Modular construction elements

Claim 1

An elongate modular construction element for assembly with a plurality of like elements to form a decking structure, said element being in the nature of a hollow plank comprising spaced top and bottom walls interconnected by opposed side walls, first connecting means projecting outwardly beyond one of said side walls of the plank, second connecting means complementary to said first connecting means being formed at the opposite side of the plank whereby two such planks may be connected together in side by side relation, the side walls of each plank converging in a direction towards said bottom wall so as to be adapted to define between adjacent interconnected planks a void of increasing width from the top to the bottom thereof, said connecting means being adapted to permit limited sliding movement of adjacent planks relative to one another in a direction transverse to the lengths of the planks and limited angular movement about an axis extending parallel to the lengths thereof whereby the top walls of adjacent planks may be angularly inclined relative to one another, said connecting means being located adjacent the bottom wall of and extending continuously along the plank from one end thereof to the other, and serving, when adjacent planks are connected together, to close off the bottom of said void.