Plans_&_Drawings_Crabtree_Falls_Trail.pdf

SHEET INDEX

1 TITLE SHEET

2 PROJECT DESCRIPTION, VICINITY MAP &

SCHEDULE OF ITEMS

3 WORK ITEMS

4-15 TRAIL CONSTRUCTION & REHABILITATION

DETAILS

16 TRAIL BRIDGE PHOTOS & NOTES

17 TRAIL BRIDGE REHABILITATION DETAILS

DESIGNER: DATE:

FOREST ENGINEER: DATE:

ENGINEERING STAFF OFFICER: DATE:

DISTRICT RANGER: DATE:

NEPA DECISION DATE:

SHEET 1 OR 17

3/2/17

PG 2 of 17

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Project Description, Vicinity Map, and Schedule of Items

M. Alaniz 1-18-2017

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY: Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive Las Vegas, NV 89130

SHEET NO. G1

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

SCHEDULE OF ITEMS

PROJECT DESCRIPTION:

THIS PROJECT CONSISTS OF GENERAL MAINTENANCE OF WOOD AND METAL RAILING,

ROCKERY RETAINING WALL, AND TRAIL TREAD; CONSTRUCTION OF NEW WOOD AND METAL

RAILING, STAIRWAYS, TRAIL TREAD WITH AGGREGATE SURFACING, BENCHES, ROCKERY

RETAINING WALL, AGGREGATE SURFACING / CRIB FOUNDATIONS, AND OBLITERATION OF

USER CREATED TRAILS.

VICINITY MAP

PROJECT LOCATION

LEX

INGTO

N, V A

10 MILES

THE PROJECT IS LOCATED IN GLENWOOD AND PEDLAR RANGER DISTRICTS, OF THE GEORGE WASHINGTON- JEFFERSON NATIONAL FOREST, APPROXIMATELY 9 MILES SOUTHEAST OF STEELE'S TAVERN, VIRGINIA; LAT.

37°51'13.17" N, LON. 79°4'44.96"W

TRAIL REHABILITATION

CRABTREE FALLS

TRAILHEAD PARKING

GLULAM TRAIL BRIDGE

REHABILITATION

HWY 5

PG 3 of 17

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Work Items

M. Alaniz 1-18-2017

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY: Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive Las Vegas, NV 89130

SHEET NO. G2

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

WORK ITEMS

BASE CONTRACT WORK ITEMS OPTION CONTRACT WORK ITEMS

TRAIL BRIDGE REHABILITATION WORK ITEMS

(ADJACENT TO CRABTREE FALLS ENTRANCE)

THE CONTRACTOR SHALL PERFORM THE FOLLOWING WORK TASKS, IN ACCORDANCE TO

SHEETS 16 AND 17, AND THE SPECIFICATIONS:

- REPLACE GLULAM DIAPHRAGMS

- REPLACE RUNNING PLANK WOOD DECK

- REPLACE WOOD CROSS MEMBERS

- REMOVE EXISTING ANTI-GRAFFITI COATING OVER WOOD RAILS AND REPLACE WITH

NEW ANTI-GRAFFITI COATING (IN-KIND OR APPROVED EQUAL)

- PROVIDE ALL HARDWARE NECESSARY TO COMPLETE THIS WORK; UTILIZE EXISTING

HARDWARE AND CONNECTORS WHERE ALLOWED (REFER TO DRAWINGS).

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 1-18-2017

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY: Mario Alaniz - Enterprise Technical Services 4701 N. Torrey Pines Drive Las Vegas, NV 89130

SHEET NO. C1

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

ROCKERY RETAINING WALL

SLUMPING

PHOTO #3 - DETERIORATED TREAD AT CRIBBING (MP 0.25)

PHOTO #2 - RETAINING WALL AT MP 0.17 (BOTTOM VIEW)

PHOTO #1 - BROKEN RAIL AT MP 0.15

REMOVE AND DISPOSE OF

BROKEN WOOD RAIL AND INSTALL

NEW WOOD RAIL PANEL. REFER

TO SHEET 5 FOR DETAILS

TYPICAL TREAD STABILIZATION (CRIB FOUNDATION)

N.T.S.

