Abstract: The invention provides a form for use in a concrete wall forming system to define wall sections meeting an intersection region. The form comprises: panels arranged in a spaced relationship to each other to define there between a volume for each wall section and an intersection volume for the intersection region; and a series of ties forming a stack of ties. Each tie has an exterior frame having at least three sides, corners where two adjacent sides meet and a web member spanning generally across an interior volume within the frame. Each tie is located in the intersection region with two sides spanning between opposing sides of opposing panels and has each corner embedded within a panel. The form may be insulated.