18. 04-0X250 Broadway Streetscape_Final_addendum 3.pdf
PDF 294 KB Posted
- Solicitation number
- 426554
- Issued by
- Alameda County, California
About this file
This is an Addendum 3 to construction detail plans for the Broadway Streetscape Project prepared by the City of Oakland Department of Transportation in collaboration with Parsons, the engineering consultant. The addendum, dated April 22, 2026, revises Sheet 27 of the construction documents and specifies detailed construction specifications for streetscape improvements including permeable porous pavement systems, curb and gutter installations, tree planting details, and hardscape materials. The plans detail material specifications such as 4-inch Class 2 aggregate base rock with 50% drain rock, flexible porous pavement surfacing, "California Gold" colored irregular surface rock with 6-9 inch nominal diameter in a dark gunship gray finish, and various concrete finishing details. Tree planting specifications are included for species including Quercus tomentella, Quercus fusiformis, Pistacia 'Red Push', and Lophostemon confertus, with detailed notes regarding soil preparation, root barriers, weed barrier fabric, and planting depths relative to sidewalk and curb elevation.
The document serves as technical guidance for contractors executing the Broadway Streetscape construction project, establishing standardized construction methodologies and material quality standards for the streetscape improvements. The plans were designed by Kurt Schmidt and Jeff Sparks, registered professional civil engineers in California, with the most recent revision dated February 7, 2025. This addendum replaces previous specifications on Sheet 27 and reflects the final design intent for streetscape construction details including transition details between different curb and gutter types, permeable base preparation, and integrated tree planting systems designed to manage stormwater while enhancing the pedestrian environment along Broadway.
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Other files
| File | Type | Posted |
|---|---|---|
| 15. 1006953 Addendum 2 Extension.pdf | ||
| 17. 1006953-Broadway Streetscape_Plans_Addendum 3.pdf | ||
| 16. 1006953 Addendum 3.pdf |
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Text version
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USERNAME => p009550H
DGN FILE => 0400000326ga014.dgn
RELATIVE BORDER SCALE
IS IN INCHES
0 1 2 3
UNIT PROJECT NUMBER & PHASEBORDER LAST REVISED 8/1/2016 0424000081
OAKLAND, CA 94607
555 12TH ST, STE 2130
PARSONS
OAKLAND, CA 94612
PLAZA, STE 4314
250 FRANK H. OGAWA
CITY OF OAKLAND
31.6/31.6 K
U R
T I
C
H M I
D T
J E
A R
K S
JEFF SPARKS
No.
Exp.
CIVIL
R E
G I
S T
E R
E
D P
ROFESSIONA
L
E N
G I
N E
E R
S
T A
TE
OF CALIF
ORN
IA
REGISTERED CIVIL ENGINEER
PLANS APPROVAL DATE
DATE
COPIES OF THIS PLAN SHEET.
THE ACCURACY OR COMPLETENESS OF SCANNED
OR AGENTS SHALL NOT BE RESPONSIBLE FOR
THE STATE OF CALIFORNIA OR ITS OFFICERS
C83506
3-31-27
2/07/25
2/07/25
CONSTRUCTION DETAILS
MORTAR
70% IN CONCRETE
EMBED ROCK 50% TO
DRAIN MIN 5%
SLOPE TO
ROCK SURFACING
BETWEEN ROCK AND SUBASE
2" Min CONCRETE BASE
ROCK SURFACING
NO SCALE
Misc DETAILS
4" Cl 2 AB
"CALIFORNIA GOLD" COLOR
IRREGULAR SURFACE LIGHT
DIAMETER. SMOOTH
ROCK 6"-9" NOMINAL
FINISH TEXTURE COLOR
(DARK GUNSHIP GRAY)
FEDERAL STD AMS-STD 595 36081
RAISED ISLANDS
FILTER FABRIC
EDGE
SQUARE
FLEXIBLE POROUS PAVEMENT
FLEXIBLE POROUS PAVEMENT
VARIES
SEE NOTE 1
NOTE:
SIDEWALK
SEE LANDSCAPE PLANS
X, Typ
9" QUERCUS TOMENTELLA
9" QUERCUS FUSIFORMIS
6" PISTACIA 'RED PUSH'
6" LOPHOSTEMON CONFERTUS
X SHALL BE AS FOLLOWS PER TREE SPECIES:
SIDEWALK/CURB/GUTTER
LOCATION
CURB (TYPE A2-6)
CURB AND GUTTER
CL2 AB
C-14
MINOR CONCRETE (TEXTURED PAVING) FINISH SCHEDULE
PERMEABLE BASE
ASPHALT TREATED
SURFACES.
BETWEEN EXPOSED ROCK
1 1/4" Max SEPARATION
ADJACENT ROCK SURFACES
BETWEEN THE TOP OF
2" TO 6" SEPARATION
MEDIUM BROOM
5' T ra ns
C&G (TYPE A2-6)
C&G (TYPE C)
CITY OF OAKLAND
TRANSITION DETAIL
C&G (TYPE A2-6) TO C&G (TYPE C)
ROOT BARRIER
GRAVEL SUBBASE
COMPACTED PERMEABLE
ALIGN
IMPORTED TOPSOIL
SITE SOIL OR
ROOT BALL
BACKFILL
SIDEWALK OR CURB
FLEXIBLE POROUS PAVEMENT
FLEXIBILE POROUS PAVEMENT
TREE CROWN 1" ABOVE TOP OF
WEED BARRIER FABRIC
OR TO CURB/SIDEWALK
2X BALL, MIN.
TYP.
POROUS PAVEMENT SYSTEM,
WHERE WITHIN FLEXIBLE
WITH WEED BARRIER FABRIC
TREE STAKE. WRAP STAKE
ALIGN
STRAIGHT EDGE
FLEXIBLE POROUS PAVEMENT
TREE PLANTING AT
SHEET REPLACED BY ADDENDUM 3 - 4/22/26
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