MASCO Catalog: Concrete Forming & Accessories

239 MASONS SUPPLY COMPANY Oregon (800) 537-3407 ♦ Washington (800) 537-6216 Clackamas | Eugene | West Eugene | Hillsboro | Medford | Portland | Salem | Ridgefield | Seattle | Tacoma | Woodinville M A S C O . N E T GENERAL & TECH INFO CHARTS Rate of placement R, ft per hr Concrete temperature during placement, degrees F 90 o F 80 o F 70 o F 60 o F 50 o F 40 o F 1 250 263 279 300 330 375 2 350 375 407 450 510 600 3 450 488 536 600 690 825 4 550 600 664 750 870 1050 5 650 713 793 900 1050 1275 6 750 825 921 1050 1230 1500 7 850 938 1050 1200 1410 1725 8 950 1050 1179 1350 1590 1950 9 1050 1163 1307 1500 1770 2175 10 1150 1275 1436 1650 1950 2400 11 1250 1388 1564 1800 2130 2625 12 1350 1500 1693 1950 2310 2850 13 1450 1613 1821 2100 2490 14 1550 1725 1950 2250 2670 16 1750 1950 2207 2550 18 1950 2175 2464 2850 20 2150 2400 2721 22 2350 2625 2979 24 2550 2850 26 2750 28 2950 Base values of lateral pressure on column forms, * psf, for various pour rates and concrete temperatures. Multiply value from this table by unit weight and chemistry coefficients to obtain pressure for design of column forms. * Base value of lateral pressure equals 150 + 9000 R/T NOTE: Depending on coefficient values, the minimum pressure of 600 C w may govern. Do not use pressures in excess of wh. BASE VALUES OF LATERAL PRESSURE ON WALL FORMS Multiply value by unit weight & chemistry coefficients to obtain pressure on wall form Table based on: Cc= 1.0 Cw= 1.0 RATE OF PLACEMENT p, maximum lateral pressure, psf, for temperature indicated 90 F 80 F 70 F 60 F 50 F 40 F 1 663 250 728 263 810 279 920 300 1074 330 1305 375 2 694 350 763 375 850 407 967 450 1130 510 1375 600 3 726 450 798 488 890 536 1013 600 1186 690 1445 825 4 757 550 833 600 930 664 1060 750 1242 870 1515 1050 5 788 650 868 713 970 793 1107 900 1298 1050 1585 1275 6 819 750 903 825 1010 921 1153 1050 1354 1230 1655 1500 7 850 938 1050 1200 1410 1725 8 881 973 1090 1247 1466 1795 9 912 1008 1130 1293 1522 1865 10 943 1043 1170 1340 1578 1935 11 974 1078 1210 1387 1634 2005 12 1006 1113 1250 1433 1690 2075 13 1037 1148 1290 1480 1746 2145 14 1068 1183 1330 1527 1802 2215 15 1099 1218 1370 1573 1858 2285 16 1130 1253 1410 1620 1914 2355 17 1161 1288 1450 1667 1970 2425 P=CwCc[150+43, 400/T+2800 R/T] applies where placement height is greater than 14'. P=CwCc [150+9000R/T] (shaded) applies for R less than 7 FT/HR. ACI 347-04 (Walls) ACI 347-04 (Columns) ACI 347-04 Unit weight coefficient: C w Less than 140 pcf: C w =0.5[1+(w/145 pcf)] (but not less than 0.80) 140 to 150 pcf: C w =1.0 More than 150 pcf: C w =w/145 pcf Chemistry coefficient C c Type I, II and III, w/o retarders: C c =1.0 Type I, II and III w/ retarders: C c =1.2 Other types containing less than 70% slag or 40% fly ash, w/o retarders: C c =1.2 Other types containing less than 70% slag or 40% fly ash w/ retarders: C c =1.4 Blends containing more than 70% slag or 40% fly ash: C c =1.4