Portland Land Use Code

Citation: Portland Land Use Code
Parent Document: Portland Land Use Code
Jurisdiction: Portland (municipal)
Original Source: https://www.portlandmaine.gov/asset/a5dcd1dc-4117-40b3-b3da-74a56919e14b ↗

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changing messages provided that each 19.6.5 Structure and installation
message is displayed for no less than 30 A. Authority. The construction of signs shall be
seconds. enforced and administered by the Building
3. Electronic message signs must be Authority. All signs and advertising structures
equipped with photocell technology to must be designed to comply with the
control and vary the intensity of light provisions of this article and applicable
output depending on the amount of provisions of Chapter 6 of the City of Portland
ambient light that is present to prevent Code of Ordinances and constructed to
overly bright luminance at night. withstand wind loads, dead loads, and lateral
Automatic controls must limit night forces.
luminance to a maximum of 100 nits when B. Electrical features. Where electrical service is
the display is set to show maximum provided to freestanding signs or landscape
brightness in 100 percent full white mode. wall signs, all such electrical service must be
4. The applicant shall provide a written placed be underground and concealed.
certification from the sign manufacturer Electrical service to building-mounted signs,
that the night time luminance has been including conduit, housings, and wire, must be
factory pre-set not to exceed 100 nits as concealed or, when necessary, painted to
described in (3) above, and that this setting match the surface of the structure upon which
is protected from end-user modification by they are mounted. An electrical permit shall be
password-protected software or other issued prior to installation of any new signs
method as deemed appropriate by the requiring electrical service.
Building Authority. C. Raceway cabinets. Raceway cabinets, as
5. Electronic message signs must be turned illustrated in Figure 19-B, shall only be used in
off daily at the close of business or 10 p.m., building-mounted signs when access to the wall
whichever occurs first. behind the sign is not feasible, shall not extend
in width and height beyond the area of the sign,
19.6.4 Changeable sign copy and shall match the color of the building to
Changeable sign copy must comply with the which it is attached. Where a raceway cabinet
following standards: provides a contrast background to sign copy,
A. Maximum area. The maximum area of the colored area is counted in the total
changeable sign copy shall be limited to 50% of allowable sign area allowed for the site or
the total sign area, except for marquee signs. business. A raceway cabinet is not a cabinet sign.
This does not apply to any signs required by law.
B. Sign design. The changeable sign copy must be
an integral part of a permanent building-
mounted or freestanding sign.
C. Illumination. Changeable sign copy may be
non-illuminated or internally-illuminated. FIGURE 19-B: RACEWAY CABINET EXAMPLES CITY OF PORTLAND LAND USE CODE | 19-11 SIGNS

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