Engineered for ASCE 7-22
Designed for You
Proactive Engineering for the Latest Structural Code
The latest ASCE 7-22 structural standards bring significant changes to solar system design. Unirac has already adapted—so you don’t have to worry.
Build Smarter.
Install Faster.
Stay Compliant.
From wind and snow to seismic and tornado loads, Unirac’s engineering team has proactively updated product testing, span tables, and design tools to align with ASCE 7-22. Our goal? To ensure your project code is compliant, structurally sound, and ready for installation.
What Is ASCE 7-22 and Why Should You Care?
Every six years, the American Society of Civil Engineers (ASCE) updates its structural loading guidelines, as outlined in Standard 7. The 2022 update—ASCE 7-22—introduces new criteria for wind, snow, seismic, and tornado loads that directly affect solar PV racking.
At Unirac, we believe safety and compliance should never be an afterthought. That’s why we’ve conducted additional product testing and updated our design tools ahead of enforcement, ensuring every racking system meets or exceeds these new national benchmarks.
Key ASCE 7-22 Changes by Category
Wind Loads
Simplified roof zones (now just 3 instead of 6)
Increased wind speeds in hurricane-prone zones
New definition of “exposed modules” for pitched roofs.
Snow Loads
Net increase in design snow loads (10–20%) across many regions
Lower load factors but higher thermal factors
May require closer spans or additional components in high-snow areas
Seismic Loads
New horizontal load requirements for modules
More scrutiny from AHJs in seismic zones (e.g., California)
Unirac’s testing data supports compliance—even in ballasted systems
Tornado Loads
New tornado wind provisions for critical facilities in Tornado Alley
Applies only to Risk Category 3 and 4 buildings
Minimal impact on most PV systems, but Unirac provides support if needed
What This Means for You
For installers and designers, ASCE 7-22 compliance means simplified span tables, easier roof zone layouts, and, in many cases, fewer roof penetrations—resulting in faster and more efficient installations. Unirac’s updated documentation streamlines permitting and supports faster AHJ approvals, giving you a clear path from design to installation.
For engineers and project managers, our latest racking specifications are already built into Unirac’s design tools, saving you time and reducing risk. And when questions arise, our engineering team is ready to provide project-specific support to ensure your system is fully compliant with the nation’s most up-to-date structural code.
ASCE 7-22-Compliant Products from Unirac
These Unirac systems have been evaluated and aligned with ASCE 7-22
RM™10 EVO
Ballasted flat roof system engineered for ease of installation and low ballast requirements. Validated for seismic compliance and simplified layout under new wind zone definitions.
RM™5
Ideal for south-facing, low-ballast flat roof applications, RM5 is now certified under ASCE 7-22 for revised wind and snow loading criteria.
RMDT™
A dual-tilt, high-density flat roof system designed for maximum array coverage. Now fully compliant with ASCE 7-22 structural load standards.
ECOFOOT® 2+
Compact, modular flat roof system with minimal tools and rapid deployment. Evaluated under ASCE 7-22 for snow, seismic, and wind zones.
GRIDFLEX® 5
Commercial-grade system optimized for large flat roofs. Engineered with integrated structural bracing and now compliant with ASCE 7-22 span and load provisions.
SOLARMOUNT®
Pitched roof racking system with expanded span tables, simplified roof zone mapping, and full ASCE 7-22 alignment for wind and snow load conditions.
NXT UMOUNT®
Residential racking system with high-speed installation and domestic content availability. Compliant with updated snow, wind, and seismic provisions in ASCE 7-22.