What means with "regularly used exterior entrances"?

Sandra, you need to consider all entrances to the building, and make sure that any "regularly used" entrances meet the requirements. A fire exit, for example, is not regularly used, but a side door that employees enter through  would need to be considered.

Tristan or other experts-- what about an event space? Do you think the space is "regularly used" if it is not used every day? We have a large meeting room that is attached to the ground floor of an office building. It's entrance will be used for large special events only.

Julie, I would almost certainly include that space/entrance. I don't think "regularly used" has to be defined as "daily."

The showers and changing rooms in our building are only accessible from the building exterior. You park your bike, enter the shower area, change and exit the building. While it would technically be possible to install a walk-off mat, this would create significant maintenance problems as the showers would be much closer to the mat than the entrance.
Does this qualify as an entrance to the building as it is not possible to actually access the building from this area?

Michael, it seems consistent with the intent to either exclude this entrance or to use a shorter walk-off mat under LI #10098. I would discuss it in your review and solve to the best of your ability with reference to the intent.