michaelellars.com
Michael Ellars, AIA, APX, CSI, CCCA, CDT, LEED AP, ADAC, CASp
michaelellars.com
Michael Ellars, AIA, APX, CSI, CCCA, CDT, LEED AP, ADAC, CASp
11B-502.3 Access aisle. Access aisles serving parking spaces shall comply with Section 11B-502.3. Access aisles shall adjoin an accessible route. Two parking spaces or one parking space and one electric vehicle charging space shall be permitted to share a common access aisle.
While this may seem obvious in retrospect, the specific requirement for blue color outline striping at accessible parking access aisles conflicted with the prohibition of blue color outline striping at accessible electric vehicle charging station access aisles. Together with a new provision in Division 8, it is now clarified that these accessible vehicle spaces can share a common access aisle that is striped as required for accessible parking.
Following years of ambiguity and misinterpretation, these and similar provisions relating to “clear” spaces—such as clear floor spaces, maneuvering clearances, and so forth—are now expressly defined as prohibiting detectable warnings. As part of this revision, the former exception for 1:48 maximum slopes is relocated to the technical requirement itself.
11B-502.4 Floor or ground surfaces. Parking spaces and access aisles serving them shall comply with Section 11B-302. Access aisles shall be at the same level as the parking spaces they serve. Changes in level, slopes exceeding 1:48, and detectable warnings are shall not be permitted.
Exception: Slopes not steeper than 1:48 shall be permitted. Reserved.
…
11B-503.4 Floor and ground surfaces. Vehicle pull-up spaces and access aisles serving them shall comply with Section 11B-302. Access aisles shall be at the same level as the vehicle pull-up space they serve. Changes in level, slopes exceeding 1:48, and detectable warnings are shall not be permitted.
Exception: Slopes not steeper than 1:48 shall be permitted. Reserved.
…
11B-504.4 Tread surface. Stair treads shall comply with Section 11B-302. Changes in level, slopes exceeding 1:48, and detectable warnings are shall not be permitted.
Exception: Slopes not steeper than 1:48 shall be permitted. Reserved.