900451 N Adams - Final final Signed Plans.pdf

PDF 10 MB Posted

Attached to
2026 ITB 13 North Adams Overlook Removal
Solicitation number
S-KE0010-00017061
Issued by
Lane County, Oregon

About this file

This file consists of standard construction drawings and specifications from the City of Eugene, Oregon, specifically addressing tree protection, inlet protection, sediment barriers, sediment fencing, and slope matting requirements for a project at 900 N Adams. The drawings establish critical root zone (CRZ) protection protocols for trees, with specific radius requirements based on tree diameter measured at breast height (DBH). For trees 4 inches DBH or smaller, the CRZ extends at least 6 feet from the trunk; for larger trees, the radius extends at least 1 foot 6 inches per inch of diameter. The specifications prohibit soil grade changes, compaction, material storage, and root disturbance within the CRZ except as approved, and require protective fencing with specific signage. No roots over 2 inches may be cut without approval from the Urban Forester or approved arborist.

The document includes detailed specifications for six types of inlet protection (geotextile/wire mesh/aggregate, prefabricated filter inserts, compost filter sock or wattle, sod protection, curb inlet sediment dam, and wattle barrier with filter insert), four types of sediment barriers (biofilter bags, fiber roll/wattles, and sand bags), standard sediment fence installation with specific post spacing based on slope grade, and slope and channel matting requirements. All materials must comply with current Oregon Standard Specifications and Oregon Standard Drawings 2024. The plans were finalized with the most recent notation updates dated January 2021 and February 2020. Contact for additional information is provided through the City of Eugene Public Works Engineering department at (541) 682-5291.

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Other files

File Type Posted
900451 specifications.pdf PDF
900451 Instructions to Bidders~1.pdf PDF
900451 Bid Forms.pdf PDF
900451 contract and bonds.pdf PDF

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NOTES:

1. THE CRITICAL ROOT ZONE (CRZ) FOR TREES 4'' DIAMETER AT BREAST HEIGHT (DBH - MEASURED AT 4'-6" ABOVE GRADE) OR SMALLER SHALL BE

AN AREA WITH A RADIUS AT LEAST 6' FROM THE TRUNK.

2. THE CRZ FOR TREES OVER 4'' DBH SHALL BE AN AREA WITH A RADIUS OF AT LEAST 1' 6'' FROM THE TRUNK FOR EVERY 1'' OF DIAMETER SIZE.

3. NO SOIL GRADE CHANGES OR COMPACTION SHALL TAKE PLACE WITHIN THE CRZ, EXCEPT AS APPROVED.

4. NO STORAGE OF MATERIAL SHALL BE ALLOWED WITHIN THE CRZ.

5. IF WORK IS DONE WITHIN THE CRZ, CARE MUST BE TAKEN TO MINIMIZE ROOT DISTURBANCE. SPECIAL CARE SHALL BE TAKEN DURING EXCAVATION TO AVOID DAMAGE TO TREE ROOTS. LOCATE EXISTING TREE ROOTS USING HAND TOOLS, AN AIRSPADE, VACUUM EXCAVATION, OR OTHER APPROVED METHODS.

6. PROTECTIVE FENCING IS REQUIRED WHEN THE WORK AREA IS WITHIN THE CRZ OF TREES, EXCEPT WHERE PORTIONS OF THE CRZ ARE

COVERED WITH PAVEMENT SUCH AS STREETS OR WALKS.

7. NO ROOT OVER 2'' SHALL BE CUT WITHOUT APPROVAL OF THE URBAN FORESTER (OR AN APPROVED ARBORIST). ROOTS SHALL BE CUT WITH APPROVED SAWS.

NO ROOTS OVER 2" SHALL BE CUT OR TORN DURING TRENCHING WITH POWER EQUIPMENT SUCH AS BACKHOES AND TRENCHERS.

FOR MORE INFORMATION CONTACT

OR THE CITY OF EUGENE,

PUBLIC WORKS,

ENGINEERING

(541) 682-5291

TREE PROTECTION

ZONE

KEEP OUT

WOOD, CHAIN LINK OR ORANGE

POLY CONSTRUCTION FENCING.

6' FENCE STAKES, TYP.

ZONE OF PROTECTION

4' MIN.

6' MAX.

