Attachment 2 - Drawings.pdf

UNITED STATES DEPARTMENT OF AGRICULTURE

FOREST SERVICE

SULA RANGER DISTRICT

BITTERROOT NATIONAL FOREST

NORTHERN REGION

OFNO SCALE

STD_900-01

WARM SPRINGS TRAIL BRIDGE REPLACEMENT MP 0.1 -

TRAIL CONSTRUCTION, RIP RAP, TIMBER SILL, GABION BASKET PLANS

07/25/2025WARM SPRINGS TRAIL BRIDGE REPLACEMENT

THIS PROJECT

PROJECT LOCATION

THIS PROJECT

07/25/2025

07/25/2025

DRAFT

OF

STD_900-07

NO SCALE

07/25/2025WARM SPRINGS TRAIL BRIDGE REPLACEMENT

BITTERROOT NATIONAL FOREST

SULA RANGER DISTRICT

Feet

40200

EXISTING CONDITIONS

STD_900-07

NO SCALE

R

R

PROPOSED WARMSPRINGS BRIDGE TRAIL CL

2' FREEBOARD

ELEV. Q100

INSTALL NEW 45' L x 8' W TIMBER TRAIL BRIDGE

22.5' STREAM BANK

ELEV 189.59

07/25/2025WARM SPRINGS TRAIL BRIDGE REPLACEMENT

BITTERROOT NATIONAL FOREST

SULA RANGER DISTRICT

Feet

20100

TRAIL PLAN & PROFILE

44' ℄-℄

BEARING

STD_900-07

NO SCALE

1.50

4.80

2.22

6.69

7.0' CLEAR WIDTH

(4) SPA @ ±1' 7

" CTC= 6' 5"

07/25/2025WARM SPRINGS TRAIL BRIDGE REPLACEMENT

BITTERROOT NATIONAL FOREST

SULA RANGER DISTRICT

STRINGER SPACING & RIP RAP DETAIL

STD_900-07

NO SCALE

R

PROPOSED WARMSPRINGS BRIDGE TRAIL CL

07/25/2025WARM SPRINGS TRAIL BRIDGE REPLACEMENT

BITTERROOT NATIONAL FOREST

SULA RANGER DISTRICT

T

T

C

Feet

40200

OPTION ITEM A TRAIL PLAN & PROFILE

07/25/2025WARM SPRINGS TRAIL BRIDGE REPLACEMENT

BITTERROOT NATIONAL FOREST

TYPICAL TRAIL CROSS SECTIONS

STD_911-01

NO SCALE

FILL SECTION

C

BALANCED SECTION

B

FULL BENCH SECTION

A

TRAIL SECTIONS

07/25/2025WARM SPRINGS TRAIL BRIDGE REPLACEMENT

BITTERROOT NATIONAL FOREST

103-0.0 103 0.0 45' 44' 7' 90psf 118psf 20F-V13 AC

"x 31

NO AC 3"x12" SS DF/L 20' 3'

NO 3"x12" YES

AC103-0.0 RAIL 3'-8" X DF/L 12' N/A DF/L

12"x12"x9' 11' 26' 7' Borrow <36" NA GALV NA2"x12"

4" x 8" MINIMUM DECK PLANKS (4" x 12" SHOWN) MAINTAIN 3/8" ± GAP BETWEEN PLANKS3" x 8" MINIMUM DECK PLANKS (3" x 12" SHOWN) MAINTAIN 3/8" ± GAP BETWEEN PLANKS

2" X 8" S4S RAIL CAP

FASTEN TO EACH

POST AND TO RAIL

W/(2)-#10 X 4" WOOD

SCREWS AT 2'-0" ON

CENTER

5' -1

" P O

ST

L

EN

G

TH

10 3/4"

(TYP)

-1

/2

2- 1/

4" 2-

1/ 2"

3 1/2" 3 1/2"

**3 18" X DEPTH

VARIES GLULAM

DIAPHRAGM

STRINGER

STRINGER

BRIDGE W / RAILING SYSTEM

DECK SECTION W / STRINGERS @ 2'-0" MAX O.C.

