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post tension cable
JP Post tension cables are used in concrete construction to add strength to thin and long slabs. This allows more span lengths between support columns. The cables have steel wires within plastic sheath. They are tensioned after pouring concrete,hence the name post-tension cables. Post-tension ‘tendon’ is a term used to define the complete assembly comprising of the sheath, pre-stressing strand, anchorages, corrosion-inhibiting coating or any grout around the steel wire or bar.
How JP Post-Tensioning Works?
JP Post-tensioning involves reinforcing concrete using high-strength steel strands. The steel strands are commonly called ‘tendons’. It is used in a wide range of concrete structures including:
• Apartment buildings
• Office buildings
• Slabs-on-ground
• Water tanks
• Bridges
It allows construction of structures that would otherwise be impossible.
Contractors need to locate post-tension cables when repairing structures. It is important to avoid hitting the cables when cutting or drilling for renovation. These cables have very high tension and cutting them can also compromise the structure’s integrity.
Benefits of Tensioning
When there is permanent stress and elongation in the JP post-tension cables, a compressive force is created on the concrete. This compression helps in countering the tensile forces due to load. Thus, the load-carrying capacity of your concrete structure increases significantly when this system is used.
JP Post-tension cables also allow the slabs and beams to be continuous. Thus, a single beam can be run from one end to other instead of having to place a beam between all the columns. Thus, this unique system not only helps in increasing the structure’s strength, it also increases overall efficiency.