ISOLATED PIERS

An isolated pier or pillar is the opposite of an attached pier in that it stands on its own with no connection to, or support from, any other walling. An isolated pier may be constructed as a support for a beam, as a gate pillar or as a decorative feature to provide a base for an ornamental feature such as a sundial, bird bath or statue.

In order to be structurally stable a pier must not be too slender and, in practical terms, the height of an isolated pier must not exceed eight times its least thickness. Also, a pier ceases to be regarded as such when its effective length exceeds four times its effective thickness; after this, it becomes classified as a wall.

ISOLATED PIERS

Fig. 204 English bond isolated piers.

ISOLATED PIERS

Fig. 205 Flemish bond isolated piers.