Hello,
I was wondering about firestopping metallic pipes with a coupling penetrating a barrier (in general, for both concrete floors and gypsum walls). I haven’t been able to filter for this specific condition. However, several systems, such as W-L-1412 and W-L-1410, clearly depict a pipe with a coupling in the drawings, even though they do not mention any specifics in the text. Based on this, I...