ATT2_Drawings.pdf

PROJECT LOCATION AND TRAIL ROUTING

& PROJECT MAP KEY

SCALE: 1" = 800'

400'

0'

400' 800'

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NATIONAL FORESTS IN NORTH CAROLINA

BARTRAM TRAIL

NANTAHALA NATIONAL FOREST - NANTAHALA RANGER DISTRICT

SCALE: 1" = 60'

30'

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30' 60'

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BARTRAM TRAIL RELOCATION

TRAIL PLAN - 0+00 - 20+00

SCALE: 1" = 30'

15'

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15' 30'

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TRAIL PLAN - 20+00 - 45+50

SCALE: 1" = 30'

15'

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15' 30'

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BARTRAM TRAIL RELOCATION

SCALE: 1" = 100'

50'

0'

50' 100'

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TRAIL PLAN - 45+50 - 73+50

BARTRAM TRAIL RELOCATION

SCALE: 1" = 100'

50'

0'

50' 100'

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TRAIL PLAN - 73+50 - 108+50

BARTRAM TRAIL RELOCATION

TRAIL PLAN - 108+50 - 129+50

SCALE: 1" = 100'

50'

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50' 100'

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SCALE: 1" = 100'

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50' 100'

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TRAIL PLAN - 129+50 - 149+00

BARTRAM TRAIL RELOCATION

SCALE: 1" = 100'

50' 50' 100'

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TRAIL PLAN - 149+00 - 168+50

BARTRAM TRAIL RELOCATION

SCALE: 1" = 100'

50' 50' 100'

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TRAIL PLAN - 168+50 - 188+35 (TRAIL END)

Stump Position Side Slope Uphill Downhill

Stumps between the trailway and clearing limits.

Side slope less than or = to 10%

Side slope over 10%

Stump Height Requirements* (inches)

*All heights measured on uphill side of stumps.

Trim branches trunk rather than remove

CLEARING LIMITS

36-40"

Approx 4' Trailway

C

L

Cut

3.5' Clearing Limit

3.5' Clearing

Limit Downhill

Cut All Logs

Uphill Downhill

Cut

C

L

Cut

F

T ft ft

NOT TO SCALE

tree.

Uphill flush with

TYPICAL CROSS SECTION - TRAIL

C

L

E m b a n k m e n t

Backslope

Ground Line

C l e a r i n g

L i m i t

Trailbed

Trailway

7' Width

Ground Line

Catch

C l e a r i n g

L i m i t

7' Vertical Clearing

Limit

36-40" Tread

NOT TO SCALE

Catch Point

TRAIL SPECIFICATIONS:

Trail width = 36 inches to 40 inches wide

The clearing height = 8 feet

The clearing width = 7 feet.

Shoulder

Point

Fill Slope

Hinge Point

Native Material

Outslope without Ditch

Do not remove trees over

6" diameter if they are over 36" from the centerline (both sides).

Remove all trees 4" or less in diameter if they are within 36" of centerline

(both sides).

6"-8" 6"-8"

12"-16" 12"-18"

TRAIL CROSS SECTION AND

CLEARING LIMITS DETAILS

C

L

TYPICAL TRAIL CROSS SECTIONS

Amount of bench varies with the percent of sideslope.

Outslope trailbed 6-10%

Trailbed

3/4 Bench

Full Bench

Balanced

Section

0% to 10%

Sideslope

10% to 30%

Sideslope

30% to 50%

Sideslope

Above 50%

Sideslope

NOT TO SCALE

Fill slope

Fill slope

Slope rounding in commom material

Slope rounding in commom material

Slope rounding in commom material

C

L

GRADE DIP

C

L

PLAN VIEW

PROFILE

Vary centerline shift as necessary to daylight spillway.

Maintain outslope and trailbed width.

C

L

P re va ili n g G ra d e

72" Minimum36" minimum

14" Minimum

NOT TO SCALE

D o w n g r a d e

1' Min. - 3' Max.

Outlet Ditch

CROSS SECTION

BARTRAM TRAIL RELOCATION

GRADE DIP AND

TYPICAL TRAIL CROSS SECTIONS

TYPICAL OUTSLOPED CLIMBING TURN

Points of curve

T ra n s itio n s e c tio n m e te rs m in im u m

Turn

Section

PLAN VIEW

Maintain constant grade through turn.

U p g r a d e

U p g ra d e

In slo pe

O utslope %

Through cuts are permitted through climbing turns

SECTION A-A

Centerline of climbing turn will be FLAGGED or STAKED

ON THE GROUND.

Cut Slope

Fill Slope

A

A

In s lo p e to o u ts lo p e

C

L

NOT TO SCALE

TYPICAL SWITCHBACK - TYPE II

O u ts lo p e

-5

Barrier as Specified.

Ditch (where staked)

In slo pe 3 -5

SECTION A-A

PLAN VIEW

U p g r a d e p g r a d e

Drain Ditch

A

Through cuts are permitted on upper sides of switchbacks

E n d

S t a r t

6"

12"

Backslope, refer to trail excavation details.

R a d i u s v a r i e s

A p p r o a c h m x i m a d e

Trail Width

Fill Slope

Spill Point

I n s l o p t o t s l o p e

T r a n s i t i o n x i m

G a d e

Turn Section

2% maximum Grade

C u t

S l o p e

E x i s t i n u l d e b r r i e r

A

NOT TO SCALE

Log or Rock

Daylight individual site.

staked at each

Radius point is

Retaining wall pay item 935(01) if needed a k e d

OUTSLOPED CLIMBING TURN

AND SWITCHBACK - TYPE II

PLAN VIEW

PROFILE

P re v a il in g G ra d e

E d g e o f tr a il

Backslope

D o w n g ra d e

TYPICAL ROLLING DIP

Skew top and bottom of dip 8°

Drain-Line Outslope: 6%-10%.

If spill point of dip is not to daylight, construct lead-off ditch to daylight.

7" minimum

NOT TO SCALE

7" minimum

TYPICAL ROCK RETAINING WALL

SECTION A-A

Tread Tread

Dry Stack = tight joints 1" spacing max.

A

A w i d h i g h t

E m b i n

Existing Boulders on site

FRONT VIEW

Prepare footing in earth or solid rock. Inslope foundation 20% to 30%.

Wall width is 2/3 the wall height

Header rock

T r e a d

O u ts lo p e

NOT TO SCALE

Embed wall 12" -sides and bottom.

ROLLING DIP AND

ROCK RETAINING WALL DETAILS

NOT TO SCALE

TYPICAL TALUS AND RUBBLE ROCK SECTIONS

Original Slope Line

Cap Rocks if available

Trailbed

In slo pe 2

Geotextile

Minimum 12" cover of suitable excavation or borrow material.

Batter not steeper than

2:1.

Hand place and key in outer rocks.

ISOMETRIC VIEW

TYPICAL TRAIL

TYPICAL GRADE REVERSAL

(ROLLING CONTOUR)

(PREFERRED FOR DRAINAGE

NOT TO SCALE

GRADE REVERSAL DETAIL AND

TALUS AND RUBBLE ROCK SECTION