BETWEEN STAKES

PROTECTIVE FENCING

STREET

SIDEWALK

CRITICAL ROOT ZONE -

SEE NOTES BELOW TO

DETERMINE SIZE

PROTECTIVE FENCING

AT EDGE OF CRITICAL

ROOT ZONE. NO

FENCING REQUIRED

OVER HARD SURFACES

TREE

TREE

PLANTER STRIP

LS120

TREE PROTECTION

TREE PROTECTION NOTICE

CITY OF EUGENE

STANDARD DRAWING

AMENDMENT

REVISIONS

DATE DESCRIPTION

TYPICAL STREET TREE

PROTECTION

TYPICAL TREE

PROTECTION

(NO PAVED SURFACES)

FENCING

01/16 UPDATED NOTICE SIGN AND NOTES LANGUAGE

02/20 DETAIL UPDATES

01/21 NOTES UPDATE

the current Oregon Standard Specifications.

All materials shall be in accordance with

DATE REVISION DESCRIPTION

OREGON STANDARD DRAWINGS

DATE

SDR

BOOK NO.

CALC.

Professional Engineer.

first consulting a Registered and should not be used without sole responsibility of the user principles and practices, is the generally accepted engineering designed in accordance with

Standard Drawing, while

The selection and use of this

RD1010

TYPE 2, 3, 6, 7, 10 AND 11

INLET PROTECTION

20-JAN-2021N/A

20" min. 20" min.

Flow Flow

Drainage grate

Flo w

Flow water

Filtered water

Filtered

NOT TO SCALE

NOT TO SCALE NOT TO SCALE

NOT TO SCALE

NOT TO SCALE

NOT TO SCALE

COMPOST FILTER SOCK OR WATTLE - TYPE 7

GEOTEXTILE/WIRE MESH/AGGREGATE - TYPE 2 PREFABRICATED FILTER INSERT - TYPE 3

SOD PROTECTION - TYPE 6

CURB INLET SEDIMENT DAM - TYPE 10 WATTLE BARRIER WITH FILTER INSERT - TYPE 11

CURB INLET PERSPECTIVE VIEW

AREA DRAIN PERSPECTIVE VIEW

AREA DRAIN PLAN

compost filter socks

Sandbags are not necessary for sandbags to hold wattles in place.

Compost filter sock or wattle. Use

Flo w

Wire tied (Typ.)

grate

Drainage

(Typ.)

Surface flow

3' mi n.

F lo w

Flow

Flow

Curb face inlet

3' mi n.

curb inlet opening to scale to show

Straw wattle not drawn

Insert -Type 3, (not shown)

Prefabricated Filter

Overflow spillway

Catch basin

F lo w

Curb face inlet

Flow vertical bars

Zip-tie to

Flow

Zip-ties over inlet mouth) dam (fit snugly

Curb inlet sediment

Va

r. 3

6" to sediment dam

Curb inlet

3' OC to hold in place end of wattle and

Place a sandbag at each or wattle filter sock

Compost

Inside diameter

12" plans and notes wattle, size varies. See

Compost filter sock or flo w (typ

Su rface not feasible when staking is

Secure with zip-tie around inlet basin

Min. 6' of sodFlow

Flow

Flow

Flow

#5 Rebar

Geotextile insert overlap

Sewn 6"

#5 Rebar

Flow

Grate

Flow overlap

Sewn 6" aggregate

Open graded depth over inlet

Aggregate, 12" min.

Wire mesh

Geotextile at 3' OC in pavement areas

Hold in place with sandbags to prevent sock movement.

3' OC, typ. Tie sock at overlap

2"x2"x36" wooden stakes areas sandbags at 3' OC in pavement movement. Hold in place with

Tie sock at overlap to prevent sock

2"x2"x36" wooden stakes 3' OC, typ.

from entering the catch basin.

as needed to prevent sediment laden water

Adjust, replace or modify the inlet protection site.

filter insert or wattle prior to leaving the wattle to force storm water to flow through side of opening tight against curb. Adjust

Install wattles over opening and 36" to each detail.

Install prefabricated filter insert per Type 3

Type 11 - Wattle barrier with filter insert are combined at a catch basin.

where at-grade inlet grate and curb inlet required for use with inlet filter insert mouth. Curb inlet sediment dam is

Fit curb inlet sediment dam snugly into inlet

Type 10 - Curb inlet sediment dam installations.

use synthetic mesh socks for temporary used safely.

or areas where the larger socks can be

Use 12" to 18" dia sock in non-traffic areas

(Type 7 cont.)

12" compost filter socks necessary for

Sandbags are not hold wattles in place.

Use sandbags to

Sandbags (typ.).

areas.

Use 8" to 12" dia sock on curbside in traffic recommendations (12"min., 36" max.).

Overlap ends of sock per manufacturers of the sock.

