Polk5-footing.pdf

LC

SPACER JOINED TO UPPER

PLANK WITH 70d SPIKES, 2' C-C AND AT SPLICE.

START SPIKES 6" FROM

PLANK END. PREBORE

9/64" Ø HOLES

BACKWALL DETAILS

TOP VIEW

NOT TO SCALE

NOTE: BRIDGE SUPERSTRUCTURE ABOVE GIRDERS

AND END BRACE BOLTS ARE NOT SHOWN

6" LEG 4" LEG

SUPPORT ANGLE DETAIL

6" x 4" x 1/2" STEEL ANGLE 2' LONG

NOT TO SCALE

NOTE: WALL

MAY BE CUT OFF

AS SHOWN TO

SUIT SITE

CONDITIONS.

FRONT SIDE

IS SHOWN.

INSET BOLTS 3"

FROM PLANK

EDGES AS

SHOWN

SEE END BRACE

BOLT DETAIL

FOR BOLT SPACING

FRONT VIEW

3/4" Ø x14" BOLTS

WITH MI WASHERSFILL SIDE

6" x 12" x 2'-0" SPLICE PIECE

TOP VIEW

BILL OF MATERIALS - ONE ABUTMENT

ITEM NUMBER

REQUIRED SIZE LENGTH

WEIGHT

(LBS)

TREATED TIMBER:

FOOTING TIMBERS

BACKWALL PLANKS

*SPLICE PIECES

END BRACES

HARDWARE:

FOOTING BOLTS

BACKWALL BOLTS

LAG BOLTS

LAG BOLTS

*BOLTS

*MALLEABLE IRON WASHERS

STEEL ANGLE

2 12"x12" 18' 1800

12"x12" 4' 3800 ---- 6"x12" 152 LF 3800 4 6"x12" 2' 100 2 6"x12" 14' 700

4 ---- 2 12" 16

8 3/4"Ø 7" 8

26"

72 3/8"Ø 12" 35 8 3/4"Ø 8" 10

40 3/4"Ø 14" 84 2 6"x4"x1/2" 24" 31

NOTES:

11.BEARING PLATE SIZE AND BOLT HOLE SPACING OF

MODULAR BRIDGE WILL MATCH THE LOCATION AND

EDGE DISTANCE REQUIREMENTS OF THE DESIGN.

SUBMIT ALTERNATIVE DESIGNS TO THE CO FOR

APPROVAL.

1-1/4

BACKFILL AND COMPACT

AROUND END BRACE PRIOR TO

BACKFILLING AGAINST BACKWALL

BACKWALL

SELECT BACKFILL

(REF. SPEC.______)

BACKWALL EVEN WITH TOP OF DECK CROSS TIES FOR

TEMPORARY INSTALLATIONS.

EXTEND RUNNING PLANKS OVER TOP OF BACKWALL

FOR PERMANENT INSTALLATIONS.

NOTE: END BRACE BOLTS ARE NOT SHOWN

BOLT BACKWALL TO OUTSIDE GIRDERS THROUGH

LIFT HOLES PROVIDED IN GIRDER BACKPLATES

USE 7/8" Ø x 7-1/2" BOLTS w/ MALLEABLE

IRON WASHERS EACH END.

DO NOT

FIELD CUT

EXPOSED

END PLANKS

3/4" Ø x 14" BOLTS WITH

MI WASHERS (TYPICAL). SEE

END BRACE BOLT DETAIL FOR

BOLT SPACING

6" x 12" END BRACE

CUT TO FIT AS SHOWN

END BRACE BOLT DETAIL

NOT TO SCALE

END BRACE

BACKWALL PLANK 4"

4"

4"

3" (TYPICAL)

ALL BACKWALL SPLICES SHALL OCCUR

WITHIN THE LIMITS OF THE OUTER GIRDERS

NOT TO SCALE

CL

1-1/8" Ø x 12" LAG BOLTS IN

13/16" Ø PREBORED HOLES.

