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by the Master Builders Company, Cleveland, OH or Ironite by Fox Industries, <br />Madison IL as an additive as follows: <br />Material Volumes Weights <br />Cement 1.0 1.0 <br />Embeco 0.15 0.25 <br />Sand 1.5 1.5 <br />F. For very heavy (generally formed) patches; the Engineer may order the addition of <br />pea gravel to the mixture and the proportions modified as follows: <br />Material Volumes Weights <br />Cement 1.0 1.0 <br />Embeco 0.2 0.33 <br />Sand 1.0 1.0 <br />Pea Gravel 1.5 1.5 <br />G. In cases where the Embeco is employed in multiple patches and a rusty finish is <br />not desired on the surface, such as exposed faces of walls, etc., the final layer (or <br />at least the final 1/2 inch) shall be composed of the 1 1.5 grout without Embeco. <br />After hardening, rub lightly as described above for form tie holes. <br />3.12 INSTALLATION SCHEDULE <br />A. Concrete for all structures shall have minimum compressive strength at 28 days of <br />3000 psi unless otherwise indicated on the drawings. <br />3.13 FIELD CONTROL <br />A. The Contractor shall advise the Engineer of his readiness to proceed at least one <br />working day prior to each concrete placement. The Engineer will inspect the <br />preparations for concreting including the preparation of previously placed concrete, <br />the reinforcing and the alignment and tightness of formwork. No placement shall <br />be made without the prior approval of the Engineer. <br />B. The Engineer may have cores taken from any questionable area in the concrete <br />work such as construction joints and other locations as required for determination <br />of concrete quality. The results of tests on such cores shall be the basis for <br />acceptance, rejection or determining the continuation of concrete work. <br />C. The Contractor shall cooperate in obtaining cores by allowing free access to the <br />work and permitting the use of ladders, scaffolding and such incidental equipment <br />as may be required. The Contractor shall repair all core holes to the satisfaction of <br />the Engineer. The work of cutting and testing the cores will be at the expense of <br />the Owner if cores test satisfactorily and will be at the expense of the Contractor if <br />cores test unsatisfactorily. <br />END OF SECTION <br />06/07 03300 -13 03 -4197 <br />