Rebar Development Length

This tool calculates development length of reinforcing steel in concrete according to ACI 318 and CSA A23.3

Input:

Bar / f'c	4000 ksi	5000 ksi	6000 ksi	7000 ksi	8000 ksi	9000 ksi	10000 ksi
#3	22	20	18	17	16	15	14
#4	29	26	24	22	21	19	18
#5	36	32	30	27	26	24	23
#6	43	39	35	33	31	29	27
#7	63	56	51	48	45	42	40
#8	72	64	59	54	51	48	45
#9	81	72	66	61	57	54	51
#10	91	81	74	69	64	61	58
#11	101	90	82	76	71	67	64

Eqn for Table:

Definitions

Define Parameters

Cl. 25.4.2.3 - Clear spacing >2db & clear cover at least db

Cl. 25.4.2.3 - Other cases

Cl. 25.4.2.4 - Advanced method

User Notes:

Bar / f'c	4000 ksi	5000 ksi	6000 ksi	7000 ksi	8000 ksi	9000 ksi	10000 ksi
#3	22	20	18	17	16	15	14
#4	29	26	24	22	21	19	18
#5	36	32	30	27	26	24	23
#6	43	39	35	33	31	29	27
#7	63	56	51	48	45	42	40
#8	72	64	59	54	51	48	45
#9	81	72	66	61	57	54	51
#10	91	81	74	69	64	61	58
#11	101	90	82	76	71	67	64

Bar / f'c	4000 ksi	5000 ksi	6000 ksi	7000 ksi	8000 ksi	9000 ksi	10000 ksi
#3	22	20	18	17	16	15	14
#4	29	26	24	22	21	19	18
#5	36	32	30	27	26	24	23
#6	43	39	35	33	31	29	27
#7	63	56	51	48	45	42	40
#8	72	64	59	54	51	48	45
#9	81	72	66	61	57	54	51
#10	91	81	74	69	64	61	58
#11	101	90	82	76	71	67	64

Bar / f'c	4000 ksi	5000 ksi	6000 ksi	7000 ksi	8000 ksi	9000 ksi	10000 ksi
#3	22	20	18	17	16	15	14
#4	29	26	24	22	21	19	18
#5	36	32	30	27	26	24	23
#6	43	39	35	33	31	29	27
#7	63	56	51	48	45	42	40
#8	72	64	59	54	51	48	45
#9	81	72	66	61	57	54	51
#10	91	81	74	69	64	61	58
#11	101	90	82	76	71	67	64