Concrete form systems, devices, and related methods

A concrete form system, comprising:

• a concrete form comprising:
• at least one support column disposed at a lower portion of the concrete form, the at least one support column comprising an aperture extending therethrough and a channel in a lower end thereof, the aperture opening into the channel;
• and
• first and second connection branches disposed at an upper portion of the concrete form, the first and second connection branches comprising connection features configured to engage corresponding connection features of second and first connection branches, respectively, of other concrete forms, the first and second connection branches at least partially forming one or more channels therebetween, the aperture in the at least one support column opening into the one or more channels at least partially formed by the first and second connection branches;
• and
• a rebar tree comprising a rebar mounting assembly, a shaft, and a connection element, wherein:
• the shaft is configured to extend through the aperture in the at least one support column to or into the one or more channels at least partially formed by the first and second connection branches and the channel in the lower end of the at least one support column;
• the rebar mounting assembly is configured to hold one or more pieces of rebar in one or more desired positions, the rebar mounting assembly being configured to be at least partially disposed within at least one of the one or more channels at least partially formed by the first and second connection branches, the rebar mounting assembly being mountable on a first end of the shaft;
• and
• the connection element is positionable at least partially within the channel in the lower end of the at least one support column and connectable to the shaft, wherein the shaft is configured to secure the connection element and the rebar mounting assembly together and hold the rebar mounting assembly and the connection element within their respective channels.