/ J l Table 7-1 ASTM Standard Roinforcing B;us Nominal Dimensions Bar Size Area. in. 2 Weight, Iba/It Oiamotor, fn. #3 0. 11 0. 3711 0. 375 114 0. 20 0. 668 0. 500 #5 0. 31, 04a o. ois 1/fi 0. 44 1. 502 0. 750 #7 0. 60 2. 044 0. 875 #8 0. 79 2. 670 1. 000 #9 1,00 3,400 1. 128 #10 127 4. 303 1270 #11 1. 56 5. 313 1. 410 #14 2. 25 7. 65 1. 693 #18 4. 00 13,60 2257 #20 4. 91 16. 69 2. 500 REINFORCING BARS: TYPES AND GRADES OF STEEL Rcinfon:ing ban in the United Stales arc rce<lily a Y1U1able in two ditlcrent types of stccl: carboo-s!Cel and low-alloy s<eel, These tw0 type$ of ste<I vruy in yield strcugth, tensile strength, pen:entnse of elong;,tion, bend test requirtme,us. and chemical composition. The pa:nicular grade (minimum yield strength) ofsttcl is a very important factor in the design of rcinfon:od concn:<c truc<urcs. Tb specific llf'l<le required for dillen:nt members ofa reinforred concrete structure will be stated in the project Specifications or on the structural drawings. 7-2 Concrola Re~ Stael lnsli!ula 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 35 36 37 38 39 40 41 6-9