Pallet Racking in Mesa, AZ

Seismic Design Category:

Mesa sits in a low seismic hazard region, but the Seismic Design Category is site-specific under ASCE 7 and depends on soil and building risk category. A licensed engineer assigns it for each project; we never assume a letter.

Engineering:

Mesa adopted the 2024 ICC codes, effective January 8, 2026, and rack seismic loads are calculated to the ANSI MH16.1 rack design standard. Lower seismic demand changes base plate and anchor sizing, not whether calculations are required.

High-Piled Combustible Storage:

Mesa enforces the 2024 International Fire Code with local amendments. Under IFC Chapter 32, combustible storage over 12 feet high, or over 6 feet for high-hazard commodities such as Group A plastics and tires, is high-piled storage. Mesa Fire and Medical Department detail FPD 3205.7 requires permanent maximum storage height signs in the middle of each storage bay, hung at the maximum storage height.

Sprinkler Coordination:

Commodity class and storage height set the sprinkler design, so the rack layout and sprinkler plan are reviewed together. Mesa requires fire inspections for commercial occupancies based on hazard classification, and a change in stored commodity or height can change your fire protection requirements.

Load Capacity:

Every beam level is rated for the actual pallet weight and posted with a capacity label. Frame capacity is checked against beam spacing, because a taller first beam elevation reduces what an upright can carry.

Anchoring:

Base plates are anchored to the slab per the engineer’s calculations for that site. Slab thickness and concrete condition are confirmed before anchors are specified.

General Duty Clause:

Arizona runs its own OSHA-approved State Plan through the Arizona Division of Occupational Safety and Health (ADOSH), part of the Industrial Commission of Arizona. ADOSH adopts federal OSHA standards by reference, including 29 CFR 1910.176(b), which requires stored material to be stable and secure, and Arizona’s general duty requirement covers rack hazards no specific standard addresses.

Ongoing Compliance:

Damaged uprights and beams should be unloaded and tagged out until repaired or replaced. A documented annual inspection gives you a record to show ADOSH if a rack hazard is ever raised.

Pre-Install Engineering Review:

Before any steel ships, our team audits your order against your site dimensions, forklift class, and pallet specs. We catch specification errors before they leave our facility – and we document everything so your receiving team knows exactly what to expect at the dock.

Post-Install Verification:

After install, we walk the system against the approved drawings: anchor count, beam locks, plumb, and label placement. Where the high-piled storage rules apply, we check the Mesa maximum storage height signs at the same walkthrough.

Zoning Compliance:

Mesa’s Zoning Ordinance (City Code Title 11) places most warehouse and manufacturing uses in the LI, GI, HI, and PEP districts. Outdoor storage is expressly allowed in LI, GI, and HI, subject to the placement and screening rules in Section 11-30-7.

Site-Specific Checks:

Parcels in a Planned Area Development overlay or a planned community such as Eastmark can carry their own development standards on top of base zoning. We confirm the zoning district and any overlay before layout starts.