Fabric stretched around any edge of a sign structure shall be protected from any sharp edge that may cut or tear the fabric. The perimeter of the fabric located on the front or rear of a sign structure shall be secured as required by Section H114.3, except that the "J" hooks may be secured directly to the sign structure.
Opposing ends of a fabric sign stretched around the edges of a sign structure may be secured to each other by means of mechanical tensioning devices behind the sign structure, provided that the open ends for the "S" hooks shall be closed with safety clips. Spring snaps may be used in lieu of "S" hooks. The mechanical tensioning devices shall be fastened to safety wires, placed through the holes in the load spreader bars or grommets, to prevent the devices from falling in the event of loss of tension.
The length of the fabric or safety wire perpendicular to any edge of the sign structure shall be dimensioned such that in the event of failure of any part of the flexible sign structure, no load spreader bars, mechanical tensioning devices, clamps, or wires will strike any nearby doors, windows, vents, chimneys, grilles, skylights, light fixtures, decorations or other wall appurtenances, or mechanical equipment, nor shall any load spreader bar fall within 10 feet (3048 mm) of grade.