EDGE OF TRAIL

EXISTING CRIBBING

EMBED 6-12" STONES

INTO THE TREAD; TOP 3

CRIBS AT THE BASE OF

STONE STIARCASE

EMBED 6-12" STONES INTO

TREAD OF THE TRAIL, WITH

MAX.1/2" PROTRUSION ABOVE

FINISHED SURFACE

BACKFILL AROUND THE STONES

WITH NATIVE SOIL

FINISHED

SLOPE 2-5%

NOTES:

1. CONTRACTOR SHALL UTILIZE EXISTING

TIMBERS FOR CRIB FOUNDATION.

2. CONTRACTOR SHALL EXCAVATE WITHIN THE

CRIBBING TO PLACE STONES.

3. CONTRACTOR SHALL UTILIZE FRESH NATIVE

MATERIAL TO BACKFILL AROUND THE STONES;

DISPOSE EXCAVATED MATERIAL ONSITE.

PG 4 of 17

TYPICAL WOOD BENCH DETAILS

N.T.S.

SIDE VIEW

N.T.S. FRONT VIEW

N.T.S.

TRAIL LANDING PLAN VIEW

N.T.S.

REBUILD WOOD BENCH (SEE

DETAILS BELOW)

REPAIR METAL RAIL

(SEE PHOTO)

EXISTING ROCKERY

WALL

RESET SLUMPING

WOOD STEPS (SEE

PHOT0)

EXISTING

WOOD STEPS

EXTEND METAL RAIL TO CLOSE

GAP AND PAINT NEW SEGMENT

OF RAIL "BLACK"

EXISTING

WOOD STEPS

REPLACE MISSING 2X4 WOOD

PLANK (HEADREST), INCIDENTAL

CONSTRUCTION TO BENCH

EXISTING ROCKERY

WALL

6X6 SUPPORT

POST (TYP.)

6X6 SUPPORT POST; SHOULDER

CUT TOP OF POST TO ACCEPT

2X2 RAILS (TYP.)

2X4 SUPPORT

BEAM (TYP.)

1/2" CARRIAGE BOLT

TO CONNECT 2X4

BEAMS TO 6X6 PAST

2X2 RAILS (TYP.)

1" SPACER (TYP.)

1/2" CARRIAGE BOLT TO

CONNECT 2X2 RAILS

AND 1" SPACER TO 6X6

POST

1/2" CARRIAGE BOLT TO

CONNECT 2X2 RAILS

AND 1" SPACER TO 6X6

POST

2X4 BEAM

(TYP.)

6" DIAM. X 12" DEEP

CONCRETE FOOTING

(TYP.)

EMBDDED STEEL

PLATE INTO FOOTING

DRILL INTO PLATE AND

BOLT TO 6X6 POST WITH

1/2" CARRIAGE BOLT

COUNTERSINK NUT

1/2" INTO POST (TYP.)

EXISTING METAL

RAIL

HEADREST

RESET SLUMPING STEPS

NOTES:

1. NEW WOOD RAILING SHALL BE SOUTHERN YELLOW PINE, GRADE NO. 2,

AND TREATED WITH PENTACHLOROPHENOL IN HEAVY OIL (GROUND

CONTACT - TYPE A SOLVENT). ALL FIELD CUTS SHALL BE TREATED WITH AN

SOLUTION APPROVED BY THE CONTRACTING OFFICER.

2. REMOVE AND DISPOSE WOOD BENCH TO A WASTE DISPOSAL LANDFILL.

PHOTO #4- LANDING STEP REPAIR @ MP 0.27 PHOTO #5 - METAL RAIL REPAIR @ MP 0.27

EXISTING HEADREST

COUNTERSINK NUT

1/2" INTO BEAM (TYP.)

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 1-18-2017

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY: Mario Alaniz - Enterprise Technical Services 4701 N. Torrey Pines Drive Las Vegas, NV 89130

SHEET NO. C2

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

PG 5 of 17

MP 0.548 RAILING INSTALLATION

TRAIL

INSTALL 70 LINEAR FEET

OF RAILING - REFER TO

DETAIL BELOW

TYPICAL WOOD RAIL DETAILS

N.T.S.

4X4 RAIL (TYP.)

4X6 POST (TYP.)

