Ordinances-1996-209

F. Admixtures: Air-entraining - (Meeting ASTM C260, dosage per manufacturer's recommendations). Concrete structures and slabs exposed to freezing and thawing must have air-entraining admixture of 6% with a maximum variability of 1%. Water-reducing - (Meeting ASTM C494, Type A, dosage per manufacturer's recommendations. No Chlorides will be permitted). Accelerating - (Meeting ASTM C494, Type C or Type E, dosage per manufacturer's recommendations). G. Joint Filler: Filler shall be asphalt impregnated board (meeting ASTM D994 standards). H. Strength: 4,000 psi for 28-day moist cured lab samples. I. Water Ratio: Maximum of 0.49 (includes use of pozzolan). J. Cement Content: Minimum of 564 lbs. per cubic yard for 3/4" maximum aggregate. K. Slump: Maximum of 4" and Minimum of 2". L. Ready-Mix: All ready-mix type concrete must comply with ASTM C94. Addition of water to the concrete batch will not be permitted. 2. Construction. Sidewalks shall be of one-course construction. 3. Sidewalk Base. Concrete may be placed directly on compact and well drained soil. Where the soil is not well drained, a three (3) inch sub-base of compact, clean, course gravel, sand or cinders shall be laid. The adequacy of the soil drainage is to be determined by the City of Tiffin. 4. Sidewalk Bed. The sidewalk bed shall be graded to the established grade. 5. Sidewalk Dimensions: A) Residential sidewalks shall be at least four (4) feet wide and four (4) inches thick, and each section shall be no more than six (6) feet in length. B) Business District sidewalks shall extend from the property line to the curb. Each section shall be