*SPACE @ 2'-0"

MAXIMUM INCREMENTS

SIZE PER TABLE - 1B

*MINIMUM NUMBER OF STRINGERS IS 3. ADDITIONAL BRIDGE WIDTH

CAN BE ACHIEVED BY ADDING ADDITIONAL GIRDERS AT 2'-0" SPACING

UP TO 9'-0" CLEAR WIDTH.

**DIAPHRAGM DEPTH SHALL BE

APPROXIMATELY 70% OF STRINGER DEPTH.

NOTES:

1) RAILING SYSTEM INCLUDED IN DESIGN ASSUMED AT 40 PLF DEAD

LOAD, EACH SIDE. OTHER APPROVED RAILING SYSTEMS

ALLOWABLE WITHIN THIS DEAD LOAD LIMIT.

2) DESIGN IS CONTROLLED BY LOADS ON THE INTERIOR GIRDER.

2" X 6" S4S RAIL, FASTEN RAILS TO

POSTS W/(2)-#10 X 4" WOOD

SCREWS AT EACH CONNECTION

4" X 6" POST FABRICATE

W/TAPERED END (TOP) AND

W/(2)-13/16"Ø HOLES AT BOTTOM

4"Ø BOLT X (VERIFY LENGTH) W / NUT AND

(2)-OVERSIZED MALLEABLE IRON WASHERS

3" X 8" MINIMUM DECK PLANKS (3" X 12" SHOWN)

4" X 6" X 1'-2" S4S BLOCKING DIAPHRAGM,SEE SHEET

3b FOR DETAILS

30°

CLEAR WIDTH

NOT TO EXCEED 7'-0"

2" X 8" MINIMUM

RUNNING PLANKS

2" X 12" SHOWN

STRUCTURE

3'-8"

VARIES

2'-6"

MAXIMUM

3" X 6" BACKING PLANK STIFFENER ATTACH W/(2)-1/2"Ø

BOLTS W/(2)-MALLEABLE IRON WASHERS PER BACKING

PLANK SPACED DIAGONALLY FROM EACH OTHER

ABUTMENT

ABUTMENT

VARIES

2'-6"

MAXIMUM

POSTS @ 5' - 0" MAXIMUM

RAIL CAP (SHOWN DASHED) 5" RINGSHANK NAILS SEE

NOTES FOR SPACING

6" RINGSHANK NAILS

1 12 "

BA

C

KW

AL

L W

ID

TH

(V

AR

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S)

PLAN VIEW ABUTMENT

ABUTMENT

STRINGER LENGTH OUT - OUT AND RAILING SYSTEM

STRINGER SPAN (℄ BEARING - ℄ BEARING

6" 6"

RAILING SYSTEM SEE

THIS SHEET FOR DETAILS

BA

C

KW

AL

L H

EI

G

H T

(V

AR

IE

S)

SUBSTRUCTURE SHOWN

FOR ILLUSTRATION ONLY

SEE SHEET 4 FOR DETAILS ELEVATION VIEW

3 18" X DEPTH VARIES

GLULAM DIAPHRAGM SEE

SHEET 3b FOR DETAILS

4" x 6" POST (TYP)

POSTS SHALL BE

VERTICAL

GLULAM TIMBER

STRINGER PER

TABLE - 1B

GRADE SHOWN = 0.0%

- FABRICATE GLULAM STRINGERS WITH CAMBER BASED ON A 900 FOOT RADIUS.

- RUNNING PLANKS NOT SHOWN FOR CLARITY.

2" X 6" X 4'-6" VERTICAL END

SUPPORT FOR RAILS (TYP)

(2)-16d NAILS INTO EACH RAIL

W/(2)-3/8"Ø X 3 1/2" LAG

SCREWS AT BASE

1. FASTEN DECK PLANKS TO STRINGERS WITH TWO ROWS 60d (6-INCH) RING SHANK NAILS PER PLANK

AT EACH STRINGER. ALTERNATE CENTERS.

2. FASTEN RUNNING PLANKS TO DECK WITH 40d (5-INCH RING SHANK) NAILS AT 24-INCHES SPACING.

ALTERNATE CENTERS WITH TWO AT EACH END.

