PDFWAC 51-50-0503
Section 503—General building height and area limitations.
503.1.4.1 Enclosure of occupied roof areas. Elements or structures enclosing the occupied roof areas shall not extend more than 48 inches (1220 mm) above the surface of the occupied roof.
EXCEPTIONS: | 1. Penthouses constructed in accordance with Section 1511.2 and towers, domes, spires, and cupolas constructed in accordance with Section 1511.5. |
2. High rise buildings. |
503.1.4.2 Guards. Occupied roofs shall have guards in accordance with Section 1015.2.