WHEELCHAIR RAMPS - Type A/B/C/D - General Notes

Oct 23, 2026

Uploaded by asba

Standard details for wheelchair ramps designed for driveway and sidewalk locations, specifying when to use ramp types A, B, C, or D depending on site constraints and obstacles. Includes slope limits (e.g., maximum values), curb and gutter elevations, expansion joint requirements, typical sidewalk widening rules to align with crossing shelves, and drainage limitations such as no drainage structures placed inline with the ramps. General construction requirements reference 2009 ODOT standards and accessibility compliance with PROWAG, including procedures when full compliance is blocked.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages1

Reading Time3 min

AccessFree to download

General Notes

Ramp type selection

Slopes, curb, and sidewalk widening

Expansion joints and drainage restrictions

PROWAG accessibility compliance

OKLAHOMA DEPARTMENT OF TRANSPORTATION) | STANDARDREVISIONS | | --- | | DATE
DESCRIPTION | | | | | | | USETYRL"CS'RMAMDIANSCRORsTYPE"A"RAMP ISUSE TYPE "B"RAMP WHEN OBSTRUCT-PREFERRED OVER OTHERRAMP TYPES.N NS1DYMSBSNSWAEkWHTWoTYPEB'RAMPS.WHEELCHAIRRAMPS.SIDEWALK MAYBEWIDENED TO CONFORMTOA.D.A.REQUIREMENTSTYPE "C" USE TYPE "D"RAMP WHEN OTHER TYPE RAMPS DO NOT WORK WITH SITE CONDITIONS TYPE "D" FACE OF CURB | | | | | | | | --- | --- | --- | --- | --- | --- | | | | | | | | | | .09 | | 1:50 SLOPE
(MAX)
OPE
(XVW)
09:L | CURB
SGE | | | | | | | | | | LFACE OF CURB | | | | | | BACK OF CURB "EXP.JOINT "EXP.JOINT 5-6")MAX.) ).NIM(,0-5 酸强 CONCRETE CONCRETE OR GRASS OR GRASS DIVIDING DIVIDING STRIP STRIP YRESGT 5'-0" 8P (MIN.) TOP OF DEPRESSED CURB FACE OF CURB- CURB 1:12 SLOPE 1:12 SLOPE 5-4"(MIN.) STANDARD CURB GUTTER LINE ELEVATION 12" 16'-0" BACK OF 8" 8" | TOPOF CURB | DEPRESSED CURB
6'-0"·
6'-0"·
4'-0" | | | BACK OF | | --- | --- | --- | --- | --- | | | VAR.SLOPES NOT
TO EXCEED 1:12 | | VAR.SLOPES NOT
TOEXCEED 1:12 | | | | | | | SIDEWALK | | | | | | | | | | | | | 会 SIDEWALK 4'-0" GENERAL NOTES DO1 (MIN.) TOP OF TOP OF CURB 1.ALL CONSTRUCTIONAND MATERIAL REQUIREMENTS SHALL BE INACCORDANCEWITH THE 2009 ODOT STANDARD SPECIFICATIONS. CURB 2.THERE WILL BE NO DEDUCTION OF PAYMENT FOR CONCRETE CURB&GUTTERAND/ORINTEGRAL CURB FOR THE LENGTH OF THE DEPRESSED CURB. STANDARD CURB GUTTERLINE GUTTER LINE STANDARD CURB 3.DRAINAGE STRUCTURES SHALL NOT BE PLACED INLINE WITH THE RAMPS. ELEVATIONELEVATION4'-0" 2%(MAX.)DRIVE PROFILECROSS SLP.WHEELCHAIR RAMP PROFILES(TYPEAOR B)AT DRIVEWAYLOCATIONS,THE NORMAL4'-0"SIDEWALKMUST BE WIDENEDSO THATA4'PORTION OF SIDEWALKIS ALIGNED WITH SIDEWALK CROSSING SHELF IN THEDRIVEWAY PROFILE.AWIDER SIDEWALK(5'-0"TYP.)SHALLALSO BE USED AT INTERVALS LESS THAN200 FEET,TO ASSURE WHEELCHAIR