We use 50 KSI steel
We use steel that exceeds the 36 KSI typical in many tower designs. Why? Because 50 KSI steel adds strength, saves weight and offers roughly 55 percent more steel in all legs and bracing members.
AN Structures uses more bolts at section intersections
We use 24 half-inch diameter bolts at each section joint (eight bolts per leg). We also place heavy steel plates on each side of joints for support. And we use half-inch bolts at the top and bottom of the tower. As a result, you can raise a complete tower with a crane from a horizontal position and not worry about stressing the joints.
AN Structures let you climb painlessly.
We offer 5/8ths-inch diameter step bolts as optional hardware, spaced every 18 inches for an ankle-saving climb to the top of your tower. No need to fight your way up climbing braces that are installed at awkward angles.
AN Structures gives you your money's worth in overall height
Many competitors use overlapping section joints that can rob you of several feet on the overall height on a large tower. With our 100-foot tower, you get 100 feet in the air.
Improved windloading figures
Thanks to computer-aided design modeling software, AN Structures offers up to a 60-percent advantage in available windloading area over similar designs. We also offer a tower and a foundation that will sustain a 140 mph wind zone ... which many manufacturers can't.
AN Structures won't rust on the edges
Many towers are built using pregalvanized material. Cutting, bending and fabricating after galvanizing leaves edges unprotected and open to corrosion. AN Structures receive full hot-dip galvanizing treatment the proper way — after the fabrication is done — adding decades to the life of your tower.
Our towers are built for the extremes
Our towers have roughly a 1/8th-inch gap in between each section, allowing for expansion of the steel in extreme cases to prevent buckling.
AN Structures uses a real sub-surface foundation
Some competitors use a sub-surface base detail that consists of nothing more than leg extensions or anchor bolt. We prefer to include a half-section of the next-largest tower section for the sub-surface tower base, complete with horizontal bracing, to be embedded in concrete for added strength.
A rigid mounting surface is standard equipment on AN Structures
We supply fully galvanized, top-mounted, 1/8th-inch angle horizontal members with each tower, providing a horizontal mounting surface at the tower's top. This also allows safe antenna maintenance 360 degrees around the tower by doubling as a handy tie-off point for the climber.
AN Structures offers fall-arrest options that meet OSHA regulations
A steel safety cable can be installed on one or all three faces of each AN Structures tower. We also offer climbing harnesses and safety sleeves that lock onto the cable. Both of these options may be ordered separately, and installed on your tower in the field at any time.
Custom hardware may be fabricated for AN Structures
We can fabricate custom-made parts for your tower. Antenna mounting plates, side arms, work platforms and rooftop mounting kits can be built to order.
Spare parts are always available
If a leg or a brace should ever become damaged or bent, replacement parts are only a telephone call away. Everything on your tower is replaceable in the field using just a crescent wrench.
AN Structures is happy to help
If zoning regulations are preventing you from installing your new tower, we can help. Professional engineers with licenses in 50 states and certain Canadian provinces can provide engineering drawings, complete seal, and specifications to township supervisors. We can also speak with persons in charge of the permit-granting process.