11-ITB-26-00103 Attachment 4 - FDOT Index 522-002.pdf
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- Attached to
- Sidewalk Repair and Replacement (SBE Set Aside)
- Solicitation number
- ITB-26-00103
- Issued by
- Hillsborough County, Florida
About this file
This is a standard plans specification document from the Florida Department of Transportation (FDOT) detailing detectable warnings and sidewalk curb ramps for state and local transportation projects. The document, designated as Index 522-002 and part of the FY 2020-21 Standard Plans, provides comprehensive technical specifications for the design and construction of various curb ramp configurations (CR-A through CR-L) and associated detectable warning systems. The specifications include detailed plan views, isometric views, and section diagrams that establish dimensional requirements, slope standards, and placement guidelines for curb ramps in multiple scenarios, including linear sidewalk ramps, radial sidewalk ramps, curb returns, railroad crossings, and ramps without sidewalks. Key construction standards require ramp slopes not to exceed 1:12, landing cross-slopes to remain below 0.02 in any direction, detectable warnings to be placed across the full width of ramps to a minimum depth of 2 feet, and surfaces to deviate no more than 0.10 inches from a true plane. The document specifies that 90 percent of truncated domes must comply with Americans with Disabilities Act Standards for Transportation Facilities requirements and establishes acceptance criteria limiting non-compliant domes to no more than four per square foot.
This specification document serves as a technical reference standard that contractors and design professionals must follow when executing sidewalk repair and replacement projects under Florida's state and local government contracts, such as the Hillsborough County Sidewalk Repair and Replacement contract valued at $591,250. The standards establish uniform construction and accessibility requirements across multiple jurisdictions and ensure compliance with federal disability access regulations. The detailed specifications for joint placement, curb types, pavement relief, and detectable warning installations provide contractors with precise construction guidance to meet regulatory requirements and maintain consistency in transportation infrastructure improvements throughout the state.
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Text version
RA
M P
Detectable Warnings Curb Transition
LAND
ING
SID
EW
ALK
SID
EW
ALK
STRIP
UTILITY
(Joints Permitted)
Slope Breaks
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Joints Not Permitted In Ramp
GENERAL NOTES:
CURB RAMP NOMENCLATURE
Transition Slope
T ransition S lope
E. Surfaces shall not deviate more than 0.10" from a true plane.
D. Non-compliant domes shall not be adjacent to other non-compliant domes.
C. There shall be no more than 4 non-compliant domes in any one square foot.
Disabilities Act Standards for Transportation Facilities, Section 705.
B. 90% of individual truncated domes shall be in accordance with the Americans with
A. Color and texture shall be complete and uniform.
5. Detectable Warnings - Acceptance Criteria:
not required to be aligned.
truncated domes with the centerline of the ramp; otherwise, the truncated domes are
C. If detectable warnings are shown in the Plans on slopes greater than 5%, align the
5 feet from the back of the curb or edge of pavement.
minimum depth of 2 feet measured perpendicular to the curb line and no greater than
B. Place detectable warnings across the full width of the ramp or landing, to a
A. Install detectable warnings in accordance with Specification 527.
Detectable Warnings: 4.
B. Alpha-identifications CR-I and CR-J are intentionally omitted.
purposes in the Plans.
A. Sidewalk curb ramp alpha-identifications (e.g. CR-A) are provided for reference
Curb Ramp Alpha-Identification: 3.
curb transition or to the extent that no remaining section is less than 5 feet long.
B. Remove any existing curb, curb and gutter, or sidewalk to the nearest joint beyond the
A. Refer to Index 522-001 for concrete thickness and sidewalk details.
Curb, Curb and Gutter and/or Sidewalk: 2.
with Index 522-001. No joints are permitted within the ramp portion of the Curb Ramp.
D. Joints permitted at the location of Slope Breaks. Otherwise locate joints in accordance
Ramp slopes are not required to exceed 15 feet in length.
C. Maintain a single longitudinal slope along each side of the curb ramp.
B. Landings must have cross-slopes less than or equal to 0.02 in any direction.
where the requirements cannot be met.
are maximums. With approval of the Engineer, provide the minimum feasible slope
A. Sidewalk, ramp, and landing slopes (i.e. 0.02, 0.05, and 1:12) shown in this Index
Cross Slopes and Grades:1.
