Would you ever field bend 4" PVC Coated RGS or always use prefab? Have about 250 bends within multiple sets.
It's all on a roof on ground and not up in air, not sure if that makes difference in determing whether bend or use prefab.
I sometimes wonder when you ask a question, if you are asking from a perspective of how to estimate it, or how to install it. Having served as both an estimator and an installer, the answers are different for many of your questions. From an estimate point of view, I would use factory elbows. If I have an offset, I would just get a quote on a 45 and use it for each bend. From an installation view, there are a bunch more factors that go in to it. Like how many elbows, whether a factory 45 or 30 will work or will you need odd bends. Is the bending equipment available for use, etc.
