Abstract: A concrete forming system includes telescoping jacks, bottom chords and top chords. The bottom and top chords separate the telescoping jacks into spaced, parallel rows. Diagonal struts extend between the bottom chords and the top chords within each row. Cross braces extend between corresponding telescoping jacks of adjacent rows. Joists are supported on the top chords and/or on beams supported by the telescoping jacks, and in turn support forming members. The component parts of the system may be used to make flying truss forms, flying pan forms, structural beam forms, rolling deck scaffold forms, column hung forms and wall forms.