Document mp6NaQ6jrYNoDR6OGZYjvNraZ

American Society of Heating and Ventilating Engineers Guide, 1930 o. 00 I-- to to Per Cent. Capacity 450 D iam eter o f B ranch Pipe F ig. 2.. M a in and B ranch Pipes for Equal F riction per F oot of L ength D ia m e te r o f B ra n ch Pipe F ig. 3. M a in and B ranch Pipes for Equal F riction per Foot of L ength Chapter 27--Air Ducts 451