Column shoe

1. A column shoe for securing building elements of concrete comprising:

a bolt housing, wherein the bolt housing comprises a baseplate provided with a through bolt hole for an anchor bolt, and wherein the bolt housing comprises an upper structure connected to the baseplate, and

at least one attachment unit attached to the bolt housing for securing the column shoe and one of said building elements together,

wherein the bolt housing being provided with at least one socket member for attaching at least one additional anchoring means to the column shoe in addition to the at least one attachment unit and in addition to the anchor bolt, and

wherein the socket member comprising a hole, the hole being in the form of a cylindrical through hole for at least partly receiving the at least one additional anchoring means,

wherein the hole of the socket member being provided with an inner threading for co-operation with an outer threading of the at least one additional anchoring means, and wherein the inner threading extends over the whole length of the hole of the socket member and the socket member being configured to receive one of the at least one additional anchoring means at a first end of the hole and another one of the at least one additional anchoring means at a second end of the hole opposite the first end of the hole.

2. The column shoe according to claim 1 wherein

the through bolt hole in the baseplate of the bolt housing is a cylindrical through bolt hole, and

wherein the cylindrical through hole of the socket member having a first central axis that is parallel with a second central axis of the cylindrical through bolt hole in the baseplate of the bolt housing.

3. The column shoe according to claim 1 , wherein

the baseplate comprises a bottom surface that also forms an end surface of the bolt housing,

an opening of the hole of the socket member is located at a level of the bottom surface of the baseplate plate.

4. The column shoe according to claim 1 , wherein the socket member is an integrated part of at least one of the baseplate and the upper structure of the bolt housing.

5. The column shoe according to claim 1 , wherein the socket member is an external structure of the bolt housing and is fixedly or releasable attached to at least one of the upper structure of the bolt housing and the baseplate of the bolt housing.

6. The column shoe according to claim 1 , wherein the socket member is at least partly formed at least one of the baseplate and the upper structure of the bolt housing.

7. The column shoe according to claim 1 , wherein the socket member is formed fully within the baseplate of the bolt housing.

8. The column shoe according to claim 1 , wherein

the column shoe being provided with the at least one additional anchoring means, the at least one additional anchoring means having the outer threading, and

the at least one additional anchoring means being arranged at least partly in a socket member so that the at least one additional anchoring means is fastened to the bolt housing by means of the inner threading of the socket member and the outer threading of the at least one additional anchoring means.

9. The column shoe according to claim 1 , wherein the at least one attachment unit is attached to the upper structure of the bolt housing.

10. The column shoe according to claim 1 , wherein

the column shoe being provided with the at least one additional anchoring means,

the at least one additional anchoring means being arranged at least partly in the socket member so that the at least one additional anchoring means is fastened to the bolt housing by means of a positive connection between the socket member and the at least one additional anchoring means.

11. The column shoe according to claim 10 , wherein the at least one additional anchoring means is in the form of a main bond.

12. The column shoe according to claim 10 , wherein the at least one additional anchoring means is in the form of a reinforcement bar.

13. The column shoe according to claim 10 , wherein the at least one additional anchoring means is in the form of a dowel bar.

14. A method comprising:

lifting a concrete column having at least one said column shoe according to claim 1 attached to the concrete column by attaching a lifting member to the socket member of the at least one column shoe attached to the concrete column and by lifting the concrete column by lifting from the lifting member.