Steel Pole Thickness Explained: A Buyer's Guide

When shopping for drive-thru menu boards, most buyers compare screen brightness, software features, and price. Few ask about the steel poles holding everything up. 

Pole thickness is critical because it determines whether your equipment survives decades or fails during the first major storm. Thicker poles also speed up permitting, reduce long-term maintenance costs, and protect the safety of your customers and employees.

Understanding Steel Gauge for Poles

The Howard Company's Drive-thru poles use structural steel between 3/16" and 5/16" thick to meet wind load requirements across all U.S. regions. However, pole thickness alone doesn't determine wind load capacity, but the size and design of the sign plays an equally critical role.

A larger sign creates more wind resistance, requiring a thicker pole to handle the structural load. For example, our all-in-one drive-thru systems with large menu displays use different pole specifications than smaller canopies or clearance bars.

Steel thickness is measured by a "gauge" number. Here's the confusing part: higher gauge numbers actually mean thinner steel. A 7-gauge pole (3/16") is much stronger than an 11-gauge pole (1/8").

Why does thinner steel exist? It's cheaper and lighter. Thinner gauges require less material, so equipment costs less to make and ship.

The problem: Budget equipment often uses thinner steel to cut costs. However, those savings disappear when the structure fails permitting in high-wind regions or worse, collapses during a storm. What appears to be a great deal upfront can quickly become a safety risk, a permit rejection, or an expensive replacement.

Important: Wind load ratings depend on both pole thickness AND the size/design of the structure. The ratings below are examples from The Howard Company's engineered products:

Key Insight: Notice how a 3/16" pole can achieve different wind ratings (115 MPH vs 180 MPH) depending on the sign size and structural design. This is why working with experienced engineers matters—they optimize the entire system, not just the pole thickness.

Why Does Pole Thickness Matter for Your Business?

Pole thickness affects four things that directly impact your bottom line:

1. Permitting Speed: Every area has wind load requirements based on local weather. When you use equipment engineered to maximum specifications, it passes structural review on the first try. This means no redesigns, no delays, and no surprise costs.

2. Equipment Lifespan: Thicker steel withstands years of wind, weather, and daily movement without weakening. When poles are too thin, they sway excessively in high winds, which causes damage at the welded connections and base. Thicker steel minimizes movement and damage, significantly extending your equipment's lifespan.

3. Liability Protection: Under-engineered structures can fail during storms, creating serious safety risks and legal liability. Real-world sign collapses have happened in wind speeds as low as 65-70 MPH when poles weren't built to proper standards. Using properly engineered equipment protects your business and customers.

4. Right Sizing Matters: Over-engineering costs you money; under-engineering puts you at risk. Professional engineers match pole thickness to your specific structure type, ensuring you get the right specification for your equipment without unnecessary costs.

4 Questions You Should Ask Your Equipment Provider:

Before purchasing drive-thru menu boards, ask these 4 questions:

• What gauge steel do you use for poles, and how does it match my structure size?
  Larger menu boards need thicker poles or additional engineering. Look for 7 gauge (3/16") minimum for standard applications.
• Can you provide engineering documentation for permitting? Site-specific windload calculations speed up approvals.
• Do you have in-house engineers for custom requirements? Unique sites may need non-standard specifications.
• What structural standards do you comply with? Look for AASHTO, ASTM, and ASCE 7 compliance.
• How do you optimize structure design for wind load? Experienced engineers consider sign size, pole placement, and structural design—not just pole thickness alone.

How The Howard Company's Engineer Team Approaches Structural Engineering

We engineer all menu board structures using 3/16" (for Standard Structures) and 5/16" (for High Wind Load Structures) thick structural steel. All structures comply with AASHTO, ASTM International, and. ASCE 7 standards.

Our in-house engineering team:

• Designs standard products built to maximum specifications for their intended use, ensuring nationwide deployability
• Creates custom solutions for unique sites, branding requirements, or challenging installations
• Provides wind load calculations and documentation that streamline your permitting process
• Optimizes the entire structure (not just pole thickness) to achieve the required wind ratings efficiently

The bottom line: Thicker isn't always better if it's not needed for your application. Our engineers match pole specifications to your specific equipment type, ensuring safety and compliance without unnecessary costs.