CURB RADIUS - PERPENDICULAR - Standard Plan F-40.15-05 - Sheet 10F 1

Oct 28, 2026

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Engineering drawing text for a curb ramp system defining curb radius and perpendicular curb ramp configurations. Specifies two perpendicular types (A and B with buffer), cement concrete curb ramp details, payment limits referenced by note 6, and legend and notes governing crosswalk alignment, grade breaks, and restrictions on grating or utility appurtenances placement. Includes slope and finish requirements, guidance for design/formwork and measurement limits, and recommends broom finish per standard specifications.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages1

Reading Time3 min

AccessFree to download

NOTES

Slope and grade break requirements

Construction restrictions and finishing

PERPENDICULAR

CURB RAMP standard plan identification

TYPE PERPENDICULAR A DRAWN BY:FERN LIDDELL # CURB RADIUS DETAIL⑧ CEMENT CONCRETE CURB RAMP PERPENDICULAR "A"PAY LIMIT (SEE NOTE 6) TYPE PERPENDICULAR B (SHOWN WITH BUFFER) CEMENT CONCRETE CURB RAMP～PERPENDICULAR "B"PAY LIMIT(SEE NOTE 6) LEGEND # NOTES 1.At marked crosswalks,the connection between the curb ramp and the road-way must be contained within the width of the crosswalk markings. 2.Where "GRADE BREAK"is called out,the entire length of the grade breakbetween the two adjacent surface planes shallbe flush. 3.Do not place Gratings,Junction Boxes,Access Covers,or other appurten-ances on any part of the Curb Ramp or Landing,or in front of the CurbRamp where it connects to the roadway. 4.See Contract Plans for the curb design specified.See Standard PlanF-10.12 for Curb,Curb and Gutter,Depressed Curb and Gutter,andPedestrian Curb details. 5.Se Standard Plan F-30.10 for Cement Concrete Sidewalk Details.SeeContract Plans for width and placement of sidewalk. 6.The Bid Item "Cement Concrete Curb Ramp Type __"does not include theadjacent Curb,Curb and Gutter,Depressed Curb and Gutter,PedestrianCurb,or Sidewalks. 7.The running slope of curb ramps shall not exceed 8.3%maximum exceptas noted herein.If the 8.3%running slope creates a ramp that exceeds15 ft,see contract plans for details.Use a single constant slope frombottom of ramp to top of ramp to match into the landing.Do not includethe abutting landing in the Curb Ramp length measurement. 8.Curb Ramps and Landings shallreceive a broom finish.See StandardSpecification Section 8-14. 9.Pedestrian Curb may be omitted if the ground surface at the back of theCurb Ramp and/or Landing will be at the same elevation as the CurbRamp or Landing and there will not be material to retain. SLOPE IN EITHER DIRECTION米 1.5%OR FLATTER RECOMMENDED FORDESIGN/FORMWORK(2.1%MAX.)DESIGN/FORMWORK(8.3%MAX.)米米米9.5%OR FLATTER RECOMMENDED FORDESIGN/FORMWORK(10%MAX.) Aug 31,2026 # PERPENDICULAR CURB RAMP STANDARD PLAN F-40.15-05 SHEET 10F 1 SHEET | APPROVED FOR PUBLICATION
Aug 31,2026 | | --- | | STATE DESIGNENGINEER
Washington State
Department of Transportation |

FAQs

What constraint must be satisfied at marked crosswalks regarding the curb ramp connection?

The connection between the curb ramp and the road-way must be contained within the width of the crosswalk markings.

What are the restrictions on placing gratings, junction boxes, or access covers around the curb ramp?

Do not place gratings, junction boxes, access covers, or other appurtenances on any part of the curb ramp or landing, or in front of the curb ramp where it connects to the roadway.

What slope limits and formwork guidance are specified for curb ramps?

The running slope must not exceed 8.3% maximum except as noted. If an 8.3% running slope creates a ramp longer than 15 ft, the contract plans provide details; use a single constant slope from bottom to top and do not include the abutting landing in the curb ramp length measurement.

Oct 28, 2026

Upload by Riley