NUT AND BOLT

COUNTERSUNK

1-INCH INTO POSTS

DECOMPACT USER CREATED

TRAIL AND SCATTER ORGANIC

DEBRIS OVER TREAD

NOTES:

1 NEW WOOD RAILING SHALL MATCH THE LOOK AND APPEARANCE OF

WOOD RAILING ALREADY BUILT THROUGHOUT THE TRAIL.

2 NEW WOOD RAILING SHALL BE SOUTHERN YELLOW PINE GRADE NO. 2,

AND TREATED WITH PENTACHLOROPHENOL IN HEAVY OIL (GROUND

CONTACT - TYPE A SOLVENT). ALL FIELD CUTS SHALL BE TREATED WITH

COPPER-AZOLE OR APPROVED EQUAL.

3 FIX END POINTS OF THE RAILING TO END ALONG A STEEP PORTION OF THE

SIDE SLOPE AND ALONG THE EMBANKMENT WHERE THE TRAIL IS

CROWDED INTO THE HILLSIDE.

USER CREATED TRAIL RUNNING

PARALLEL TO MAIN TRAIL

PROTRUDING ROCKS ALONG THE

MAIN TRAIL

TRAIL

CONSTRUCT 50 LINEAR FEET OF ROCKERY

RETAINING WALL, 2 FEET HIGH, 2 FEET

WIDE AND 2 FEET EMBEDMENT.

NOTE 1

FINISHED TRAIL SURFACE,

2% OUTSLOPE

#26 AGGREGATE PLACED ON TOP 2 INCHES

OF TRAIL SURFACE

NOTES:

1. ALL ROCKS SHALL PROTRUDE NO MORE

THAN 1/2" ABOVE THE FINISHED GRADE

SURFACE.

2. OBTAIN NEEDED STONE FOR RETAINING

WALL FROM ALONG THE TRAIL; USE

6-18 INCH STONES AND USE

NON-SHRINK GROUT TO MORTAR THE

STONES TOGETHER.

MP 0.47 - AFTER TRAIL

RESTORATION

N.T.S.

MP 0.47 - BEFORE TRAIL

RESTORATION

N.T.S.

EXISTING GROUND

EXISTING GROUND

SEE RESTORATION DETAILS

ABOVE (ON THIS SHEET)

RETAINING WALL SLIDING

NATIVE SOIL

PHOTO #6 - TRAIL RESTORATION @ MP 0.47 PHOTO #7 - ROCKERY RETAINING WALL

REPAIR @ MP 0.499

POST-TO RAIL

CONNECTION

N.T.S.

ELEVATION VIEW

N.T.S.

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 1-18-2017

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C3

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive Las Vegas, NV 89130

PG 6 of 17

PHOTO #10 - DETERIORATED TREAD AT CRIBBING (MP 0.60)

PHOTO #9 - DETERIORATED TREAD AT CRIBBING (MP 0.59)

PHOTO #8 - REBUILD RETAINING WALL (MP 0.570)

PHOTO #11 - WELD END CAPS ON RAIL (MP 0.629) PHOTO #12 - UPRIGHT AND EMBED DISPLACED

WOOD RAILING (MP 0.646)

WELD END CAP ONTO END

OF METAL RAILS AND PAINT

END CAPS BLACK

EMBED POST AND RAIL

WHERE NEEDED

UPRIGHT WOOD RAILING

WHERE NEEDED

EMBED 6-12" STONES

INTO THE TREAD (3 CRIB

SECTIONS)

EMBED 6-12" STONES

INTO THE TREAD (2 CRIB

SECTIONS & AROUND

BASE OF THE STAIRS)

INSIDE EDGE OF

TRAIL

SEE NOTES BELOW

PHOTO #8 NOTES:

1. REMOVE AND DISPOSE WOOD ROUND

SUPPORTING LARGE ROCK ABOVE..

2. USE ROCK ABOVE WOOD ROUND FOR

FOUNDATION STONE. EMBED STONE

MIN. 18 INCHES INTO GROUND.

3. OBTAIN ALL ROCK NEEDED FOR THE

WALL ALONG THE TRAIL. ALL STONE

SHALL BE 6-18 INCH DIAMETER.