3. SPLICE RAILS AT POSTS. RAILS SHALL BE CONTINUOUS FOR TWO POST SPACES. DO NOT LOCATE

MORE THAN ONERAIL SPLICE AT ANY ONE POST.

4. THE MINIMUM STRINGER DEPTH FOR BRIDGES WITH PEDESTRIAN RAILS IS 15-INCHES.

5. BRIDGES WITH STRINGER DEPTHS LESS THAN 15-INCHES SHALL HAVE CURBS ONLY.

INSTALL DIAPHRAGMS AT MID-SPAN AND WITHIN A DISTANCE OF THE DEPTH FROM THE ABUTMENTS

INSTALL DIAPHRAGMS AT THIRD POINTS OF SPAN AND WITHIN A DISTANCE OF THE DEPTH FROM THE ABUTMENTS

INSTALL DIAPHRAGMS AT QUARTER POINTS OF SPAN AND WITHIN A DISTANCE OF THE DEPTH FROM THE ABUTMENTS

SELECT STRINGER SIZE AS THE LARGER OF THE PEDESTRIAN OR GROUND SNOW LOAD SIZE REQUIRED FOR THE

SITE CONDITIONS

STRINGER LENGTH EQUAL TO STRINGER SPAN PLUS ONE FOOT

REQUIRES REGIONAL BRIDGE ENGINEER APPROVAL

LOAD COMBINATIONS: 1.25 DL + 1.75 PL 1.25 DL + 1.75 SL

DEFLECTIONS: PL = L/360, TL = L/240 SL = L/240, TL = L/180

PL = PEDESTRIAN LOAD, DL = DEAD LOAD, SL = SNOW LOAD

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.DATE

PROJECT NO.

DRAWING SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

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R06

PACIFIC NORTHWEST REGION

GLULAM

STRINGER TRAIL

BRIDGE

REGIONAL STANDARD

R6-STD-963-10

3 GLULAM STRINGER

DESIGN TABLE AND

DETAILS

K.VAN HECKE

S.WEISNER

E.ANTRIM

*TABLE - 1B: 3 GLULAM STRINGER SIZE REQUIREMENTS - LRFD - MAXIMUM SPACING 2'-0" INCREMENTS

** STRINGER

SPAN (FEET)

SPECIES - AC / AC, COMBINATION SYMBOL 20F - V13

DESIGN LOADING IN POUNDS PER SQUARE FOOT

PEDESTRIAN LIVE LOAD GROUND SNOW LOAD

***65 90 150 200 300 400 500 600

25 5 1/8" x 13 1/2" (4.) 5 1/8" x 15" 5 1/8" x 18" 5 1/8" x 19 1/2" 5 1/8" x 22 1/2" 5 1/8" x 24" 5 1/8" x 25 1/2" 5 1/8" x 27"

30 5 1/8" x 16 1/2" 5 1/8" x 18" 5 1/8" x 21" 5 1/8" x 22 1/2" 5 1/8" x 27" 5 1/8" x 30" 5 1/8" x 33" 6 3/4" x 30" 35 5 1/8" x 19 1/2" 5 1/8" x 21" 5 1/8" x 24" 5 1/8" x 27" 5 1/8" x 30" 5 1/8" x 33" 6 3/4" x 33" 6 3/4" x 36" 40 5 1/8" x 21" 5 1/8" x 24" 5 1/8" x 28 1/2" 5 1/8" x 31 1/2" 5 1/8" x 34 1/2" 6 3/4" x 34 1/2" 6 3/4" x 37 1/2" 6 3/4" x 40 1/2" 45 5 1/8" x 24" 5 1/8" x 27" 5 1/8" x 31 1/2" 5 1/8" x 34 1/2" 6 3/4" x 36" 6 3/4" x 39" 6 3/4" x 42" 6 3/4" x 45" 50 5 1/8" x 27" 5 1/8" x 30" 5 1/8" x 34 1/2" 6 3/4" x 34 1/2" 6 3/4" x 39" 6 3/4" x 43 1/2" 6 3/4" x 46 1/2" 8 3/4" x 45" 55 5 1/8" x 30" 5 1/8" x 33" 6 3/4" x 33" 6 3/4" x 37 1/2" 6 3/4" x 43 1/2" 8 3/4" x 43 1/2" 8 3/4" x 46 1/2" 8 3/4" x 49 1/2" 60 5 1/8" x 33" 5 1/8" x 34 1/2" 6 3/4" x 37 1/2" 6 3/4" x 42" 8 3/4" x 43 1/2" 8 3/4" x 48" 8 3/4" x 51" 8 3/4" x 55 1/2"

