Apparatuses and methods associated with creating a form to construct a concrete structure (e.g., a concrete building). In embodiments, an apparatus may comprise a number of forming system components, including but are not limited to a plurality of fixed or adjustable posts; a plurality of fixed or adjustable roof struts, a plurality of fixed or extensible frames; and/or a plurality of mounts. The fixed/adjustable posts, the fixed/adjustable roof struts, and the fixed/extensible frames are selectively and adjustably coupled together to create a form of selected dimensions to construct the concrete structure/building on site with reduced number of pours, e.g., a single pour. Other embodiments may be disclosed or claimed.