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STREETSCAPE TRANSIT 4-6 TRAVEL LANES TRANSIT STREETSCAPE
Figure 4-1
Regional Connector
September 2005
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STREETSCAPE STREETSCAPETRANSIT OR PARKING
2-4 TRAVEL LANES TRANSIT OR PARKING
Figure 4-2
Commercial Connector
September 2005
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STREETSCAPE BIKE 2-3 TRAVEL LANES BIKE STREETSCAPE ORTRANSIT
ORTRANSIT
Figure 4-3
Local Connector
September 2005
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STREETSCAPE PARKING BIKE 2-3 TRAVEL LANES BIKE PARKING STREETSCAPE
Figure 4-5
Mixed Use Street
September 2005
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STREETSCAPE 1-3 TRAVEL LANES STREETSCAPE
Figure 4-6
Industrial Access
September 2005
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STREETSCAPE 1-3 TRAVEL LANES STREETSCAPE
Figure 4-7
Green Street
September 2005
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STREETSCAPE PARKING 1-2 SHARED TRAVEL LANES
STREETSCAPE
Figure 4-8
Neighborhood Green Street without Curb
September 2005
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STREETSCAPE PARKING 1-2 TRAVEL LANES STREETSCAPE
Figure 4-9
Neighborhood Green Street with Curb
September 2005
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RIGHT-OF-WAY LINE
RIGHT-OF-WAYLINE
CATCH LINE
SLOPELINE
SLOPELINE
SIDEWALK PLANTING STRIP ROADWAY PLANTING STRIP SIDEWALK
STREET RIGHT-OF-WAY
2.0% 2.0% 2.0%
STREET TREE
6” CURB
GUTTER
PAVEMENT CROWN
STREET TREE
6” CURB
GUTTER
EXISTING GRADE
1
MAX 2
1
2 MAX2.0%
NEW GRADE
3.5’ MIN SETBACK
Figure 4-10
Standard Design Cross Section
September 2005
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CURB
LANE LINE
NO PARKING NO PARKING
PARKING
RIGHT-OF-WAY-LINE
R=20’ R=20’
12’
8’
20’
10’ MIN. CURB
Figure 4-14
Parking Curb Setback
September 2005
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EXISTING GROUND
ASPHALTCONCRETE OVERCRUSHED ROCK
COMPACTEDSUBGRADE PERSTD. SPEC 2-06
RIGHT-OF-WAY
1
MAX 22.0% 2.0% 2.0%
RIGHT-OF-WAY LINE
RIGHT-OF-WAY LINE
EXISTING ROADWAY
SHOULDER
LESS THAN10’ WIDE
5’
MIN
Figure 4-15
Asphalt Pedestrian Walkway
September 2005
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WIDTH PERBUILDINGGRADE SHEET 5’ 10’
2.0% 2.0% 2.0%
EXISTINGGROUND
ASPHALTCONCRETE OVERCRUSHED ROCK
COMPACTEDSUBGRADE PERSTD. SPEC. 2-06
MIN MIN
ABUTTING DEVELOPMENT
RIGHT-OF-WAY LINE
RIGHT-OF-WAY LINE
EXISTING ROADWAY
RIGHT-OF-WAY
Figure 4-16
Asphalt Pedestrian Walkway 10 Feet or More From Existing Roadway
September 2005
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Figure 4-17
Pavement Markings for Loop Detector Systems
September 2005
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L
PIER, ABUTTMENT, GRATE OR OTHER OBSTRUCTION
150 MM (6IN) SOLID WHITE MARKING
DIRECTION OF BICYCLE TRAVEL
FOR METRIC UNITS:L=0.62 WV, WHERE V IS BICYCLE APPROACH SPEED (KM/H)
FOR ENGLISH UNITS:L: WV, WHERE V IS BICYCLE APPROACH SPEED (MPH)
WW
Figure 4-20
Obstruction Warning Pavement Marking
September 2005
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September 2005Figure 4-21
Pedestrian Lighting Sections
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PROP WATER(NORTH OF CENTERLINE)
PROP WATER(EAST OF CENTERLINE)
VALVE LOCATION PERPENDICULAR OF CITY RIGHT-OF-WAY (ROW) BOUNDRY (TYPICAL)
ALIGN W/ ROW (TYP)
ALIGN W/ ROW (TYP)
CITY RIGHT-OF-WAY (ROW) BOUNDARY
ALIG
N W
/ RO
W (TY
P)
ALIG
N W
/ RO
W (TY
P)
Figure 4-22
Typical Valve Location
September 2005
N
S
EW
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=MINIMUM SETBACK OF FINISHED BUILDING
OR STRUCTURE REQUIRED FOR UTILITY
CLEARANCE FROM SCL ELECTRICAL
OVERHEAD UTILITY.
TYPICAL SCL CONSTRUCTION
THE SEATTLE CITY LIGHT (SCL) 26KV OVERHEAD POWER
DISTRIBUTION REQUIRES A MINIMUM HORIZONTAL AND
VERTICAL CLEARANCE FROM BUILDINGS AND
STRUCTURES PER THE MOST RESTRICTIVE ELEMENTS
AMONGST CURRENT WASHINGTON ADMINISTRATIVE
CODE (WAC 296-155-428, WAC 296-24-960), NATIONAL
ELECTRIC SAFETY CODE (NESC-2002, RULES 236/237),
AND SCL CONSTRUCTION GUIDELINE (D2-3).
POLE LOCATION WITHIN STREET RIGHT-OF-WAY MUST
HAVE SDOT APPROVAL.
NOTE: ALL STRUCTURES, CONSTRUCTION AND MAINTENANCE ACTIVITIES PROHIBITED IN
THIS AREA. CLEARANCES MAY BE REQUIRED IF POLES AND WIRES ARE NOT PRESENT.
