Define the column locations and properties
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Turn on Snap to Center ().
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Double click on the Column tool ().
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In the Default Column Properties dialog box:
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Choose a Concrete Strength of 5000 psi [32 MPa for AS3600; C32/40 for BS8110 and EC2].
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Set Height to 10 feet [3 m].
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Set Support Set to "Above".
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Set Width to 30 inches [750 mm].
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Set Diameter to 30 inches [750 mm].
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Check "Roller at Far End".
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Uncheck "Fixed Near" and "Fixed Far".
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Click OK.
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Click at the center of all 11 column locations shown on the imported drawing.