Post-tensioning is typically performed at which location?

• A. On-site training facility
• B. Laboratory
• C. Plant
• D. Job site

Answer: (D)

Post-tensioning involves embedding ducts in concrete, threading steel tendons, and then applying tensile force after the concrete has gained sufficient strength to carry the imposed loads. This work is typically done at the actual project site because the member needs to be in its final geometry and the stressing equipment is brought to the structure. After tensioning, the ducts are often grouted to lock in the force and protect the tendons, all part of the on-site construction sequence. While precast elements can be post-tensioned in a plant in some cases, the common practice for cast-in-place construction is to perform post-tensioning on the job site.