Chapter 15 — ROOF ASSEMBLIES AND ROOFTOP STRUCTURES

Section 1511 — ROOFTOP STRUCTURES

2025 California Building Code (Title 24, Part 2) · 2025 edition · ingested 2026-07-07 · California

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[BG] 1511.1 General. The provisions of this section shall govern the construction of rooftop structures. 1511.1.1 Area limitation. The aggregate area of penthouses and other enclosed rooftop structures shall not exceed one-third the area of the supporting roof deck. Such penthouses and other enclosed rooftop structures shall not be required to be included in determining the building height, number of stories or building area as regulated by Section 503.1. The area of such penthouses shall not be included in determining the fire area specified in Section 901.7. [BG] 1511.2 Penthouses.…

1511.10 Photovoltaic (PV) panel systems.

1511.10 Photovoltaic (PV) panel systems. [BSC, DSA-SS, DSA-SS/CC, HCD 1 & HCD 2, OSHPD 1, 1R, 2, 4 & 5] Rooftop-mounted photo- voltaic panels and modules shall be listed and labeled in accordance with Section 3111.3.1 and installed in accordance with the manufacturer’s printed installation instructions. 1511.10.1 Design. [BSC, DSA-SS, DSA-SS/CC, HCD 1 & HCD 2, OSHPD 1, 1R, 2, 4 & 5] Supports and attachments of photovoltaic panels to the roof structure, the panels, modules and components shall be designed in accordance with this code. 1. Seismic design shall be in accordance with ASCE 7…