Abstract: A concrete form system for receiving concrete includes a plurality of interlocking form panels having opposite side ends, and which capable of being selectively arranged in series as a wall of a form configured to receive concrete. A plurality of attachments are each disposed between adjacent form panels, and vertically engage the side ends of adjacent form panels to interlock the side ends of the adjacent form panels to resist lateral separation of the adjacent form panels. The attachments an include one or more channels or engagement walls, and an insert received withing the channels or engaging the engagement walls. Ties or brackets can extend between parallel, spaced-apart form panels to maintain a predetermined, spaced-apart distance. A gauge bar can moveably extend into the form to indicate a fill level.

Abstract: A concrete form system for receiving concrete includes a plurality of interlocking form panels having opposite side ends, and which capable of being selectively arranged in series as a wall of a form configured to receive concrete. A plurality of attachments are each disposed between adjacent form panels, and vertically engage the side ends of adjacent form panels to interlock the side ends of the adjacent form panels to resist lateral separation of the adjacent form panels. The attachments an include one or more channels or engagement walls, and an insert received withing the channels or engaging the engagement walls. Ties or brackets can extend between parallel, spaced-apart form panels to maintain a predetermined, spaced-apart distance. A gauge bar can moveably extend into the form to indicate a fill level.