The construction of this is known familiarly as 'basket weave'. In reality it is a counterbatten configuration, comprising at least three layers of highly flexible southern US softwood battens, placed on top of each other at right angles. The intermediate layer acts as a spring to the top layer which is laid at the centre of the span formed by the intermediate layer over the bottom layer.
Theoretically the more intermediate layers incorporated in a basket weave floor, the more flexible it becomes, but the principle of diminishing returns applies and in reality the extra expense and thickness outweigh the practicality.
In the Harlequin WoodSpring system, shock absorption and energy return are enhanced by elastomer pads attached to the underside of the bottom layer.
On this structure are installed two layers of flexible panels (typically plywood and MDF), which support the Harlequin dance floor.
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