4. USE NON-SHRINK GROUT TO MORTAR

ROCK TOGETHER, TO FORM A

SINGULAR ROCK MASS

PHOTO #9 & 10 NOTES:

1. REFER TO SHEET 3 FOR DETAILS ON

EMBEDDED STONE AND FINISHED

SURFACE.

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 1-18-2017

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C4

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive

PG 7 of 17

CRIB LADDER END VIEW

#5 REBAR

TOP OF TIMBER &

TRAIL GRADE

TRAIL GRADE AT BOTTOM TIMBERS

SHALL BE 1 INCH ABOVE THE

BOTTOM OF THE TIMBER

BOTTOM OF TIMBER

CUTSLOPE

PRE-DRILL 5/8" HOLE THROUGH

ALL TIMBERS

SLOPE 2%

(TYP.)

SLOPE 2%

(TYP.)

TRAIL GRADE

SHEET NOTES:

1. ALL TIMBERS SHALL BE 7 INCH PERFECT PEELED, ROUND, SOUTHERN YELLOW PINE GRADE NO. 2, TREATED WITH PENTACHLOROPHENOL IN HEAVY OIL (GROUND CONTACT - TYPE A SOLVENT).

2. ALL REBAR SHALL BE NO. 5. ALL TIMBERS SHALL BE PRE-DRILLED WITH 5/8 INCH HOLE AND THE REBAR

DRIVEN THROUGH THE HOLE.

3. ALL FIELD CUTS SHALL BE TREATED WITH A SOLUTION APPROVED BY THE CONTRACTING OFFICER.

4. MATERIAL NEEDED FOR BACKFILLING TIMBERS MAY BE OBTAINED BY LAYING BACK EXISTING

BACKSLOPES AT 1:1 OR FLATTER. ALL COST TO PERFORM THIS WORK IS INCIDENTAL TO THE

CONSTRUCTION OF THE WOOD CRIB LADDER STAIRWAY.

CRIB LADDER SIDE VIEW

N.T.S.

CRIB LADDER PLAN VIEW

N.T.S.

#5 REBAR

(TYP.)

EDGE OF TRAIL

(ALONG CUTSLOPE)

S

LO

PE 2

(TYP.)

7" DIAM. ROUND

TREATED TIMBER

(PERFECT PEELED)

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 4-3-2016

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C5

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive Las Vegas, NV 89130

BACKFILL BETWEEN TIMBERS WITH DRY

NATIVE MATERIAL FREE OF ORGANICS,

AND CAP WITH 4 INCHES THICK LAYER

OF AGGREGATE, #26 GRADATION

PG 8 of 17

CRIB STAIRWAY LADDER DETAILS

REPLACE WOOD RAILING

ALONG STEPS

OPTION: REPLACE ALL

VANDALIZED RAILING ALONG

OBSERVATION PLATFORM

2x6 WOOD

RAIL

2x4 WOOD

RAIL

EXISTING BRACKET

EMBEDDED INTO

GROUND 4x4 WOOD

POST

LANDING AT MP 0.727

N.T.S.

PLAN VIEW

N.T.S. LANDING RAILING - ELEVATION VIEW

N.T.S.

TOP OF POST

N.T.S.

1/2" CARRIAGE

BOLT

BEVEL TOP OF

POST (2 INCHES) ROUND RAIL

EDGES (TYP.)

1" RADIUS

4X4 WOOD

POST

PHOTO #13 - RAILING TO LANDING (MP 0.727)

REPLACE LOOSE RAIL

ALONG STEPS

OPTION ITEM: REPLACE ALL

RAILING ALONG LANDING

UTILIZE EXISTING BRACKET

(POST-TO-GROUND)

CONNECTION (TYP.)

NOTES:

1. NEW WOOD RAILING SHALL MATCH THE LOOK AND APPEARANCE OF

WOOD RAILING ALREADY BUILT ALONG THIS LANDING.

2. NEW WOOD RAILING SHALL BE SOUTHERN YELLOW PINE, GRADE NO. 2,

AND TREATED WITH PENTACHLOROPHENOL IN HEAVY OIL (GROUND

CONTACT - TYPE A SOLVENT).

3. ALL FIELD CUTS SHALL BE TREATED WITH A SOLUTION APPROVED BY THE

CONTRACTING OFFICER.

