Common use of Grading Clause in Contracts

Grading. The aggregates shall be composed of different size fractions in the proportions herein setforth. Grading of the materials from anyone source shall be reasonably uniform. The grading of aggregates for a given work shall be specified in the Schedule "A". In case concrete resulting from a mixture of aggregates approaching extreme limits of gradation is not workable, or when finished does not exhibit a proper surface due to an excess of particulars approximately 3mm to 12.5mm (1/8" to 1/2") size either a fine aggregate having a sufficiently greater percentage of fine materials or a coarse aggregate having a small percentage of fine materials shall be used if required by the Superintending Engineer.