ADDITIONAL CLEARANCES ARE REQUIRED FOR BUILDING MAINTENANCE ACTIVITY.
EXAMPLE: POLE SET 7’ MINIMUM TO PROPERTY LINE
22’
10’+CLEARENCE
28’
(TYPICAL)
CW
7’
MINIMUM7’
PR
OP
ER
TY
LIN
E
PRIMARY ELECTRICAL DISTRIBUTION
TRANSFORMERS
PRIMARY NEUTRAL AND SECONDARY
ELECTRICAL DISTRIBUTION
STREETLIGHT
COMMUNICATIONS
43’
(TYPICAL)
Figure 4-23
Seattle City Light Utility Clearance
September 2005
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0
2
4
6
8
10
12
14
16
2 4 6 8 10 12 14 16 18 20 22 24
21
NO RAIL REQUIRED
HORIZONTAL DISTANCE FROM BACK OF SIDEWALK TO EDGE OF WALL OR TOP OF SLOPE (FEET)
HE
IGH
T O
F D
RO
P
(FE
ET)
RAILINGS SHALL BE DESIGNATED AS “HANDRAILS” OR “PEDESTRIAN RAILS” AND THEIR USAGE SHALL BE AS DETERMINED BY THE DIAGRAM. HANDRAILS SHALL BE DESIGNED IN ACCORDANCE WITH SEATTLE STANDARD PLAN 441 OR 443, AS APPROPRIATE. PEDESTRIAN RAILINGS SHALL BE DESIGNED IN ACCORDANCE WITH INSTRUCTIONS PROVIDED BY THE ENGINEERING SERVICES DIVISION OF THE ENGINEERING DEPARTMENT OR RULES DEVELOPED FOR THIS PURPOSE BY THE DIRECTOR OF ENGINEERING.
Figure 4-24
LEGEND
Determination of Handrails vs. Pedestrian Rails
Railing requirements to be determined by SDOT
Handrail or other barrier device as approved by SDOT
Pedestrian rail
September 2005
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’ 06
NO PARKINGSIGNS REQUIRED
MAX. 8% SLOPE
MAX. 8% SLOPE
CURB/PAV. LINE
CURB/PAV. LINE
18’
’23
’23RIGHT-OF- WAY LINE
RIGHT-OF-WAY LINE
’22=
R ’22=R
WITHIN EXISTING 60’ RIGHT-OF-WAY
NEW PLATTED STREET
’53=R
’05=R
’05=R
September 2005Figure 4-25
Cul de Sacs
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3’ 35’
33’ 22’ 40’ 10’
2’2’ 18’
’4
’1’2
’81
’81’1
’1
’3’3
’06 ’A’A
’A
’A
’ 12’53
FENCE SETBACK LINENO VERTICAL OBSTRUCTIONSHIGHER THAN 6’ IN THIS ZONE
PAVEMENT
RIGHTOF WAY
’02=R
’02=R
’02=
R
’02=
R
A = PER ALLEY OR EASEMENT WIDTH STANDARDS
RIGHT-OF-WAY
PAVEMENT
2’20’
September 2005Figure 4-26
Alley and Easement Turnarounds
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GENERAL REQUIREMENTS:
Use the latest updates of the Manual on Uniform Traffic Control Devices (MUTCD). Use terminology specified in the SDOT Standard Specifications for Road, Bridge, and Municipal Construction and the City-County Design standards. Use plan scale of 1 inch = 50 feet′. Show entire roadway width with all elements listed below. On city streets, where the proposed channelization matches the existing street sections, show no less than 200 feet of the existing street section beyond the match line(s) with all elements listed below. On intersecting roads and commerciaand multi-residential driveways, show no less than 100′ of the existing section beyond the match line(s) with all elements listed below. Show both the existing channelization on the base layer of the plan and the proposed channelization in bold with call outs consistent with the City of Seattle Standard Specifications (Section 8-22). Include dimensions of all channelization features where proposed improvement ties in with existing roadway, including any necessary transitions, even if they are proposed to be on a different side of an intersection. Provide an electronic copy of the CAD drawing, in *.dwg format, one full size (22 inch x 34 inch) and two half size (11 inch x 17 inch) white paper copies of the channelization plan(s). Full size mylar is required for final approval. Submit signing and channelization related design deviation(s) and/or evaluate upgrades (EU) requests for review and approval. Signing and Channelization Plan cannot be approved until these deviations and/or EU’s are approved.
REQUIRED ELEMENTS TO BE INCLUDED ON A SIGNING AND CHANNELIZATION PLAN:
Project Title with a north arrow the date and page number in the title block. Street and highway names. Right of way lines (City, County, and/or WSDOT). Posted speed, design speed, and design vehicle. NOTE: The minimum design vehicle is a single unit truck (SU-30), but the design vehicle will be determined by SDOT. Street classification. Edge of traveled way and edge of pavement lines. Intersecting streets, alleys and driveways - at least 100′ and identify business name. Widths of through lanes, turn lanes, and shoulders. Lengths of right and left turn storage lanes (Indicate recommended storage lengths in Traffic Analysis) Lengths of all channelization tapers and stripes (with callouts as per COS Standard Specification 8-22). Curb radii for all corners at intersections, and commercial and multi-residential driveways. Typical roadway sections showing all channelization features with dimensions (i.e. travel lanes, turn lanes, medians, shoulders, curb and gutter, bike lane, sidewalk etc.). Existing and proposed raised curbing Raised and painted islands. Separate sketch showing detail of islands including offsets of key locations from reference lines. Also indicate square footage of islands. All existing and proposed signage within the project area. Signature block for SDOT approval. P.E. stamp / seal signed and dated.
Figure 4-28
Channelization Check List
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