TitanTrailBridge_drawings.pdf

PROJECT LOCATION

132°136°138° 134°

JUNEAU

Craig

132°

Sitka

136° 134°

56° Ketchikan

Wrangell

Petersburg

58°

130°

INDEX TO SHEETS

NO. DESCRIPTION

1 TITLE SHEET

TITAN TRAIL BRIDGE CONSTRUCTION

POW

SITE PLAN2

4 BOARDWALK DETAILS

TRAIL DETAILS

Parking /

Trailhead

Hydaburg Highway

USDA FOREST SERVICE - TONGASS NATIONAL FOREST SH. ofR-10 -

DESIGNED: DATE:

DATE:DRAWN:

REVIEWED: DATE:

DATE: REVISION: BY:

PLOT ON 11"X17" PAPER

TONGASS

ENGINEERING & RECREATION TNFTYP:09/04

TITAN TRAIL BRIDGE CONSTRUCTION TITLE SHEET

KETCHIKAN MISTY DISTRICT

e.oman 2/2010 e.oman 2/2010 mam, dm, ajm 2/2010 TitanTrail_title 1 8

PROJECT AREA

SALMON RIVER

TO KETCHIKAN

(VIA PORTLAND CANAL)

PREFAB STEEL TRUSS DETAILS

Hyder

TO

C

AS

SI

AR

H

IG

HW

AY

Stewart, B.C.

Hyder, AK

PROFILE

6-8

FISH CREEK WILDLIFE

OBSERVATION SITE

2/22/2010 3:12:08 PM

USDA FOREST SERVICE - TONGASS NATIONAL FOREST SH. ofR-10 -

DESIGNED: DATE:

DATE:DRAWN:

REVIEWED: DATE:

DATE: REVISION: BY:

PLOT ON 11"X17" PAPER

TONGASS

ENGINEERING & RECREATION TNFTYP:09/04

TITAN TRAIL BRIDGE CONSTRUCTION SITE PLAN

KETCHIKAN - MISTY DISTRICT

e.oman 2/2010 e.oman 2/2010 mam, dm, ajm 2/2010 TitanTrailBridge_siteplan 2 8

TO PARKING AREA

TITAN TRAIL

BRIDGE DESIGN CRITERIA

1. SPAN LENGTH = 90 ft

2. SPAN WIDTH = 5 ft

3. DEAD LOAD = SIZE AND PROPORTION COMPONENTS TO

ACCOMMODATE THE SELF WEIGHT OF THE STRUCTURE

4. LIVE LOAD = 85 psf (AASHTO PEDESTRIAN LOAD)

5. LIVE LOAD = 250 psf (GROUND SNOW LOAD)

6. SEISMIC:

SPECTRAL RESPONSE ACCELERATION PARAMETER AT SHORT

PERIODS (Ss) = 0.15

SPECTRAL RESPONSE ACCELERATION PARAMETER AT A PERIOD OF

ONE SECOND (S1) = 0.10

7. WIND SPEED 100 mph, EXPOSURE CATEGORY B

8. BOTTOM OF BRIDGE SUPERSTRUCTURE TO BE AT THE ELEVATION

SHOWN IN THE DRAWINGS.

9. BRIDGE SUPERSTRUCTURE COMPONENTS TO BE MOSTLY ABOVE

THE DECK. FOR EXAMPLE STEEL PONY TRUSS OR TIMBER TIED

ARCH.

BRIDGE ABUTMENT LOCATIONS WILL BE STAKED IN THE FIELD BY THE CO.

BEAVER DAM

EXISTING TITAN TRAIL

RECONSTRUCT 700 feet OF

TRAIL FROM PARKING AREA

TO NEW BRIDGE. 36" WIDE.

ALL GRAVEL TRAIL EXCEPT 30

FT OF ELEVATED BOARDWALK.

FLO

W

90 ft NEW BRIDGE

97 ft NEW ELEVATED BOARDWALK TRAIL 42" wide

72 ft NEW GRAVEL TRAIL

CONSTRUCT 30 ft of

36" WIDE ELEVATED

BOARDWALK OVER

CHANNEL

SCALE IN FEET

5025025

EDGE OF WATER ON OCT. 23, 2009

DESIGN AND INSTALL BANK PROTECTION, SUCH AS GABIONS,

TO PROTECT ABUTMENT FROM SCOUR. BANK PROTECTION TO

BE DESIGNED BY THE CONTRACTOR TO COMPLEMENT

SUBSTRUCTURE DESIGN. PROVIDE TIMBER FASCIA OR RIPRAP

IN FRONT OF GABIONS TO PROTECT FROM FLOATING DEBRIS.

