Attachment 2 Drawings Dixon and McGraw Run.pdf

DRAWINGS PREPARED UNDER THE AUTHORITY OF

THE EMERGENCY WATERSHED PROTECTION ACT

BY THE NATURAL RESOURCES CONSERVATION SERVICE

OF THE UNITED STATES DEPARTMENT OF AGRICULTURE

DIXON & MCGRAW RUN SITES 1, 2,& 3

STREAMBANK STABILIZATION

DSR 54-02-25-5090-001

OHIO COUNTY, WEST VIRGINIA

INDEX TO DRAWINGS

SHEET DESCRIPTION

1 COVER SHEET

2 CONSTRUCTION NOTES AND QUANTITIES

3 OVERALL SITE MAP

4 SITE 1 - PLAN VIEW

5 SITE 2 - PLAN VIEW

6 SITE 3 - PLAN VIEW

7 ROCK RIPRAP TYPICAL SECTION

8 TYPICAL RIPRAP CHANNEL BOTTOM CONFIGURATION

9 TYPICAL 9' GABION DETAILS

10 9' GABION COUNTERFORT DETAILS

11 TYPICAL 7.5' GABION DETAILS

12 7.5' GABION COUNTERFORT DETAILS

13 TYPICAL 6' GABION DETAILS

14 6' GABION COUNTERFORT DETAILS

15 TYPICAL 4.5' GABION DETAILS

16 4.5' GABION COUNTERFORT DETAILS

17 GABION LACING DETAILS

18 TYPICAL FOUNDATION PREPARATION ON SHALLOW BEDROCK DETAILS

19 TYPICAL FOUNDATION PREPARATION ON ROCK RIPRAP DETAILS

20 TYPICAL GABION CHANNEL BOTTOM CONFIGURATION

CALL

BEFORE YOU DIG

STOP

1-800-245-4848 www.muwv.org

MISS UTILITY OF

WEST VIRGINIA, INC.

IT'S THE LAW!

K E N T U C K Y

O H I O

V I R G

I N I A

P E N N S Y L V A N I A

M A R Y L A N D

JOB APPROVAL

CLASS - V

SITE LOCATION(S)

SITE 1

40° 5' 7" N 80° 35' 34" W

SITE 2

40° 4' 59" N 80° 35' 27" W

SITE 3

40° 5' 20" N 80° 34' 17" W

SITE LOCATION

* The area required for overlaps is not included in the quantity for geotextile.

**Estimates allow for both shallow and rock riprap foundation prep for the entire length of the site.

Table of Estimated Quantities

Site Geotextile

(SY)

Rock Riprap

(TN)

Gabions*

(CY)

Earth Fill

(CY)

Foundation Preparation Shallow

Bedrock

**(SY)

Foundation Preparation Rock Riprap

**(TN)

Foundation Preparation Rock Riprap Geotextile

*(SY)

CONSTRUCTION NOTES

1. Access roads shall be restored to pre-construction condition or better.

2. All fences, sidewalks, driveways, retaining walls, and pedestrian bridge 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.

3. Call 811 to locate utilities prior to mobilization and excavation. Verify location and protect the existing utilities in close proximity to the work area including but not limited to utility poles, manholes, water line, and gas line.

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 drawings.

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. Site access shall be off the main road and shall be in accordance with all West Virginia Department of Highways rules and guidelines. The contractor shall provide signage and flagmen for traffic control as required.

7. After the foundation is excavated, NRCS representative shall determine if foundation preparation will be required and type. Foundation preparation quantities not included or covered by the variation in quantity clause.

8. Reshape/transition stream banks at the upstream and downstream ends of stabilization measures as directed by NRCS representative.

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. 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.

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. The contractor shall maintain the cleanliness of public and private roads impacted by hauling operations during the duration of the work.

14. Required pollution control measures shall be installed as needed in accordance with

Construction Specification 5, Pollution Control.

