A BUILDING ELEMENT AND A CONSTRUCTION METHOD USING SUCH AN ELEMENT
A lightweight building element is moulded in the form of a three or four sided shell defining an interior space for receiving a filler material. The element is trapezoidal in at least one elevation so as to be stackable with a pluralityof identical elements for ease of transportation. The method of the invention involves laying the elements in courses and then filling the elements from above with a loose relatively heavy filler material such as gravel or sand to form a solid structure.