A
7'-0" 7'-0"4'-0"
2'-6"
(S h o w n
Pavement)
(Grass Or
Utility Strip
A
A
(S h o w n
(S h o w n
7'-0" 4'-0"
Pavement)
(Grass Or
Utility Strip
A
45°
SIDEWALK CURB RAMPS CR-A AND CR-B
L a n d in g 4'-0" Min.
5'-0" Shown
M in
7'-0"
2'-0" Detectable Warnings
(S h o w n
(S h o w n
SECTION A-A
(Type F Curb Shown)
9" For Type E Curb
8" For Type F Curb
Ramp
Gutter Line
Sidewalk
Varies - 7'-0" (Std.) 4'-0" Min.
Rdwy. Pavt.
Varies
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PLAN VIEW PLAN VIEW
CR-A CR-B
.0
.0
.0
S id e w a lk
S id e w a lk
.0
.0
.0
R a m p
:1
L a n d in g
R a m p
:1
ISOMETRIC VIEWISOMETRIC VIEW
Sidewalk
Sidewalk
S id e w a lk
S id e w a lk
Min. Min.
For Example of CR-A used in Radial Curb Returns, See Sheet 8.NOTE:
M in
M in
Sidewalk
Strip
Utility
Sidewalk
Ra m p
Strip
Utility
Ra m p
0.02
Landing
1:12
Ramp
0.02
B
B
4'-0"
(Where Necessary)
Sidewalk Curb
SIDEWALK CURB RAMPS CR-C AND SIDEWALK CURB
SIDEWALK CURB OPTIONS
CONSTRUCTION OF SIDEWALK CURB IN CUT SECTIONS
Drop (H)
6" x 12" Separately Cast Curb
6" x H Monolithic Cast Curb Or
Transition (Where Necessary)
Back Of Sidewalk
6' -0
M in
Bu ff er
(S h o w n
6"
H (Varies)
Or Landing
Ramp, Sidewalk
Or Landing
Ramp, Sidewalk
H (Varies)
6" " R
" R
SECTION B-B
Sidewalk
Landing
(See Note)
(Where Necessary)
Sidewalk Curb
Rdwy. Pavt.
For additional information on sidewalk curb construction, see SIDEWALK CURB OPTIONS details. NOTE:
6'-0" (Shown)
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Ramp Ramp
PLAN VIEW
CR-C
.0
L a n d in g
1:12
.0
.0
S id e w a lk
Min.
R/W No Curb
Curb
Ramp
R am p
La nd in g
0.02 0.02
MONOLITHIC CAST CURB SEPARATELY CAST CURB
CR-E
PLAN VIEW
ISOMETRIC VIEW
CR-F CR-G
PLAN VIEW
ISOMETRIC VIEW
ISOMETRIC VIEW
PLAN VIEW
CR-D
.0
:1
R a m p m m p
0.02
.0
.0 m p
0.02
Sidewalk
Sidewalk Curb
2'-0" R
Landing
2'-0" R 2'-0" R
2'-0" R
Sidewalk
Sidewalk Curb
Sidewalk
Sidewalk Curb
2'-0"
G r a s
O r
P a v t
U t il it y
S t r ip
Sidewalk Curb
Sidewalk
Ramp RampRamp
2'-0" Detectable Warnings2'-0" Detectable Warnings m p
ISOMETRIC VIEW
R a
U ti li ty S tr ip
U ti li ty S tr ip m p
R a m p
Ra mp
SIDEWALK CURB RAMPS CR-D, CR-E, CR-F & CR-G
2'-0" Detectable Warnings
Sidewalk
Sidewalk
4'-0" Min.
M ax
M ax
5'-0" Min. 4'-0" Min. 4'-6" Min.
R a m p
5'-0" (Shown)
6'-0" (Shown) 6'-0" (Shown)
6'-0" (Shown)
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OPTION A
OPTION B
OPTION A
OPTION B
OPTION A
OPTION B
m p
.0
0.02
45°
Sidewalk Curb
Ramp
CR-H
D
2'-6"
(S h o w n
Pavement)
(Grass Or
Utility Strip
D
M in
45°
R a
CR-K
CR-L
E
E
U ti li ty S tr ip
R am p
Utility S trip
R am p
2'-0" R
SIDEWALK CURB RAMPS CR-H, CR-K & CR-L
Utility S trip
(Where Necessary)
Sidewalk Curb
NOTES:
4'-0" Min.