A

A

2"

2"

2" 101

2"

2"

2"

16"Ø (TYP)

2'-0"

PLAN-CURB BLOCK

AT SPLICE

PLAN-CURB BLOCK

2"

2"

16"Ø (TYP)

2"

2" 101

2"

2"

2'-0"

6"

CURB

DEPTH

6"

3"

CURBCURB

BLOCK

8"Ø TIMBER BOLTS

(TYP)CURB

6"

3"

DECK PLANKS

2" X 6" CONTINUOUS PLATE

ELEVATION - CONNECTION

AT SPLICE

ELEVATION - TYPICAL

CONNECTION

SOLID SAWN CURB CONNECTION DETAILS

DIAPHRAGM

LENGTH

(VARIES)

STRINGER

SPACING

(VARIES)

STRINGER

16"Ø

HOLE

(TYP)

4"

4"

2"

2"

D

IA

PH

R

AG

M

D

EP

TH

8" X 3 8" BAR

8" X 3" X 3"

BAR SPACER

X BRACE (TYP)

16"

FRAME (TYP)

G

STRINGER WIDTH

ST

R

IN

G

ER

D

EP

TH

(V

AR

IE

S)

4" Ø HEX BOLT AND NUT

W / MALLEABLE IRON

WASHER THIS SIDE

8"Ø X 1' - 3" TIMBER BOLT & NUT FIELD

DRILL 11

16"Ø HOLE IN DECK PLANKS AND

CONTINUOUS 2" X 6" PLATE TREAT HOLES

PER GENERAL NOTES

6" X 6" CURB

3" X 6" X 2' - 0" CURB BLOCKS

SPACE AT 5' - 0" CENTERS

3" DIMENSIONAL

DECK PLANKS

2" X 6" X CONTINUOUS PLATE

STRUCTURE

OUT - TO - OUT DECK PLANKS

CLEAR WIDTH

7'-0" MAXIMUM*

2" X 8" MINIMUM

RUNNING PLANKS

2" X 12" SHOWN

6" 6"

**31

8" X DEPTH VARIES

GLULAM DIAPHRAGM

7"

SIMPSON HU312 FACE

MOUNT HANGER (OR EQUAL)

(TYP) AT DIAPHRAGMS*SPACE @ 2' - 0"

MAXIMUM INCREMENTS

SIZE PER

TABLE 1B

7"

GLULAM

DIAPHRAGM

STRINGER

STRINGER

FABRICATION: SUBMIT SHOP DRAWINGS FOR ALL BRIDGE COMPONENTS (EXCEPT TIMBER RUNNING PLANKS). SHOW ALL DIMENSIONS AND FABRICATION DETAILS FOR ALL CUT OR BORED TIMBER. DO NOT FIELD DRILL HOLES IN TREATED MATERIALS EXCEPT AS ALLOWED

OR APPROVED BY THE CO OR AS SHOWN ON THE PLANS.

HARDWARE AND STRUCTURAL STEEL: SEE PROJECT DESIGN CRITERIA FOR STEEL HARDWARE FINISH. GALVANIZED OR UNFINISHED HARDWARE: MEET THE REQUIREMENTS OF AASHTO M270, GRADE 36, WITH NUTS AND BOLTS CONFORMING TO ASTM A307, GRADE A.

WEATHERING STEEL AND HARDWARE: MEET THE REQUIREMENTS OF AASHTO M270, GRADE 50W, WITH BOLTS AND NUTS CONFORMING TO ASTM F3125, GRADE A325, TYPE 3. USE MALLEABLE IRON WASHERS AGAINST WOOD UNLESS OTHERWISE NOTED.

WELD STRUCTURAL STEEL IN ACCORDANCE WITH AWS D1.1, SUITABLE FOR THE GRADE OF STEEL AND INTENDED USE OR SERVICE, AS

CALLED FOR OR APPROVED BY THE C.O.

