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Column Forms: Heavy Civil Octagonal

The geometrically true octagon, like a circle, allows for a tieless forming configuration. Although, unlike a circular form, capacities are greatly reduced.

Forms are typically designed in 2 pieces with stripping flanges at opposite corners. This not only allows the form to be erected and stripped in halves, it enables the addition of a "filler" panel should the column's size be larger in one axis.

Typically, this configuration requires at least one row of vertical thru-ties on 4 foot centers, depending on the length of the longer side. Alternative configurations involve the use of a horizontal waler system to transfer pressure loads outside the form itself thru the use of external "dry" tie rods. In some instances the waler system completely wraps the column.

Capitals Elliptical Hexagonal Octagonal Round Square