Pipe racks

Abstract

A structure includes two legs, a horizontal support, and an adhesive. Each of the two legs includes at least one aperture. The horizontal support has two ends. A first end is located in an aperture in a first leg of the two legs and a second end of the horizontal support is located in an aperture in a second leg of the two legs. The first end of the horizontal support has a cross-sectional area that is less than a cross-sectional area of the aperture in the first leg and the second end of the horizontal support has a cross-sectional area that is less than a cross-sectional area of the aperture in the second leg. The adhesive is within each aperture and in contact with the horizontal support.

1 . A structure comprising:
 two legs, each of the two legs including at least one aperture;   a horizontal support having two ends, a first end located in an aperture in a first leg of the two legs and a second end of the horizontal support being located in an aperture in a second leg of the two legs, the first end of the horizontal support having a cross-sectional area that is less than a cross-sectional area of the aperture in the first leg and the second end of the horizontal support having a cross-sectional area that is less than a cross-sectional area of the aperture in the second leg; and   an adhesive within each aperture and in contact with the horizontal support.   
     
     
         2 . The structure according to  claim 1 , wherein the two legs and the horizontal support are all made of pre-stressed concrete. 
     
     
         3 . The structure according to  claim 1 , wherein a cross-sectional area of the first end of the horizontal support is 40-75% of a cross-sectional area of the aperture in the first leg. 
     
     
         4 . The structure according to  claim 1 , wherein the adhesive is a grout. 
     
     
         5 . The structure according to  claim 1 , wherein the adhesive is located around all sides of the horizontal support. 
     
     
         6 . The structure according to  claim 1 , wherein the horizontal support has a rectangular side cross-section, and adhesive is located around only three sides of the horizontal support. 
     
     
         7 . The structure according to  claim 6 , wherein concrete is located along a fourth side of the horizontal support. 
     
     
         8 . The structure according to  claim 1 , further comprising:
 a second set of two legs;   a horizontal strut extending between a first leg of the two legs and a first leg of the second set of two legs.   
     
     
         9 . The structure according to  claim 8 , further comprising:
 a second horizontal strut extending between a second leg of the two legs and a second leg of the second set of two; and   a second horizontal support having two ends, a first end of the second horizontal support being located in an aperture in the horizontal strut and a second end of the second horizontal support being located in an aperture in the second horizontal strut.   
     
     
         10 . A method for constructing a structure:
 placing two legs, each of the two legs including at least one aperture;   inserting a first end of a horizontal support into an aperture in a first leg of the two legs and a second end of the horizontal support into an aperture in a second leg of the two legs, the first end of the horizontal support having a cross-sectional area that less than a cross-sectional area of the aperture in the first leg and the second end of the horizontal support having a cross-sectional area that is less than a cross-sectional area of the aperture in the second leg; and   inserting an adhesive into each aperture.   
     
     
         11 . The method according to  claim 10 , wherein the adhesive is a grout. 
     
     
         12 . The method according to  claim 10 , further comprising:
 pouring concrete into each aperture over a top side of the horizontal support.   
     
     
         13 . The method according to  claim 12 , wherein the pouring concrete does not completely fill each aperture with concrete. 
     
     
         14 . The method according to  claim 12 , further comprising:
 inserting reinforcement strands into each aperture above the top side of the horizontal support before the pouring concrete.   
     
     
         15 . The method according to  claim 11 , further comprising:
 placing a second set of two legs;   providing a horizontal strut extending between a first leg of the two legs and a first leg of the second set of two legs.   
     
     
         16 . The method according to  claim 10 , further comprising:
 placing a second horizontal strut extending between a second leg of the two legs and a second leg of the second set of two; and   inserting a second horizontal support having two ends into apertures in the horizontal strut and the second horizontal strut such that a first end of the second horizontal support is located in an aperture in the horizontal strut and a second end of the second horizontal support is located in an aperture in the second horizontal strut.   
     
     
         17 . A structure comprising:
 two legs, each of the two legs including at least one aperture;   a horizontal support having two ends, a first end located in an aperture in a first leg of the two legs and a second end of the horizontal support being located in an aperture in a second leg of the two legs, the first end of the horizontal support having a cross-sectional area that is less than a cross-sectional area of the aperture in the first leg and the second end of the horizontal support having a cross-sectional area that is less than a cross-sectional area of the aperture in the second leg; and   a concrete layer within each aperture and in contact with the horizontal support.   
     
     
         18 . The structure according to  claim 17 , wherein the concrete layer does not completely fill each aperture. 
     
     
         19 . The structure according to  claim 17 , further comprising:
 a reinforcement strand within each aperture above the top side of the horizontal support, each end of the reinforcement strand penetrating opposite sides of the aperture and the reinforcement strand running through the concrete layer.   
     
     
         20 . The structure according to  claim 17 , further comprising:
 an adhesive layer in the aperture around sides and a bottom of the horizontal support,   wherein the concrete layer is in contact with a top of the horizontal support.