Polymer membrane-lined pool penetration assemblies, wall structures and related methods

1 . A penetration assembly for a polymer membrane-lined pool, the penetration assembly comprising:

a faceplate having a thermoplastic weldment surface integrally formed with the faceplate and compositionally compatible for heat welding to a polymer membrane liner, the weldment surface being heat welded to the polymer membrane liner to define a continuous plastic weld bead circumscribing a penetration area having a recess extending away from the weldment surface;

an earth anchor connected to the recess and extending away therefrom; and

a retention perimeter extending away from the weldment surface;

wherein the faceplate is formed of a polymer material; and

wherein the earth anchor is connected to the recess via a sealed ball joint seated in an integrally molded spherical seat of the recess, the ball joint being enclosed within the recess volume to maintain watertightness.

2 . The penetration assembly of claim 1 , further comprising at least one of:

an eyebolt attached in the recess;

a dosing nozzle secured in the recess;

an ultrasonic transducer secured in the recess; and

a water line connection formed.

3 . The penetration assembly of claim 2 , further comprising a grate covering the recess.

4 . The penetration assembly of claim 2 , further comprising the dosing nozzle secured in the recess.

5 . The penetration assembly of claim 4 , wherein the recess includes an angled sidewall through which the dosing nozzle is connected and directed at an angle towards a grate covering the recess.

6 . The penetration assembly of claim 4 , further comprising an adapter located within the recess, the adapter securing the dosing nozzle directed directly at a grate covering the recess.

7 . The penetration assembly of claim 1 , wherein the retention perimeter includes an outwardly sloping section at an acute angle relative to the weldment surface extending away from the weldment surface and a peripheral lip extending away from a distal periphery of the sloping section approximately parallel to the weldment surface.

8 . The penetration assembly of claim 7 , wherein the penetration area includes a recess extending away from the weldment surface and the penetration assembly further comprises a polymer water stop integrally molded with and extending from a backside of the faceplate, the water stop projecting rearward from the recess so as to interrupt fluid flow paths behind the faceplate.

9 . The penetration assembly of claim 1 , wherein the penetration area includes a recess extending away from the weldment surface, the recess being formed as a unitary polymer piece with the faceplate.

10 . The penetration assembly of claim 9 , wherein the retention perimeter is formed as a unitary polymer piece with the faceplate and the recess.

11 . The penetration assembly of claim 9 , wherein the polymer material comprises a thermoplastic compatible with heat welding to the polymer membrane liner.

12 . A polymer membrane-lined pool comprising:

a polymer membrane lying on an underlying surface and having at least one penetration therethrough; and

a penetration assembly having a polymer faceplate with a thermoplastic weldment surface integrally formed with the faceplate and compositionally compatible for heat welding to the polymer membrane liner, the weldment surface being heat welded to the polymer membrane liner to define a continuous plastic weld bead completely encircling a penetration area and a retention perimeter extending away from the weldment surface, the weldment surface being located on a grade of the polymer membrane at a location of the at least one penetration, the at least one penetration being located over the penetration area and a portion of the polymer membrane surrounding the penetration being thermoplastically welded to the weldment surface forming a complete watertight seal thereabout, the retention perimeter being embedded below the grade in the underlying surface;

wherein the underlying surface is earth and the penetration assembly includes an earth anchor connected to the faceplate by a sealed ball joint seated in an integrally molded spherical seat of the recess, the ball joint being enclosed within the recess volume to maintain watertightness.

13 . The polymer membrane-lined pool of claim 12 , wherein the underlying surface is concrete and the retention perimeter is embedded in the concrete.

14 . The polymer membrane-lined pool of claim 12 , wherein the earth anchor is connected to the faceplate by the sealed ball joint, the sealed ball joint being enclosed within the recess and configured to allow angular adjustment of the earth anchor without compromising the watertight weldment interface.

15 . The polymer membrane-lined pool of claim 12 , wherein the penetration area includes a recess extending away from the weldment surface and the penetration assembly further includes at least one of:

an eyebolt attached in the recess;

a dosing nozzle secured in the recess;

an ultrasonic transducer secured in the recess; and

a water line connection formed.

16 . A penetration assembly for a polymer membrane-lined pool, the penetration assembly comprising:

a faceplate having a thermoplastic weldment surface integrally formed with the faceplate and compositionally compatible for heat welding to a polymer membrane liner, the weldment surface being heat welded to the polymer membrane liner to define a continuous plastic weld bead circumscribing a penetration area; and

a retention perimeter extending away from the weldment surface;

wherein the faceplate is formed of a polymer material; and

wherein the retention perimeter includes an outwardly sloping section at an acute angle relative to the weldment surface extending away from the weldment surface and a peripheral lip extending away from a distal periphery of the sloping section approximately parallel to the weldment surface.