Post tensioning process of Girder along with some details.

The notations provided refer to the specifications for post-tensioned concrete girders. Here is a summary of the notations:
• Post tensioning proces...
Minimum grade of concrete: M30 indicates that the minimum strength of the concrete used in the construction should be 30 N/mm2.
Minimum cover: 30 mm specifies the minimum distance between the surface of the concrete and the post-tensioning tendons.
Size of bar: Not specified, but this could refer to the diameter of the post-tensioning steel tendons used.
Load transfer: End anchorage means that the load is transferred from the tendons to the end anchorage points.
Maximum stress occurs at the end of block: Bursting stress refers to the maximum compressive stress that can occur in the concrete at the end of the post-tensioned girder.
Deflection before applying stress: L/250 indicates that the maximum deflection of the girder prior to applying tension to the tendons should be 1/250th of the girder's length.
Deflection after applying stress: L/350 or 20 mm specifies that the maximum deflection after tensioning the tendons should be either 1/350th of the girder's length or 20 mm, whichever is smaller.
These notations are commonly used in design and construction specifications for post-tensioned concrete structures and provide the minimum requirements for ensuring the strength and stability of the structure.
STAY TUNED FOR MORE VIDEOS