Adapter ring for on-site waste treatment or drainage systems
An adapter for a tank, having a bottom with one or more adhesive-receiving channels formed therein, an inner wall, structure for supporting a riser component on the adapter, and wall reinforcement structure. The adapter is particularly suited to providing pre-cast concrete tank lids with structural, interengaging support for a column of stackable riser components to form a passageway to facilitate access to the tank from a higher elevation.
1. An adapter for use on a lid of a tank of an on-site waste treatment or drainage system, comprising:
a bottom having an upper surface and a lower surface and defining a central opening, the lower surface generally defining a first plane and adapted to abut a planar surface on the lid of the tank, the upper surface generally defining a second plane;
one or more upwardly extending, downwardly open channels formed in the bottom and operable to receive adhesive, the channels extending into the bottom from the first plane and terminating between the first plane and the second plane;
an inner wall extending upward of the upper surface and surrounding the opening;
an outer wall extending upward of the upper surface; and
one or more reinforcement struts extending from the inner wall to at least one of the outer wall and the upper surface of the bottom,
wherein each of the one or more channels is between an innermost surface of the inner wall and an outermost surface of the outer wall.
2. The adapter of claim 1 , further including one or more riser leg support surfaces provided on an interior of the inner wall.
3. The adapter of claim 2 , wherein each of the one or more riser leg support surfaces is a top of an inner rib member provided on the interior of the inner wall.
4. The adapter of claim 3 , wherein each of the inner rib members is vertically oriented.
5. The adapter of claim 4 , wherein each of the inner rib members extends from the bottom to a distance from a top of the inner wall intermediate the top of the inner wall and the bottom.
6. The adapter of claim 1 , further comprising a plurality of reinforcement wall members extending between the inner wall and the outer wall.
7. The adapter of claim 6 , wherein the reinforcement wall members extend substantially to a height of the outer wall.
8. The adapter of claim 7 , wherein three or more of the reinforcement wall members include a stacking fin thereon bringing the height of said reinforcement wall members including the stacking fin substantially to a height of the inner wall, whereby another adapter may be stacked on the adapter.
9. The adapter of claim 8 , further including a pin extending vertically upwardly from at least one of the stacking fins.
10. The adapter of claim 9 , further including a pin-receiving recess in the bottom, said pin-receiving recess sized to securely receive a pin extending vertically upwardly from a stacking fin of a next-lower like adapter when stacked thereon.
11. The adapter of claim 1 , wherein the inner wall has a greater height than the outer wall.
12. The adapter of claim 1 , further comprising screw bosses disposed exteriorly of the inner wall.
13. The adapter of claim 12 , wherein the screw bosses are disposed in at least two of the reinforcement struts.
14. The adapter of claim 1 , wherein each of the one or more upwardly extending, downwardly open channels has a ratio of width-to-depth of about 2:1.
15. The adapter of claim 14 wherein the width is about 0.1″ and the depth is about 0.05″.
16. The adapter of claim 1 wherein each of the one or more upwardly extending, downwardly open channels has a ratio of width-to-depth of about 1:1.
17. The adapter of claim 16 wherein the width is about 0.1″ and the depth is about 0.1″.
18. The adapter of claim 16 wherein the width is about 0.05″ and the depth is about 0.05″.
19. The adapter of claim 1 , wherein each of the one or more upwardly extending, downwardly open channels has a width in the range of about 0.05″ to about 0.1″.
20. The adapter of claim 1 , wherein each of the one or more upwardly extending, downwardly open channels has a depth in the range of about 0.05″ to about 0.1″.