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Minimum Portland cement content 658lbs/cu yd <br />Maximum water/cement ratio 0.45 <br />Minimum Slump 2 in. <br />Air Content 6.5% +/- 1.5% <br />Minimum Flexural Strength, third point loading 300PSI @ 24hr <br />Minimum Flexural Strength, third point loading 500PSI @ 3 days <br />X. DIVISION C: AGGREGATE MATERIALS <br />A. Prevailing specifications/INDOT Standard Specification Section: 301, 302, 303, 621, 904, 914 <br />B. Additions: <br />1. The requirements for No. 23 Slag Sand Mix are as follows: <br />Sieve Size <br />Percent Passin <br />1/ <br />3/8" <br />_ 100% <br />No.4 <br />80-100% <br />_.............................................................................................. ....... <br />No. 8 <br />60-90% <br />No. 16 <br />40-65% <br />No. 30 <br />25-40% <br />No. 50 <br />10-30% <br />No. 100 <br />........... _........... _.... _......................... <br />5-20% <br />No.200 _ <br />0-10% <br />2. Topsoil must be screened and free of foreign debris. <br />3. Topsoil will be tested for PH level. <br />XI. DIVISION D: SEWER MATERIALS -CASTINGS <br />A. Prevailing specifications/INDOT Standard Specification Section: 908, 907, 910 <br />B. Additions: <br />1. The manhole 1020 cover and frame shall be the following: <br />a. Cover: East Jordan Iron Works manhole cover 1020A (Neenah R-1642) or approved <br />equal <br />(i) Manhole covers must be labeled "City of South Bend" with "Storm" or "Sanitary" <br />b. Frame: East Jordan Iron Works manhole frame 2996Z or approved equal <br />2. The manhole 1040A cover and frame shall be the following: <br />a. Cover: East Jordan Iron Works manhole cover 1040A (Neenah R-1642) or approved <br />equal <br />