MAGNETIC

FISH CREEK

POINT 1

HAZARD TREE TO

BE REMOVED

APPROX. LOCATION

EXISTING TRAIL

TO BE ABANDONED

O V

ERFLO

W C

H

AN

N

EL

36" WIDE

5 ft WIDE STAIRS

2/22/2010 3:12:19 PM

DATE:DRAWN:

REVIEWED: DATE:

DATE: REVISION: BY:

PLOT ON 11"X17" PAPER

TONGASS

ENGINEERING & RECREATION TNFTYP:09/04

TITAN TRAIL BRIDGE CONSTRUCTION PROFILE

KETCHIKAN - MISTY DISTRICT

e.oman 2/2010 e.oman 2/2010 mam, dm, ajm 2/2010 TitanTrailBridge_siteplan 3 8

PROFILE

EXISTING GROUND

FINISH GRADE

NEW GRAVEL TRAIL

PLANK STEPS TO BRIDGE

NEW TRAIL BRIDGE

90 ft LONG x 5 ft WIDE w/ MOST SUPERSTRUCTURE

COMPONENTS ABOVE THE DECK

WATER LEVEL ON

OCT. 23, 2009

ELEV. 101 ft

ELEVATED BOARDWALK FROM BRIDGE TO EXISTING TITAN TRAIL

DECK ELEV. 108 ft

FOR SILL OR GRADE BEAM SUBSTRUCTURE :

EXCAVATE TO MINERAL SOIL, 2 ft DEPTH, MINIMUM. FILL WITH CRUSHED AGGREGATE, COMPACT IN 1 ft LAYERS.

(TYP. BOTH SIDES)

MAINTAIN EXISTING 2H:1V SLOPE

PLACE RIPRAP AS SHOWN ON SHEET 8

B

EG

IN

B

R

ID

G E

EN

D

B R

ID

G E

BRIDGE DECK ELEV. = 108 ft

INSTALL GABIONS OR OTHER BANK

PROTECTION PER CONTRACTOR DESIGN

END PROJECT

INTERSECTION WITH

EXISTING TITAN TRAIL

MAINTAIN 3 ft (min) BETWEEN FRONT OF SILL AND TOP OF BANK

TO BEGINNING OF PROJECT

AT TRAILHEAD PARKING AREA

2/22/2010 3:12:22 PM

DATE:DRAWN:

REVIEWED: DATE:

DATE: REVISION: BY:

PLOT ON 11"X17" PAPER

TONGASS

ENGINEERING & RECREATION TNFTYP:09/04

TITAN TRAIL BRIDGE CONSTRUCTION BOARDWALK DETAILS

KETCHIKAN MISTY DISTRICT

USFS

USFS

mam, dm, ajm 2/2010 TitanTrail_traildetails 4 8

ELEVATION

NOTE

THIS SHEET DEPICTS THE BOARDWALK FROM THE

LEFT (EAST) BRIDGE ABUTMENT TO THE TITAN TRAIL.

POSTS FOR BOARDWALK ACROSS THE OVERFLOW

CHANNEL ON RIGHT (WEST) APPROACH TRAIL MAY

BURIED 24" IF SOIL CONDITIONS ARE APPROVED

BY THE CO. NO RAILING IS REQUIRED ON THE

OVERFLOW CHANNEL BOARDWALK IF THE DECK

ELEVATION IS LESS THAN 30" ABOVE EXISTING

GROUND.

INSTALL RAILING WHERE TOP OF

BOARDWALK DECKING IS GREATER

THAN 30" ABOVE GROUND SURFACE

BLEND BOARDWALK TO NATURAL

GROUND AT EXISTING TRAIL

(max) SPAN 5.0'

3x8 TOP RAIL. ATTACH w/ #10

DECK SCREWS, 2 PER RAIL POST,

AND 18" c/c ALONG SIDE RAIL

2x4 SIDE RAILS. BOLT TO RAIL POST w/ 38" CARRIAGE BOLTS, 1 PER POST

6x6 RAIL POST

3x12 DECKING (ROUGH CUT). ATTACH TO LEDGER w/ 20d NAILS, 2 PER PLANK & #10

DECK SCREW, 1 AT PLANK CENTER.

