Hydraulic rod tensioning system

A tensioning system for tensioning a stud that projects from a structural member, the stud having a central axis, the tensioning system comprising:

• an adapter ring including internal and external surfaces, adapter ring including at least two axial bores defined therein;
• a puller screw including first and second ends, the first end of the puller screw configured for engaging the stud, the second end of the puller screw configured for engaging the internal surface of the adapter ring;
• at least two posts, each of the posts having first and second ends, each of the posts disposed in a corresponding one of the at least two axial bores defined the adapter ring, each of the first ends of the posts configured for being supported by the structural member, wherein a portion each of the second ends of the at least two posts extend outwardly from the at least two axial bores of the adapter ring in a direction away from the structural member;
• a cylinder including a sidewall and a closed bottom, the sidewall including an internal surface configured for engaging the external surface of the adapter ring to fixedly position the adapter ring to the cylinder;
• a first piston movably positioned within the cylinder, the first piston configured for being supported by the second ends of the at least two posts;
• a second piston movably positioned within the cylinder;
• a leg member coupled to the first piston and the second piston;
• an intermediate cap fixedly coupled with the cylinder and including an aperture defined therein configured to allow the leg member to be movably positioned therein, wherein the intermediate cap is disposed between the first piston and the second piston thereby defining a first hydraulic chamber between the first piston and the intermediate cap, wherein a second hydraulic chamber is defined between the second piston and the cylinder, wherein when a hydraulic fluid is fed into the first hydraulic chamber and the second hydraulic chamber, the first and second pistons move away from the cylinder to apply a tension force on the stud.