A close-up view of a stack of prefabricated geodesic dome parts.

Prefab – Rebar

Prefabrication rebar photo number 00.

Rebar cages can take longer than expected to fabricate, so it’s best to construct them before any concrete work.

Prefabrication rebar photo number 01.

Cut the rebar to size. Using the right saw makes this task easier. The most affordable option is to use an angle grinder with a metal cut-off disc.

Prefabrication rebar photo number 02.

A stack of rebar cut to length. Minor surface rust is not a concern, as it will stop rusting once encased in the concrete’s alkaline environment.

Prefabrication rebar photo number 03.

Use a rebar tying tool to attach the rebar lengths to the rebar rings. It’s simple and cheap, but very time-consuming.

Prefabrication rebar photo number 04.

Assemble the rebar cages.

Prefabrication rebar photo number 05.

Detail shot showing what the tied rebar looks like.

Prefabrication rebar photo number 06.

A completed center pier rebar cage. The rebar cages for the outer piers require only 4 sticks each, as opposed to the 8 shown here.

Prefabrication rebar photo number 07.

Congratulations on completing the prefabrication of the rebar! Notice that the tops of all the rebar cages have doubled-up rebar rings, as specified in the drawings and often required by code.

Next Step