A column shoe for fastening reinforced concrete columns to a base, wherein the column shoe comprises: a bottom plate with a bolt opening, a side wall member fastened to the bottom plate, the side wall member and the bottom plate providing a bolt casing, main bonds fastened to the side wall member for fastening the column shoe and the reinforced concrete column to one another, and back bond means, wherein the side wall member is a monolithic structure comprising two planar side plate sections and a connecting section connecting said two planar side plates sections, and wherein the bolt casing is symmetrical with respect to an imaginary vertical central plane A of the bolt casing, wherein the angle α between the planar side plate sections being between about 40° and about 60°, preferably between about 45° and about 50°, such as about 48°, the back bond means comprising two separate back anchors each fastened to a back surface of one of the two planar side plate sections, which back surfaces of the two planar side plate sections face away from one another, each separate back anchor having a fastening section by means of which the separate back anchor is fastened by welding to said back surface of the planar side plate section by welding along the fastening section the fastening section of each back anchor extending in parallel with the bottom plate, characterised by each separate back anchor having a vertical section that extends in parallel with the main bonds, and by the each separate back anchors of the back bond means being dimensioned so and by each separate back anchors of the back bond means being fastened to said back surface of the planar side plates sections so that the vertical section of the two separate back anchors are arranged at a distance from one another. a bottom plate with a bolt opening, a side wall member fastened to the bottom plate, the side wall member and the bottom plate providing a bolt casing, main bonds fastened to the side wall member for fastening the column shoe and the reinforced concrete column to one another, and back bond means, wherein the side wall member is a monolithic structure comprising two planar side plate sections and a connecting section connecting said two planar side plates sections, and wherein the bolt casing is symmetrical with respect to an imaginary vertical central plane A of the bolt casing, wherein the angle α between the planar side plate sections being between about 40° and about 60°, preferably between about 45° and about 50°, such as about 48°, the back bond means comprising two separate back anchors each fastened to a back surface of one of the two planar side plate sections, which back surfaces of the two planar side plate sections face away from one another, each separate back anchor having a fastening section by means of which the separate back anchor is fastened by welding to said back surface of the planar side plate section by welding along the fastening section the fastening section of each back anchor extending in parallel with the bottom plate, characterised by each separate back anchor having a vertical section that extends in parallel with the main bonds, and by the each separate back anchors of the back bond means being dimensioned so and by each separate back anchors of the back bond means being fastened to said back surface of the planar side plates sections so that the vertical section of the two separate back anchors are arranged at a distance from one another.