(1)
Arabic numerals indicating the assigned floor number in both visual and tactile forms in accordance with Article 3.8.3.1. shall, be mounted permanently on the wall on the stair side and on the floor side at the latch side of doors to exit stair shafts.
(2)
Upper case letters indicating the designation assigned to each exit stair shaft in both visual and tactile forms in accordance with Article 3.8.3.1. shall mounted permanently on the wall on the stair side and on the floor side at the latch side of doors to exit stair shafts.