The present invention provides a cold formed joist that can be used in a variety of construction applications. The apparatus also includes a modular distributor unit that is distributed amongst the modules for distributing the blank sheet material to the available modules and, if required, for bringing together printed sheet material and for sorting the printed sheet material. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. When the button section is pressed and is lowered to a position at which the fixed contact and the movable contact are closed, the bottom surface is in an approximately horizontal state and presses the movable section.