FIELD TREATMENT: FIELD TREAT USING COPPER NAPHTHENATE (2% SOLUTION) FOR ALL ABRASIONS AND FIELD CUTS IN TREATED MATERIAL AS APPROVED BY THE C.O. CAREFULLY TRIM OR DRILL AND GIVE THREE BRUSH COATS OF THE FIELD TREATMENT SOLUTION WHERE APPROVED FIELD DRILLING OF BOLT OR NAIL HOLES IS REQUIRED, FILL THE HOLES WITH PRESERVATIVE PRIOR TO INSERTING THE FASTENERS. ENSURE TREATMENT IS NOT RELEASED ON THE GROUND OR IN THE STREAM

TREATMENT: SEE PROJECT CRITERIA FOR MEMBERS IDENTIFIED TO BE TREATED AND FOR TREATMENT TYPE. FURNISH TREATED MATERIALS IN CONFORMANCE WITH CURRENT AMERICAN WOOD PROTECTION ASSOCIATION (AWPA) SPECIFICATIONS USING THE TREATMENT MATERIALS LISTED BELOW AND IN COMPLIANCE WITH THE REQUIREMENTS OF THE CURRENT EDITION OF WESTERN WOOD PRESERVERS INSTITUTE (WWPI) "BEST MANAGEMENT PRACTICES FOR THE

USE OF TREATED WOOD IN AQUATIC ENVIRONMENTS".

SPECIFICATIONS:

DESIGN: AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, 8TH EDITION (2017) AND AASHTO LRFD GUIDE SPECIFICATIONS FOR THE DESIGN OF PEDESTRIAN BRIDGES, DECEMBER, 2009, EXCEPT AS NOTED. DEFLECTION IN ACCORDANCE WITH FOREST SERVICE

DIRECTIVES, AS SHOWN.

CONSTRUCTION: STANDARD SPECIFICATIONS FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS (FP-14) AND STANDARD SPECIFICATIONS FOR CONSTRUCTION OF TRAILS AND TRAIL BRIDGES ON FEDERAL PROJECTS., GENERAL NOTES:

MATERIALS:

TIMBER & LUMBER:

SOLID SAWN TIMBER: CONFORM TO THE REQUIREMENTS OF THE GRADING RULES AGENCY FOR THE SPECIES, TYPE, AND

GRADE SPECIFIED BELOW. UNLESS SHOWN OTHERWISE, ACCEPTABLE GRADING RULES AGENCIES ARE WWPA OR WCLIB.

GLULAM MEMBERS: CONFORM TO THE AMERICAN NATIONAL STANDARD, STANDARD SPECIFICATIONS FOR STRUCTURAL

GLUED LAMINATED TIMBER OF SOFTWOOD SPECIES (ANSI 117) FOR THE COMBINATION, SPECIES, USE, AND APPEARANCE

SPECIFIED BELOW.

GLULAM STRINGERS AND DIAPHRAGMS

COMBINATION SYMBOL 2OF-V13, SPECIES - AC/AC DRY CONDITION USE AND INDUSTRIAL APPEARANCE

SILLS, AND BACKING PLANKS

UNTREATED/DECAY RESISTANT: ALASKA YELLOW OR WESTERN RED CEDAR, S4S OR ROUGH SAWN NO. 2 SUBSTITUTION ALLOWABLE WITH GLULAMINATED MATERIAL IN ACCORDANCE WITH ABOVE FOR STRINGERS.

