Abstract: A bollard comprising a series of at least two nested, inverted U-shaped forms of decreasing height set around a common vertical axis. Each U-shaped form has an upper transverse portion and two parallel, vertical legs extending from the upper transverse portion. The bollard further comprises at least one center joining plate located below the upper transverse portions of the forms and being substantially perpendicular to the forms, for joining the U-shaped forms together as a unit, the forms being fastened to the at least one center joining plate. The bollard can also include an anchor plate attached to the forms at or adjacent their bottom, for anchoring the forms to a support surface. The bollard can be used in a system comprising at least one other bollard and/or at least one site amenity (for example, seating, lighting, signage, a shelter, a trash can receptacle, and an ash urn), wherein the at least one site amenity is associated with the at least one other bollard, for example by being attached thereto.

Abstract: A bollard having a plurality of parallel, vertical legs spaced apart from each other on the perimeter of a regular geometric shape. The minimum number and/or cross-section of the legs is governed by the need to avoid creating an entrapment area between adjacent legs. If an even number of legs is provided, they can be arranged in diametrically opposite pairs of decreasing height, the pairs of legs being joined at their tops to form a series of at least three nested, inverted substantially U-shaped forms of decreasing height set around a common vertical axis. The bollard also includes elements for joining the legs together as a unit, for example, a cylindrical center member having the common vertical axis of the legs as its longitudinal axis, a longitudinal rib joining each leg to the center member, and a plurality of horizontal ribs joining adjacent legs to each other.

Abstract: A bollard having a plurality of parallel, vertical legs spaced apart from each other on the perimeter of a regular geometric shape. The minimum number and/or cross-section of the legs is governed by the need to avoid creating an entrapment area between adjacent legs. If an even number of legs is provided, they can be arranged in diametrically opposite pairs of decreasing height, the pairs of legs being joined at their tops to form a series of at least three nested, inverted substantially U-shaped forms of decreasing height set around a common vertical axis. The bollard also includes elements for joining the legs together as a unit, for example, a cylindrical center member having the common vertical axis of the legs as its longitudinal axis, a longitudinal rib joining each leg to the center member, and a plurality of horizontal ribs joining adjacent legs to each other.