Information on glass fallout and testing for glass fallout can be found in AAMA 501.6, “Recommended Dynamic Test Method For Determining The Seismic Drift Causing Glass Fallout From A Wall System”. Every surface other than inaccessible areas or areas where occupancy is prevented or access is prevented should be considered a “walking surface”.
Additional information can be found in ASCE/SEI 7, “Minimum Design Loads for Buildings and Other Structures”, in FEMA P-750, “NEHRP Recommended Seismic Provisions for New Buildings and Other Structures”, and FEMA 450-1, “NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures”, and related commentaries, and in the Commentary entitled “Design for Seismic Effects” in the “Structural Commentaries (User’s Guide – NBC 2020: Part 4 of Division B)”.