In a preferred embodiment of the invention there is a post comprising a plurality of poles 5 located in and extending from a ground surface adjacent to one another. A sleeve 1 is arranged around the poles 5 so that the sleeve and poles combine to provide a shaft. In this embodiment each pole has a tapered ground-engaging end 6 and the sleeve has a large compartment 2 for two of the poles 5 and a small compartment 3 for one of the poles.

A system is disclosed herein comprising a stake with a first end portion configured to support a top component, a second end portion configured to be positioned at least partially underground, an anti-twist device formed on the second end portion, and a stabilizing component formed on the second end portion between the anti-twist device and the first end portion. The system also includes a shell with a longitudinal opening configured to receive at least part of the first end portion of the stake. The shell has a lower end that is configured to contact the ground when the system is in use. Corresponding devices and methods also are disclosed.

A system is disclosed herein comprising a stake with a first end portion configured to support a top component, a second end portion configured to be positioned at least partially underground, an anti-twist device formed on the second end portion, and a stabilizing component formed on the second end portion between the anti-twist device and the first end portion. The system also includes a shell with a longitudinal opening configured to receive at least part of the first end portion of the stake. The shell has a lower end that is configured to contact the ground when the system is in use. Corresponding devices and methods also are disclosed.

A structure of a sign pole is provided. The sign pole includes a tubular member that has a predetermined outer diameter, a predetermined inner diameter, and a predetermined thickness. In a state in which the sign pole is embedded in a ground, the sign pole includes a reinforcement portion having a thickness different from the predetermined thickness while maintaining the predetermined outer diameter in a first range from a first position equal to or lower than a level of a ground surface to a second position located a predetermined distance above the level of the ground surface. The reinforcement portion has a thickness larger than the predetermined thickness.

A structure of a sign pole is provided. The sign pole includes a tubular member that has a predetermined outer diameter, a predetermined inner diameter, and a predetermined thickness. In a state in which the sign pole is embedded in a ground, the sign pole includes a reinforcement portion having a thickness different from the predetermined thickness while maintaining the predetermined outer diameter in a first range from a first position equal to or lower than a level of a ground surface to a second position located a predetermined distance above the level of the ground surface. The reinforcement portion has a thickness larger than the predetermined thickness.

In one embodiment of the present disclosure, an attachment assembly for coupling to a base plate includes a substantially planar attachment plate having a top side and a bottom side, a magnet assembly including at least three magnets, each of the at least three magnets having a first side and a second side opposite the first side, the first sides of the at least three magnets are configured for coupling with the bottom side of the attachment plate, wherein the at least three magnets each have a first end and a second end, such that the first end of each magnet is adjacent a second end of an adjacent magnet to form an array, and a shim plate removably coupled to the second side of the at least three magnets.

A system is disclosed herein comprising a stake with a first end portion configured to support a top component, a second end portion configured to be positioned at least partially underground, an anti-twist device formed on the second end portion, and a stabilizing component formed on the second end portion between the anti-twist device and the first end portion. The system also includes a shell with a longitudinal opening configured to receive at least part of the first end portion of the stake. The shell has a lower end that is configured to contact the ground when the system is in use. Corresponding devices and methods also are disclosed.

A structure of a sign pole is provided. The sign pole includes a tubular member that has a predetermined outer diameter, a predetermined inner diameter, and a predetermined thickness. In a state in which the sign pole is embedded in a ground, the sign pole includes a reinforcement portion having a thickness different from the predetermined thickness while maintaining the predetermined outer diameter in a first range from a first position equal to or lower than a level of a ground surface to a second position located a predetermined distance above the level of the ground surface. The reinforcement portion has a thickness larger than the predetermined thickness.

A structure of a sign pole is provided. The sign pole includes a tubular member that has a predetermined outer diameter, a predetermined inner diameter, and a predetermined thickness. In a state in which the sign pole is embedded in a ground, the sign pole includes a reinforcement portion having a thickness different from the predetermined thickness while maintaining the predetermined outer diameter in a first range from a first position equal to or lower than a level of a ground surface to a second position located a predetermined distance above the level of the ground surface. The reinforcement portion has a thickness larger than the predetermined thickness.

A method of forming a post sleeve within a post hole in the ground to include a post receiving cavity to insertably receive and support a post is provided. The method includes positioning a post sleeve core within the post hole with the aid of an elongate installation member and depositing uncured material into the post hole to at least partially surround the post sleeve core while the post sleeve core is attached to the elongate installation member. The method further includes allowing the uncured material to harden around the post sleeve core to form at least a portion of the post-receiving cavity of the post sleeve and removing the post sleeve core from the hardened material to expose the post receiving cavity to receive and support the post. Other related methods of forming post sleeves are also provided.