S-17-0017_Amend_3_Swan_Lake_Trail_14_MP0.73_&_0.96BoardwalkPLANS20170421signed.pdf

COLVILLE NATIONAL FOREST

REPUBLIC RANGER DISTRICT

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

SHEET 2

OF

VICINITY MAP

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

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LMR

PROJECT LOCATION:

Trail 14 MP 0.73 Site - 48°30'44.01"N, 118°50'35.21"W

Trail 14 MP 0.96 Site - 48°30'36.42"N, 118°50'25.72"W

Swan Lake Boat Launch - 48°30'40.36"N, 118°50'7.62"W

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TRAIL 14

MP0.73 SITE

TRAIL 14

MP0.96 SITE

TRAIL 14

SWAN LAKE

CAMPGROUND

SWAN LAKE

BOAT LAUNCH

N

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

SHEET 3

OF

ESTIMATE OF QUANTITIES AND GENERAL NOTES

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

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GENERAL NOTES:

1. ACCESS.

1.1. DAILY SITE ACCESS SHALL ONLY BE ON FOOT.

1.2. CONSTRUCTION MATERIALS, DISPOSAL MATERIALS, AND SUPPLIES MAY BE TRANSPORTED TO AND FROM SITES BY:

1.2.1. MECHANIZED TRAIL EQUIPMENT 48-INCHES WIDE OR LESS VIA SWAN LAKE TRAIL 14 AROUND THE NORTH END OF LAKE.

THIS ACCESS WOULD REQUIRE TEMPORARY IMPROVEMENTS TO THE 18-INCH TREAD WIDTH TRAIL.

1.2.2. MOTOR BOAT DURING THE LOON TIMING WINDOW OF AUGUST 1 TO SEPTEMBER 30.

2. THE IN-WATER WORK WINDOW IS FROM JULY 1 TO SEPTEMBER 30.

3. DESIGN LOADS:

3.1. 15 PSF DEAD LOAD

3.2. 90 PSF PEDESTRIAN LIVE LOAD

3.3. 65 PSF SNOW LOAD

4. HELICAL PILES SHALL MEET THE FOLLOWING REQUIREMENTS;

4.1. HELICAL PILES ARE TO BE 1 1/2 - INCH SQUARE SHAFT SS5 HELICAL PILES MANUFACTURED BY A.B. CHANCE COMPANY OR

APPROVED EQUAL CAPABLE OF SUPPORTING THE DESIGN LOADS ABOVE.

4.2. UPPERMOST HELIX SHALL BE BELOW FROST DEPTH OF 3FT

4.3. PILES ARE TO BE INSTALLED:

4.3.1. BY A CONTRACTOR CERTIFIED BY THE SUPPLIER

4.3.2. WITH PORTABLE ANCHOR INSTALLERS (NOT SKID STEER)

4.3.3. WITH A MINIMUM FACTOR OF SAFETY OF 2

5. HELICAL PILES LESS THAN OR EQUAL TO 7FT LONG ARE PAID FOR UNDER PAY ITEM 97001 BY EACH. IF THERE ARE PILE LOCATIONS

THAT REQUIRE LONGER PILES TO REACH DESIGN RESISTANCE THE ADDITIONAL LENGTH WILL BE PAID FOR UNDER OPTION PAY ITEM

97002 BY LINEAR FEET.

6. ONSITE MATERIALS:

6.1. ROCKY MATERIAL FOR ABUTMENT FOUNDATION INFILL AND TRAIL APPROACH BASE COURSE TO BE SCAVENGED ONSITE.

6.2. SURFACE COARSE TO BE FROM AREA BETWEEN MP0.73 AND MP0.96

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

SHEET 4

OF

MP 0.73 GEOTECHNICAL INVESTIGATION SUMMARY

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

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NOTES:

1. GEOTECHNICAL INVESTIGATION PERFORMED WITH WILLIAMSON DRIVE PROBE CONSTRUCTED OF 1/2" METAL PIPE AND 11 POUND

(2KG) DRIVE WEIGHT DROPPING 39 INCHES (1METER). THE WILLIAMSON BLOW COUNTS WERE CONVERTED TO STANDARD

PENETRATION TEST(SPT) BLOW COUNTS VIA REGRESSION EQUATION. THE MINIMUM CORRELATED BLOW COUNT VALUES WERE

ALSO PLOTTED ON DRIVE PROBE CHART AND PROFILE TO RELAY MINIMUM PROBABLE STRENGTH.

