109-GUIDE_SHEET_-_Basic_Ramp.pdf
PDF 362 KB Posted
- Solicitation number
- CWB014279
- Issued by
- Fairfield County, Bridgeport City, Connecticut
About this file
This is a technical guide sheet issued by the Connecticut Department of Transportation establishing design standards for concrete sidewalk ramps and ADA-compliant curb ramps. The document provides detailed specifications for ramp construction, including maximum slope requirements (8.33 percent for running slope, 2.0 percent maximum for cross slope), minimum dimensions for turning spaces and detectable warning surfaces (48 inches minimum), and construction details such as concrete thickness, broom finish requirements, and transition specifications. The guide sheet incorporates the Public Right-of-Way Accessibility Guidelines (PROWAG) Draft 2013 and notes that updated compliance with the PROWAG Final Rule will be implemented once officially adopted into law. The specifications address various roadway conditions, including cross slopes of 5 percent or less and greater than 5 percent, with corresponding ramp configurations and grade break placements. The document was last updated on October 30, 2024, and applies to various towns throughout Connecticut.
The guide sheet serves as a design standard reference for municipalities and contractors undertaking sidewalk and ramp improvement projects, including the City of Bridgeport's Citywide Sidewalk, Curb, Apron & ADA Ramp Repair and Replacement initiative. Key construction requirements include vertical surface discontinuities not exceeding 1/4 inch at joints, water drainage provisions to prevent accumulation within pedestrian access routes, and detectable warning surface installation extending 2 feet minimum in the direction of pedestrian travel. The document provides detailed cross-sectional drawings and notes addressing specific conditions such as depressed curbs, sloped curbing configurations, and ramp warping details behind detectable warning surfaces. All specifications are designed to ensure accessibility compliance and accommodate pedestrians with mobility limitations.
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Text version
5% OR LESS
ROADWAY CROSS SLOPE
EDGE OF ROAD
SIDEWALK RAMP 8.33% MAX.
GREATER THAN 5%
ROADWAY CROSS SLOPE
SIDEWALK RAMP 8.33% MAX.
MAX.
1.5%
GUTTER COUNTER SLOPE
ROADWAY CROSS SLOPE OF 5% OR LESS
SIDEWALK RAMP GRADE AT
GUTTER COUNTER SLOPE
ROADWAY CROSS SLOPE OF GREATER THAN 5%
SIDEWALK RAMP GRADE AT
8.33% MAX.
7.1% TYP.
RAMP SLOPE
WITH RAMP (TYP.)
SLOPED CURBING INCLUDED
RAMP LENGTH
8.33% MAX.
7.1% TYP.
RAMP SLOPE
(48" MIN.)
CURBING
ROADWAY
24"
0" - 1/4" MAX.
LIP HEIGHT
0" - 1/4" MAX.
LIP HEIGHT
MAX.
10%
WITH SIDEWALK RAMP
DEPRESSED CURB INCLUDED
RO
ADW
AY PRO
FILE SLO
PE
MATCH ROADWAY PROFILE SLOPE
4" 7"
EDGE OF ROAD
GENERAL NOTES:
2.0% MAX.
1.5% TYP.
2% MAX.
8" GRANULAR FILL
5" CONCRETE
RAMP WARPING DETAIL
BEHIND THE DETECTABLE WARNING SURFACE.
2. COMPLETE TRANSITION TO THE ROADWAY PROFILE
ROADWAY PROFILE.
RATE OF CHANGE WHEN TRANSITIONING TO
DO NOT EXCEED 3 % PER FOOT CROSS SLOPE
ROADWAY PROFILE AS GRADUALLY AS POSSIBLE.
1. TRANSITION SIDEWALK RAMP TO MATCH
THE BACK OF THE CURB
ARE GREATER THAN 5' FROM
BOTTOM GRADE BREAK
ONE OR BOTH ENDS OF THE
GRADE BREAK
CURBING
GRADE BREAK
CURBING
FROM THE BACK OF THE CURB
GRADE BREAK ARE 5' OR LESS
BOTH ENDS OF THE BOTTOM
48" MIN.
