Client: City Sign, Wilmington, DE
Date: August 1, 2017
Steinle Construction Engineers was contracted by American Signcrafters, New York, to design a sign support structure for a new sign to be erected on top of the 22-story Brandywine Building in Wilmington, Delaware. An extremely accelerated completion schedule was required, and with SCE’s help the sign was fabricated, permitted, installed and lit within 2 months.
This type of sign requires significant structural support to withstand hurricane force winds. To accommodate the focused loads created by the sign support system, the sign would also require additional bracing and strengthening of the roof structure. Fortunately, the new Citi sign was replacing the recently removed DuPont sign and some of the required support structure was already installed. SCE’s Structural Engineers met at the site with American Signcrafters’ and building representatives where they reviewed existing conditions and obtained original building structural drawings. The analysis confirmed the new sign could be supported by the remaining structural frame. SCE recommended RC Fabricators be contracted to fabricate and erect the steel support structure. With American Signcrafters and RC Fabricators, SCE designed a vertical assembly of structural steel tubes to hold the new sign. This design would allow the construction and preassembly of the 23 feet high by 28 feet wide, LED-lighted sign at American Signcrafters’ offsite facility, while RC Fabricators assembled the support structure.