Reinforcement Calculator – Areas of Different Diameters and Numbers of Rebars

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Reinforcement calculator for the design of reinforced concrete structures, areas of reinforcements for different diameters and numbers of rebars are required for specifying number of reinforcements. For example, for a reinforced concrete slab, it can be mentioned that provide 10 number of 12mm diameter bars in width and 12 number of 8mm diameter rebars in length. Likewise, for the design of beams, columns, footings etc. the number of bars can be specified.

Reinforcement Calculator

Select Reinforcement Diameter and Numbers
Reinforcement	Diameter	Numbers
Reinforcement-1 :	mm	No's
Reinforcement-2 :	mm	No's
Reinforcement-3 :	mm	No's

Calculate Reinforcement

Reinforcement Calculator - Results:

Following table provides areas of different number of rebars of various sizes.

Areas of Different Diameters and Numbers of Rebars

Rebar size (mm)	Area(mm2) of Number of Bars
	1	2	3	4	5
6	28.3	56.5	84.8	113.1	141.4
8	50.3	100.5	150.8	201.1	251.3
10	78.5	157.1	235.6	314.2	392.7
12	113.1	226.2	339.3	452.4	565.5
16	201.1	402.1	603.2	804.2	1005.3
20	314.2	628.3	942.5	1256.6	1570.8
25	490.9	981.7	1472.6	1963.5	2454.4
32	804.2	1608.5	2412.7	3217.0	4021.2

   

Rebar size (mm)	Area(mm2)of Number of Bars
	6	7	8	9	10
6	169.6	197.9	226.2	254.5	282.7
8	301.6	351.9	402.1	452.4	502.7
10	471.2	549.8	628.3	706.9	785.4
12	678.6	791.7	904.8	1017.9	1131.0
16	1206.4	1407.4	1608.5	1809.6	2010.6
20	1885.0	2199.1	2513.3	2827.4	3141.6
25	2945.2	3436.1	3927.0	4417.9	4908.7
32	4825.5	5629.7	6434.0	7238.2	8042.5

Read More Requirement for Detailing of Reinforcements in Concrete Structures Points to Remember for Civil Site Engineer Pre-Concrete Checks for Reinforcement and Its Cover