A running track includes a reinforced concrete slab base that is poured over and around post-tensioning cables suspended therein. The post-tensioning cables include transverse cables that extend transversely across the base, and lengthwise cable structures extending lengthwise through the base. Each lengthwise cable structure includes a series of individual segments that are joined end-to-end to form respective continuous loops and are individually tensioned. The lengthwise cable structures thus exert compressive forces on the base that are continuous and uninterrupted about the circumferential length of the track. The lengthwise cable segments are joined/tensioned from within voids initially formed within the concrete base and, after tensioning, these voids are filled with concrete to provide a concrete base having a uniform top surface that can also be covered in a running surface.

A running track includes a reinforced concrete slab base that is poured over and around post-tensioning cables suspended therein. The post-tensioning cables include transverse cables that extend transversely across the base, and lengthwise cable structures extending lengthwise through the base. Each lengthwise cable structure includes a series of individual segments that are joined end-to-end to form respective continuous loops and are individually tensioned. The lengthwise cable structures thus exert compressive forces on the base that are continuous and uninterrupted about the circumferential length of the track. The lengthwise cable segments are joined/tensioned from within voids initially formed within the concrete base and, after tensioning, these voids are filled with concrete to provide a concrete base having a uniform top surface that can also be covered in a running surface.

A concrete dowel tube made of carbon steel comprises a welded longitudinal seam.

A concrete dowel tube made of carbon steel comprises a welded longitudinal seam.

A method of forming concrete dowel tubes comprises forming such dowel tube from a roll of steel sheet material and occurs in a continuous process rather than indexed manner. A method of grouting concrete dowel tubes into holes formed in existing cured concrete comprises pumping grout through the dowel tubes to backfill the grout around the dowel tubes between the dowel tubes and the holes.

A method of forming concrete dowel tubes comprises forming such dowel tube from a roll of steel sheet material and occurs in a continuous process rather than indexed manner. A method of grouting concrete dowel tubes into holes formed in existing cured concrete comprises pumping grout through the dowel tubes to backfill the grout around the dowel tubes between the dowel tubes and the holes.