Cross-sectional areas of groups of bars (mm2)Bar SizeNumber of Bars * Denotes non-preferred sizes

12345678910

6mm28.356.584.8113141170198226255283

8mm50.3100151201251302352402452503

10mm78.5157236314339471550628707785

12mm113.122633945256667979290517181131

13mm132.7265398531664796929106211951327

16mm201.1402603804100512061407160818102011

20mm314.26289421257157118852199251328273142

25mm490.998214731963245429453436392744184909

32mm804.2160824133217402148255630643472388042

40mm1257.0251337705026628375408790100531131012566

50mm*1963.539275890785498121178113744157081767119635

Cross-sectional areas for Specific Spacings in mm2 / Metre WidthBar SizeSpacing of Bars (Millimetres) * Denotes non-preferred sizes

75100125150175200225250275300

6mm *37728322618816214112511310394

8mm670503402335287251223201183168

10mm1047786628524449393348314285262

12mm15081131905754646565503452411377

13mm177013271062885758664590531483442

16mm268120111608134011491005894801731670

20mm4189314225132094179515711396125711431047

25mm6545490939273272280524542182196317851636

32mm-804264345362459640213574321729242681

40mm--100538378718162835587502745714189

50mm*---130901122096178727785471406545