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Bolt Circle: The diameter of the circle that passes through the center of each bolt.
Distance across flats of bolting nut: Enter the distance measured across the flats of the bolting nut.
Ultimate 28 day concrete strength: The theoretical concrete strength after at least 28 days of setup. This value will be multiplied by the concrete factor on the Wind/Seismic tab under Tools > Defaults to determine the allowable concrete strength.
Distance across flats of bolting nut: Enter the distance measured across the flats of the bolting nut.
Anchor Bolt Material
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