Abstract: A wall block includes an upper surface, a lower surface, and a body having a front portion, a rear portion, and an intermediate portion interconnecting the front and rear portions. The intermediate portion defines a minimum spacing between opposing outer side surfaces of the intermediate portion. The rear portion includes first and second tail sections disposed on opposite sides of a centerline of the block, each tail section having forward-facing and rearward-facing surfaces. First and second protrusions are formed on the upper surface on opposite sides of the centerline and are positioned closer to the rearward-facing surfaces of the tail sections than to a front surface of the block. Each protrusion is laterally spaced from a respective outer side of the block by a defined distance. The minimum spacing of the intermediate portion is less than twice the lateral spacing of each protrusion from the respective outer side.

Abstract: A wall block includes a first end portion, a second end portion, and an intermediate portion extending between the interconnecting the first and second end portions. The first end portion includes a first face and first and second opposing side surfaces. The second end portion includes a second face and third and fourth opposing side surfaces. The first and second side surfaces taper toward each other extending in a direction from the first face toward the second face. The third and fourth side surfaces taper toward each other extending in a direction from the second face toward the first face.

Abstract: A wall block comprising first and second opposing, parallel side walls extending lengthwise and first and second opposing, parallel end walls extending between respective ends of the side walls is disclosed. The first and second side walls are longer than the first and second end walls. At least first and second trapezoidal shaped projections extend outwardly from the first side wall, where the first and second projections are configured to be received in slots of adjacent blocks in a wall. A block assembly comprising a trunk block and a face block is also disclosed, where at least one trapezoidal shaped slot is configured to receive a trapezoidal shaped projection of the trunk block. A wall comprising at least a first course comprising a plurality of face blocks and a plurality of trunk blocks is further disclosed.

Abstract: A wall block lifting apparatus can include a support member, first and second adjustment members, first and second posts, and first and second gripper elements. The adjustment members can be adjustably coupled to the support member such that the adjustment members are movable between a lifting position and a release position. The first post can be coupled to and extend from the first adjustment member, and the second post can be coupled to and extend from the second adjustment member. The first and second gripper elements can be respectively coupled to and extend from the first and second posts, and the first and second gripper members can be configured to securely engage a wall block when the first and second adjustment members are in the lifting position and to release the wall block when the first and second adjustment members are in the release position.