Duct Installation Design Charts

Equivalent Resistance in Meters

ø mm	90° 1,5 Bend	90°2,5 Bend	30° Branch
080	0,76	0,53	0,61
100	1,07	0,76	0,76
125	1,37	0,91	0,99
140	1,52	1,07	1,22
150	1,68	1,22	1,25
160	1,83	1,30	1,37
180	2,13	1,45	1,60
200	2,36	1,68	1,83
224	2,74	1,98	2,06
250	3,12	2,21	2,29
300	3,96	2,74	2,90
315	4,11	2,90	3,05
350	4,72	3,35	3,51
400	5,49	3,96	4,27
450	6,40	4,57	4,88
500	7,32	5,18	5,49
560	8,23	5,79	6,40
630	9,75	7,01	7,32
710	11,28	7,92	8,23

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