H0LES LOCATED AS SHOWN

(TYPICAL)

6" x 4" x 1/2" STEEL ANGLE BACKWALL SUPPORT.

6" ANGLE LEG LOCATED AGAINST BACKWALL

PLANKS (SEE ANGLE DETAIL)

LC

6" x12" BACKWALL PLANKS

BRIDGE SUPERSTRUCTURE DIAPHRAMS

AND DIAGONAL BRACING ARE NOT

SHOWN FOR CLARITY

NOT TO SCALE

BACK VIEW FRONT VIEW

6" x 4" x 1/2" SUPPORT ANGLE. 6" LEG

AGAINST BACKWALL (SEE DETAIL)

NOTE: SPACER SPIKES ARE NOT SHOWN

2'-0"

MIN.

3/4" Ø x 7" LAG BOLTS

PREBORE 13/16" Ø

(TYPICAL)

FOOTING PLANKS

FOOTING CROSS TIMBERS

MALLEABLE IRON WASHERS

*SPIKES

SPIKES

BOLTS

NUMBER MAY VARY WITH LENGTH OF PLANKS USED

*ASSUMES SPACERS CUT FROM FULL SIZE PLANKS

2 6"x12" 18' 900

3/4"Ø 3/4"Ø

2 7/8"Ø 7-1/2" 4 7/8"Ø

4 1-1/8"Ø

14 70d 7" 2

CL

TOP VIEW

EXPLODED FRONT VIEW

3/4" Ø x 26" BOLTS WITH MALLEABLE IRON

WASHERS EACH END (TYPICAL)

6" x 12" PLANK3/8" x 12" SPIKES (TYPICAL)

NOTE: PREBORE

13/16" Ø

BOLT HOLES

PRIOR TO TREATING

TIMBERS. PREBORE

9/32" Ø HOLES

FOR 3/8" Ø SPIKES.

12" x 12" x 4'-0" CROSS TIMBERS (TYP)

12" x12" x 18'-0"

TIMBERS

SIDE VIEW

3" (TYPICAL)

6" x 12" x 18'-0"

PLANKS

TYPICAL BACKWALL BACKWALL CUTOFF

DETAIL

6" (TYPICAL)

BACKWALL PLANK SPLICE DETAIL

1'-31 2"

SIDE VIEW

NOT TO SCALE

NOT TO SCALE

6" x 12" BACKWALL PLANKS

15'-6" 14'-3"

13'-0"

11'-8"

6'-3"

9'-0"

7'-9"

6" x 12" RANDOM

LENGTH BACKWALL

PLANKS (TYPICAL)

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BRIDGE

4'-0" 2'-0"

3" (TYPICAL)

6"

6"

1-3/4"2-1/2"

2' 6"

3"

NOT TO SCALE

FOOTING FABRICATION DETAILS

ANGLE SUPPORT

NOT SHOWN

1'-6" MIN.

ANGLE SUPPORT

NOT SHOWN

13/16" Ø

(TYPICAL)

2'-6" 13'-0" 2'-6"

3"

4"

2' MIN.

BEARING PLATE INSET

3" FROM EDGE OF

FOOTING TIMBER

IN LIEU OF EXTENDING END BRACE, BRACE

MAY BE CUT OFF AT GROUND LEVEL IF

ANCHORED TO A DEADMAN

3/4" Ø x 8" BOLTS

IN 13/16" Ø HOLES.

USE M.I. WASHER

ON TIMBER SIDE

(TYPICAL)

TOP OF CURB TO BE 15

inches (min) ABOVE TOP

OF WEARING SURFACE.

POLK BRIDGE EMERGENCY INSTALLATION HAMILTON FOOTINGS 60'+

CRAIG RANGER DISTRICT

M.Ritter 5/80

J.Pickens 11/01

E.Oman 3/03

3/06 ADDED NOTE 11 T. LAURENT

Autocad Drawing Name 5 5

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:04/03