I am trying to figure out the lengths of R3 (Spine length), R2 (Center Length), and R1 (Throat Length). I know that D1 equals 6" and that the Center Line Radius is 1.5 x D1. I also know that T1 and T2 are both 9" (I don't think these matter though). Can anyone help me? I'm trying to make an...
Does anyone know the formula for finding the weight of a spiral lockseam duct? I have been looking online for a day, but I can only find weight charts, but not the actual formula. I'm trying to find the Lb/Ft for my company because I think that our weights are wrong. The attachment is a...
I apologize if this isn't the forum to ask this question. I am trying to write an excel formula to determine the steel weight of a duct pant wye. I would like the formula to be able to be used on multiple sizes at once. I have attached how far I have gotten. Please know that the openings are...