SITE 1

ROCK RIPRAP

SITE 2

GABIONS

DIXON RUN ROAD

STREAM

THALWEG

DIXON RUN

SITE 3

ROCK RIPRAP

STREAM

THALWEG

MCGRAW RUN

MCGRAW RUN ROAD

Feet 0 1000 2000

SITE LOCATION(S)

SITE1

40° 5' 7" N 80° 35' 34" W

SITE1

40° 4' 59" N 80° 35' 27" W

SITE 3

40° 5' 20" N 80° 34' 17" W

Feet 0 20 40

CENTERLINE STREAM

THALWEG DIXON RUN

~18' STREAM BOTTOM WIDTH

40° 5' 6.89" N 80° 35' 34.19" W

HOUSE

PARKING

AREA

DIXON RUN ROAD

EXISTING TWIN

36" CULVERTS

FENCE

20' RIPRAP STABILIZATION

4' BANK HEIGHT & 2' KEY @ 2:1 SLOPE

D50 = 15", THICK = 30"

(SEE DETAIL SHEET 7)

PARKING

AREA

ROCK RIPRAP KEY @ START/END

OF TREATMENT AREA

STAKED BY NRCS REP

(SEE DETAIL SHEET 5)

STAGING AREA

LIMITS OF

CONSTRUCTION

DRAINAGE DITCH

EXISTING GABIONS

Feet 0 20 40

STREAM THALWEG

DIXON RUN

~18' BOTTOM

STREAM WIDTH

40° 4' 59.13" N 80° 35' 27.1" W

HOUSE

(DO NOT DISTURB

HOUSE FOOTING)

PORCH

PARKING

AREA

DIXON RUN ROAD

CHANNEL BLOCKAGE

REMOVAL OF MATERIAL FOR FINISHED

STREAM CHANNEL SHAPING

EXISTING STATE

ROAD CULVERT

STATE ROAD

RIPRAP

4.5' COUNTERFORT

(SEE DETAIL SHEET 16)

6' COUNTERFORT

(SEE DETAIL SHEET 14)

9' COUNTERFORT

(SEE DETAIL SHEET 10)7.5' COUNTERFORT

(SEE DETAIL SHEET 12)

6' COUNTERFORT

(SEE DETAIL SHEET 14)

EXISTING W

ALL

(DO NOT DISTURB)

STA: 0+78 - 1+02

4.5' GABION WALL

(SEE DETAIL SHEET 15)

STA: 0+36 - 0+78

6' GABION WALL

(SEE DETAIL SHEET 13)

STA: 0+12 - 0+36

7.5' GABION WALL

(SEE DETAIL SHEET 11)

STA: 0+00 - 0+12

9' GABION WALL

(SEE DETAIL SHEET 9)

STAGING

AREA

LIMITS OF

CONSTRUCTION

EXISTING 4" PIPE

MAINTAIN THROUGH

6' GABION WALL

EXISTING TREES

REMAIN

OVERHEAD UTILITY

CONSTRUCTION ACCESS

TOP OF BANK

BANK TOE

0+

0+

1+ 001+

40° 5' 6.89" N 80° 35' 34.19" W

Feet 0 40 80

35 LF ROCK RIPRAP STABILIZATION

D50 = 15" (8"-22" WELL GRADED ROCK)

3' BANK HEIGHT & 2' KEY @ 2:1

~70 TONS

STREAM CENTERLINE

~8-10' STREAM BOTTOM WIDTH

ROCK RIPRAP KEY @ START AND

END OF TREATMENT AREA

STAKED BY NRCS REPRESENTATIVE

(SEE DETAILS SHEET 4)

STAGING

AREA

ESTABLISH 5'

OFFSET FROM

EDGE OF HOUSE

LIMITS OF CONSTRUCTION

EXISTING STRUCTURES

EXISTING CONCRETE

WALL

MCGRAW RUN

~1.7% GRADE

EXISTING BRIDGE

OBSTRUCTION REMOVAL AS NEEDED PER

CON. SPEC. 4 - CHANNEL CLEARING AND SHAPING,

OR AS DIRECTED BY THE NRCS REPRESENTATIVE

DRIVEWAY

MCGRAWS RUN RD

2' Min

6'

Rock Riprap D50 = 15" 8"-22" Well Graded Rock See Specification for Details

3'

2' Key Excavation Limits

Geotextile Stream Bottom Including Subchannel

TYPICAL RIPRAP

SECTION

FlowRiprap

5'

5' Geotextile

2.5'

Note:

Key shall extend from the toe of the Riprap slope to the top of the Riprap slope.