2. THE PROPOSED CROSSING PROFILE PERFORMED WITH INCLINOMETER, CLOTH TAPE AND LEVEL ROD.

3. FOR FULL INVESTIGATION INFORMATION REFER TO GEOTECHNICAL INVESTIGATION MEMO.

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P C

.6

P T

: 0

13.8

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A

A

APPROX WATER SURFACE AT GEO SURVEY

Station=0+16.20

APPROX ELEV OF GEO STAKE 0+13 = 3649.4

COLVILLE NATIONAL FOREST

REPUBLIC RANGER DISTRICT

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

SHEET 5

OF

TRAIL 14 MP 0.73 PROPOSED PLAN AND PROFILE

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

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N

Feet

1:180.01

30150

7.5

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APPROXIMATE

DEEPEST

CHANNEL

LOCATIONS

NOTES:

1. CONTOUR LINES ARE FROM FOREST SERVICE LIDAR AND ARE SHOWN FOR REFERENCE ONLY. CONTOURS DO NOT SHOW TERRAIN

BELOW WATER SURFACE AT TIME OF LIDAR FLIGHT. MINOR CONTOURS ARE 1/2 FOOT

2. FINAL BOARDWALK AND TRAIL APPROACH ALIGNMENT TO BE STAKED BY CONTRACTOR PRIOR TO CONSTRUCTION.

3. MP 0.73 BOARDWALK ELEVATIONS OF BOTTOM OF PILE CAP AND STRINGERS TO BE 1 FOOT ABOVE EXISTING GROUND LOCATION AT

GEO INVESTIGATION REFERENCE STAKE 0+13(SEE SHEET 4).

BEGINNING OF BOARDWALK BACKWALL

STATION=0+14.0

TOP OF DECK ELEVATION 23 INCHES ABOVE EXISTING

GROUND AT GEO STAKE 0+13; APPROX ELEV 3651.4

END OF BOARDWALK BACKWALL

STATION=0+76.5

TOP OF DECK ELEVATION 23 INCHES ABOVE

EXISTING GROUND AT GEO STAKE 0+13

DRAIN WATER AWAY FROM BOARDWALK AT 2% FOR

5 FEET TYP

MINIMUM CURVE RADIUS = 8

FT TYP

APPROX. EXISTING

TRAIL LOCATION

APPROX. PROPOSED TRAIL

LOCATION

EXISTING GROUND

PROPOSED CENTERLINE

BP: 0+00.00

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Mid: 0+10.08

M i d

E l e v a t i o n

E l e v a t i o n

Station

Profile View of Alignment - MP 0.96

3650.00

3660.00

3670.00

3650.00

3660.00

3670.00

0+00.00

0+00.00 0+04.14 0+16.01 0+76.80 0+87.72 0+95.59

1+00.00

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2% 0% -2% 1

1%

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E L E

COLVILLE NATIONAL FOREST

REPUBLIC RANGER DISTRICT

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

SHEET 6

OF

TRAIL 14 MP 0.96 PROPOSED PLAN AND PROFILE

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

HZG

LMR

N

Feet

1:180.01

30150

7.5

NOTES:

1. CONTOUR LINES ARE FROM FOREST SERVICE LIDAR AND ARE SHOWN FOR REFERENCE ONLY. CONTOURS DO NOT SHOW TERRAIN

BELOW WATER SURFACE AT TIME OF LIDAR FLIGHT. MINOR CONTOURS ARE 1/2 FOOT.

2. FINAL BOARDWALK AND TRAIL APPROACH ALIGNMENT TO BE STAKED BY CONTRACTOR PRIOR TO CONSTRUCTION. MP0.96

BOARDWALK TO BE REPLACED IN SAME LOCATION AS EXISTING STRUCTURE.

3. MP 0.96 BOARDWALK ELEVATION OF BOTTOM OF PILE CAP AND STRINGERS TO HAVE MINIMUM 0.5 FEET OF CLEARANCE TO GROUND.

BEGINNING OF BOARDWALK BACKWALL

STATION=0+16.0

TOP OF DECK ELEVATION TO BE DETERMINED BY GROUND CLEARANCE;

APPROX ELEV 3657.0

END OF BOARDWALK BACKWALL

STATION=0+78.5

TOP OF DECK ELEVATION TO BE DETERMINED BY MINIMUM

GROUND CLEARANCE; APPROX ELEV 3657.0

DRAIN WATER AWAY FROM BOARDWALK AT 2% FOR

5 FEET TYP

MINIMUM CURVE RADIUS = 3 FT PERMITTED AT THIS

LOCATION.

