by Jerry Peck - Codeman on Fri Oct 10, 2014 9:26 am
The following is from here: (bold is mine)
- MUBC (Maine Uniform Building Code) consists of:
- - 2009 International Residential Code (IRC)
- - 2009 International Building Code (IBC)
- - 2009 International Existing Building Code (IEBC)
- - 62.1 - 2007 (Ventilation for Acceptable Indoor Air Quality)
- - 62.2 - 2007 (Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings)
- - E-1465-2006, Standard Practice for Radon Control Options for the Design and Construction of New Low-Rise Residential Buildings
From the 2009 IRC:
- R305.1.1 Basements. Portions of basements that do not contain habitable space, hallways, bathrooms, toilet rooms and laundry rooms shall have a ceiling height of not less than 6 feet 8 inches (2032 mm).
From the 2009 IEBC
- SECTION 404 ALTERATION-LEVEL 2
- - 404.1 Scope. Level 2 alterations include the reconfiguration of space, the addition or elimination of any door or window, the reconfiguration or extension of any system, or the installation of any additional equipment.
- - 404.2 Application. Level 2 alterations shall comply with the provisions of Chapter 6 for Level 1 alterations as well as the provisions of Chapter 7.
- SECTION 405 ALTERATION-LEVEL 3
- - 405.1 Scope. Level 3 alterations apply where the work area exceeds 50 percent of the aggregate area of the building.
- - 405.2 Application. Level 3 alterations shall comply with the provisions of Chapters 6 and 7 for Level 1 and 2 alterations, respectively, as well as the provisions of Chapter 8.
Relocating the stair and door makes the alteration at least a Level 2 Alteration by itself, with the other work you are proposing, the alteration will be a Level 3 Alteration.
All new work will basically follow the 2009 IRC.
Based on the above, relocating the stairs to the basement will open a can of worms and I would wait until you address your plans with the architect. Raising the entire structure (the extent of you proposed work makes raising the entire structure a viable option) will solve that issue along with allowing for other options.
Jerry Peck - CodeMan
AskCodeMan.com
Construction Litigation Consultant - Retired
Construction and Code Consultant - Semi Retired