pscgovtjobs.com · =fck -0.65 S =fck +1.65 S -fck - 1.65 S t =fck +0.65 S Options : Standards...
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pscgovtjobs.com · =fck -0.65 S =fck +1.65 S -fck - 1.65 S t =fck +0.65 S Options : Standards deviation.) compressive strength and 'S' is (Where fck is 28 day Characteristic Mean