Common use of Gradation Clause in Contracts

Gradation. (i) Unless otherwise directed or approved by the Engineer, the grading of sand shall be within the limits indicated hereunder : IS Sieve Designation Percentage passing for Grading Zone-I Grading Zone-II Grading Zone-III Grading Zone-IV 10mm 100 100 100 100 4.75mm 90 – 100 90 – 100 90 – 100 95 – 100 2.36 60 – 95 75 – 100 85 – 100 95 – 100 1.18mm 30 – 70 55 – 90 75 – 100 90 – 100 600 micron 15 – 34 35 – 59 60 – 79 80 – 100 300 micron 5 – 20 8 – 30 12 – 40 15 – 50

Gradation. (iI) Unless otherwise directed or approved by the Engineer, the grading of sand shall be within the limits indicated hereunder under here: IS Sieve Designation Percentage passing for Grading Zone-Grading Grading Grading Designation Zone – I Grading Zone-Zone – II Grading Zone-III Grading Zone-IV 10Zone – II Zone AVE 10 mm 100 100 100 100 4.754.75 mm 90 – 100 90 – 100 90 – 100 95 – 100 2.36 mm 60 – 95 75 – 100 85 – 100 95 – 100 1.181.18 mm 30 – 70 55 – 90 75 – 100 90 – 100 600 micron 15 – 34 35 – 59 60 – 79 80 – 100 300 micron 5 – 20 8 – 30 12 – 40 15 – 50