Requirements for controlling the deflection of photovoltaic panels on roofs

CHAPTER 5 CS PHOTOVOLTAIC SYSTEMS

The structure of a roof that supports solar photovoltaic panels or modules shall be designed to accommodate the full solar photovoltaic panels or modules and ballast dead load, including concentrated loads from support frames in

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Special Deflection requirements are typically described as "L" or "H" "/" (over) a number that describes the deflection limit. The architect or engineer of record is the best source to

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Requirements for controlling the deflection of photovoltaic panels on roofs

6 FAQs about [Requirements for controlling the deflection of photovoltaic panels on roofs]

Does a roof support solar photovoltaic panels or modules?

The structure of a roof that supports solar photovoltaic panels or modules shall be designed to accommodate the full solar photovoltaic panels or modules and ballast dead load, including concentrated loads from support frames in combination with the loads from Section CS507.1.1.1 (IBC 1607.13.5.1) and other applicable loads.

What conditions should a roof support a photovoltaic panel system?

Roof structures that support photovoltaic panel systems shall be designed to resist each of the following conditions: 1. Applicable uniform and concentrated roof loads with the photovoltaic panel system dead loads.

What are the requirements for solar panels on a low-slope roof?

Ballasted, unattached PV systems on low-slope roofs have to meet seven conditions to comply with seismic load requirements in Section 13.6.12. For low-profile systems, the height of the center of mass of any panel above the roof surface must be less than half the least spacing in plan of the panel supports, but in no case greater than 3 feet.

Can a roof deck support a photovoltaic panel system?

Structures with open grid framing and without a roof deck or sheathing supporting photovoltaic panel systems shall be designed to support the uniform and concentrated roof live loads specified in Section CS507.1.1.1 (IBC 1607.13.5.1), except that the uniform roof live load shall be permitted to be reduced to 12 psf (0.57 kN/m 2).

Are solar panels required for a roof photovoltaic live load?

Solar photovoltaic panels or modules that are independent structures and do not have accessible/occupied space underneath are not required to accommodate a roof photovoltaic live load, provided the area under the structure is restricted to keep the public away.

Can PV panels be installed on a new roof?

For example, some jurisdictions in CA and CO now require PV panels to be installed on certain new roof structures. The primary code used by structural engineers in the determination of applicable loads on buildings is ASCE 7: Minimum Design Loads for Buildings and Other Structures which is adopted by reference in the IRC and IBC.

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