design-parapet

Works a parapet as the junction of two assemblies rather than as a wall that continues past the roof: takes the wall build-up and the roof build-up you already have, then carries each of the four control layers (water, air, vapor, thermal) up the inside face, over the top and down the outside, naming where each one transfers from one assembly to the other and what happens at the coping, the through-wall flashing, the corners and every interruption. Trigger on "design a parapet", "parapet detail", "coping", "where does the air barrier turn at the roof", "through-wall flashing at the parapet", "parapet thermal bridge", "design-parapet", or a wall and a roof named with a request for how they meet at the top. Supplies the ordering and transfer logic and the questions each condition has to answer; supplies no height, no thickness, no slope, no code requirement and no proprietary product. Requires the two assemblies as input and does not design either of them.