPORT DETAIL
5"5"
LACING DETAIL
1/3 L 1/3 L
1/3 L
LA
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LAYER 1
4.
5'
6'x 4.5'x 3'
6' x
3' x
1.
5'
LAYER 2 LAYER 1
FR
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FR
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FA
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6' x
3' x
1.
5'
4.5' 3'
10.5'
COUNTERFORT
LAYER DIAGRAM
INSTALL COUNTERFORT
AT BOTH ENDS OF
GABION WALL.6'
9'x 3'x 1.5'
6'x 3'x 1.5'
6'x 4.5'x 3'
6'x 4.5'x 3'
6'x 3'x 3'
WIRE DOUBLED BACK
AND TWISTED
6'x 4.5'x 3'
6'x 4.5'x 3' 6'x 3'x 1.5'
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SECTION - 6' HIGH GABION WALL
2' MIN. EMBEDMENT OR TO BEDROCK. BEDROCK
ENCOUNTERED 0'- 2' BELOW CHANNEL BOTTOM,
SEE FOUNDATION PREPARATION SHALLOW
BEDROCK DETAIL, SHEET 10.
6'x 4.5'x 3'
2' MIN. 1' MIN.
LOWEST POINT
IN STREAM
EXCAVATION LIMITS
FILL PER NOTE 5, THIS SHEET.
EXCAVATION LIMITS
GEOTEXTILE
4'
EXISTING
GROUND
TYP.
1.5'
1 POSITIVE DRAINAGE
4.5' MIN.
1' (MIN.)
BACKFILL
OR FLATTER BASED
ON ACTUAL SITE
CONDITIONS
9.5
6°
FINAL GRADE. SEE TYPICAL
CHANNEL BOTTOM CONFIGURATION
ON SHEET 12.
EXISTING CHANNEL
BOTTOM
12' (MAX.) LEADING
EXCAVATION
SEE NOTE 4
BACKFILL AND NEXT LAYER
TRAILING COMPLETED
LOWER LAYER
WHEN MORE GABIONS ARE INTENDED,
LEAVE LAST GABION EMPTY TO
FACILITATE LACING THE NEXT AS
PLACEMENT PROGRESSES.
PROFILE - GABION
PLACEMENT/FILLING SEQUENCE
FOUNDATION GRADE
BOTTOM LAYER
9' (MIN.) COMPLETED LOWER LAYER IN
ADVANCE OF BACKFILL OF ADJACENT
GABIONS AND START OF NEXT LAYER
6'x 3'x 3'
NOTES
1. SEE TYPICAL CHANNEL BOTTOM CONFIGURATION SHEET 12.
2. REFER TO SHEET 2 FOR ESTIMATED QUANTITIES.
3. AFTER THE FOUNDATION IS EXCAVATED, NRCS
REPRESENTATIVE SHALL DETERMINE IF FOUNDATION
TREATMENT WILL BE REQUIRED AND TYPE. SEE
CONDITIONAL FOUNDATION DETAILS ON SHEETS 10 & 11.
4. THE CONTRACTOR SHALL ONLY EXCAVATE THE AMOUNT OF
FOUNDATION NEEDED TO INSTALL THE BOTTOM LAYER OF
GABION WALL INTENDED TO PLACE PER MANUFACTURER'S
RECOMMENDATIONS DURING THE SAME WORKDAY.
5. PLACE FILL BEHIND EACH LAYER OF GABIONS AS THE
LAYERS PROGRESS VERTICALLY. FILL MATERIAL SHALL BE
APPROVED AND BE FREE OF TRASH, CONCRETE, WOODY
DEBRIS, ETC. SEE CONSTRUCTION SPECIFICATION 23,
EARTHFILL AND CONSTRUCTION SPECIFICATION 25,
ROCKFILL FOR DETAILS.
6. THE CONTRACTOR SHALL CONSERVE SUITABLE MATERIALS
FOR FINAL GRADING AND SEEDING OPERATIONS.
DOWNSTREAM - END GABION WALL
FOUNDATION AT ELEVATION 792.3
SEE NOTE 4, SHEET 5.
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CONSTRUCTION NOTES
1. EACH VERTICAL SEAM SHALL BE LACED PRIOR TO SETTING BASKET
IN PLACE AND PRIOR TO LACING TO ADJOINING BASKETS.
2. EACH BASKET SHALL BE LACED TO THE ADJOINING BASKET AT ALL
VERTICAL EDGES AND HORIZONTAL EDGES.
3. EACH DIAPHRAGM SHALL BE LACED TO THE LID OF THE BASKET
AFTER CLOSING. DIAPHRAGM SHALL BE LACED ALONG ALL SIDES.
