Evaluation of Dual Support, Triangular Slip-Base Sign Installations

摘要

Large sign panels have long used extruded aluminum panels as a signage substrate. See Texas Department of Transportation (TxDOT) Sign Mounting Detail (SMD) through SMD. The aluminum panels are extruded with wind beams integral to the sign panel and have typically been mounted on hot rolled W-shape supports with 4-bolt uni-directional slip bases. The supports incorporate fuse plates just below the sign panel that serve as hinge points when errant vehicles impact the supports.