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Weights & Area's of Reinforcement

Cross-sectional areas of groups of bars (mm2)

Bar Size	Number of Bars * Denotes non-preferred sizes
	1	2	3	4	5	6	7	8	9	10
6mm *	28.3	56	85	113	141	170	198	226	255	283
8mm	50.3	100	151	201	251	302	352	402	452	503
10mm	78.5	157	236	314	339	471	550	628	707	785
12mm	113.1	226	339	452	566	679	792	905	1718	1131
16mm	201.1	402	603	804	1005	1206	1407	1608	1810	2011
20mm	314.2	628	942	1257	1571	1885	2199	2513	2827	3142
25mm	490.9	982	1473	1963	2454	2945	3436	3927	4418	4909
32mm	804.2	1608	2413	3217	4021	4825	5630	6434	7238	8042
40mm	1256.6	2513	3770	5026	6283	7540	8790	10053	11310	12566
50mm	1963.5	3927	5890	7854	9812	11781	13744	15708	17671	19635

Cross-sectional areas for Specific Spacings in mm2 / Metre Width

Bar Size	Spacing of Bars (Millimetres) * Denotes non-preferred sizes
	75	100	125	150	175	200	225	250	275	300
6mm *	377	283	226	188	162	141	125	113	103	94
8mm	670	503	402	335	287	251	223	201	183	168
10mm	1047	786	628	524	449	393	348	314	285	262
12mm	1508	1131	905	754	646	565	503	452	411	377
16mm	2681	2011	1608	1340	1149	1005	894	801	731	670
20mm	4189	3142	2513	2094	1795	1571	1396	1257	1143	1047
25mm	6545	4909	3927	3272	2805	2454	2182	1963	1785	1636
32mm	-	8042	6434	5362	4596	4021	3574	3217	2924	2681
40mm	-	-	10053	8378	7181	6283	5587	5027	4571	4189
50mm*	-	-	-	13090	11220	9617	8717	7854	7140	6545

Weights for Groups of Bars (kg/metre run)

Bar Size	Number of Bars * Denotes non-preferred sizes
	1	2	3	4	5	6	7	8	9	10
6mm *	0.222	0.444	0.666	0.888	1.11	1.332	1.554	1.776	1.998	2.22
8mm	0.395	0.79	1.185	1.58	1.975	2.37	2.765	3.16	3.555	3.95
10mm	0.616	1.232	1.848	2.464	3.08	3.696	4.312	4.928	5.544	6.16
12mm	0.888	1.776	2.664	3.552	4.44	5.328	6.216	7.104	7.992	8.88
16mm	1.579	3.158	4.737	6.316	7.895	9.474	11.053	12.632	14.211	15.79
20mm	2.466	4.932	7.398	9.864	12.33	14.796	17.262	19.728	22.194	24.66
25mm	3.854	7.708	11.562	15.416	19.27	23.124	26.97	30.832	34.686	38.54
32mm	6.313	12.626	18.939	25.252	31.565	37.878	44.191	50.504	56.817	63.13
40mm	9.864	19.728	29.592	39.456	49.32	59.184	69.048	78.912	88.776	98.64
50mm*	15.413	30.826	46.239	61.652	77.065	92.478	107.891	123.304	138.717	154.13

Weight per M2 in one direction (Add both directions for total M2 weight)

Bar Size	Spacing of Bars (millimetres) * Denotes non-preferred sizes
	75	100	125	150	175	200	225	250	275	300
6mm *	2.960	2.220	1.776	1.480	1.269	1.110	0.987	0.888	0.807	0.740
8mm	5.267	3.950	3.160	2.633	2.257	1.975	1.756	1.580	1.436	1.317
10mm	8.213	6.160	4.928	4.107	3.520	3.080	2.738	2.464	2.240	2.053
12mm	11.840	8.880	7.104	5.920	5.074	4.440	3.947	3.552	3.229	2.960
16mm	21.050	15.790	12.630	10.530	9.023	7.895	7.018	6.316	5.742	5.262
20mm	32.880	24.660	19.730	16.440	14.090	12.331	10.960	9.864	8.967	8.220
25mm	51.390	38.540	30.830	25.690	22.020	19.270	17.128	15.420	14.015	12.850
32mm	-	63.130	50.500	42.090	36.070	31.570	28.058	25.250	22.956	21.040
40mm	-	-	78.910	65.760	56.370	49.320	43.840	39.460	35.869	32.880
50mm*	-	-	-	102.750	88.070	77.060	68.502	61.650	56.047	51.380

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