2x6 CROSS BRACING. INSTALL WHERE DECK

HEIGHT ABOVE EXISTING GROUND IS

GREATER THAN 42" OR WHERE POSTS

CANNOT BE SET ON STABLE BEARING

MATERIAL

BOLT CROSS BRACE TO POST W/ 3

8" BOLTS,

2 PER END

EXISTING GROUND

6x6 RAIL POST

BURY POSTS 36" (min) IN SOIL

OR LOOSE ROCK. POST SHALL

REST ON 6" OF UNDISTURBED

MINERAL SOIL OR COMPACTED

CRUSHED AGGREGATE.

BACKFILL w/ CRUSHED

AGGREGATE, COMPACTED

IN 12" LAYERS

DUCKBILL EARTH ANCHOR MODEL 88

w/ 14" CABLE. BURY 4 ft.

SECURE CABLE TO SPACER BLOCK AND

BETWEEN CROSS BRACING w/ CABLE.

3x8 LEDGER. BOLT TO RAIL POST w/ 3 8"

THROUGH BOLTS, 2 PER END

6x6

SPACER

BLOCK

BLEND 42"

BOARDWALK WIDTH

TO 60" BRIDGE

WIDTH AT BRIDGE

ENDS. SUPPORT

BOARDWALK

INDEPENDENT OF

BRIDGE STRUCTURE.

ELEVATION CROSS SECTION

3x8 LEDGER

2x6 CROSS BRACING

3x12 DECKING

TRANSITION TOP RAIL AND 2

SIDE RAILS AS SHOWN

3x8 TOP RAIL

2x4 SIDE RAIL

6x6 RAIL POST

6x6

SPACER

BLOCK

EQUAL

EQUAL

EQUAL

2" SPACING

BETW PLANKS

42"

PROVIDE 42" CLEAR SPACE

BETW INSIDE FACE OF RAILING

PROVIDE 36" CLEAR SPACE

BETW POSTS FOR BOARDWALK

ACROSS OVERFLOW CHANNEL

.5

' WHERE

RAILING IS

NOT

REQUIRED

2/22/2010 3:12:27 PM

DATE:DRAWN:

REVIEWED: DATE:

DATE: REVISION: BY:

PLOT ON 11"X17" PAPER

TONGASS

ENGINEERING & RECREATION TNFTYP:09/04

TITAN TRAIL BRIDGE CONSTRUCTION TRAIL DETAILS

KETCHIKAN MISTY DISTRICT

USFS

USFS

mam, dm, ajm 2/2010 TitanTrail_traildetails 5 8

NOT TO SCALE

GRAVEL TRAIL CROSS SECTION

TRAILBED PREPARATION

1. FOLLOW EXISTING TRAIL ALIGNMENT FROM THE PARKING

AREA TO THE BRIDGE SITE. EXISTING ALIGNMENT IS

THROUGH A WOODED AREA WITH GRADES LESS THAN 10%.

2. WHERE SOUPY MUCK EXISTS, REMOVE MUCK TO A DEPTH

EQUAL TO CRUSHED AGGREGATE DEPTH PRIOR TO PLACING

GEOTEXTILE AND AGGREGATE.

3. RETAIN ROOTS AND ROCKS THAT PROVIDE STRUCTURAL

STRENGTH AND DO NOT PRESENT TRIPPING HAZARD.

V er tic al

C le ar in g Li m it

TRAILWAY

TRAILBED

LC

LC

UPHILL CLEARING LIMIT IS 18" FROM EDGE OF TRAILBED OR TOP OF CUT SLOPE, WHICHEVER IS GREATER.

DOWNHILL CLEARING LIMIT IS 18" FROM EDGE OF TRAILBED OR BOTTOM OF FILL SLOPE, WHICHEVER IS GREATER.

VERTICAL CLEARING LIMIT IS 8' ABOVE FINISHED GRADE.

