jacking force

jacking force

The force exerted temporarily by the device which introduces tension in tendons in prestressed concrete.
References in periodicals archive ?
Proper pipe jacking slurry can significantly reduce the pipe jacking force and reduce the investment of the reaction wall and relay stations.
Stressing was carried out in phases for each of the beams, which were stressed to a jacking force of 210kN per strand.
"Both machines were Soltau RVS models: a RVS 600 (600-ton jacking force) and a modified RVS 250 (400-ton jacking force)."
The main advantages of this PSC girder is an ease of factory-manufacture and fabrication resulting into rapid construction, flexible choice of girder depth by adjusting initial jacking force aside from other advantages and disadvantages.
Mammoet will supply 15,000 tonnes of jacking force for the installation of a 50-metre long tunnel.
Then, jacking force is applied to the thrust pipe, advancing it forward and causing it to join with the first section.
At 8,000 psi, the jacking system offers 400 tons of jacking force and 30 percent more pressure for the IJSs.
This means that you will use smaller cranes and lifting machines, and you will use less jacking force."
The project management team selected a Bohrtec BM6000LKS auger boring machine with 265 tons of jacking force and 22,500 foot-pounds of torque along with a Theodolite guidance system to tackle the complex and intricate project.
While the first launch was for a weight of 660t with a jacking force of 107t, the final launch was 31,400t with a jacking force of 2,600t.
The system was powered and driven through the ground by one of Bohrtec's smaller long frame machines, the BM400L, with 100 tons of jacking force and approximately 14,500 foot-pounds of torque.