EXISTING GROUND

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

SHEET 7

OF

938 - BOARDWALK DETAILS 1 - PLAN AND PROFILE

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

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SHIFT CURB BOLT WHERE CURB SPLICE LOCATED AT PILE CAP TO AVOID PILE CAP TYP

9' 7' 5'

2'-6"

MIN DEPTH GREATER OF 1 FT OR TO MINERAL EARTH

FACE MOUNT JOIST HANGER

DECK BOARD GAP: MIN 1/4", MAX 3/8"

TIMBER SILL

STRINGERS

ROCK FOUNDATION AND WELL DRAINED BACKFILL

WITHIN 1FT OF STRUCTURE

CURB NAILER

STRINGER

5'3'

4"10'

12'

5'

RS 3X8 BLOCKING BETWEEN STRINGERS AT SILL TYP

DECK NAILERS

1'-6"

5'

NAILER BOLTS 3 PER NAILER TYP, MAX SPACING 4 FT

BLOCKING BETWEEN STRINGERS

GEOTEXTILE

APPROACH

CONSTRUCTION

A

BOARDWALK PROFILE

B

BOARDWALK PLAN

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

938 - BOARDWALK DETAILS 2 - SECTIONS

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

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TOP OF MINERAL EARTH

TOP OF ORGANIC SOIL

WATER SURFACE

ANCHOR BRACE HELICAL PILE WHEN REQUIRED BY

PILE CAP HEIGHT ABOVE STABLE MINERAL EARTH

(SPT BLOW COUNT 4)

7'

5'

4'-4"

8"

1'-1"

4'-9"

4'-2"

3'

4'-5"

9'

CURB RAIL

SCUPPER BLOCK

CURB RETAINER

DECKING

STRINGER

BLOCKING BETWEEN STRINGERS ON SILL

NAILER

DECK NAILER BOLT,

BOLT HEAD TO ON EXPOSED FACE,

NUTS ON INTERIOR FACE

BACKWALL

TIMBER SILL

FACE MOUNT HANGER

DECK NAILS TYP

SHEET 8

OF

C

TYPICAL ABUTMENT SECTION

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TYPICAL HELICAL PILE SECTION

(TYP)

1 1/4

(TYP)

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L

Ø11/16

(TYP)

NOTES:

1. ALL TIMBER MATERIAL SHALL BE ALASKA YELLOW CEDAR NO.1 OR BETTER.

2. ALL HARDWARE TO BE HOT-DIPPED GALVANIZED IN ACCORDANCE WITH AASHTO M232.

3. FASTENERS:

3.1. DECKING TO DECK NAILER: 60d 6 INCH RING SHANK NAILS OR DECK SCREWS 2 PER DECK STRINGER CONNECTION.

3.2. DECK NAILER TO STRINGER: 5/8 INCH CARRIAGE BOLT, NUT, WITH MALLEABLE TIMBER WASHERS

3.3. CURB RAILING TO CURB NAILER: 5/8 INCH CARRIAGE BOLT, NUT, WITH MALLEABLE TIMBER WASHERS

3.4. STRINGERS & BACKWALLS: 40d 5 INCH LONG RING SHANK NAILS.

5/8 INCH LAG BOLTS

3.5. STRINGER JOIST HANGERS: SIMPSON U410R FACE MOUNT JOIST HANGER FOR RS4X10 WITH SIMPSON STRONG DRIVE

SD10112 SCREWS (#10 X1 1/2") OR APPROVED EQUAL WITH ALLOWABLE LOAD OF 2015 LBS.

3.6. PILE CAP TO PILE: PER HELICAL PILE MANUFACTURER

3.7. HOLES FOR BOLTS SHALL BE DRILLED 1/16" OVERSIZE IN WOOD OR STEEL UNLESS NOTED OTHERWISE

COLVILLE NATIONAL FOREST

REPUBLIC RANGER DISTRICT

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

SHEET 9

OF

938 - BOARDWALK DETAILS 3 - DETAILS

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

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24" TYP

4" MIN TYP

CONTINUOUS CURB RAIL

SCUPPER BLOCK

5/8 INCH BOLT, NUT, AND MALLEABLE TIMBER

WASHER (2 PER SCUPPER BLOCK)

RS 4X4 CONTINUOUS CURB

RS 4X4X24 INCH

SCUPPER BLOCK

5/8 INCH BOLT, NUT, AND MALLEABLE TIMBER

WASHER

(2 PER SCUPPER BLOCK)

DECKING

RS 2X4 CURB RETAINER

RS 4X10 STRINGER

BLOCKING

RS 3X8 X 9' BACKWALL

(2 PER ABUTMENT)

SILL

CONTINUOUS CURB

SCUPPER BLOCK

CURB RETAINER

RS 6X6 X 7' SILL

DECKING

STRINGER

45°

1"

