I am updating our in-house checklists and one item on there is
"Ceilings over 2500 sq. ft. require seismic joint" And references ASCE 7 22.214.171.124.2 (h)
The CBC now references ASTM C635 & C636 (CBC 808.1.1.1) which does not mention it at all. Is the ASCE document still valid?