PASSAGE.1/2"EXPANSION JOINTJOINT FILLER SHALL MEET THE REQUIREMENTSOF SECTION701.08 OF THE SPECIFICATIONS.THE ABOVEEXAMPLESARE TYPICALONLY AND ARE SHOWNTOILLUSTRATE POSSIBLEJOINT FILLER SHALL BE USED BETWEEN SIDEWALKKRAMPTYPES,POSSIBLERAMPLOCATIONS,POSSIBLEINLETLOCATIONS.AND HOW THERAMP WILLBE DESIGNATED ON THEPLANS.CARE SHOULD BE EXERCISED TOASSURETHAT MEDIANRAMPANDCURBRAMPLINEUPANDTHATRAMPS THROUGHOUTAPROJECTTYPICAL SIDEWALK WIDENINGAND CURBS,WHEELCHAIR RAMPS,DRIVEWAYSSTREETS,RETAINING WALLS,ETC.ARELOCATED WITH SOME DEGREE OF UNIFORMITY.AT DRIVEWAY ELEVATION 4.THE NORMAL GUTTER LINE PROFILE SHALL BE MAINTAINED THROUGH THEAREA OF THE RAMP WITHA 1:50 SLOPE(MAX.),SEE GENERALNOTE NO.9. | ●RAMP DIMENSIONS SHOWNARE BASED ONACURBHEIGHT OF SIX INCHES.
THE DIMENSIONS SHOULD BE ADJUSTED FOROTHER CURB HEIGHTS.THE
MAXIMUMPERMISSIBLESLOPES OF THE WHEELCHAIRRAMPSiS 8.33%(1:12).
RAMPSLOPE MAYBE 1:10(MAXIMUM)ALONG FACE OF TAPERED CURB. | | --- | 5.WHEELCHAIR RAMPS SHOULD BE LOCATED SO THAT THE RAMP WILL BEON THE TRAFFICAPPROACH SIDE OF ANY OBSTACLE. 6.WHEELCHAIR RAMPS SHOULDBE BUILTAS SHOWN ON THE PLANS ORASDIRECTED BY THE ENGINEERTHE TYPE OF RAMP WILL BE DESIGNATEDON THE PLANS.IFARAMP IS TO BE CONSTRUCTED ASACOMBINATIONOF TWO TYPES,(ONE SIDE TYPE"A"AND ONE SIDE TYPE "B")THE RAMP 7.PIPE RAILING CONSTRUCTIONDETAILS.WHENREQUIRED AT TYPE "B"WHEEL-CHAIR RAMPS,WILL BE SHOWN ON THE PLANS. 8.EXCAVATION,BACKFILL,EXPANSION JOINT MATERIAL,SEALERS,AND OTHERRELATED MISCELLANEOUS ITEMS WILL NOT BE PAID FOR SEPARATELYBUT THECOST THEREOF SHALL BE INCLUDED IN THE COST OF THE SIDEWALK. 9.ALL FEATURES OF CONSTRUCTION INCLUDING,BUT NOTLIMITED TO.SIDEWALKS.CURB RAMPS AND CROSSWALK MARKINGS SHALL COMPLY WITH THE PUBLICRIGHT-OF-WAYACCESSIBILITY GUIDELINES(PROWAG).WHERE SPATIALLIM-ITATIONS OR EXISTING FEATURES WITHIN THE LIMITS OF THE PROJECT PREVENTFULL COMPLIANCE WITHTHEPROWAG,THE CONTRACTOR SHALL

FAQs

When should Type A or Type B wheelchair ramps be used?

Type A is used in general situations, while Type B is preferred over other ramp types when a preferred approach is available at the site and an obstruction is handled accordingly as indicated in the standard guidance.

What slope limits apply to wheelchair ramps?

The ramp maximum permissible slope is stated as 8.33% (1:12) for wheelchair ramps, with notes allowing about 1:10 (maximum) along the face of a tapered curb.

How must sidewalk widening and alignment be handled at driveway locations?

At driveway profile locations, the normal sidewalk must be widened so that a 4-foot portion aligns with the sidewalk crossing shelf in the driveway profile, with additional wider sidewalk (5-foot typical) at intervals less than 200 feet to assure wheelchair passage.

Oct 23, 2026

Uploaded by asba