Convertible floor panel assembly, composite floor structure, and method for filling an orchestra opening adjacent a theater stage

1. A composite floor structure, comprising:

a truss assembly incorporating an arrangement of open-web beams; and

a convertible floor panel assembly carried on said truss assembly, and comprising:

(a) a metal wire mesh subfloor;

(b) a polymer deck selectively overlying said wire mesh subfloor;

(c) a plurality of alignment heads projecting from an underside of said polymer deck, and designed to extend through respective mesh openings defined by said wire mesh subfloor; and

(d) a plurality of panel retainers engaging respective alignment heads, and adapted for removably attaching said wire mesh subfloor and said polymer deck together, such that said floor panel assembly is convertible by selectively attaching and removing said polymer deck to and from said wire mesh subfloor, whereby:

(i) when said polymer deck is removed from said wire mesh subfloor to expose said wire mesh subfloor, said floor panel assembly comprises a substantially open-surface, walkable, sound permeable safety structure; and

(ii) when said polymer deck is attached to said wire mesh subfloor to cover said wire mesh subfloor, said floor panel assembly comprises a continuous solid-surface structure for increased floor load capacity.

2. The composite floor structure according to claim 1 , wherein said alignment head is integrally formed with said polymer deck, and defines an internally-threaded fastener hole.

3. The composite floor structure according to claim 2 , wherein said panel retainer comprises an externally-threaded fastener end adapted for inserting into the threaded fastener hole of said alignment head, and a knurled hand knob opposite said externally-threaded fastener end.

4. The composite floor structure according to claim 3 , and comprising an enlarged-diameter washer having a central opening for receiving the externally-threaded fastener end of said panel retainer, such that said wire mesh subfloor resides between said washer and said polymer deck.

5. The composite floor structure according to claim 4 , wherein said enlarged-diameter washer defines an annular panel-side recess designed for receiving the alignment head of said polymer panel.

6. The composite floor structure according to claim 5 , and comprising a fabric backing located on a panel side of said enlarged-diameter washer.

7. The composite floor structure according to claim 1 , wherein said wire mesh subfloor has a live load capacity of at least about 100 pounds per square foot.

8. The composite floor structure according to claim 1 , wherein said wire mesh subfloor and polymer deck have a combined live load capacity of at least about 150 pounds per square foot.

9. A method for filling an orchestral opening adjacent a theater stage, said method comprising:

installing a plurality of convertible floor panel assemblies over the orchestral opening, each floor panel assembly comprising:

(a) a metal wire mesh subfloor;

(b) a polymer deck selectively overlying said wire mesh subfloor;

(c) a plurality of alignment heads projecting from an underside of said polymer deck, and designed to extend through respective mesh openings defined by said wire mesh subfloor; and

(d) a plurality of panel retainers engaging respective alignment heads, and adapted for removably attaching said wire mesh subfloor and said polymer deck together, such that said floor panel assembly is convertible by selectively attaching and removing said polymer deck to and from said wire mesh subfloor, whereby:

(i) when said polymer deck is removed from said wire mesh subfloor to expose said wire mesh subfloor, said floor panel assembly comprises a substantially open-surface, walkable, sound permeable safety structure; and

(ii) when said polymer deck is attached to said wire mesh subfloor to cover said wire mesh subfloor, said floor panel assembly comprises a continuous solid-surface structure for increased floor load capacity.

10. A composite floor structure, comprising:

a truss assembly incorporating an arrangement of open-web beams; and

a convertible floor panel assembly carried on said truss assembly, and comprising:

a metal wire mesh subfloor;

a polymer deck selectively overlying said wire mesh subfloor;

a plurality of alignment heads projecting from an underside of said polymer deck, and designed to extend through respective mesh openings defined by said wire mesh subfloor; and

a plurality of panel retainers engaging respective alignment heads, and adapted for removably attaching said wire mesh subfloor and said polymer deck together, such that said floor panel assembly is convertible by selectively attaching and removing said polymer deck to and from said wire mesh subfloor, whereby:

(i) when said polymer deck is removed from said wire mesh subfloor to expose said wire mesh subfloor, said floor panel assembly comprises a substantially open-surface, walkable, sound permeable safety structure; and

(ii) when said polymer deck is attached to said wire mesh subfloor to cover said wire mesh subfloor, said floor panel assembly comprises a continuous solid-surface structure for increased floor load capacity, and

wherein each panel retainer comprises a male fastener end adapted for mating with a complementary fastener opening formed with said alignment head;

a plurality of enlarged-diameter washers, each washer defining a central opening for receiving the male fastener end of said panel retainer, such that said wire mesh subfloor resides between said washer and said polymer deck.