TRAIL TREAD AT MP 0.843

N.T.S.

REMOVE LOOSE ROCK AND DISLODGE\PULVERIZE

LARGER BOULDERS TO PRODUCE GENERALLY

LEVEL TRAIL TREAD (4 FT WIDE). PLACE 4" OF #26

AGGREGATE OVER "FLATTENED" SURFACE, OVER

THE ENTIRE LENGTH OF THIS REHABBED TRAIL

SECTION

AFTER TRAIL RESTORATION

N.T.S.

BEFORE TRAIL RESTORATION

N.T.S.

UNEVEN, ROCKY TRAIL

TREAD

EXISTING GROUND

2% SLOPE

PHOTO #14 - TRAIL TREAD (MP 0.843)

NOTE: PRIOR TO THIS ROCK FORMATION, INSTALL

CRIB LADDER STAIRWAY, 40 FEET LONG AND

ENDING AT THE BASE OF THIS FORMATION.

SLOPE OF TRAIL APPROXIMATELY 10%

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 4-3-2016

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C6

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive

PG 9 of 17

PHOTO #15 - TRAIL TREAD (MP 0.988) PHOTO #16 - TRAIL TREAD (MP 0.988)

PHOTO #17 - TRAIL TREAD (MP 1.084) PHOTO #18 - TRAIL TREAD (MP 1.084)

CONSTRUCT

ROCKERY WALL

INSTALL 12X12 WOOD

PLANKS & EMBED INTO

EMBANKMENT (EST. 6

TOTAL)

CONSTRUCT TRAIL TREAD MIN. 4

FT WIDE AND CONNECT TO

EXISTING ALIGNMENT (UTILIZE

USER-CREATED ROUTE)

CONSTRUCT

ROCKERY WALL

INSTALL 12X12 WOOD

PLANKS & EMBED INTO

EMBANKMENT (EST. 4

TOTAL)

CONSTRUCT TRAIL TREAD MIN. 4

FT WIDE AND CONNECT TO

EXISTING ALIGNMENT (UTILIZE

USER-CREATED ROUTE)

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 4-3-2016

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C7

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive Las Vegas, NV 89130

PG 10 of 17

TYPICAL STEP LADDER DETAIL

N.T.S.

INSTALL 12X12 WOOD

PLANKS & EMBED INTO

EMBANKMENT (TYP.)

EXISTING

GROUND

BACKFILL BEHIND THE

WOOD WITH NATIVE

BACKFILL

ANCHOR WOOD PLANK

WITH #4 X 36" REBAR;

SET REBAR 1/4" BELOW

TOP OF WOOD PLANK

ROCKERY RETAINING WALL AT

0.988 DETAIL

N.T.S.

FINISHED TRAIL SURFACE,

2% OUTSLOPE #26 AGGREGATE PLACED ON

TOP 2 INCHES OF TRAIL

SURFACE

NATIVE SOIL

CONSTRUCT ROCKERY RETAINING WALL

(30 LINEAR FEET). EMBED 2 FEET INTO

GROUND AND TAPER THE WALL TO BLEND

INTO HILLSIDE (MAX. 4 FEET ABOVE GRADE)

EXISTING GROUND

PHOTO #19 - REHAB ROCKERY RETAINING WALL (MP 1.135)

"CHRISTMAS" BENCH AT MP 1.05

N.T.S.

PLAN VIEW

N.T.S.

FRONT VIEW

N.T.S.

EXISTING TRAIL BENCH

("CHRISTMAS" BENCH)

EXISTING GROUND

REHAB SLUMPING ROCK

WALL & PLACE NEW ROCK

FOR THE TOP COURSE

OF ROCK

DOWEL WOOD PLANKS

TOGETHER AT THE

ENDS (TYP.)

1/2" CARRIAGE BOLT,

COUNTERSUNK INTO

WOOD PLANK (TYP.)

GLUE WOOD PLUG INTO EACH

BOLT HOLES, CUT PLUG FLUSH

WITH FINISHED SURFACE (TYP.)

NOTES:

1. NEW WOOD RAILING SHALL BE SOUTHERN YELLOW PINE, GRADE NO. 2,

AND TREATED WITH PENTACHLORPENOL IN HEAVY OIL (GROUND CONTACT

- TYPE A SOLVENT).

