UFC 3-120-01
FEBRUARY 6 2003
12.11.6.2. Mounting hardware for steel signs shall be galvanized steel in accordance with
ASTM-A307 and ASTM-A153.
12.11.7. Magnetic Sheeting. Flexible magnetic sheeting for changeable letter signs shall be of
best commercial quality available and shall have a minimum thickness of .030 inches.
12.12. Foundations. Concrete foundations shall withstand all wind, water, ice and similar forces.
The depth of the footings shown in the drawings may be modified to suit local conditions. Post
sleeve or base plate mounts on the foundation may be used when needed.
12.12.1. Base-mounted Signs. Base-mounted signs, such as Sign Types A1, A2 and F1 shall be
mounted on a "T" type footing with steel rod reinforcements as shown in Figure 12.1. All
exposed concrete shall be air entrained, vibrated and finished smooth. All concrete shall be
poured at 20.7 Mpa (3,000 psi) with a 28 day cure.
12.12.2. Freestanding Signs. Freestanding signs, such as the building identification sign, shall be
mounted in drilled hole concrete footings as shown in the drawings. All foundations shall be
flush with the ground level. All concrete shall be poured at 20.7 Mpa (3,000 psi) with a 28 day
cure.
12.13. Reproduction Processes.
12.13.1. Die-cutting: Letter forms and graphics die-cut from vinyl and reflective sheeting shall be
of the best commercial quality available. Die-cutting shall be executed in such a manner that
edges and corners of finished letter forms and graphics are true and clean. Letter forms and
graphics with rounded positive or negative corners, or nicked, cut or ragged edges shall not be
used. All applied die-cut letters and graphics shall be permanently affixed to sign surfaces in
such a manner that all letter surface and edge areas are tightly and evenly adhered to the sign
surface.
12.13.2. Silk-screening. All silk screening specified shall be executed from photo-screens
prepared from typesetters' reproductions of the copy specified. Typesetters' reproductions shall
be no smaller than 50 percent of the actual size specified. The Helvetica medium and Helvetica
regular letter forms shall match the samples shown in Figures 2.1. and 2.2 of this pamphlet.
Graphics shall be assembled as mechanical art in a professional manner prior to preparation of
photo screens. No hand-cut screens shall be used.
12.13.2.1. Graphics may be silk-screened directly onto the sign face or silk screened onto
vinyl or reflective sheeting and die-cut for later application to the sign face.
12.13.2.2. All silk-screen printing shall be executed in such a manner that all edges and
corners of the finished graphics are true and clean. Graphics with rounded positive or
negative corners shall not be used.
235
Previous Page