Approximate Existing Ground

2.5'

Provide Positive Drainage Into Stream Bank Extends 1.0' Min. Above Riprap.

RIPRAP KEY @ UPSTREAM AND

DOWNSTREAM END

NOT TO SCALE

7'

9.5

6°

TYPICAL GABION WALL 9 FEET HIGH

Geotextile

Provide Positive

Drainage

Excavation Limits, Backfill With Existing

On-Site Rockfill Materials After Gabion Installation

Finished Grade Stream Bottom (See Channel Bottom Configuration Sheet 20)

2' Min.

2' Min. Embedment or to Bedrock, Whichever is Less

If Bedrock is Less than Two Feet, then See Foundation Preparation on Shallow

Bedrock (Sheet 18)

3'x3'x6'

4.5'x3'x12'

3'x3'x6'1.5'

1.5'

1' Minimum

0.63'

Excavation Limits, Backfill After Gabion

Installation

6'

12'

9'

9'

TYPICAL COUNTERFORT DETAILS

9 FT. GABION WALL

Counterfort

1.5'

1.5'

1.5'

1.5'

9'

NOT TO SCALE

3'x3'x6'

3'x3'x6'

3'x3'x6'

3'x3'x6'

3'x3'x6'

4.5'x3'x12'

3'x3'x12'

3'x3'x9'

3'x3'x9'

3'x3'x6'

3'x3'x6'

5.5' 9.5

6°

TYPICAL GABION WALL 7.5 FEET HIGH

Geotextile

Provide Positive

Drainage

2' Min.

3'x3'x6'

4.5'x3'x12'

1.5'

1.5'

1' Minimum

0.5'

Excavation Limits, Backfill After Gabion

Installation

1.5'x3'x6'

NOT TO SCALE

Finished Grade Stream Bottom (See Channel Bottom Configuration Sheet 20)

2' Min. Embedment or to Bedrock, Whichever is Less

If Bedrock is Less than Two Feet, then See Foundation Preparation on Shallow

Bedrock (Sheet 18)

Excavation Limits, Backfill With Existing

On-Site Rockfill Materials After Gabion Installation

9'

TYPICAL COUNTERFORT DETAILS

7.5 FT. GABION WALL

1.5'

1.5'

1.5' 9'

Counterfort

1.5'

NOT TO SCALE

3'x3'x6'

3'x3'x6'

3'x3'x6'

3'x3'x6'

3'x3'x6'

4.5'x3'x12'

3'x3'x12'

3'x3'x9'

1.5'x3'x9'

1.5'x3'x6'

1.5'x3'x6'

7.5'

3'x3'x4.5'

4'

9.5

6°

TYPICAL GABION WALL 6 FEET HIGH

Provide Positive

Drainage

2' Min.

1.5'

1' Minimum

0.5' Geotextile

Excavation Limits, Backfill After Gabion Installation

4" Pipe Through Gabion Basket Wall

NOT TO SCALE

Finished Grade Stream Bottom (See Channel Bottom Configuration Sheet 20)

2' Min. Embedment or to Bedrock, Whichever is Less

If Bedrock is Less than Two Feet, then See Foundation Preparation on Shallow

Bedrock (Sheet 18)

3'x3'x12'

Excavation Limits, Backfill After Gabion Installation

Excavation Limits, Backfill With Existing

9'

TYPICAL COUNTERFORT DETAILS

6 FT. GABION WALL

Counterfort

1.5'

1.5'

NOT TO SCALE

3'x3'x4.5'

3'x3'x12'

3'x3'x9'

3'x3'x12'

3'x3'x4.5'

3'x3'x4.5'

1.5'x3'x12' 2.5'

9.5

6°

TYPICAL GABION WALL 4.5 FEET HIGH

Provide Positive

Drainage

Excavation Limits

2' Min.

