Low profile nestable leaching chamber having increased water storage volume

1. A molded plastic chamber for collecting, receiving, detaining, or dispersing water when buried, the chamber comprising:

a support pillar, wherein the support pillar includes a pillar wall which defines a pillar cavity;

a plurality of chamber ends including a chamber first end and a chamber second end separated along a lengthwise direction by a chamber length;

a plurality of chamber side walls including a first chamber side wall and a second chamber side wall separated along a widthwise direction by a chamber width which is perpendicular to the lengthwise direction;

a chamber top, wherein the chamber top includes a centering tab, a retaining tab and a pillar opening and wherein the chamber top, plurality of chamber ends and plurality of chamber side walls define a chamber internal cavity, and

wherein the support pillar is associated with the chamber top such that the pillar wall extends downwardly from the chamber top and such that the pillar opening is communicated with the pillar cavity; and

a pillar cover, wherein the pillar cover defines a cover opening and is movably associated with the chamber top to be configurable between a first configuration and a second configuration,

wherein when in the first configuration, the cover opening is communicated with the pillar cavity, and

wherein when in the second configuration, the pillar opening is covered by the pillar cover.

2. The chamber of claim 1 , wherein each of the first chamber side wall and second chamber side wall includes a plurality of peak corrugations which run transverse to the lengthwise direction of the chamber.

3. The chamber of claim 2 , further including a plurality of cover positioning tabs, wherein the plurality of cover positioning tabs is are associated with the chamber top to be and located on the peak corrugations on either side of the chamber top.

4. The chamber of claim 1 , wherein each of the first chamber side wall and second chamber side wall includes a plurality of valley corrugations which run transverse to the lengthwise direction of the chamber.

5. The chamber of claim 1 , further including a plurality of cover positioning tabs, wherein the plurality of cover positioning tabs is are associated with the chamber top and located on either side of the chamber top.

6. The chamber of claim 1 , wherein the pillar cover includes a centering slot, a retaining slot and a cover tab cavity, wherein the pillar cover is associated with the chamber top such that,

when the pillar cover is in the first configuration, the retaining tab is located within the retaining slot, and

when the pillar cover is in the second configuration, the centering tab is located within the centering slot and the retaining tab is located within the cover tab cavity.

7. The chamber of claim 1 , wherein the pillar cover is slidably movable between the chamber first end and the chamber second end.

8. The chamber of claim 1 , wherein the retaining tab is resiliently compressible between a compressed configuration and a decompressed configuration.

9. The chamber of claim 8 ,

wherein when the pillar cover is configured in either the first configuration or the second configuration, the retaining tab is in the decompressed configuration, and

wherein when the pillar cover is being configured between the first configuration and the second configuration, the retaining tab is compressed by the pillar cover to be in the compressed configuration.

10. A plastic chamber for collecting, receiving, detaining, or dispersing water when buried, the chamber comprising:

at least one support pillar, wherein the at least one support pillar includes at least one pillar wall which defines at least one pillar cavity;

a plurality of chamber ends;

a plurality of chamber side walls;

a chamber top, wherein the chamber top includes at least one pillar opening and wherein the chamber top, plurality of chamber ends and plurality of chamber side walls define a chamber internal cavity, and

wherein the at least one support pillar extends downwardly from the chamber top, and wherein the at least one pillar opening is communicated with the at least one pillar cavity; and

a pillar cover, wherein the pillar cover defines at least one cover opening and is movably associated with the chamber top to be configurable between a first configuration and a second configuration, wherein when in the first configuration the at least one pillar cavity is associated with the at least one cover opening to be uncovered, and wherein when in the second configuration, the at least one pillar opening is covered by the pillar cover.

11. The chamber of claim 10 , wherein each of the plurality of chamber side walls includes a plurality of peak corrugations and valley corrugations which run transverse to a lengthwise direction of the chamber.

12. The chamber of claim 11 , further including a plurality of cover positioning tabs, wherein the plurality of cover positioning tabs is are associated with the chamber top and located on the peak corrugations on either side of the chamber top.

13. The chamber of claim 10 , further including a plurality of cover positioning tabs, wherein the plurality of cover positioning tabs are associated with the chamber top and located on either side of the chamber top.

14. The chamber of claim 10 , further comprising a centering tab located adjacent a first chamber end of the plurality of chamber ends and a retaining tab located adjacent a second chamber end of the plurality of chamber ends.

15. The chamber of claim 14 , wherein the pillar cover includes a centering slot, a retaining slot and a cover tab cavity, wherein

when the pillar cover is in the first configuration, the retaining tab is located within the retaining slot, and

when the pillar cover is in the second configuration, the centering tab is associated with the centering slot and the retaining tab is located within the cover tab cavity.

16. The chamber of claim 10 , wherein the pillar cover is slidably movable between a first chamber end of the plurality of chamber ends and a second chamber end of the plurality of chamber ends.

17. The chamber of claim 10 , further including a retaining tab located adjacent a second chamber end of the plurality of chamber ends, wherein the retaining tab is resiliently compressible between a compressed configuration and a decompressed configuration.

18. The chamber of claim 17 ,

wherein when the pillar cover is configured in either the first configuration or the second configuration, the retaining tab is in the decompressed configuration, and

wherein when the pillar cover is being configured between the first configuration and the second configuration, the retaining tab is compressed by the pillar cover to be in the compressed configuration.

19. A method of implementing a leaching chamber wherein the leaching chamber includes at least one hollow support pillar, wherein the at least one hollow support pillar includes at least one pillar wall which defines at least one pillar cavity;

a plurality of chamber ends;

a plurality of chamber side walls;

a chamber top, wherein the chamber top includes at least one pillar opening and wherein the chamber top, plurality of chamber ends and plurality of chamber side walls define a chamber internal cavity, and

wherein the at least one support pillar extends downwardly from the chamber top, and wherein the at least one pillar opening is communicated with the at least one pillar cavity; and

a pillar cover, wherein the pillar cover defines at least one cover opening and is movably associated with the chamber top to be configurable between a first configuration and a second configuration, wherein when in the first configuration the at least one pillar cavity is associated with the at least one cover opening to be uncovered, and wherein when in the second configuration, the at least one pillar opening is covered by the pillar cover, the method comprising:

obtaining the leaching chamber having the pillar cover, wherein the pillar cover is configured in the first configuration;

nesting a like chamber with the leaching chamber such that the at least one hollow support pillar of the like chamber is located within the pillar cavity of the leaching chamber;

transporting and/or storing the leaching chamber and nested like chamber;

denesting the leaching chamber and the like chamber;

configuring the pillar cover between the first configuration and the second configuration; and

locating the leaching chamber and/or like chamber within a hole and covering the leaching chamber and/or like chamber with soil.