Pipe racks

1. A structure comprising:

at least one foundation defining an aperture on an upper surface of the at least one foundation;

two legs, one of the two legs being supported by the at least one foundation, a lower surface of each of the two legs defining at least one aperture;

a horizontal support having two ends, a first end disposed in an aperture defined in a first leg of the two legs and a second end of the horizontal support disposed in an aperture defined in a second leg of the two legs;

a first rod forming a joint between the at least one foundation and one of the two legs, the first rod disposed in the aperture in the upper surface of the at least one foundation and in the aperture defined by the lower surface of said one of the two legs;

a second rod disposed within the aperture defined in the lower surface of one of the two legs, wherein the second rod defines a hollow space and receives the first rod within the hollow space; and

a passage defined through a side of the one of the two legs and through a hole in the second rod, the passage being threaded such that a distal end of a threaded bolt can be advanced into the passage to contact a side of the first rod within the hollow space of the second rod and move the first rod relative to the second rod.

2. The structure according to claim 1 , wherein:

a first hole is defined through a side of the one of the two legs, the first hole being in communication with the hollow space defined by the second rod.

3. The structure according to claim 2 , wherein:

a second hole is defined through a side of the one of the two legs, the second hole being in communication with the hollow space defined by the second rod.

4. The structure according to claim 1 , wherein the one of the two legs has four lateral sides, each side defines a passage therethrough, and a bolt is extendable through one of the passages.

5. The structure according to claim 1 , wherein a space between the first rod and the aperture in the at least one foundation is filled with an adhesive.

6. The structure according to claim 5 , wherein the adhesive is grout.

7. The structure according to claim 1 , wherein the hollow space between the first rod and the second rod is filled with an adhesive.

8. The structure according to claim 7 , wherein the adhesive is grout.

9. The structure of claim 1 , wherein the two legs and the horizontal support are a first set of two legs and horizontal support, the structure further comprising:

at least one second foundation defining an aperture on an upper surface of the at least one second foundation;

a second set of two legs, one of the second set of two legs being supported by the at least one second foundation, a lower surface of each of the two legs defining at least one aperture;

a second horizontal support having two ends, a first end of the second horizontal support disposed in an aperture defined in a first leg of the second set of two legs and a second end of the second horizontal support disposed in an aperture defined in a second leg of the second set of two legs;

a third rod forming a joint between the at least one second foundation and one of the legs of the second set of two legs, the rod disposed in the aperture in the upper surface of the at least one second foundation and in the aperture defined by the lower surface of the one of the two legs of the second set of two legs; and

a fourth rod disposed within the aperture defined in the lower surface of each leg of the second set of two legs, wherein the fourth rod defines a hollow space and receives the third rod within the hollow space,

wherein first and second sets of legs and the first and second horizontal members are arranged relative to each other such that a plane bisects the first and second horizontal members.

10. The structure of claim 9 , wherein the first and second sets of legs and first and second horizontal supports comprise concrete.

11. The structure of claim 1 , wherein the legs and horizontal support comprise concrete.