An inground flag poles for sale is simply a flagpole rooted in ground. It is a permanent flagpole that is designed to withstand wind speeds up to 130 mph. This depends on the flagpole’s material and height. As trees need roots to support themselves, flagpoles in ground require foundations.
To make a foundation, you need to dig a hole, then wet the soil and then pour concrete. After the concrete has cooled, a “groundsleeve”, a cylindrical cover, is inserted into it. A groundsleeve consists of a thick steel tube with an open top, and a broad base. It is used to protect the flagpole from concrete’s corrosive elements. The steel plates at the ends of the groundsleeve hold it in place. The inside of the groundsleeve has steel wedges that secure the flagpole at its base. Groundsleeves are often equipped with a ground spike to channel off lightning. This might not be a problem if you have an aluminum flagpole.
A flash collar can be added to the foundation. It fits over the bottom of your pole and ground sleeves. The collar and pole space is sealed to keep water out from the foundation and base.
You must ensure that the flagpole is not blown over when building your foundation. As a rule of thumb, 10% should be underground.
Some larger flagpoles require professional installation. Ask the manufacturer or distributor if they are willing to do it for you.