structural design data

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structural design ready reckoner

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AREA VOLUME SECTION MODULUS FOR DIFFERENT SHAPES OF BEAMS & COLUMN

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How to calculate the section modulus z Z = I/Y I= moment of inertia Y = distance from neutral axis For symmetrical section Value of Z is the same above or below the centroid . For asymmetrical sections two values are found Z max and Z min.

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Shape Rectangle Area W X L Volume l x w x h Section modulus W x l x l /6 N.Axis h = height of the cube

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Shape circle Area Volume 4/3 x Section modulus /4 Shape circle Area Volume Section modulus Sphere

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Shape Hollow tube Area Volume (L is the length of I section) Area x L Section modulus - )/4 r2 Shape Hollow tube Area Volume (L is the length of I section) Area x L Section modulus

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Shape I section Area B x H – b x h Volume (L is the length of I section) (B x H – b x h) x L Section modulus B x /6 - b x /6H Shape I section Area B x H – b x h Volume (L is the length of I section) (B x H – b x h) x L Section modulus

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Shape Triangle Area ½ x b x h Volume 1/3 x x h Shape Triangle Area ½ x b x h Volume

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Exercise 1 Make the list of different geometrical shapes’ Area , volume and section modulus The ready reckoner will help us during structural design

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