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' A. Concrete for every part of the work shall be homogeneous structure which, when hardened, will have the required strength, durability and appearance. B. Formwork, mixtures and concrete placement workmanship shall be such that concrete surfaces, when exposed, will require only minimal finishing with no excess honeycombing, voids or irregular color lines. 3.06 FORMS A. Forms shall be used for all concrete masonry, including footings. Forms ' shall be so constructed and placed that the resulting concrete will be of the shape, lines, dimensions, appearance, and to the elevations indicated on the Drawings. B. Forms shall be made of wood, metal, or other approved material. Wood forms shall be constructed of sound lumber or plywood of suitable dimensions, free from knotholes and loose knots; where used for exposed surfaces, boards shall be dressed and matched. Plywood shall be sanded smooth and fitted with tight joints between panels. Metal forms shall be of an approved type for the class of work involved and of the thickness and design required for rigid construction. C. Edges of all form panels in contact with concrete shall be flush within 1/32 -inch and forms for plane surfaces shall be such that the concrete will be plane within 1/16 -inch in 4 feet. Forms shall be tight to prevent the passage of mortar and water and grout. D. Forms for walls shall have removable panels at the bottom for cleaning, inspection, and scrubbing -in of bonding paste. Forms for walls of considerable height shall be arranged with tremies and hoppers for placing concrete in a manner that will prevent segregation and accumulation of hardened concrete on the forms or reinforcements above the fresh concrete. 06/06 03300 -8 03-4138.0 I C. Slump tests will be made in the field by the testing laboratory. 3.04 INSPECTION AND CONTROL ' A. The preparation of forms, placing of reinforcing steel, conduits, pipes, and sleeves, batching, mixing, transportation, placing and curing of concrete shall be at all times under the inspection of the Engineer. B. The Contractor shall engage the services of an approved testing laboratory to establish the basic mixtures of concrete as required by the specifications. C. The Owner will engage the services of a testing laboratory to test field control cylinder specimens and to conduct other tests as specified herein or as deemed required by the Engineer to insure the quality. D. Air entrainment shall be measured by the testing laboratory or his representative at time of concrete deposit in accordance with ASTM Designation C231. 3.05 CONCRETE APPEARANCE ' A. Concrete for every part of the work shall be homogeneous structure which, when hardened, will have the required strength, durability and appearance. B. Formwork, mixtures and concrete placement workmanship shall be such that concrete surfaces, when exposed, will require only minimal finishing with no excess honeycombing, voids or irregular color lines. 3.06 FORMS A. Forms shall be used for all concrete masonry, including footings. Forms ' shall be so constructed and placed that the resulting concrete will be of the shape, lines, dimensions, appearance, and to the elevations indicated on the Drawings. B. Forms shall be made of wood, metal, or other approved material. Wood forms shall be constructed of sound lumber or plywood of suitable dimensions, free from knotholes and loose knots; where used for exposed surfaces, boards shall be dressed and matched. Plywood shall be sanded smooth and fitted with tight joints between panels. Metal forms shall be of an approved type for the class of work involved and of the thickness and design required for rigid construction. C. Edges of all form panels in contact with concrete shall be flush within 1/32 -inch and forms for plane surfaces shall be such that the concrete will be plane within 1/16 -inch in 4 feet. Forms shall be tight to prevent the passage of mortar and water and grout. D. Forms for walls shall have removable panels at the bottom for cleaning, inspection, and scrubbing -in of bonding paste. Forms for walls of considerable height shall be arranged with tremies and hoppers for placing concrete in a manner that will prevent segregation and accumulation of hardened concrete on the forms or reinforcements above the fresh concrete. 06/06 03300 -8 03-4138.0 I