TRIM BRANCHES FLUSH

WITH TRUNK RATHER

THAN REMOVE TREE.UPHILL

CLEARING LIMIT

DOWNHILL

CLEARING LIMIT

CUT

Hinge

CLEARING LIMITS

CUT

CUT ALL LOGS

CUT

CLEARING LIMIT

UP TO 20%

CRUSHED AGGREGATE SURFACING

6" (min) DEPTH

EXISTING GROUND

GEOTEXTILE

PREPARED TRAILBED

3'

4'-6"

CUT STUMPS TO 6" HIGH

4x12 STAIR STRINGER

2 EACH

∠2 x 2 x 14 TREAD BRACKET

SEE DETAIL THIS SHEET

3 x 12 STAIR TREAD

STEP WIDTH IS 5 ft BETWEEN INSIDE

RAIL FACES, TO MATCH BRIDGE WIDTH.

RISE SHALL BE 6" MIN TO 8" MAX. RISE

SHALL BE EQUAL FOR ALL STEPS.

6x6 POST. BURY 36" (min) AND BACKFILL AS

SHOWN ON SHEET 4.

TOP (ATTACH TO

STAIR TREAD)

∠2 x 2 x 14

SIDE (ATTACH

TO STRINGER)

2" 2"

2"

2"

3"

3"

TREAD BRACKET

PLANK STEPS

2x6 TOP RAIL. ATTACH w/ #10 DECK SCREWS 2 PER RAIL POST AND 18" c/c ALONG SIDE RAIL

2x4 SIDE RAILS. BOLT TO RAIL POST w/ 38" THROUGH BOLTS, 1 PER POST

6x6 POST. BOLT TO STRINGER & LEDGER w/ 3 8"

THROUGH BOLTS, 2 PER STRINGER AND 2 PER

LEDGER END.

3x10 LEDGER

TRAIL BRIDGE

5 ft ( max)

EQ

U A L

EQ

U A L in

M

ID

S

TE

P

TO

T O

P O

F R A

IL

1 ft ( max)

12"

ATTACH TO TREAD AND

STRINGER w/ 38" BOLTS

3x12x 8 ft LONG SILL. PLACE

ON 6" COMPACTED CRUSHED

AGGREGATE. ATTACH TO

STRINGERS w/ TREAD BRACKET

6x6 POST

1.5

TRAILBED WIDTH

2/22/2010 3:12:34 PM

ELEVATION

DRAWING NO. R10875

SHEET 6 Of 8

FOREST SERVICE

U.S. DEPARTMENT OF AGRICULTURE

STANDARD PLANS

For

PLAN SET _ OF _

PREFABRICATED STEEL TRUSS TRAIL BRIDGE

ALASKA REGION (R10)

SPANS LIMITED TO 100 FEET OR LESS

PROJECT DESIGN CRITERIA:

SHEET 1 Of 3

2/22/2010 3:12:43 PM

TYPICAL SECTION

SHEET 7 Of 8

PLAN SET _ OF _

PREFABRICATED STEEL TRUSS TRAIL BRIDGE

ALASKA REGION (R10)

SPANS LIMITED TO 100 FEET OR LESS

PREFABRICATED STEEL BRIDGE SUPERSTRUCTURE:

DESIGN:

MATERIALS:

STEEL FABRICATION:

FIELD TREATMENT:

TREATMENT:

GENERAL NOTES:

TIMBER & LUMBER:SPECIFICATIONS:

TIMBER FABRICATION:

ERECTION PLAN:

RIPRAP ARMORING W/GEOCELLRIPRAP ARMORING

GRADE BEAM FOUNDATIONGRADE BEAM FOUNDATION

No treatment required for a steel truss bridge. If a timber tied arch bridge design is selected, main structural members shall be treated.

SHEET 2 Of 3

2/22/2010 3:12:48 PM

SHEET 8 Of 8

PLAN SET _ OF _

ALASKA REGION (R10)

PREFABRICATED STEEL TRUSS TRAIL BRIDGE

SPANS LIMITED TO 100 FEET OR LESS

TYPICAL SECTION

BEARING DETAIL

ELEVATION - GRADE BEAM

PLAN - GRADE BEAM

SPECIFICATIONS:

CONCRETE:

REINFORCING STEEL:

NOTES:

CONCRETE GRADE BEAM:

BEARING ASSEMBLY:

SHEET 3 Of 3

2/22/2010 3:12:53 PM