This project is for the reingineering of existing trusses and adding new ceiling/floor joists to add 286s.f. of living space to the upper level of an existing townhouse. The common wall between units is not to be disturbed and any penetrations will be protected. Smoke detectors per R317.1.1 hard wired and interconnected are required throughout. R-1B ok per akt. Separate electrical, plumbing, and mechanical permits are required. All per the approved plans as marked and the attached engineering and calculations. pep