When it comes to displaying patriotism at your business, size does matter and it's hard to beat the attention that a 70 ft commercial flagpole will bring. That's over six stories tall! At that height, your flag will be seen for miles around.
Let's discuss when a 70 foot pole is ideal, the structural considerations, installation process, and maintenance for flagpoles of this epic size. Fly your brand loud and proud by going big.
When a 70 Foot Flagpole is the Right Choice
Here are some prime situations when choosing a flagpole in the 70 foot range makes sense:
Large Commercial Properties - For big box stores, car dealerships, hotels, and corporate campuses, a huge flagpole matches the scale. It amplifies your branding and makes your location stand out.
Highways and Intersections - Pole heights up to 70 feet place your flags directly in the sightline of passing cars, buses, and trucks. Repetition equals lasting advertising impact.
Aviation Visibility - Maximum pole height ensures your flags are visible when planes are in flight and during airport approaches. Taller is safer.
Sports Facilities - In and around stadiums and racetracks, soaring poles build excitement and brand awareness on game day. Fans can spot them from all directions when approaching venues.
Landmarks - For parks, monuments, tourism sites, and government buildings, a signature tall pole makes a bold statement. It emphasizes significance.
Bigger flags need bigger poles. And for the largest 30 by 60 foot national flags, commercial poles up to 70 feet are required. This grand height ensures flags remain fully visible even without wind.
Built Strong and Engineered to Last
Simply stretching a standard pole to 70 feet won't work. The design, metal thickness, and reinforcements must all be engineered to handle the dynamic wind forces at that height.
70 foot commercial flagpoles are typically fabricated from heavy-duty aluminum. Durable 0.188 inch or 0.250 inch aluminum is rolled and welded into sections, reinforced with thick anchor plates at each joint.
Continuous seamless steel poles are also an option. They should be galvanized or coated for maximum corrosion resistance. Cross-section shapes like star, square, or polygonal increase stability.
No matter the material, the pole must meet strict wind load ratings. At 70 feet up, even a gentle breeze exerts force. But robust poles built to withstand 110+ mph winds will stand the test of time.
Foundation and Guying for Added Strength
With skinny, sky-high poles, the foundation and guying cables are critical. The footing design must extend well below frost line and utilize anchor bolts to fully support the massive wind load.
For installations on hillsides or rooftops, the location's structural capacity needs evaluation. Engineers must confirm the necessary rebar or extra support in the concrete base. Rooftop flagpole bases are usually counterweighted.
Galvanized steel guy wires attach to eye hooks on the pole. The angled cables provide reinforced lateral stability. With proper guying, 70 foot poles can flex up to 2% of total height in strong wind gusts.
Halyard System - Internal for Max Height
On flagpoles approaching 70 feet in height, an internal halyard system is recommended. Internal halyards keep the rope and pulleys contained inside the pole for optimum protection.
Cam locks allow easy access to the halyard door for raising and lowering the flag. Yet the door can be secured to prevent tampering. Internal systems experience less wear overall when shielded from the elements.
An external halyard would be constantly exposed at 70 feet up. The twisting and friction accelerates weathering and may increase likelihood of ropes binding or flag wrap.
Professional Installation - Don't DIY a 70 Foot Pole!
Due to the need for engineered foundations, precision lifting, and guying, installing a 70 foot pole is not a DIY endeavor. Professional rigging crews have the specialized equipment and experience required.
Truck-mounted cranes, gin poles, and boom lifts allow the safe lifting and maneuvering of these heavy, towering poles. Careful vertical alignment ensures the pole seats properly into the anchor bolts.
The installers will oversee the digging and concrete work for the footer base. For rooftop locations, structural capacity assessment and any needed reinforcement comes first. Hillsides also introduce spacing challenges.
Ongoing Service Maximizes Safety and Function
Once your mega-tall flagpole is flying high, professional assistance maximizes safety and maintenance. Trained technicians use boom lifts to access the great heights for bulb changes and halyard upkeep.
Annual inspection and cleaning preserve the pole and extend its service life. The pros have the equipment to get way up there! Floor access may also allow some interior maintenance as needed.
Let experienced riggers handle any flag changes. For poles over 50 feet, it's generally advised to keep flags flying year-round. The wind-induced forces of lowering and raising huge flags takes a toll over time.
Go Big or Go Home!
When it comes to maximum visibility for your brand, bigger is better. A 70 foot commercial flagpole makes a bold, unforgettable statement that has people looking up. You'll beam with pride watching your logo wave for all to see. Let freedom - and your brand - fly high!
(NOTE: Check out our 60' Commercial Flagpoles if you feel like 70 isn't your jam!)