DECKING

UNTREATED/DECAY RESISTANT: ALASKA YELLOW OR WESTERN RED CEDAR, FULL ROUGH SAWN NO. 2

RUNNING PLANKS

RAILS, POSTS (SEE PROJECT CRITERIA)

SAWN: ALASKA YELLOW OR WESTERN RED CEDAR, S4S, SELECT STRUCTURAL,

SILLS, BACKING PLANKS, CRIBS, TIMBER WALLS, IF TREATED

AWPA USE CATEGORY SYSTEM (U1) FOR USE CATEGORY 4B GROUND CONTACT - HEAVY DUTY (UC4B) COPPER NAPHTHENATE (CuN) IN HEAVY OIL (TYPE A SOLVENT)

*MINIMUM NUMBER OF STRINGERS IS 3. ADDITIONAL BRIDGE

WIDTH CAN BE ACHIEVED BY ADDING ADDITIONAL GIRDERS AT

2'-0" MAXIMUM SPACING UP TO 7'-0" CLEAR WIDTH. ADDITIONAL

DESIGN CONSIDERATIONS ARE NEEDED FOR CLEAR WIDTHS

EXCEEDING 7'-0" AND ARE NOT COVERED BY THIS DESIGN.

**DIAPHRAGM DEPTH SHALL BE APPROXIMATELY 70% OF

STRINGER DEPTH..

BRIDGE W / CURBS ONLY DECK

SECTION W / STRINGERS @ 2' - 0" MAXIMUM O.C.

ELEVATION - SECTION A - A GLULAM

DIAPHRAGM ALTERNATE

GLULAM DIAPHRAGM ALTERNATE IS APPLICABLE FOR ALL STRINGER DEPTHS.

OFFSET DIAPHRAGMS

AT INTERIOR STRINGERS

WHERE 3 OR MORE

STRINGERS ARE

REQUIRED

6"

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.DATE

PROJECT NO.

DRAWING SHEET NO.

OFSHEET

United States Department of Agriculture Forest Service

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PACIFIC NORTHWEST REGION

GLULAM

STRINGER TRAIL

BRIDGE

REGIONAL STANDARD

R6-STD-963-10

GENERAL NOTES,

CURBS, STEEL

DIAPHRAGMS

K.VAN HECKE

S.WEISNER

E.ANTRIM

NOTES:

ABUTMENT

STRINGER ℄

STRINGER

8"

2"

8"

1" SLOT

16"Ø

X 1" SLOT

STRINGER

WIDTH MINUS

1/4"

STRINGER

WIDTH PLUS

4"

2"

(TYP)

VARIES

STRINGER

WIDTH PLUS

4"

2" 41

2"

2"

2" 2"

2" X WIDTH

VARIES X 6"

ELASTOMERIC

PAD (TYP) (50

DUROMETER)

8"Ø

2 HOLES

3/4" HEX NUT

3/4"

PLAIN

WASHER

FASTEN DECK PLANK TO TOP BACKING PLANK

USING 7" RINGSHANK NAILS ON 12" CENTERS

FASTEN EACH BACKING PLANK TO

EACH STRINGER USING

(3)-7" RING SHANK NAILS

3/4"Ø BOLT & NUT W/(2)-MALLEABLE IRON WASHERS

3-INCH DIMENSIONAL

BACKING PLANKS

12" X 12" CONCRETE SILL

**FOUNDATION

3" MINIMUM

CLEAR COVER

(4)-#5 REBAR

CONTINUOUS IN SILL

W/2" CONCRETE CLEAR

COVER AT ENDS

3/4"

CHAMFER

(TYP)

(2)-3/4"Ø

ANCHOR

BOLT AT

EACH

BEARING

SHOE

STRINGER

PER PLANS

TOP OF DECK

PLANKS BEARING SHOE

2" MINIMUM CLEAR COVER

FASTEN DECK PLANK TO TOP OF BACKING PLANK

USING 7" RINGSHANK NAILS ON 12" CENTERS

FASTEN EACH BACKING PLANK TO

EACH STRINGER USING

(3)-7" RING SHANK NAILS

3" DIMENSIONAL BACKING PLANKS

**FOUNDATION

3/4"Ø BOLT & NUT

W/(2)-MALLEABLE IRON WASHERS

*TIMBER SILL

(2)-3/4"Ø x 9" ANCHOR BOLT

AT EACH BEARING SHOE

STRINGER

PER

PLANS

TOP

OF

DECK

PLANKS

BEARING SHOE

FULL PENETRATION

SPECIFICATIONS: MATERIALS AND CONSTRUCTION OF THIS STRUCTURE IN ACCORDANCE WITH THE STANDARD SPECIFICATION FOR CONSTRUCTION OF ROADS AND BRIDGES ON FEDERAL HIGHWAY PROJECTS (FP-14) AND STANDARD

