DISTRICT 6-0 ADA Design Guidance

344 Pages·2012·24.02 MB·English

by  Carlos Garcia

ADA

REFERENCE
GUIDE
JunOec2t0o,b2e0r1 72010
Revision
DISTRICT 6-0
DISTRICT 6-0
ADA Design Guidance
FOREWORD
The Pennsylvania Department of Transportation, Engineering District 6-
0 has produced this document to serve as a design tool to provide
guidance to contractors, engineers and all those involved with the
design and construction of Americans with Disabilities (ADA) compliant
curb ramps. It is our intent to present this guidance so that you have
the tools needed to expedite ramp design approval. We have worked
with many partners in the development of this document including the
City of Philadelphia, PENNDOT Central Office, and representatives
from the design consultant community to include the most current level
of knowledge and practical experience. This is not to be taken as
official Department “policy” but, rather it is to be used as a guide that
reflects District 6-0’s expectations and internal practices so that designs
can be approved to ensure contractor project needs are met. Official
Policy comes only from PENNDOT’s Central Office. However, it is our
expectation that designers, contractors, inspectors and all shareholders
will follow the procedures and information presented in this booklet
when performing work in District 6-0. This Document does not
supersede nor in any way invalidate any ADA standards, policies or
laws that are applicable on both the State and Federal levels. It is our
goal that this document will help all stakeholders with this very
challenging issue by improving overall understanding of the ADA
design-reviewprocess.
June 20, 2017
District 6‐0 
ADA DISTRICT 6‐0 REFERENCE GUIDE  

TABLE OF CONTENTS 

SECTION I  GENERAL SPECIFICATIONS
SECTION II  SUBMISSION REQUIREMENTS
SECTION III  SUBMISSION AND REVIEWING PROCESS 
SECTION IV  ADA DISTRICT 6‐0 SPECIFIC GUIDANCE
SECTION V  PROJECT SCOPE EVALUATION AND DETERMINATION 
SECTION VI  LIAISON WITH LOCAL GOVERNMENT AND PRIVATE 
PROPERTY OWNERS (SEE PUBLICATION 13M (DESIGN 
MANUAL PART 2), CHAPTER 6, SECTION 6.4)  
SECTION VII  CONTACTS 
SECTION VIII  GENERAL INDEX
APPENDIX A  SAMPLE DESIGN SHEETS
APPENDIX B  DISTRICT 6‐0 CS‐4401 INSPECTION/DESIGN FORM & 
TECHNICAL INFEASIBLE FORM (TIF) 
APPENDIX C  PEDESTRIAN STUDY
APPENDIX D  PROPERTY OWNER COORDINATION
APPENDIX E  SAMPLE COMMENTS
APPENDIX F  LESSONS LEARNED
APPENDIX G  CITY OF PHILADELPHIA (Submission Requirements, Sample Documents & 
City Standards & Guidelines) 
APPENDIX H  SCOPING RESOURCES FORUNCONTROLLED CROSSINGS
District 6‐0 
ADDITIONAL REFERENCE MATERIALS 

APPENDIX R‐1  DM‐2 – CHAPTER 6 –PEDESTRIAN FACILITIES
APPENDIX R‐2  DM‐2 – CHAPTER 7 –DRIVEWAYS
APPENDIX R‐3  RC‐67M CURB RAMP & SIDEWALK DETAILS
APPENDIX R‐4  TC‐8803 – PEDESTRIAN PUSHBUTTONS
APPENDIX R‐5  PENNDOT DISTRICT 6 PAVEMENT MARKING STANDARD
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I- GENERAL SPECIFICATIONS

A design drawing must be prepared and submitted for the proposed curb ramp(s)
in accordance with the latest revisions of Publication 72, Standard Drawings RC-
67M, the Department’s Publication 13M (Design Manual Part 2), Chapter 6,
Chapter 7 and/or specific project details for review and approval.