M in
M in
M in
OPTIONS details, on Sheet 3.
curb construction, see SIDEWALK CURB
3. For additional information on sidewalk
2. 15' Radius Curve Shown for CR-L.
Vary; Must Conform to Index 711-001.
1. Crosswalk Width and Configuration
2'-0" Detectable Warnings
U ti li ty S tr ip
R am p
Utility S trip R am
6'-0" (Shown)
(S h o w n
7'-0" 7'-0"4'-0"4'-0" Min.
SECTION D-D
(Type F Curb Shown)
9" For Type E Curb
8" For Type F Curb
Ramp
Gutter Line
SECTION E-E
H (Varies)
Rdwy. Pavt.
3'-0" Min.
4'-0" Min.
(See Note 3)
(Where Necessary)
Sidewalk Curb
Varies
Varies - 7'-0" (Std.)
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PLAN VIEW
.0
.0
.0
S id e w a lk
S id e w a lk
L a n d i n g
R a m p
:1
ISOMETRIC VIEW
Sidewalk
Ra m p
Strip
Utility
Sidewalk
PLAN VIEW
Ramp
1:12
.0
R a m p
:1
0.02
Crosswalk
C r o s s w a lk
Sidewalk
S id e w a lk
OPTION B
OPTION A
(Grass Or Pavt.)
Utility Strip
(G r a
O r
P a v t
U t il it y
S t r ip
Min.
M in
0.02
Landing
0.02
1:12
Rdwy. Pavt.
0.02
0.02
Landing Ramp
LANDINGS FOR CURB RAMPS WITHOUT SIDEWALKS
a m p
U ti li ty S tr ip0.02
Landing
Landing
S id e w a lk
U ti li ty S tr ip
R a m p
(See CR-F, CR-G & CR-K Respectively For Detectable Warning Details/Options)
M a x
DETECTABLE WARNING ON FLUSH SHOULDER SIDEWALKS
2'-0" Detectable Warnings
S id e w a lk
U ti li ty S tr ip
CURB RAMPS WITHOUT SIDEWALKS AND FLUSH SHOULDER SIDEWALKS
C
C
Varies (1'-6" Max.)
(See Section C-C)
Pavement Relief (If Needed)
5'-0" Min.
M in
M in
5'-0" Min.
5'-0" Min.
M in
PAVEMENT RELIEF DETAILS
SECTION C-C
Varies (1'-6" Max.)
Ramp Or Landing
Varies
Lip Of Curb
Initial Surface of Pavement
Final Surface of Pavement Relief
Remove Elevated Pavement By Spading And Rolling, Smooth Milling, or Grinding.NOTE:
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Transition Slope 1:12
Transition Slope 1:12
OPTION A OPTION B
R a m p
:1
.0
L a n d in g
ISOMETRIC VIEW
0.0
(CR-C Shown, Other Similar)
Pavement Relief
0.05 Max.
Alignment Variations
Back Of Sidewalk
4'-0"
Height Curb
4'-0" Min. FullHeight Curb
4'-0" Min. Full
3'-0" Curb Transition From Full to Zero Height
Full Height Curb, 2'-0" Min.
Rail Car Width
Gate
¡ Of Nearest Rail
M a x
M in
(See Note 3)
" Max.)
1(2
Flangeway Gap
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PLACEMENT OF SIDEWALK CURB RAMPS AT CURBED RETURNS (TYP.)
LINEAR SIDEWALK RAMPS
RADIAL SIDEWALK RAMPS
Crosswalk
Crosswalk
Crosswalk
Crosswalk
Crosswalk
RAILROAD CROSSING AND CURB RAMPS AT CURBED RETURNS
0.02
:1
1:1
.0
.0
1:12
Utility Strip
0.02
:1
:1
1:12
1:12
.0
.0
.0
0.0
M in
Min.
M in
RAILROAD CROSSING
NOTES:
3. Flangeway Gap may be up to 3" for Freight-only Railways.
2. Crosswalk widths and configurations vary; must conform to Index 711-001.
minimum is required at the bottom of the ramp outside of active travel lanes.
marked crosswalk. If crosswalk markings are not present, a clear space of 48"
A clear space of 48" minimum is required at the bottom of the ramp within a
1. Where crosswalk markings are used, ramps must fall within the crosswalk limits.
M in
M in
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