4. ALL LACING SHALL BE DONE WITH 13.5 GAUGE WIRE USING THE TWO,
ONE, TWO, LOOPING PROCEDURE AS SHOWN IN THE LACING DETAILS.
5. ALL WIRE SHALL BE TIGHTLY LACED AND THE ENDS OF THE LACING
WIRE SHALL BE DOUBLED BACK AND TWISTED NOT LESS THAN THREE
TURNS AROUND ITSELF IN A LENGTH NOT GREATER THAN ONE INCH.
6. INSTALL ACCORDING TO MANUFACTURER'S RECOMMENDATIONS.
7. GABION BASKET LENGTH MAY VARY FROM TYPICAL LAYER DIAGRAM
WHERE APPLICABLE TO STAGGER SEAM WITH LAYER BELOW AS
APPROVED BY THE NRCS REPRESENTATIVE.
6' HIGH GABION WALL
WITH COUNTERFORT
1/3 H
1/3 H
1/3 H
1/3 L 1/3 L
1/3 L
INTERIOR SUPPORT DETAIL
5"5"
LACING DETAIL
1/3 L 1/3 L
1/3 L
6'x 4.5'x 3'
6' x
3' x
3'
LAYER 2 LAYER 1
FR
O
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FA
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FR
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FA
C
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6' x
3' x
3'
4.5' 3'
LAYER DIAGRAM
INSTALL COUNTERFORT 6' FROM
DOWNSTREAM END OF GABION WALL.
6'x 4.5'x 3'
WIRE DOUBLED BACK
AND TWISTED
LA
YE
R
LA
YE
R
6'
6'
9'x 3'x 3'
6'x 3'x 3'
6'x 4.5'x 3'
6'x 4.5'x 3'
6'x 4.5'x 3'6'x 3'x 3'
1.5'
COUNTERFORT
6'
GABION WALLEND
6'x 3'x 3'
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1.25'
(TYP.)
VARIES
VA
R
IE
S
1' MIN. TO 1.5' MAX.
0' TO 2' MAX.
CHANNEL BOTTOM
1.5'
2.5'
PROFILE - GABIONS WITH REBAR SPACING
BEDROCK
1.25' MAX.
(TYP.)
2.
5'
M
AX
(T
YP
1.25' (TYP.)
NO. 10 REBAR
(TYP.)
NO. 10 REBAR
(TYP.)
G
AB
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N
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VARIES
FOUNDATION PREPARATION PAYMENT LIMITS
1' MIN. TO 1.5' MAX.
FO
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PLAN - GABIONS WITH REBAR/DRILLHOLE PATTERN
0' TO 2' MAX.
VA
R
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S
1.5'
2.5'
2.5' MAX.
(TYP.)1' MIN. TO 1.5' MAX.
FINAL GRADE
SECTION - GABIONS WITH REBAR SPACING
MAXIMUM ANGLE OF
REBAR/DRILLHOLE PATTERN
~1.5'
~2.5'
15° MAX.
VERTICAL NO. 10 REBAR
(TYP.)
MAX. TILT OF
REBAR/DRILLHOLE
FRONT OF
GABION
BACK OF
GABION
CHANNEL BOTTOM
BEDROCK
1' MAX.
BEDROCK
FOUNDATION PREPARATION SHALLOW BEDROCK
CONDITIONAL APPLICATION. THIS ITEM MAY OR MAY NOT BE USED.
SEE CONSTRUCTION NOTE 17, SHEET 2.
NOTES:
1. DRILL HOLES FOR REBAR SHALL BE 1 3/8" DIAMETER. THE USE OF EPOXY OR NON-SHRINK GROUT IS NOT REQUIRED. THE REBAR SHALL BE DRIVEN BY HAMMER TO THE REQUIRED DEPTH WITHOUT
BENDING.
2. CARE SHALL BE TAKEN BY THE CONTRACTOR TO PREVENT DAMAGE TO THE REBAR DURING
GABION FILLING OPERATIONS.
3. DIFFERENT GABION BOTTOM LAYER CONFIGURATIONS WILL REQUIRE ADDITIONAL REBAR BY
REPEATING THE PATTERN SHOWN. QUANTITIES ON SHEET 2 BASED ON BOTTOM WIDTH X
LENGTH.
4. FINAL PATTERN AND SPACING TO BE DIRECTED BY NRCS REPRESENTATIVE IN THE FIELD.
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9.5
6°
FINAL
GRADE
EXCAVATION LIMITS. FILL AFTER
GABION INSTALLATION. SEE NOTE
10, SHEET 2.
