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Prestressing strands

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 the grade of strands shall be G270 with a yield strength of 1650 MPA and ultimate strength of 1860 MPA. Strands shall be protected against corrosion. It shall be cold drawn, stress relieved, low relaxation, uncoated, seven wires and high tensile strength.

Properties

1.Tensile strength: strand shall be tested at the laboratory to verify the tensile strength. 




2.Modulus of elasticity: the relation between stress and strain remain linear up to 90% of ultimate strength. We can notice this from the figure below. The value for modulus of elasticity for strands is given by AASTO 5.4.2 for strands equal to 197000 MPA, for bars equal 207000 MPA. 








Comments

  1. DC EngineeringMay 3, 2024 at 2:50 AM

    Exploring the intricate elegance of prestressing strands, it's fascinating to witness how Jainex Steel & Metal adds depth to the narrative with its steadfast commitment to excellence.

    ReplyDelete

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My name is Mohammad Hamdan, and I am a Civil/bridge Engineer with extensive professional background and experience in the field of construction. I have 10+ years of experience in the construction field. During my professional career, my emphasis has been placed on structural projects, mainly bridges, infrastructure and roads. Reading and practicing the design of structures is my passion.i was lucky to be a part of a big team that executed major highway interchanges. I believe in spreading the knowledge, thus, i compose these courses to share my experience and knowledge. My course focuses on the practical side of construction field. On other word, i am sharing some of what new engineers need to know about construction field. Beside working on construction field, i love writing some articles on my website ( curious civil engineer) Moreover, i wrote some engineering papers, you can check them  by searching my name on Google (Mohammad mamon Hamdan)