TWO - 12X12

WOOD BEAMS

BACKFILL BETWEEN

WOOD AND BENCH

WITH NATIVE SOIL

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 4-3-2016

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C8

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive

PG 11 of 17

ROOT WADS ALONG CUT SLOPE

OF TRAIL (EXISTING CONDITION)FALL AND DISPOSE TREEEDGE OF EXISTING

TRAIL TREAD (TYP.)

TRAIL RESTORATION AT MP 1.195

N.T.S.

PLAN VIEW

N.T.S.

PHOTO #20 - TRAIL RESTORATION (MP 1.195)

PROFILE VIEW

N.T.S.

FINISHED TRAIL SURFACE

USE NATIVE SOIL TO FILL AROUND

ROOT WADS & BRING TRAIL SURFACE

HIGHER

EXISTING TRAIL SURFACE

(10% TYP.)

INSTALL ROCKERY RETAINING WALL

NOTES:

1. NUMBER OF CRIB STEPS SHOWN ON THE PROFILE VIEW IS

APPROXIMATE. IT IS THE RESPONSIBILITY OF THE

CONTRACTOR TO FIELD VERIFY GRADES AND DIMENSIONS

AND CONSTRUCT THE CRIB LADDER IN ACCORDANCE TO

THE DETAILS SHOWN ON SHEET 7.

2. OBTAIN NEEDED STONE FOR RETAINING WALL FROM ALONG

THE TRAIL; USE 6-18 INCH STONES AND USE NON-SHRINK

GROUT TO MORTAR THE STONES TOGETHER.

3. EMBED NEW ROCKERY WALL 2 FEET INTO THE GROUND,

WITH EXPOSED WALL FACE BEING 2 FEET (MAX.) ABOVE

GROUND AT THE START (WHERE CRIBBING ENDS)

TRANSITIONING TO FLUSH WITH GROUND AT THE END OF

THE WALL.

ROCKERY WALL SECTION VIEW

N.T.S.

EXISTING ROOT WAD

CONSTRUCT 50 LINEAR FEET

OF ROCKERY RETAINING WALL

(SEE NOTE 3 FOR DETAILS)

FINISHED TRAIL SURFACE

#26 AGGREGATE PLACED ON TOP

2 INCHES OF TRAIL SURFACE

EXISTING

GROUND

NATIVE SOIL

EDGE OF FINISHED

TRAIL TREAD (TYP.)

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 4-3-2016

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C9

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive

PG 12 of 17

PROFILE VIEW

EXISTING TRAIL SURFACE

PHOTO #21 - TRAIL RESTORATION (MP 1.270)

GRIND DOWN STUMP

FLUSH WITH EXISTING

TRAIL SURFACE

DEAD TREE

LEANING TREE

RE-ROUTE TRAIL SLIGHTLY

TO AVOID CONCENTRATION

OF ROOT WADS

PLAN VIEW

N.T.S.

NEW ROCKERY RETAINING

WALL (APPROX. 60 LF)

ROCKERY WALL SECTION VIEW

N.T.S.

CONSTRUCT 60 LINEAR FEET

OF ROCKERY RETAINING WALL

(SEE NOTE 3 FOR DETAILS)

#26 AGGREGATE PLACED ON TOP

2 INCHES OF TRAIL SURFACE

NATIVE SOIL

EXISTING ROOT WAD

EXISTING GROUND

FINISHED TRAIL SURFACE

NOTES:

1. NUMBER OF CRIB STEPS SHOWN ON THE PROFILE VIEW IS

APPROXIMATE. IT IS THE RESPONSIBILITY OF THE

CONTRACTOR TO FIELD VERIFY GRADES AND DIMENSIONS

AND CONSTRUCT THE CRIB LADDER IN ACCORDANCE TO

THE DETAILS SHOWN ON SHEET 7.

2. OBTAIN NEEDED STONE FOR RETAINING WALL FROM ALONG

THE TRAIL; USE 6-18 INCH STONES AND USE NON-SHRINK

GROUT TO MORTAR THE STONES TOGETHER.