POSITIVE DRAINAGE
SECTION - GABION WALL
1.5'
3' MIN.
VA
R
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S
FOUNDATION PREPARATION PAYMENT LIMITS
VARIES WITH GABION CONFIGURATION.
ASSUMED 10.5' FOR QUANTITIES ON SHEET 2.
NRCS REPRESENTATIVE WILL DETERMINE
DEPTH OF ROCK RIPRAP IN THE FIELD.
ASSUMED 3' FOR QUANTITIES ON SHEET 2.
GEOTEXTILE
0.6'
ROCK RIPRAP,
6"- 18" GRADATION.
OR FLATTER BASED ON
ACTUAL SITE CONDITIONS
2' MIN. BACKFILL
NRCS REPRESENTATIVE WILL DETERMINE
DISTANCE BASED ON ACTUAL SITE CONDITIONS
ASSUMED 3' FOR QUANTITIES ON SHEET 2.
FINAL GRADE. SEE TYPICAL CHANNEL
BOTTOM CONFIGURATION ON
SHEET 12.
FOUNDATION PREPARATION ROCK RIPRAP
CONDITIONAL APPLICATION. THIS ITEM MAY OR MAY NOT BE USED.
SEE CONSTRUCTION NOTE 17, SHEET 2.
FOUNDATION
LAYER
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EXISTING
GROUND
FINAL CHANNEL BOTTOM SHALL
BE ROUGH & IRREGULAR.
PROVIDE POSITIVE DRAINAGE
TOWARD SUBCHANNEL.
~1
~1
1'
1/3 BW
SUBCHANNEL
BOTTOM WIDTH (BW)
SEE PLAN VIEW
~2
CHANNEL BOTTOM CONFIGURATION
STREAMBANK STABILIZATION
MEASURE, GABION WALL OR
ROCK RIPRAP SLOPE.
DEPOSITION REMOVAL
VARIES
NOTES:
1. FINAL LOCATION OF SUBCHANNEL TO BE LOCATED IN THE FIELD BY THE NRCS
REPRESENTATIVE. THE SUBCHANNEL SHALL BE TRANSITIONED AS NECESSARY TO
MEET EXISTING GRADES AT THE UPSTREAM AND DOWNSTREAM SITE EXTENTS.
2. SUBCHANNELS ARE NOT REQUIRED FOR BEDROCK STREAMBEDS.
3. USE MATERIAL FROM THE REQUIRED EXCAVATIONS AND/OR APPROVED FILL FROM
OFFSITE TO RECONSTRUCT STREAMBANKS AS NECESSARY. SEED AND MULCH PER
CONSTRUCTION SPECIFICATION 6, SEEDING, SPRIGGING AND MULCHING.
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| Sheets and Views |
| 8.5x11 Cover |
| KC-OHR_2-Quantities&Notes.pdf |
| Sheets and Views |
| 2-QuantitiesNotes |
| KC-OHR_3-LocationMap.pdf |
| Sheets and Views |
| 8.5x11 Landscape |
| KC-OHR_4-SiteMap.pdf |
| Sheets and Views |
| 8.5x11 Portrait |
| KC-OHR_5-PlanView.pdf |
| Sheets and Views |
| 8.5x11 Portrait |
| KC-OHR_6-Typ4ftGabSec.pdf |
| Sheets and Views |
| 6_4.5FT-SEC |
| KC-OHR_7-Typ4ftGabDetails.pdf |
| Sheets and Views |
| 7_4.5FT-GABION DETAILS |
| KC-OHR_8-Typ6ftGabSec.pdf |
| Sheets and Views |
| 8_6FT-SEC |
| KC-OHR_9-Typ6ftGabDetails.pdf |
| Sheets and Views |
| 9_6FT-GABION DETAILS |
| KC-OHR_10-TypBedrock.pdf |
| Sheets and Views |
| 12-TYP BEDROCK |
| KC-OHR_11-TypRiprap.pdf |
| Sheets and Views |
| 13-RIPRAP FOUNDATION |
| KC-OHR_12-TypChanConf.pdf |
| Sheets and Views |
| 14-TYP CHANNEL |
| KC-OHR_4-SiteMap.pdf |
| Sheets and Views |
| 8.5x11 Portrait |
| KC-OHR_5-PlanView.pdf |
| Sheets and Views |
| 8.5x11 Portrait |
| KC-OHR_1-Cover.pdf |
| Sheets and Views |
| 8.5x11 Cover |
| KC-OHR_1-Cover.pdf |
| Sheets and Views |
| 8.5x11 Cover |
File details come from the government source that posted it. Updated .