A two-piece truss leg with an articulating coupler for an A-frame-shaped truss foundation system for single-axis trackers. The coupler is attached to the head of each screw anchor to enable it to be driven. A connection portion extends above the coupler and is received within an open end of an upper leg to allow the upper leg to be misaligned with respect to it corresponding screw anchor.

A vertical column has a column body extending between a first end and a second end. The column body includes a main body, a conical portion extending from the main body, and a tip portion extending from the conical portion. The vertical column includes a first helical structure extending around a portion of the main body and a second helical structure extending around a portion the tip portion.

A load support system includes an elongate support member having a first diameter and a first end and a second end. The elongate support member includes, toward the first end, a first portion for direct earth burial and further includes, toward the second end, a second portion to which the load can be coupled. The first portion has a first length. The system additionally includes a lateral support having a second diameter greater than the first diameter and a second length less than the first length. The lateral support is mounted about the first portion of the elongate support member. The lateral support includes a first opening formed therein at a first location relative to a long axis of the elongate support member and a second opening formed therein at a different second location relative to the long axis in order to support a range of embedment depths.

A load support system includes an elongate support member having a first diameter and a first end and a second end. The elongate support member includes, toward the first end, a first portion for direct earth burial and further includes, toward the second end, a second portion to which the load can be coupled. The first portion has a first length. The system additionally includes a lateral support having a second diameter greater than the first diameter and a second length less than the first length. The lateral support is mounted about the first portion of the elongate support member. The lateral support includes a first opening formed therein at a first location relative to a long axis of the elongate support member and a second opening formed therein at a different second location relative to the long axis in order to support a range of embedment depths.

A one-piece truss adapter for supporting single-axis trackers with truss foundations. A y-shaped structure has a pair of legs with an angularly adjustable connector for securely joining the one-piece adapter to a pair of driven screw anchors at different angular orientations. Each leg terminates in a ball-shaped connector that is received in a socket integral to a driving coupler at the head of each screw anchor. A retaining nut holds the connector in place to complete the angularly adjustable assembly.

A two-piece truss leg system for an A-frame-shaped truss foundation system for single-axis trackers. A driving coupler at the head of each screw anchor used to drive the component into the ground as well as to join the upper leg component to the screw anchor. A connecting portion of the coupler extending above a main body of the coupler is received within an open end of an upper leg component. A curved outer surface of the connecting portion enables the upper leg component to be angularly adjusted relative to the screw anchor. A channel in the connecting portions enables the upper leg component to be deformed into the channel with a crimp connecting.

A one-piece truss adapter for supporting single-axis trackers with truss foundations. A upside-down Y-shaped structure has bearing support portion and an opposing pair of legs with an angularly adjustable connector for securely joining the one-piece adapter to a pair of driven screw anchors at different angular orientations. Each leg terminates in a connector that is received in a socket integral to a driving coupler at the head of each screw anchor. A retaining nut may hold the connector in place to complete the angularly adjustable assembly.

A machine for driving a pair of screw anchors at substantially the same time. An attachment supports a pair of independent drive assemblies. Each assembly consists of a rotary driver and tool driver that moves along respective driving arms to independently drive a pair of screw anchors into supporting ground at different angles. Each assembly may move with respect to the machine independently to drive anchors into the ground in overlapping time, or both may rotate at once to drive anchors into the ground sequentially.

Fixed-tilt solar arrays constructed from screw anchors. In some cases, purlins are attached directly to truss legs. In others, they are attached to truss caps joining the free end of each truss leg. In still further ones, screw anchors are driven in rows and interconnected by a pair of hinged members, one of which provides a mounting plane for solar panels. Each screw anchor may serve as a connection point for the trailing hinged member of the first foundation and the leading hinged member of the next foundation. In still further cases, a hinged truss cap may be used to accommodate different tilt angles with the same foundation.

Fixed-tilt solar arrays constructed from screw anchors. In some cases, purlins are attached directly to truss legs. In others, they are attached to truss caps joining the free end of each truss leg. In still further ones, screw anchors are driven in rows and interconnected by a pair of hinged members, one of which provides a mounting plane for solar panels. Each screw anchor may serve as a connection point for the trailing hinged member of the first foundation and the leading hinged member of the next foundation. In still further cases, a hinged truss cap may be used to accommodate different tilt angles with the same foundation.