drain grate openings in parking lot

[Jc67roch]

I am looking for a resource that may recommend or require a maximum or minimum opening size for drain grates placed within a parking lot but subject to some pedestrian traffic. Pedestrian traffic would be limited to those using the regular parking spaces. The drain inlet would not be located within the ADA walkway from the handicap spaces to the building entrance, and therefore I don't think we are required to use an ADA/Heel proof grate. Can anyone verify or dispute this assumption? Reference docs I should review? Thank you.

 

[civilman72]

If it's in a parking lot, I would recommend using a pedestrian/bicycle-acceptable grate.

 

[Jc67roch]

I agree, but is there any document or regulation that requires use of such a grate?

 

[civilman72]

If you want a quick reference, every grate manufacturer catalogue clearly states which grates are acceptable for ped/bike xing.

ADA standards discuss maximum openings in grates, but I'm not aware of different grate designs for peds/bikes vs. ADA access, I believe the grates are the same.