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How to find the length of a post tensioning parabolic strand if we just know the length and height of parabolic curve from one end to other?

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Can we find the length of parabolic prestressing duct in a girder if all we know is the height of the duct and the length of girder

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How to find the equation of parabolic strand in a post tensioning beam
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A R.C beam 30 cm*50cm overall is reinforced with 5-25 mm dia.bars in tension and 5-12 dia.bars in compression each at a clear cover each at a clear cover of 25 mm . If effective span of the beam is 4
asked Aug 6, 2015 in Civil Engineering by mfby2k  

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a cantiliver of length I carries a load W at the free end. if it is propped at a point at distance 1/4 from the free end so that is at the same level as the fixed end,find the reaction on the prop?
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