BACKWALL

RS3X8 BLOCKING BETWEEN STRINGERS

5/8 INCH X 3 INCH LAG

BOLT

5/8 INCH X 5 INCH LAG BOLT

DECK NAILER

5/8 INCH BOLT, NUT,

AND MALLEABLE

TIMBER WASHER

TRIM DECK NAILER AT PILE CAP AS

NEEDED TO ENSURE ANCHORAGE

FOR DECK NAIL WHILE AVOIDING

JOIST HANGER

CENTER DECK BOARD OVER PILE CAP TO

PREVENT WATER AND DEBRIS COLLECTION

SPIKE DECK BOARD OVER PILE

CAP TO NAILERS

E

CURB RETAINER AND DECK NAILER SECTION

ABUTMENT BRACKET DETAIL

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CURB SPLICING DETAIL

G

DECK OVER PILE CAP

CONNECTION DETAILF

END CURB AND BACKWALL DETAIL

ABOVE _ %

SIDESLOPE

8 INCHES

8 INCHES

SLOPE ROUNDING

IN COMMON MATERIAL

SLOPE ROUNDING

IN COMMON MATERIAL

TYPICAL TRAIL CROSS SECTIONS

TYPICAL

TREAD

WIDTH

SHOULDER

WIDTH

SHOULDER

WIDTH

_% TO %

SIDESLOPE

0 50

TREAD

WIDTH

SHOULDER

WIDTH

SHOULDER

WIDTH

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TSF-1

ID

TYPICAL

48 IN X

SCATTER CLEARING DEBRIS

WIDTH

TREAD

SHOULDER WIDTH

UPHILL DOWNHILL

6 IN

COMMENTS

TYPICAL TRAIL TREAD AND SHOULDER WIDTH

TYPE

SECTION

FINISH

TREAD

1X WITHIN 5 FEET OF BOARDWALK

COMMENTS

TREAD CROSS SLOPE

5 XN/A

OUTSLOPE INSLOPE

T

SECTION

CROWNED

TRAILBED AND SLOPE FINISH

SLOPE FINISH TRAILBED FINISH

FINISH

TREAD

2 IN 2 IN 3 IN

SLOPE AND TRAILBED FINISH

ROOTS

LOOSE

ROCK

EMBEDDED

ROCK

COMMENTS

X T1

T2

BACKFILL WITH

SUITABLE MATERIAL

REMOVE ROOTS THAT PROTRUDE FROM THE

BACKSLOPE WITH DIAMETERS GREATER THAN

SHOWN IN THE SLOPE AND TRAILBED FINISH

TABLE.

REMOVE LOOSE OR EMBEDDED ROCK ON THE

TRAILBED WITH A DIMENSION GREATER THAN

SHOWN IN THE SLOPE AND TRAILBED FINISH

TABLE.

TCS-1

ID

TYPICAL

SCATTER CLEARING DEBRIS

TSF-1 36 IN X 6 IN1X 5-15 FEET FROM BOARDWALK

T

TSF-1 18 IN X 6 IN1X BEYOND 15 FEET FROM BOARDWALK

T

1V

1H

CUT

TYP

1V

1H

TYP

FINISH

TREAD

10% 25%

TRAIL GRADE AND CURVE RADII

TARGET

MAX MIN

COMMENTS

MAX GRADE PERMITTED 15FT AWAY STRUCT.

GRADE

RADIUS

8 FT 3 FT MIN CURVE ONLY AT MP 0.96 SOUTH APPROACH

NOTES:

1. REMOVE AND DISPOSE OF DUFF AND TOP ORGANIC

LAYERS DOWN TO MINERAL SOIL. FOR TRAIL APPROACH

MAX EXCAVATION DEPTH IN FILL AREA IS 6 INCHES.

2. COMPACT BACKFILL IN 6 INCH LIFTS UNTIL NO VISUAL

DISPLACEMENT.

3. GEOTEXTILE TO BE SEPARATION TYPE NON-WOVEN.

4. OVERLAP GEOTEXTILE A MINIMUM OF 12 INCHES AT

CENTER AND AT ENDS.

5. A 4 INCH MINIMUM COVER IS REQUIRED OVER ALL

GEOTEXTILE AND GEOCELL FOUNDATIONS.

FOUNDATION WIDTH

GEOTEXTILE

1V

1.5H

FILL

TYP

5% SLOPE TO INSIDE OF

CURVE OR OUTSLOPE

APPLIES WHERE EXISTING GROUND IS BELOW TOP OF DECK

COLVILLE NATIONAL FOREST

REPUBLIC RANGER DISTRICT

DESIGNED BY:

CHECKED BY:

REVISIONS

REV. DATEDESCRIPTION

SHEET 10

OF

911 , 918 - TYPICAL TRAIL CROSS SECTIONS

SWAN LAKE TRAIL BOARDWALK REPLACEMENT

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TIMBER SILL

ROCKY WELL DRAINED BASE COURSE (1/2"-12")

BOTTOM OF BOARDWALK STRINGERS

SURFACE COURSE

ROCKY WELL DRAINED

BASE COURSE (1/2"-12")

FOR INFILL

FOUNDATION DEPTH AT MINERAL EARTH

(MIN 1FT BELOW SILL)

J

RAISED TRAIL SECTION

I

GEOSYNTHETIC FOUNDATION FOR BOARDWALK ABUTMENT

BALANCED SECTION

FULL BENCH SECTION