This rebar cage was designed for easy transport/rigging as a monolithic structure below grade... with match plates for attaching several sign components above grade.

When the primary sign structure is aluminum angle and sheet, an additional sub-frame is designed for attachment to the structural steel members. 

Installation of reverse-lit, pin-mount channel letters and logo over an active entrance. Ground personnel controlled foot traffic and staged components, while installers on the inside made final hardware and electrical connections.