36 C.F.R. 7.96(g)
(x) The following are prohibited in Lafayette Park:
(A) The erection, placement or use of structures of any kind except for the following:
(1) Structures that are being handcarried are allowed.
(2) When one hundred (100) or more persons are participating in a demonstration in the Park, a temporary speaker's platform as is reasonably required to serve the demonstration participants is allowed as long as such platform is being erected, dismantled or used, provided that only one speaker's platform is allowed per demonstration group, and provided further that such speaker's platform is authorized by a permit issued pursuant to paragraph (g) of this section.
(3) When less than one hundred (100) persons are participating in a demonstration in the Park, a temporary "soapbox" speaker's platform is allowed as long as such platform is being erected, dismantled or used, providing that only one speaker's platform is allowed per demonstrating group, and provided further that the speaker's platform is no larger than three (3) feet in length, three (3) feet in width, and three (3) feet in height, and provided further that such speaker's platform is authorized by a permit issued pursuant to paragraph (g) of this section.
(4) For the purpose of this section, the term "structure" includes props and displays, such as coffins, crates, crosses, theaters, cages, and statues; furniture and furnishings, such as desks, chairs, tables, bookcases, cabinets, platforms, podiums and lecterns; shelters, such as tents, boxes and other enclosures; wagons and carts; and all other similar types of property which might tend to harm park resources including aesthetic interests. Provided however that the term "structure" does not include signs; blcycles, baby carriages and baby strollers lawfully in the Park that are temporarily placed in, or are being moved across the Park, and that are attended at all times whlle in the Park (the term "attended" is defined as an indivldual being within three (3) feet of his or her bicycle, baby carriage or baby stroller); and wheelchairs and other devices for the handicapped in use by handicapped persons.
(B) The use of signs except for the following:
(1) Hand-carried signs are allowed regardless of size.
(2) Signs that are not being handcarried and that are no larger than four (4) feet in length, four (4) feet in width and one-quarter (1/4) inch in thickness (excluslve of braces that are reasonably required to meet support and safety requirements and that are not used so as to form an enclosure of two (2) or more sides) may be used in Lafayette Park, provided that no individual
may have more than two (2) such signs in the Park at any one time, and provided further that such signs must be attended at all times (the term "attended' is defined as an individual being within three (3) feet of his or her sign(s)), and provided further that such signs may not be elevated in a manner so as to exceed a height of six (6) feet above the ground at their highest point, may not be arranged or combined in a manner so as to exceed the size limitations set forth in this paragraph, and may not be arranged in such a fashion as to form an enclosure of
two (2) or more sides. For example, under this provision, two four-feet by four-feet signs may not be combined so as to create a sign eight feet long and four feet wide, and three such signs may not be arranged to create a sign four feet long and twelve feet wlde, and two or more signs of any size may not be leaned or otherwise placed together so as to form an enclosure of two or more sides, etc.