Modular pool

1. A modular swimming pool comprising:

a precast base unit including an uneven stepped surface having a first surface having a first height and a second surface having a second height greater than the first height, the first surface extending to a perimeter of the precast base unit;

a precast riser unit separate from the precast base unit and secured to the precast base unit, the precast riser unit including at least two connecting sidewall portions, at least one internal surface, an open upper end, and a lower surface configured to engage and align with the precast base unit so the lower surface of the precast riser unit and the first surface of the precast base unit are in facing engagement at the perimeter of the precast base unit; and

at least one precast internal structure that is separate from the precast base unit and the precast riser unit,

wherein the precast base unit and the at least one internal surface of the precast riser unit define an interior of the pool when the precast base unit and the precast riser unit are secured together, and

wherein the at least one precast internal structure is configured to be arranged within the interior of the pool as desired by a user.

2. The modular swimming pool of claim 1 , wherein the at least one precast internal structure includes at least one structure selected from a bench and a step.

3. The modular swimming pool of claim 1 , consisting essentially of the precast base unit, the precast riser unit, and the at least one precast internal structure.

4. The modular swimming pool of claim 3 , wherein the precast riser unit is seated on the precast base unit and the at least one precast internal structure is positioned on the upper surface of the base unit.

5. The modular swimming pool of claim 1 , wherein the precast riser unit includes at least one port in fluid communication with the interior of the pool.

6. The modular swimming pool of claim 5 , wherein the at least one port includes a skimmer port.

7. The modular swimming pool of claim 5 , wherein the at least one port includes a channel configured to be connected to external piping.

8. The modular swimming pool of claim 1 , wherein the precast base unit and the precast riser unit are secured together by a joining material.

9. The modular swimming pool of claim 8 , wherein the joining material is an adhesive material.

10. The modular swimming pool of claim 9 , wherein the joining material is mortar.

11. The modular swimming pool of claim 1 , wherein the precast base unit and the precast riser unit are secured together by a joining material, and wherein the precast base unit and at least one of the at least one precast internal structure are secured together by the joining material.

12. The modular swimming pool of claim 11 , wherein the joining material is an adhesive material.

13. The modular swimming pool of claim 1 , wherein the precast base unit includes a side wall, and the stepped surface of the precast base unit is formed on the side wall of the precast base unit.

14. The modular swimming pool of claim 1 , wherein the at least one precast internal structure includes a bench, a bottom step supported on the upper surface of the precast base unit, and a top step supported on the bench, each precast internal structure being separate from the precast base unit and the precast riser unit.

15. A method of assembling a modular swimming pool, the modular swimming pool including a precast base unit having an upper surface and an uneven stepped surface, a precast riser unit securable to the precast base unit, the precast riser unit being separate from the precast base unit, the precast riser unit including at least two connecting sidewall portions, at least one internal surface and a recess configured to engage and align with the corresponding uneven stepped surface of the precast base unit, the upper surface of the precast base unit and the at least one internal surface of the precast riser unit defining an interior of the pool when the precast base unit and the precast riser unit are secured together, and the modular swimming pool further including at least one precast internal structure that is separate from the precast base unit and the precast riser unit and is configured to be arranged within the interior of the pool as desired by a user, the method comprising:

delivering the precast base unit, and the precast riser unit, and the at least one precast internal structure to an installation site;

positioning the precast base unit at the installation site;

securing the precast riser unit to the precast base unit so that the precast base unit and the precast riser unit define the interior of the modular swimming pool; and

positioning the at least one precast internal structure within the interior of the pool.

16. The method of assembly a modular swimming pool of claim 15 , further comprising adding a liner that extends over the upper surface of the base unit and the internal surface of the riser unit.

17. The method of assembling a modular swimming pool of claim 15 , further comprising using at least one blank to form at least one port on the riser unit in fluid communication with the interior of the pool.

18. The method of assembling a modular swimming pool of claim 17 , wherein the port is a skimmer port.

19. The method of assembling a modular swimming pool of claim 17 , wherein the port is a channel configured to be connected to external piping.

20. A method of assembling a modular swimming pool, the modular swimming pool including a precast base unit having an upper surface, a precast riser unit secured to the base, the precast riser unit including at least two connecting sidewall portions, having at least one internal surface, the upper surface of the precast base unit and the at least one internal surface of defining an interior of the pool when the precast base unit and the precast riser unit are secured together, the method comprising:

delivering the precast base unit and the precast riser unit to an installation site as separate precast components;

positioning the precast base unit at the installation site; and

subsequently securing the precast riser unit to the precast base unit so that an upper surface of the precast base unit and at least one internal surface of the precast riser unit define the interior of the modular swimming pool.