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' <br />C. Aggregates: <br />1. <br />Fine aggregate shall consist of washing inert sand conforming to the requirements <br />of ASTM Specification C -33, and the following detailed requirements: <br />Sieve % Passim <br />' <br />No. 4 95 -100% <br />16 60 -75 <br />50 13 -30 <br />100 3 -8 <br />Fineness Modulus 2.4 -2.6 <br />Organics Organic Plate 2, per ASTM <br />C -40 <br />Silt 2.0% maximum <br />' <br />Mortar Strength 95% minimum as per ASTM <br />C87, Section 10 <br />Soundness 8% maximum loss, using <br />magnesium sulfate, <br />' <br />subjected to 5 cycles <br />2. <br />Coarse aggregate shall consist of well - graded crushed rock or washing gravel <br />' <br />conforming to the requirements of ASTM Specification C -33 and the following <br />detailed requirements: <br />Organics Organic Plate 1, per ASTM <br />' <br />C -40 <br />Silt 1.0% maximum <br />Soundness 8% maximum loss, using <br />magnesium sulfate, <br />subjected to 5 cycles <br />' <br />3. <br />The following designated sizes* of aggregate shall be the maximum employed in <br />concrete: <br />2 inch for plain concrete <br />1 inch for reinforced sections 10 inch and over in thickness <br />3/4 inch for reinforced sections less than 10 inch in thickness <br />4. <br />*Note: The "Designated Size" and the corresponding gradations shown represent <br />the end or combined gradation of the coarse aggregate to be used in the final <br />concrete. <br />D. Water: <br />1. <br />Water shall be clean and free from injurious amounts of oils, acid, alkali, organic <br />' <br />matter or other deleterious substances. <br />2. <br />When subjected to the mortar strength test described in ASTM C87, the 28 day <br />' <br />strength of mortar specimens made with the water under examination and normal <br />portland cement shall be at least 100 per cent of the strength of similar specimens <br />made with distilled water. <br />' <br />Potable fulfill <br />3. <br />tap water will normally the above requirements. <br />' <br />06/05 <br />03300 -5 03- 4138.B <br />