Techno-posts is what we use to support the decks out of the ground. The generic name is helical piers which screw into the ground. The goal is to screw the post into the ground until sufficient depth and a specific torque is achieved. Benefits are no soil to dispose of since a hole is not required. Inspectors only require a report from the installer on completion therefore no waiting for a hole and depth inspection. You can build on the support pier immediately not necessary to wait for concrete to dry. Their are a couple different shaft sizes which are chosen for specific loads for instance if there are upper decks or roof over the deck.
Click the button for the Techno-post demonstration.