48" MIN.
48" MIN.
DETECTABLE WARNING SURFACE LOCATION
GRADE BREAK GREATER THAN 5'
DETECTABLE WARNING SURFACE LOCATION
GRADE BREAK OF 5' OR LESS
8.33% MAX.
7.1% TYP.
RAMP SLOPE
48" MIN.
8.33% MAX.
7.1% TYP.
RAMP SLOPE
2% MIN., 5% MAX.
RUNNING SLOPE,
CROSS SLOPE
MATCH RAMP
2% MIN., 5% MAX.
RUNNING SLOPE,
SECTION A
A
AND SECTION
PERPENDICULAR SIDEWALK RAMP
2.0% MAX.
1.5% TYP.
TURNING SPACE
TURNING SPACE
2.0% MAX.
1.5% TYP.
TURNING SPACE
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
48" MIN.
2.0% MAX.
1.5% TYP.
TURNING SPACE
48" MIN.
(SEE NOTE 6)
WARNING SURFACEDETECTABLE
(SEE NOTE 6)
WARNING SURFACEDETECTABLE
WARNING SURFACEDETECTABLE
48" MIN.
MAX.
10%
WARNING SURFACEDETECTABLE
MATCH RAMP
CROSS SLOPE
PEDESTRIAN ACCESS ROUTE.
9. CURB RAMPS SHALL BE CONSTRUCTED SO THAT WATER WILL NOT ACCUMLATE WITHIN THE
SEE ENGINEERING DIRECTIVE ED-2019-7.
8. CTDOT DESIGN STANDARD USE THE PUBLIC RIGHT-OF-WAY ACCESSIBILITY GUIDELINES (PROWAG)
WILL BE MADE TO COMPLY WITH PROWAG FINAL RULE ONCE OFFICIALLY THE LAW.
7. ALL GUIDESHEET VALUES COMPLY WITH PROWAG DRAFT 2013 GUIDELINES. UPDATED VALUES
TRAVEL AND SPAN THE ENTIRE RAMP OPENING.
6. DETECTABLE WARNING SURFACES SHALL EXTEND 2 FEET MIN. IN THE DIRECTION OF PEDESTRIAN
OR HIGHWAYS.
STREET CROSSINGS, PEDESTRIAN REFUGE ISLANDS AND RAILROAD CROSSINGS ALONG STREETS
5. DETECTABLE WARNING SURFACES SHALL BE INSTALLED ON SIDEWALK RAMPS AT PEDESTRIAN
REQUIRE THE RAMP LENGTH TO EXCEED 15 FEET.
4. THE RUNNING SLOPE OF THE CURB RAMP SHALL BE 8.33 PERCENT MAXIMUM BUT SHALL NOT
EXPANSION OR CONTRACTION JOINT.
3. REMOVAL OF EXISTING SIDEWALK FOR NEW RAMP INSTALLATIONS SHALL BE TO THE NEAREST
INCH."4
2. VERTICAL SURFACE DISCONTINUITIES AT JOINTS SHALL NOT EXCEED
1. SIDEWALK RAMPS SHALL HAVE A COARSE BROOM FINISH TRANSVERSE TO THE SLOPE OF THE RAMP.
PROJECT TITLE: PROJECT NO.: DRAWING NO.:
SHEET NO.:
10/30/2024
SIGNATURE BLOCK: DRAWING TITLE:
TOWN(S):
VARIOUSTEST PROJECT
PLOTTED DATE:
C:\Users\KIlpatrickdj\State of Connecticut\DOT Engineering Services - Documents\HWY_STD_GUIDE_DWG\B - Going for signatures\Jan 2025 Stnd & Guide Shts\CTDOT_HIGHWAY_GD Jan 2025 [10-30-24].dgn FILE NAME: kilpatrickdj LASTED SAVED BY:
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DESIGNER/DRAFTER: CHECKED BY:
SHEET 1 OF 11
CONCRETE SIDEWALK RAMPS
TRANSPORTATION
DEPARTMENT OF
CONNECTICUT
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