What is the typical ground snow load in Arizona?

Typical lowland ground snow loads in Arizona run from about 0 to 5 PSF for planning purposes. Actual jurisdictional values vary by county and elevation — always verify with your local building department.

Do all Arizona counties use the same snow load?

No. Counties commonly adopt different design snow load values based on local snow history and elevation. In Arizona, mountain and high-elevation jurisdictions can require case-study design snow loads up to 90 PSF or more. Confirm the value used on your permit set.

Do steel buildings in Arizona need special snow engineering?

Every North Point Steel steel structure ships with sealed engineering for the permit jurisdiction, sized for local snow, wind, seismic, and code requirements.

Does roof pitch matter in Arizona?

Yes. Steeper pitches shed snow more easily and reduce the ASCE 7 slope factor on smooth, cold metal roofs. Drift, slide loads onto porches, and unbalanced loads still need to be checked by the engineer.

Is this an official code value for Arizona?

No. This is a planning-level reference only. Official design snow load comes from ASCE 7 and the code adopted by the local building department.

Snow Load Reference · AZ

Arizona Snow Loads

Typical ground snow load in Arizona: 0–5 PSF for planning. Actual design values are set by your local jurisdiction and confirmed by a licensed engineer.

Planning and educational reference only. Verify final design snow loads with your building manufacturer, engineer of record, and local building department.

Typical Ground Snow Load

0–5 PSF

Very Low · 0–5 PSF

Regional considerations

Most of Arizona is a 0 PSF snow zone, but Flagstaff, the White Mountains, and the Kaibab Plateau routinely exceed 60 PSF. Elevation drives everything here.

Mountain / high-elevation zones in Arizona can require design snow loads up to 90 PSF — verify with the local jurisdiction before final design.

Designing a steel building in Arizona

Roof framing: purlin spacing and rafter depth sized to the jurisdictional design snow load, not a rule of thumb.
Drift & unbalanced loads: checked against parapets, adjacent rooflines, and rooftop equipment.
Snow slide: smooth steel panels shed snow — slide loads onto porches, lean-tos, and adjacent buildings are part of the design.
Foundations: snow-driven column reactions size piers, anchor bolts, and slab reinforcement.

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Arizona Snow Load FAQs

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Planning reference only — not an official code value. Confirm final design snow loads with your building manufacturer, engineer of record, and the Arizona permitting authority.