SPECIFICATIONS FOR CONSTRUCTION OF TRAILS AND TRAIL BRIDGES ON FEDERAL PROJECTS,

CONCRETE: USE STRUCTURAL CONCRETE WITH A 7 SACK MINIMUM MIX, 4 - 6% AIR ENTRAINMENT, SLUMP NOT EXCEEDING 4 INCHES, AND MAXIMUM AGGREGATE SIZE OF 3/4-INCH. SUBMIT A MIX DESIGN TO BE APPROVED BY THE C.O., PROVIDE A

TROWELED SURFACE FINISH UNLESS OTHERWISE SPECIFIED.

REINFORCING STEEL: FURNISH REINFORCING STEEL CONFORMING TO ASTM A615 (AASHTO M31), GRADE 40 OR 60. PROVIDE

2-INCH CLEAR CONCRETE COVER FOR ALL REBAR, UNLESS NOTED OTHERWISE ON THE PLANS.

HARDWARE AND STRUCTURAL STEEL: SEE SUPERSTRUCTURE DRAWINGS FOR PROJECT DESIGN CRITERIA AND GENERAL

NOTES.

TIMBER & LUMBER: REFER TO THE GENERAL NOTES ON SHEETS -03a OR -03b FOR TIMBER & LUMBER SPECIFICATIONS, ALLOWABLE USE OF TREATMENT, AND FIELD TREATING OF WOOD

LAG SCREW INSTALLATION: PRE-BORE LAG SCREW HOLES USING TWO DIAMETERS, ONE FOR THE SHANK AND ONE FOR THE THREADS. THE LEAD HOLE FOR THE SHANK IS TO BE 1/16-INCH LARGER THAN THE SHANK DIAMETER AND IS TO BE BORED TO THE DEPTH OF PENETRATION OF THE SHANK. THE LEAD HOLE FOR THE THREADED PORTION IS TO BE 70 PERCENT OF THE BOLT DIAMETER AS SHOWN ON THE PLANS AND IS TO BE BORED AT LEAST TO THE LENGTH OF THE THREADS. DO NOT

DRIVE LAG SCREWS WITH A HAMMER.

4"

* TIMBER SILL CAN BE EITHER 12" X 12" SOLID SAWN 10 3/4" X 12" GLUE-LAMINATED, BUILT-UP 3" X 12", 4" X 12", & 6" X 12" TREATED MEMBERS.

** SEE STANDARD DRAWINGS 965-10, 965-20, 965-30, & 965-40 FOR FOUNDATION ALTERNATIVES. ENSURE FOUNDATIONS ARE CONSTRUCTED WITH CONSIDERATION FOR SITE CONDITIONS RELATIVE TO FOUNDATION MATERIAL, NOMINAL BEARING PRESSURES, WATER TABLES, AND PROXIMITY TO ADJACENT SLOPES. DESIGN THE FOUNDATIONS IN ACCORDANCE WITH AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS.

ABUTMENT

4"

Ø X

H

EA

VY

H

EX

ST

R U

C

TU

R

AL

B O

LT

EM

BE

D

" I N

TO

C

O N

C R

ET

E

SI

LL

CONCRETE SILL

ANCHOR BOLT DETAIL

CONCRETE SILL

CONNECTION DETAIL

TIMBER SILL

CONNECTION DETAIL

BEARING SHOE DETAIL

SIDE VIEWEND VIEW

MATERIAL = 12" STEEL PLATE A36

PLAN VIEW

DRAWN

DESIGNER

STAMPS, LOGOS, AND SEALS

PROJECT NAME

DRAWING TITLE

CHECKED

ARCHIVE NO.DATE

PROJECT NO.

DRAWING SHEET NO.

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United States Department of Agriculture Forest Service

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PACIFIC NORTHWEST REGION

GLULAM

STRINGER TRAIL

BRIDGE

REGIONAL STANDARD

R6-STD-963-10

BEARING AND SILL

DETAILS

K.VAN HECKE

S.WEISNER

E.ANTRIM

Warmsprings R6_STD-963-10_STANDARD GLULAM BRIDGE