Precast wall system

1. A precast retaining wall block, configured for assembly into a retaining wall including a plurality of stacked rows of at least a plurality of said retaining wall blocks, said retaining wall block comprising:

a front face portion including a front surface, a rear surface, a top surface, and a bottom surface;

at least one web portion extending outwardly from the rear surface of the front face portion, the at least one web portion including a vertical center portion extending from the top surface to the bottom surface of the front face portion and left and right protrusions extending outwardly from the lower sides of the vertical center portion, the left and right protrusions substantially triangular; and

left and right aligning elements extending downwardly from a bottom surface of the left and right protrusions, respectively, a front surface of each aligning element aligned with the rear surface of the front face portion and extending rearward along at least a portion of the respective protrusion, the left and right aligning elements defining an alignment seat configured to engage a top portion of a web portion of a retaining wall block in a lower row of the retaining wall.

2. The precast retaining wall block of claim 1 , further comprising a rear panel portion extending between the at least one web portion and an adjacent web portion of the retaining wall block.

3. The precast retaining wall block of claim 2 , wherein the at least one web portion and the adjacent web portion extends rearward beyond the rear panel portion of the retaining wall block.

4. The precast retaining wall block of claim 2 , wherein at least a portion of a corner edge of the rear panel portion is curved.

5. The precast retaining wall block of claim 2 , further comprising a geogrid material wrapped around a top and a bottom of the rear panel portion.

6. The precast retaining wall block of claim 2 , wherein the rear panel portion includes a protrusion extending towards the rear surface of the front face portion from an inner surface of the rear panel portion, the protrusion substantially triangular.

7. The precast retaining wall block of claim 1 , further comprising:

a first reinforcing bar extending within the front face portion between left and right sides of the front face portion; and

a second reinforcing bar extending through the at least one web portion into the front face portion, the reinforcing bar configured to hook around the first reinforcing bar.

8. A precast retaining wall system comprising:

a first course including a first retaining wall block comprising:

a front face portion including a front surface, a rear surface, a top surface, and a bottom surface; and

at least one web portion extending outwardly from the rear surface of the front face portion of the first retaining wall block, the at least one web portion including a vertical center portion extending from the top surface to the bottom surface of the front face portion and left and right protrusions extending outwardly from the lower sides of the vertical center portion, the left and right protrusions of the first retaining wall block substantially triangular; and

a second course on top of the first course, the second course including a second retaining wall block comprising:

a front face portion including a front surface, a rear surface, a top surface, and a bottom surface; and

at least one web portion extending outwardly from the rear surface of the front face portion of the second retaining wall block, the at least one web portion including a vertical center portion extending from the top surface to the bottom surface of the front face portion and left and right protrusions extending outwardly from the lower sides of the vertical center portion, the left and right protrusions of the second retaining wall block substantially triangular; and

left and right aligning elements extending downwardly from a bottom surface of the left and right protrusions of the second retaining wall block, respectively, a front surface of each aligning element aligned with the rear surface of the front face portion of the second retaining wall block and extending rearward along at least a portion of the respective protrusion, the left and right aligning elements defining an alignment seat engaged with a top portion of the at least one web portion of the first retaining wall block.

9. The precast retaining wall system of claim 8 , wherein the first retaining wall block further comprises a rear panel portion extending between the at least one web portion and an adjacent web portion of the first retaining wall block.

10. The precast retaining wall system of claim 9 , wherein the at least one web portion and the adjacent web portion of the first retaining wall block extends rearward beyond the rear panel portion of the first retaining wall block.

11. The precast retaining wall system of claim 8 , wherein the second retaining wall block further comprises a rear panel portion extending between the at least one web portion and an adjacent web portion of the second retaining wall block.

12. The precast retaining wall system of claim 11 , further comprising a geogrid material wrapped around a top and a bottom of the rear panel portion of the second retaining wall block.

13. The precast retaining wall system of claim 8 , wherein the front surface of at least one of the left and right aligning elements is engaged with the rear surface of the front face portion of the first retaining wall block.

14. The precast retaining wall system of claim 6 , wherein the second retaining wall block further comprises a soil nail connection secured in earth material behind the wall system.

15. The precast retaining wall system of claim 6 , wherein the second retaining wall block further comprises a traffic barrier.

16. The precast retaining wall system of claim 8 , wherein the first retaining wall block further comprises an opening defined by the at least on web portion and further comprising:

an adjacent retaining wall block comprising an adjacent opening defined by the adjacent web portion and a beamed connection extending through the at least one web portion of the first retaining wall block and the adjacent opening of the adjacent retaining wall block.

17. The precast retaining wall system of claim 16 , further comprising a soil nail or earth anchor connecting the beamed connection to each material behind the precast retaining wall system.