6" into ground and flush with the top

Drive 2"x2" wood stakes a minimum of

Type 7 - Compost filter sock

Field fabricated inserts are not allowed.

entering project storm systems.

prevent the potential of sediments accompanied by additional BMP's to overflow are allowed only when

Prefabricated inserts with provisions for manufacturer recommendations.

to the plans, special provisions, and

Install prefabricated filter inserts according

Type 3 - Prefabricated filter inserts

Install aggregate over the geotextile fabric.

structure.

wire mesh and perimeter area around

Place sediment fence geotextile over the

Place the wire mesh over the grate.

Type 2 - Geotextile/wire mesh/aggregate

NOTES:

harvest of the sod of inlets within 36 hours of

Install sod around the perimeter

NOTE:

01-2021 MOVED NOTES UP FROM OVERLAPPING THE SHEET BORDER

DATE REVISION DESCRIPTION

OREGON STANDARD DRAWINGS

DATE

SDR

BOOK NO.

CALC.

Professional Engineer.

first consulting a Registered and should not be used without sole responsibility of the user principles and practices, is the generally accepted engineering designed in accordance with

Standard Drawing, while

The selection and use of this

RD1030

TYPE 2, 3 AND 4

SEDIMENT BARRIER

20-JAN-2021N/A

A

PLAN

NOT TO SCALE NOT TO SCALE

A

F lo w sand bags

Biofilter or

F lo w

BARRIER SPACING

INSTALL PARALLEL ALONG CONTOURS AS FOLLOWS

ON SLOPE

SPACING

MAXIMUM

% SLOPE% SLOPE

10% Flatter

10 % 15

15 % 20

20 % 30

Steeper than 30%

1:10 or Flatter

10 X 7.5

7.5 X 5

5 X 3

Steeper than 1:3

300'

150'

100'

50'

25'

BIOFILTER BAG / SAND BAG BARRIER - TYPE 2 AND 4

SECTION A-A

Flow Pt. "A"

Pt. "B"

Countersink 3"

(Type 2 only)

2 stakes per bag

Slope

L

2"x2"x36" stakes

PLAN

SECTION A-A

FIBER ROLL BARRIER - TYPE 3

A A

12" overlap

Stagger joints Wattles

4' max.

Stake spacing

12" Overlap

Flow

Flow Flow

Countersink 3"

Flow

Slope

Pt. "B"

Pt. "A"

Barr ier s paci ng (s ee ta ble)

2"x2"x36" stakes

Type 4 - Sand bags

Type 3 - Wattles

Type 2 - Biofilter bags point "B".

elevation of point "A" is less than or equal to the elevation of

2. For Type 2 and Type 4 barriers, space bags (L) so that the placed on paved surface.

undisturbed ground a min. of 12". Omit stakes if bags are

1. For Type 2 barrier, drive stakes flush with top of bag and into

DATE REVISION DESCRIPTION

OREGON STANDARD DRAWINGS

DATE

SDR

BOOK NO.

CALC.

Professional Engineer.

first consulting a Registered and should not be used without sole responsibility of the user principles and practices, is the generally accepted engineering designed in accordance with

Standard Drawing, while

The selection and use of this

RD1040

SEDIMENT FENCE

20-JAN-2021N/A

J A

N aggregate (if specified)

3/4"-0" dense graded

Compacted native backfill or soil, or approved equal

3/4" min. rock, mineral

Bury 1' flap of fence with geotextile

Sediment fence

A

NOT TO SCALE NOT TO SCALE

NOT TO SCALE

min.

1'-0"

Post (downslope of geotextile)

Flow

Exposed soil fencing with sewn-in post sleeves.

2. Not approved for use with sediment

1. Use must be approved by the engineer.

NOTES:

WITHOUT TRENCHING - TYPE 2

ALTERNATE SEDIMENT FENCE

Sediment fence geotextile

SECTION A-A

Post (downslope of geotextile)

Flow

6" sewn in sleeves)

Geotextile (without

Exposed soil

AFRONT VIEW

SEDIMENT FENCE AND GEOTEXTILE BURY DETAIL - TYPE 1

Geotextile

PLAN VIEW TERMINATION AT CORNER OR PROPERTY LINE

is trapped fence to assure sediment

Angle ends of sediment

F lo w end connection or the post spacing overlap either the turned ends

Connect fence ends with

F lo w

Flo w

Flo w of slope break up length

Install wings to of two full wraps.

end posts a minimum fence by wrapping

Join two runs of

GEOTEXTILE WITH POST SLEEVES

sleeves upslope posts sleeves with fence with sewn in

Install sediment

Sleeve seam

F lo w

F lo w

TURNED ENDS CONNECTION POST SPACING OVERLAP CONNECTION

GEOTEXTILE END CONNECTIONS

F lo w

1 post spacing min.

