An inground flagpoles refers to a flagpole that is planted in the ground. This is a permanent pole that can withstand winds of up 130 mph, depending upon the flagpole’s height and material. Foundations are required for inground flagpoles.
The foundation is created by digging a trench, wetting the soil and pouring concrete. In the concrete, a cylindrical “groundsleeve”, or “groundsleeve”, is then placed. The groundsleeve, a thick steel cylinder having an open top with a large base, is designed to protect the flagpole the concrete’s corrosive agents. The groundsleeve is secured in place by steel plates on its outside. The groundsleeve’s interior is lined with steel wedges which firmly center your flagpole’s base. A ground spike is often included in the groundsleeve to channel lightning. However, this may not be an issue if your flagpole is fiberglass.
Flash collars may be included in foundations. These collars are designed to cover the pole’s bottom and ground sleeves and give it a finished look. To keep water out of the base of the foundation and the collar, the space between the pole and collar is sealed.
Your foundation should be deep enough to allow the flagpole to reach underground. This will prevent it from blowing over. The rule of thumb is to make sure that only 10% of the pole’s length goes underground.
Installation of larger flagpoles may require professional assistance. Ask the distributor or manufacturer whether they will install it free of charge.