Design Specifications:

Use Pennsylvania Department of Transportation (PennDOT) Publication 13M
(Design Manual Part 2), Chapter 6 for design policy and procedures. Use the
following applicable documents for additional information:

 All active Strike-off-Letters (SOL’s)
 PennDOT Publication 13M (Design Manual Part 2), Chapter 6 and
Chapter 7
 Standard Drawings RC-67M
 PennDOT Publication 72M, Roadway Construction Standards
 Publication 408, PennDOT Specifications
 Publication 148, Traffic Signal Construction Standards TC-8800 (latest
Edition).
 Publication 149, Traffic Signal Design Handbook (Chapter 19)
 Publication 46, Traffic Engineering Manual
 Publication 111M, Traffic Control Pavement Markings and Signing
Standards – TC 8600 & 8700
 PennDOT District 6-0 Standard Pavement Markings
 Pennsylvania’s Traffic Calming Handbook (Pub 383)
 U.S. Department of Transportation, Federal Highway Administration
(FHWA), “Manual on Uniform Traffic Control Devices” (MUTCD)
 Code of Federal Regulations, 2010 ADA Standards
 U.S. Access Board, “Draft Public Rights-of-Way Accessibility Guidelines”
(PROWAG)
 Special Report: Accessible Public Rights-Of-Way (PROWAAC, July 2007)
 U.S. Department of Transportation, FHWA, “Designing Sidewalks and
Trails for Access, Part II of II, Best Practices Design Guide
 U.S. Department of Transportation, FHWA, Designing Sidewalks and
Trails for Access, 2001
(http://www.fhwa.dot.gov/environment/sidewalk2/index.htm)

June 20, 2017 -1- ADA CURB RAMP GUIDANCE
II- SUBMISSION REQUIREMENTS

1- Fully complete all four (4) sheets of the District 6-0 (D6) design CS-4401 form
(as applicable, as per electronic directions of the form) to show the design
parameters for each proposed curb ramp. The forms must note the location
where the ramps are proposed to be installed and include photos of the
existing facility conditions. Additional comments explaining the parameters of
the design can be attached as needed.

Submit three (3) color hard copies of the design CS-4401 forms with the
design drawing details for review and approval. Please note, for projects in the
City of Philadelphia, four (4) color copies of the designs CS-4401 forms and
design drawing details must be submitted; two (2) copies to the City (one hard
copy and one on CD) and two (2) hard copies to the District for review and
approval.

In addition to submitting hard copies of the forms and plans to the District,
upload the forms and plans using PennDOT’s Project Collaboration Center
(PPCC) website. Coordinate with the Resident Engineer (RE) and/or Project
Manager (PM) for this process. The comment letters will be transmitted using
both email and this PPCC website.

In addition, the following information must be included to clarify the scope and
layout of the intersection in order to expedite the review process:

o Project Type Identification
o Project Description
o Scope of Work
o Pedestrian Studies (As applicable)
o Property Owner Coordination Correspondence (As applicable)
o Pavement Marking Plans (Existing and proposed as applicable)
o Traffic Signal Permit Plans*

*Please note that existing traffic signal permit plans must be updated due
to the installation of curb ramps. Provide a copy of the existing Approved
Permit Plan as well as an updated Permit Plan showing revisions resulting
from the ramp construction. This coordination must be completed both
prior to ramp construction and during the as-built process of the ramps. All
comments from the Signals Unit must be addressed for the final approval
of the signal permit plans.

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To obtain a copy of existing signal permits plans, please contact the County
Signals Supervisor’s as follow:

 Bucks County
Nipul Patel, P.E. ([email protected])
 Chester County and Delaware Counties,
Paul Lutz ([email protected])
 Montgomery County
Dave Adams, P.E. ([email protected])
 Philadelphia County, Traffic Division,
Philadelphia Streets Department
Kasim Ali, P.E. ([email protected])

Once the design and the forms are deemed acceptable, the electronic Excel
version of the forms and PDF copies of the plans must be submitted for the
District’s records. Additionally, only the excel version of the forms and PDF
versions of the plans must also be uploaded as a new submission in the PPCC
website. This submission will also be reviewed and compared to the hard copy
approval (field copy) of the package prior to acceptance in PPCC.

2- The submission must include a transmittal letter & summary sheet in each
book, clearly indicating the names of the Contractor, the Designer and the
District’s Resident Engineer. All submission transmittals must be directed to
the ADE of Construction (transmittal letter only) and carbon copies distributed
to the District’s Resident Engineer (transmittal letter only), and ADA
Coordinator (Transmittal letter plus pertinent design documents). Include the
email addresses for the designer and project manager on the transmittals.

