Accessibility means a site, building, facility, or portion thereof that complies with the ADA Standards for Accessible Design | ADA.gov, IRC requires compliance with IBC chapter 11 when 4 or more dwellings. International Residential Code (IRC) - CHAPTER 3 (iccsafe.org), and IBC — meet all of chapter 11, INTERNATIONAL BUILDING CODE (IBC) | ICC DIGITAL CODES (iccsafe.org). Accessible Range - For reach ranges, ADAAG 308.1, there is forward reach, side reach. ADA Standards for Accessible Design | ADA.gov Accessible Route - Accessible routes shall comply with Chapter 4. 2010 ADA Standards for Accessible Design | ADA.gov, and IBC — a continuous, unobstructed path that complies with chapter 11. Disability is a physical condition that limits a person's movements, senses, or activities. Dwellings covered by the design requirements means that the public or common use areas of the building can be approached, entered, and used by individuals with physical disabilities. Knobs - Handles require more grip strength to grab and turn the handle. Levers - Handles can be more easily used regardless of the user's grip strength as levers can be pushed. Site Impracticality means of evaluating individual buildings and sites with difficult terrain. Site plan, for purposes of this Division, shall include a Permit Site Plan, a Detailed Site Plan, a Specific Design Plan, a Special Permit Site Plan, a Special Exception Site Plan, and a Planned Development Basic Plan. Slip Resistant Floors mean accessible surfaces must be slip resistant to minimize hazards to people with disabilities, especially those who are ambulatory or semi-ambulatory or who use canes, crutches, and other walking aids. Flooring designed with material properties to help reduce slipperiness and increase traction. Two-over-two's "Dwelling, two-family," is a building containing two dwelling units. For the purpose of this Division, two-over-two's are units stacked one above the other in a vertical configuration, sharing common vertical solid walls extending from the grade to the roof, or horizontal floors and ceilings. The building typologies commonly referred to as two-over-two dwellings or stacked dwelling units are examples of two-family dwellings. Universal Design is the design of buildings, products, or environments so that they can be accessed, understood, and used to the greatest extent possible by all people regardless of their age, size, ability, or disability. Usability means the public or common use areas of the building can be approached, entered, and used by individuals with physical disabilities.