Sisal Ropes - Strengths

Sisal rope 3-strand, minimum breaking strength and safe load reference table. Contains data for various rope diameters from 3/16" to 2" with corresponding breaking strengths, safe loads (safety factor 12), and weight specifications.

Rope Diameter (in)	Minimum Breaking Strength (mm)	Safe Load - lbf	Safe Load - kN	Weight (lbm/ft)	Weight (kg/m)
3/16	5	290	1.29	0.01	0.02
1/4	6	385	1.71	0.02	0.03
5/16	8	640	2.85	0.03	0.04
3/8	10	865	3.85	0.04	0.06
7/16	11	1120	4.98	0.05	0.07
1/2	12	1700	7.56	0.07	0.10
9/16	14	2210	9.83	0.10	0.14
5/8	16	2815	12.5	0.13	0.19
3/4	18	3455	15.4	0.16	0.24
7/8	22	4930	21.9	0.21	0.32
1	24	5760	25.6	0.27	0.40
1 1/16	26	6720	29.9	0.30	0.44
1 1/8	28	7680	34.2	0.34	0.51
1 1/4	30	7640	38.4	0.40	0.59
1 3/8	32	9600	42.7	0.46	0.68
1 1/2	36	11840	52.7	0.47	0.85
1 5/8	40	14440	64.2	0.57	1.06
1 3/4	44	19960	75.4	0.71	1.26
2	48	19840	88.3	0.85	1.52