3- Detail drawings for each intersection must be included with the submission.
The detail drawings must include the following three sheets:

i. A sheet showing the overall intersection geometry information such as
intersection layout, curb ramp alignment, pedestrian crosswalks, utilities,
right-of-way lines, pavement edge and type, existing features (buildings,
entryways, steps, walls, trees, shrubs/hedges, etc.) and traffic control
devices (traffic signal poles, equipment, stop signs, etc.). (Please note that
intersection sight distances and the pedestrian traffic signal head cone
vision must be taken into consideration when designing ADA curb ramps).
ii. A sheet showing all pertinent spot elevations.
iii. A sheet showing the Curb Ramp Details.

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4- The design details must conform to the following requirements:

a. Draw details at a minimum scale of 1.0 inch per 10.0 feet on 11” x
17” sheets of paper. If possible, each detail sheet should depict an
entire intersection with all applicable ramps and enough detail to
illustrate any impediments to providing ramps fully compliant with
RC-67M. The design and drawings must be prepared using English
units. All drawing details must be legible.
b. Provide a NORTH arrow on the drawings.
c. Include a title block in the lower right hand corner containing the
Project name and log No., ECMS number, HOP application
number, date of submittal, a block for date of resubmittal(s), the
name of the designer and firm along with the appropriate sheet
number(s).
d. Identify the type of curb ramp proposed. Verify that the ramp
location cell on sheet 1 of the CS-4401 inspection form clearly
indicates the ramp location number based on the ramp location
figure from the form (shown below).

e. The right-of-way lines and construction easements must be clearly
identified in the drawings.
f. Depict and label the existing/proposed vertical elevations of the
finished grade of roadway directly at the corners of the proposed
ramp and transition ends (designated to the nearest 0.01 foot) as
shown in the following schematic.

June 20, 2017 -4- ADA CURB RAMP GUIDANCE
Example 1: Location of required spot elevations

g. Depict and label the existing and proposed longitudinal and cross
slopes of the roadway directly in front of and at the center of the
proposed curb ramp (designated to the nearest 0.010 %).
h. Depict and label proposed running and cross slope percent of the
ramp (designated to the nearest 0.010 %).
i. Depict and label existing and proposed running slopes of the
sidewalk transitions to the ramp and/or landing area (designated to
the nearest 0.010 %).
j. Depict and label running and cross-slopes of the existing sidewalk
adjacent to the sidewalk transitions.
k. Depict and label all proposed cheek walls (including the max.
reveal) or proposed grading.
l. Depict and label the vertical elevation at all four corners of existing
and proposed traffic signal foundations.
m. Depict and label the existing and proposed gutter slopes along the
entire area of curb replacement and the curb reveals at the flare
and tie-in locations.
n. Depict and label all longitudinal slopes and cross slopes for the
adjacent street in front of the curb ramps (gutter), the proposed
curb ramps and landings.
o. Provide positive drainage and avoid potential ponding issues.
p. Depict and label all pertinent slopes on the plans, including existing
and proposed conditions.

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Example 2: Location of required slopes

q. Depict and label the longitudinal slope along the Detectable
Warning Surface (DWS) or transition strip.
r. Depict and label limits of removal of existing sidewalk (designated
to the nearest 0.010 foot).
s. Depict and label proposed length and width of the ramp.
t. Dimension the length of depressed curb on skewed or radial ramps.
u. Depict and label proposed horizontal location of the landing area.
v. Depict and label proposed slopes of the landing area (designated to
the nearest 0.010 %)
w. Depict and label proposed slopes of flares (designated to the
nearest 0.010 %)
x. If large triangular areas are proposed, Depict and label the lateral
slope of the flare between the sidewalk and the bottom of the DWS.
y. Depict and label proposed horizontal measurement(s) of flares
along the curbline (designated to the nearest 0.010 foot)
z. Depict and label the proposed placement of DWS.
aa. Depict and label horizontal and vertical relationships to the
pedestrian push buttons (designated to the nearest 0.010 foot).
Include direction to note the use of any push button extension and
label the proposed length, if applicable.
bb. Depict and label the proposed/existing crosswalk line striping on
the plans and label the distance between the crosswalk and stop
bar (4 foot minimum).
cc. Depict and label any utility features within the curb ramp
construction area. Clearly show and call out the adjustment
treatment for all utilities within the limits of work.

A sample plan set is included in Appendix A.

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