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requirements of the technical codes for new facilities, except as specifically provided in this section. 102A.2 Additions, Alterations or Repairs. Additions, alterations or repairs may be made to a building its building and/or property service equipment without requiring the existing building or its building and/or property service equipment to comply with all the requirements of the technical codes, provided the addition, alteration or repair conforms to that required for a new building or building service equipment. Additions or alterations shall not be made to an existing building or building and/or property service equipment which will cause the existing building or building and/or property service equipment to be in violation of the provisions of the technical codes nor shall such additions or alterations cause the existing building or building and/or property service equipment to become unsafe. An unsafe condition shall be deemed to have been created if an addition or alteration will cause the existing building or building service equipment to become structurally unsafe or overloaded; will not provide adequate egress in compliance with the provisions of the Building Code or will obstruct existing exits; will create a fire hazard: will reduce required fire resistance; will cause building service equipment to become overloaded or exceed their rated capacities: will create a health hazard or will otherwise create conditions dangerous to human life. A building so altered, which involves a change in use or occupancy, shall not exceed the height, number of stories and area permitted by the Building Code for new buildings. A building plus new additions shall not exceed the height, number of stories and area specified by the Building Code for new buildings. Additions or alterations shall not be made to an existing building or structure when the existing building or structure is not in full compliance with the provisions of the Building Code except when the addition or alteration will result in the existing building or structure being no more hazardous based on life safety, fire safety and sanitation, than before such additions or alterations are undertaken. EXCEPTION: Alterations of existing structural elements, or additions of new structural elements, which are not required by Section 102.4 and which are initialed for the purpose it increasing the lateral- force resisting strength or stiffness of an existing structure need not be designed for forces conforming to these regulations provided that an engineering analysis is submitted to show that: 1. The capacity of existing structural elements required to resist forces is not reduced, and 2. The lateral loading to required existing structural elements is not increased beyond their capacity, and 3. New structural elements are detailed and connected to the existing structural elements as required by these regulations, and 4. New or relocated nonstructural elements are detailed and connected to existing or new structural elements as required by these regulations, and 5. An unsafe condition as defined above is not created.