1.5'

1' Minimum

0.5' Geotextile

Excavation Limits, Backfill After Gabion Installation

NOT TO SCALE

Finished Grade Stream Bottom (See Channel Bottom Configuration Sheet 20)

2' Min. Embedment or to Bedrock, Whichever is Less

If Bedrock is Less than Two Feet, then See Foundation Preparation on Shallow

Bedrock (Sheet 18)

Excavation Limits, Backfill With Existing

9'

TYPICAL COUNTERFORT DETAILS

4.5 FT. GABION WALL

Counterfort

1.5'

1.5'

NOT TO SCALE

3'x3'x4.5'

3'x3'x4.5'

3'x3'x4.5'

3'x3'x4.5'

1.5'x3'x12'

3'x3'x12'

1.5'x3'x9'

4.5'

1/3 H

1/3 H

1/3 H

1/3 L 1/3 L

1/3 L 1/3 W

1/3 W 1/3 W

INTERIOR SUPPORT DETAIL

TIERED BASKET TO BASKET

LACING PLAN

VERTICAL EDGE

5" 5" WIRE DOUBLED

BACK AND TWISTED

LACING DETAIL

12' BASKET

VERTICAL EDGE

TOP EDGE

TOP EDGE

6' BASKET

12' BASKET

TOP EDGE

TOP EDGE

VERTICAL EDGE

ADJACENT BASKET TO BASKET

LACING PLAN

BASKET LIDBASKET LID

DIAPHRAGM

DIAPHRAGM

VERTICAL EDGE

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 detail.

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 manufacturers recommendations.

7. Gabion basket length may vary from typical layer diagram where applicable to stagger seam with layer below as approved by NRCS representative.

Bedrock

Plan View of Planned Gabions & Rebar/Drillhole Pattern

1' Max

Varies

Profile View of Proposed Gabions with Rebar Spacing

1' Max

1' Min to 1.5' Max

Maximum Angle of Rebar/Drillhole Pattern

15°'

Back of BasketFront of Basket

Bedrock

Vertical No. 10 Rebar

Max Tilt of Rebar/Drillhole

Front of Basket Streamside

0' to 2' Max

Stream Bottom

Note:

1. Drill holes for Rebar shall be 13

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 basket configurations will require additional rebar by repeating the pattern shown.

4. Final pattern and spacing to be directed by NRCS representative in the field.

Foundation Preparation Payment Limits

Varies

Varies

Stream Bottom

1.25'No. 10 Rebar Typical

1.25' 1.25'

No. 10 Rebar Typical

2.5' Max.

1.25'

2.5' Max.

2.5' Max. 2.5' Max.

Foundation Preparation Payment Limits

4.5'

2.5'

1.5'

~1.5'

~2.5'

FOUNDATION PREPARATION on SHALLOW BEDROCK (Use When Bedrock is Less than Two Feet From Stream Bottom)

Conditional

1' Min to 1.5' Max

NOT TO SCALE

1' Min to 1.5' Max Typical Each Side

Section View of Proposed Gabions with Rebar Spacing

Bedrock

Back of Basket Backfill

0' to 2.0' Max

Varies

2.5'

No. 10 Rebar

1.5'

2.5'

Varies See Site Map Sheet 5 9.5

6°

Section - Gabion Wall

Geotextile

Provide Positive

Drainage

Finished Grade Stream Bottom

Depth of Rock of Foundation to be Determined by NRCS

Representative in Field.

Assumed 3' in Design.

Foundation Preparation Payment Limits

( Varies with Gabion Configuration) Assumed Gabion Base Width + 6'

Rock Riprap Foundation Preparation 6"-18" Gradation

3' Min.

NRCS Representative will determine distance based on actual site conditions. Assumed

3' for quantities on Sheet 2.

Geotextile

Excavation Limits, Backfill After Gabion

Installation

1.5'

1.5'

0.62'

Not to Scale

2'

Foundation Preparation Rock Riprap Conditional

Excavation Limits, Backfill With Existing

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.

4. Actual gabion configuration and height may vary as directed by the NRCS representative.

Varies

1/3 BW

~ 1

Provide Positive Drainage

~2

~1

~1

Final Stream Bottom Shall be Rough & Irregular Provide Positive Drainage Toward Subchannel Deposition (Varies)

Existing Groundline

Subchannel

Bottom Width (BW)

Channel Bottom Configuration