G rade %

GRADE

POST SPACING TABLE

6'

4'

Sediment Fence with Geotextile elongation less than 50%

Sediment Fence with Geotextile elongation 50% or more

Grade 10%

10% Grade 15%

15% Grade 20%

20% Grade 30%

30% Grade

300'

150'

100'

50'

25'

ON GRADE

MAXIMUM SPACING

INSTALL PARALLEL ALONG CONTOURS AS FOLLOWS

GENERAL APPLICATION TABLE

FENCE SPACING FOR

Application Table" for General see "Fence Spacing

Spacing on grade, Spacing for General Application Table".

5. Wing spacing shall comply with "Fence to the toe of a slope.

4. Locate fence no closer than three feet and soil on uphill side of fence.

3. Compact filter fabric trench backfill from geotextile.

Position posts to prevent separation side of sediment fence geotextile.

2. Posts to be installed on downhill

1. Use 2"x2" wood fence posts.

GENERAL NOTES:

DATE REVISION DESCRIPTION

OREGON STANDARD DRAWINGS

DATE

SDR

BOOK NO.

CALC.

Professional Engineer.

first consulting a Registered and should not be used without sole responsibility of the user principles and practices, is the generally accepted engineering designed in accordance with

Standard Drawing, while

The selection and use of this

RD1055

MATTING

SLOPE AND CHANNEL

20-JAN-2021N/A

matting

Channel liner

NOT TO SCALE

NOT TO SCALE

NOT TO SCALE

NOT TO SCALE

H>3' AND TERMINAL SLOPE

TOP OF BANK ANCHOR TRENCH,

FIGURE A1:

ANCHOR TRENCH, H<3'

TOP OF BANK

FIGURE A2:

NOT TO SCALE

CHANNEL CHECK SLOT

FIGURE A3:

NOT TO SCALE

6"

NOT TO SCALE

ROCK BACKFILL

CHANNEL CHECK SLOT WITH

FIGURE A4:

NOT TO SCALE

ANCHOR TRENCH

INITIAL CHANNEL

FIGURE A5:

STAPLES

SLOPE MATTING ISOMETRIC VIEW

CHANNEL MATTING ISOMETRIC VIEW

Terminal slope

See Figure A5

A1 or A2)

(See figure anchor trench

Top of bank to bottom of channel

H=Height, top of bank staggered spacing, Stake at 24" Beginning edge, 12" OC or Figure A2

See Figure A1

6" min.

overlap overlap

6" min.

slope

Toe of matting

Slope o v e rl a p m in

1" 1/2"

12"

4'

Swale

Compacted soil

Bank with soil and compact

Fill anchor trench Compacted soil Compacted soil

14" riprap

Class 50

Compacted

6" m in m in ballast

Aggregate

H

(see Figure A3 or Figure A4)

Check slot at 25' intervals, accepted.

or photodegradable components will not be biodegradable product. Matting with plastic

8. Matting Types A through E: Furnish fully mat back under 4" and fasten.

Extend mat 24" beyond toe of slope; fold7.

at 24" OC

Stagger alternate rows of fasteners placed6.

Overlap upper mat over lower mat, and fasten.5.

Place fastener at 12" OC on matting edges4.

away from prevailing winds.

Install matting so edge overlaps are shingled3.

Install matting vertically down slope.2.

seeding is applied (where applicable).

1. Install matting on smooth soil surface after

NOTES:

accepted.

Matting with plastic or photodegradable components will not be

9. Matting Types A through E: Furnish fully biodegradable product.

and terminal slope anchor at upstream end.

Construct initial anchor trench at downstream end of matting8.

Fasten matting interior at 24" OC with staggered spacing.7.

fasten 12" OC (Fig. A2).

Anchor top edge of side channel matting in trench and6.

downstream matting. Fasten 12" OC

Lap upstream matting end 12" over beginning edge of5.

liner mat.

overlap and stapling pattern for each additional side channel channel liner matting and fasten edges 12" OC Continue

Overlap side channel liner matting edges 6" over the center4.

and at the end of each mat (Fig. A3 or A4).

Construct check slots across channel bottom at 25' spacing3.

pipe outlet.

outfalls, place mat under pipe 12" minimum upstream from

Anchor upstream end of mat with check slot for culvert

Install channel liner matting, in the direction of water flow.2.

(where applicable).

1. Install matting on smooth soil surface after seeding is applied

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