3. EMBED NEW ROCKERY WALL 2 FEET INTO THE GROUND,

WITH EXPOSED WALL FACE BEING 2-3 FEET ABOVE

GROUND.

TRAIL RESTORATION AT MP 1.270

N.T.S.

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 4-3-2016

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C10

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive

PG 13 of 17

EXISTING METAL PIPE

RAILING (END)

LANDING AT MP 1.381

N.T.S.

PLAN VIEW

N.T.S.

LANDING RAILING - ELEVATION VIEW

N.T.S.

PHOTO #23 - DAMAGE ROCKERY WALL (MP 1.381)

DAMAGE ALONG

BASE OF WALL

PHOTO #24 - DAMAGE ROCKERY WALL (MP 1.381)

REPLACE MISSING

STONES ALONG THE

TOP OF THE WALL

PHOTO #22- EXTEND METAL RAIL (MP 1.381)

EXISTING METAL PIPE

RAILING (END)

USER CREATED TRAIL

EXTEND METAL RAILING

18' AND EMBED INTO

BEDROCK

OPTION ITEM: EXTEND RAILING AN

ADDITIONAL 12 FEET AND TERMINATE

AT ROCK/BOULDER ALONG INSIDE

EDGE OF TRAIL

SHEET NOTES:

1. DISTANCE BETWEEN THE POST SHALL BE SET TO MATCH THE RADIUS OF

CURVATURE ALONG THE INSIDE EDGE OF THE TRAIL. MAXIMUM DISTANCE

BETWEEN POST SHALL NOT EXCEED 6 FEET (ON-CENTER).

2. PAINT ALL NEW METAL RAIL BLACK, AND ALSO RE-PAINT EXISTING RAILING

BLACK TO MATCH APPEARANCE.

3. FIELD MEASURE TO VERIFY DIMENSIONS AND ASSEMBLE NEW RAILING TO

MATCH EXISTING RAILING.

INSTALL NEW METAL PIPE

RAILING (2" DIAM. PIPE)

INSTALL 18 FEET OF METAL

RAILING WITH OPTION TO

INSTALL ADDITIONAL 12

FEET

DAMAGED ROCKERY

WALL

OPTION: TERMINATE RAILING

AT BOULDERS/ROCKS ALONG

TRAIL

START NEW RAILING APPROX. 6

INCHES FROM END OF EXISTING

RAILING

CORE DRILL INTO BEDROCK TO EMBED

ALL POSTS 18 INCHES INTO GROUND

AND GROUT/CEMENT POSTS INTO

GROUND (TYP.)

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 4-3-2016

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C11

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive

PG 14 of 17

PHOTO #27 - OBSERVATION POINT AT TOP OF

THE FALLS (MP 1.7)

AT BASE OF ROCK WALL,

DRILL AND INSTALL WEEP

HOLES (SEE NOTES BELOW)

PHOTO XX NOTES:

1 NEW WEEP HOLES ALONG BASE OF THE WALL SHALL BE 1" DIAMETER AND

SPACED AT 10 FEET CENTERS.

2 INSTALL PVC PIPE INTO DRILLED HOLE AND MORTAR INTO PLACE. USE

COLOR THAT WILL BLEND INTO THE ROCKS.

UPRIGHT WOOD RAILING

WHERE NEEDED

PHOTO #26 - UPRIGHT WOOD RAILING (MP 1.538)

WEEP HOLES AT BASE OF WALL

N.T.S.

TRAIL SURFACE

EXISTING ROCKERY WALL

DRILL INTO WALL AND INSTALL 1"

DIAM. PVC PIPE; GROUTED IN PLACE

DRAWN BY: DATE:

PROJECT DESCRIPTION:

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Construction & Rehabilitation Details

M. Alaniz 4-3-2016

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY:

SHEET NO. C12

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

Mario Alaniz - Enterprise Technical Servces 4701 N. Torrey Pines Drive Las Vegas, NV 89130

PHOTO #25 - UPRIGHT WOOD RAILING (MP 1.399)

UPRIGHT WOOD RAILING

WHERE NEEDED

PG 15 of 17

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Bridge Photos & Notes

M. Alaniz 1-18-2017

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY: Mario Alaniz - Enterprise Technical Services 4701 N. Torrey Pines Drive Las Vegas, NV 89130

SHEET NO. C13

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

PHOT0 #31 - DIAPHRAGM AND CROSS

MEMBERS UNDER DECKING

N.T.S.

