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How to comply with Local Law 92 and 94?

how to comply with local law 92 and 94

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How to comply with Local law 92 and 94?

Determine the contiguous areas required to be sustainable roofing zone is the first step in order for compliance with LL 92 and 94. Following steps shall be followed:

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1. If your building has a  Low-slope roof, a roof with slope (roof slope <2:12) is called a low slope roof

a. Contiguous sustainable roofing zone equal to or over 200 square feet (100 square feet for Group R buildings five stories or less)
Where a contiguous sustainable roofing zone on a roof is greater or equal to 200 square feet(or is greater or equal to 100 square feet for Group R buildings five stories or less), either a solar photovoltaic system or a green roof system, or a combination thereof, must be installed.

If a solar photovoltaic system cannot meet or exceed a capacity of 4kW due to site conditions such as
shading, a green roof system shall be provided.

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b. Contiguous sustainable roofing zone less than 200 square feet (100 square feet for Group R buildings five stories or less)
Where a contiguous sustainable roofing zone on a roof is less than 200 square feet(or less than 100 square feet for Group R buildings five stories or less), a solar photovoltaic system that can meet or exceed a capacity of 4kW must be installed. If the requirement of 4kW cannot be met, a green roof system shall be provided.

2-High-slope roofs (roof slope >2:12)
On a high-slope roof (roof slope > 2:12), a solar photovoltaic system shall be provided. Where the solar photovoltaic system cannot meet or exceed a capacity of 4kW, the roof is exempt.

Requirements for supporting documents
Supporting documents including calculations and a shading report prepared by a qualified contractor or NYS registered design professional shall be submitted as substantiation when the solar photovoltaic system cannot accommodate 4kW in the sustainable roofing zone.

The panel efficiency used to determine the potential capacity of a solar photovoltaic system shall not be less than 15 %. A contractor that has obtained any of the following credentials shall be deemed qualified:
1. NABCEP Certification (North American Board of Certified Energy Practitioners), or
2. IBEW-NECA Electrical Journeyman & Apprentice Training (International Brotherhood of Electrical Workers and National Electrical Contractors Association), or
3. UL (Underwriters Labs) Credential.

To read more about local law 92 and 94 click here.

 

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