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 | ||
| 900451 Instructions to Bidders~1.pdf | ||
| 900451 Bid Forms.pdf | ||
| 900451 contract and bonds.pdf |
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Text version
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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