EXISTING GLULAM DIAPHRAGM

(TYP); REPLACE ALL MEMBERS

EXISTING 2X8 CROSS

MEMBER (TYP); REPLACE

ALL MEMBERS

EXISTING GLULAM STRINGER

(TYP)

STEEL CROSS SUPPORT

(TYP)

PHOT0 #32 - DIAPHRAGM

ATTACHMENT TO STRINGER

N.T.S.

BOLT ATTACHMENT

PHOT0 #33 - CROSS MEMBER

ATTACHMENT TO STRINGER

N.T.S.

CROSS MEMBER

ATTACHMENT

EXISTING 2X8 CROSS

MEMBER (TYP); REPLACE

ALL MEMBERS

PHOT0 #30 - ANTI-GRAFFITTI

COATING OVER TOP OF RAILING

N.T.S.

PHOT0 #29 - CROSS MEMBER

ATTACHMENT TO STRINGER

N.T.S.

PHOT0 #28 - BRIDGE DECKING

N.T.S.

EXISTING BRIDGE

DECKING (TYP);

REPLACE ALLPLANKS

ANTI-GRAFITTI COATING

(FAILING); REPLACE ALL

COATING

FAILING ANTI-GRAFITTI

RAIL COATING

GLULAM STRINGER

PG 16 of 17

CHECKED BY: DATE:

PROJECT NO.:

DRAWING NAME: Graphic Scale: N.T.S.LOCATION:

Crabtree Falls Trail Improvements Crabtree Falls Trail Trail Bridge Rehabilitation Details

M. Alaniz 1-18-2017

U41320 Construct or Rehabilitate Existing Trail tread, crib ladders, wood & metal railing, rockery retaining wall, and obliterate user-create trails

CRABTREE.dwg

USDA FOREST SERVICE - R8

GW-JEFFERSON NAT'L FORESTS

5162 VALLEYPOINTE PKWY

ROANOKE, VA 24019

PREPARED BY: Mario Alaniz - Enterprise Technical Services 4701 N. Torrey Pines Drive Las Vegas, NV 89130

SHEET NO. C14

George Washington-Jefferson N.F.

lat. 37°51'13.17" N lon. 79°4'44.96"W

GLULAM BRIDGE PLAN VIEW

N.T.S.

REPLACE ALL GLULAM

DIAPHRAGMS

REPLACE ALL 2" X 8" WOOD

CROSS MEMBERS (OR NAILER);

SET @ 24" CENTERS (APPROX.)

REPLACE ALL 2" X 6" RUNNING

PLANKS WITH NEW 2" X 6"

RUNNING PLANKS

STEEL CROSS BRACE

(LEAVE IN PLACE)

GLULAM BRIDGE ELEVATION VIEW

N.T.S.

NEW RUNNING PLANKS

SHALL BE SET TO MATCH

ARCH OF BRIDGE REMOVE EXISTING ANTI-GRAFFITI

COATING AND REPLACE IN KIND

OR APPROVED EQUAL

REPLACE ALL 2"X8"

CROSS MEMBERS

(36 TOTAL)

REPLACE ALL GLULAM

DIAPHRAGMS (17 TOTAL)

GLULAM BRIDGE SECTION VIEW

N.T.S.

UTILIZE EXISTING BOLTS AND

CONNECTORS TO RE-ATTACH

NEW DIAPHRAGM TO

STRINGER (TYP.)

EXISTING GLULAM

STRINGER (TYP.)

FASTEN RUNNING PLANKS

TO CROSS MEMBERS AND

DIAPHRAGMS WITH 6"

RINGSHANK NAILS (TYP.)

REMOVE EXISTING ANTI-GRAFFITI

COATING OVER BOTH RAILS AND

REPLACE IN KIND OR APPROVED

EQUAL

REPLACE ALL 2" X 6" RUNNING

PLANKS WITH NAIL NEW 2" X

6" RUNNING PLANKS

LEAVE 3/8" GAP BETWEEN

ENDS OF RUNNING

PLANKS (TYP.)

PG 17 of 17