Reinforcing poles

1. A method for reinstating a pole standing in ground comprising,

abutting an inner surface of a sleeve against an outer surface of the pole so as to have a lower portion of the sleeve penetrating the ground and an upper portion of the sleeve projecting above the ground, and

sliding a secondary member against an outer surface of the sleeve so that the secondary member locates against the sleeve and projects above the ground and into the ground,

wherein the construction is such that the sleeve and secondary member located against the sleeve jointly form a bridging beam incorporating a box section reinforcement of the bridging beam, and wherein, in the region of the box section reinforcement, the sleeve and secondary member are spaced apart from one another so as to form a gap therebetween.

2. A method according to claim 1 wherein the bridging beam is secured to the pole by at least one of, bolts extending through the pole, and strapping surrounding the pole.

3. A method according to claim 2 wherein the securement comprises between two and twelve metal strips surrounding the pole and bridging beam at different positions along the length of the pole.

4. A method according to claim 2 wherein the securement comprises a plurality of bolts extending through the pole and bridging beam.

5. A method according to claim 1 wherein the secondary member has longitudinal edges which come into locking engagement with upturned longitudinal edges of the sleeve when the secondary member is slid into position against the sleeve.

6. A method according to claim 5 wherein the bridging beam is secured to the pole by a plurality of bolts extending through the pole and the bridging beam including through the secondary member.

7. A bridging beam comprising:

a sleeve having an inner surface for abutting against a pole;

locating means on an outer surface of the sleeve; and

a secondary member slidable into reinforcing engagement with the locating means,

wherein the secondary member is shaped such that it jointly forms a reinforcing box section with the sleeve when it is slid into reinforcing engagement with the locating means, and wherein, in the region of the box section reinforcement, the sleeve and secondary member are spaced apart from one another so as to form a gap therebetween.

8. A bridging beam according to claim 7 wherein the sleeve and secondary member comprise steel sheet which has been shaped by pressing the steel sheet.

9. A bridging beam according to claim 7 wherein the sleeve comprises opposed upturned longitudinal edges.

10. A bridging beam according to claim 9 wherein the longitudinal edges each define one side of a channel.

11. A bridging beam according to claim 7 wherein the secondary member comprises longitudinally extending flanges formed on opposed sides of the secondary member.

12. A bridging beam according to claim 7 wherein the sleeve and secondary member are shaped so as to be held in locking engagement when the two are slid together.

13. A bridging beam according to claim 7 wherein the sleeve is formed with a tapered end.

14. A bridging beam according to claim 7 wherein the sleeve and secondary member each comprise a plurality of holes therethrough, the plurality of holes being located such that the holes on the sleeve line up with the holes on the secondary member when they are fitted together to jointly form a box section.

15. A bridging beam according to claim 7 wherein the secondary member has a generally C-shaped cross section.

16. A pole reinstated with a bridging beam according to the method of claim 1 .