Abstract: A basement system includes a concrete basement and a drain channel. The concrete basement includes a basement slab and a basement wall. The basement slab presents a floor surface, with the basement wall extending about the floor surface. The basement slab and basement wall cooperatively define a trench that extends along the basement wall and below the floor surface to receive water in the basement. The drain channel is located at least partly in the trench to collect water therein. The drain channel includes an elongated channel tube and an upright riser integrally formed with the channel tube. The channel tube includes axially-extending opposite side walls that at least partly define an interior to receive water, with at least one of the side walls presenting openings that permit water ingress from the trench to the interior. The riser extends upwardly from one of the side walls and engages the basement wall.

Abstract: A helical pile coupler assembly is operable to be drivingly attached to a helical pile section and is rotatable with the helical pile section about a coupler axis. The coupler assembly is operable to transfer torque supplied by a rotating drive to the helical pile section as the helical pile section is driven through the ground. The coupler assembly includes male and female couplers that define a projection and a socket, respectively. The male and female couplers are shiftable relative to each other along the coupler axis into and out of a mated condition where the projection and socket are mated so that the couplers drivingly engage each other and are configured to transfer torque therebetween. The socket is shaped to removably receive the projection in the mated condition.