Go with the flow | Archive Titles

Table 1: Branch factors for different relative branch diameters*
					qb/qc
db/dc	0·1	0·2	0·3	0·4	0·5	0·6	0·7	0·8	0·9	1·0
0·3	-0·50	2·97	9·9	19·7	32·4	48·8	66·5	86·9	110	136
0·44	-0·53	0·53	2·14	4·23	7·3	11·4	15·6	20·3	25·8	31·8
0·52	-0·69	0	1·11	2·18	3·76	5·90	8·38	11·3	14·6	18·4
*Extracts from Table 4·47 for tees of pipework, converging flow: the branch factor for different relative branch diameters (db/dc) and different relative branch flows (qb/qc).

Table 2: Branch factors for different relative branch areas*
					qb/qc
Ab/Ac	0·1	0·2	0·3	0·4	0·5	0·6	0·7	0·8	0·9	1
0·1	0·40	3·8	9·2	16	26	37	43	65	82	101
0·2	-0·37	0·72	2·3	4·3	6·8	9·7	13	17	21	26
0·3	-0·41	0·17	1·0	2·1	3·2	4·7	6·3	7·9	9·7	12
0·4	-0·46	-0·10	0·25	0·66	1·1	1·6	2·1	2·7	3·4	4
*Extracts from Table 4·132 for tees of ductwork, converging flow: The branch factor for different relative branch areas (Ab/Ac) and different relative branch flows (qb/qc).