Table A-2 (PYCS lhe nominal dimension., for the twelve standard sius or de­ formed bars-#1 0 lo #64. The nominal dimensions ofa deformed bar (in­ cluding defonnations) are equivalent to thooc or a plain bar having the same wei&J,t per foot as U,e deformed bar. Steel mills produce reinfmcing bars to meet tl\e requirements or the ASTM specifications. The specification s require madcings for bar size designations od for strength levels (grwcs of steel). See Chapter 7 for a discussion of 1hc rcquin:d marl<ings. Slrellglh levels or grades of Steel are the minimum yield strengths. The metric grades of steel arc expressed in units of "Megapas­ cals", abbreviated ai. MPa. Grade 420, for ex. ample, means a minimum yield stn:ngth of 420 MJa. The value 420 MPa is equivnle,11 to 60,900 pounds per square inch. Grade 420 hors are the metric counterpart of Grade 60 bars. Table A-2 ASTM Standard Reinforcing Bars Bar Size Nominal Dimensions Deslg~Uon Area, in. 2 Weight, lb/ft Dlameler, in. #10 0. 11 0. 376 0. 375 #13 0. 20 0. 668 0. 500 #16 0. 31 1. 043 0. 625 #19 0. 44 1. 502 0. 750 #22 0. 60 2. 044 0. 875 #25 0. 79 2. 670 1. 000 #29 1. 00 SAOO 1. 128 1132 1. 27 4. 303 1. 270 #36 1. 56 5. 313 1. 410 ~ 2. 25 7. 66 1. 693 #57 4. 00 13. 60 2. 257 #84 4. 91 16. 69 2. 500 A-2 Coll Cfll O _,orc;,,g Steel,n.._ Section 609 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 6-9