PD 1096 IRR Rule VIII - DPWH National Building Code ... ; WebSep 30, 2016 · Rule VIII of the 2004 Revised implementing rules and regulations (IRR) of P.D. No. 1096, the 1977 National Building Code of the Philippines (NBCP) deals with Light and Ventilation for buildings i.e. site occupancy, courts, ceiling heights, room sizes and dimensions, window openings, vent shafts and the Guidelines on Easements, View …