Above-Grade Wall: A wall that is mostly above grade and enclosing conditioned space.

Access: That which enables a device, appliance or equipment to be reached.

Access Aisle: Designated space for people to safely enter and exit a vehicle adjacent to handicap reserved parking spaces.

Access Level: The level at which one steps onto a roof, parapet, or other type of landing.

Access Panel: A closure device used to cover an opening into a duct, an enclosure, or equipment.

Accessibility: Level of access a building offers people with disabilities.

Accessibility Barrier: Any physical or structural obstacle that hinders individuals with disabilities from accessing or navigating the environment.

Accessibility Inspection: A non-invasive, visual examination of the physical barriers to people with disabilities.

Accessible: In the opinion of the inspector, can be approached or entered safely without difficulty, fear or danger.

Accessible Entrance: A building’s entrance specifically designed to provide access to the interior of a building to people with disabilities.

Accessible Route: The continuous, unobstructed passageway constructed to provide access to a property and its public features to individuals with disabilities.

Accessible Route of Travel: A continuous, unobstructed passageway constructed to provide access to a property and its public features to individuals with disabilities.

Accessory Structure: An additional building to the primary building.

ACGIH: American Conference of Governmental Industrial Hygienists

Activate: To turn on, supply power, or enable systems, equipment or devices to become active by normal operating controls; examples include turning on the gas or water supply valves to fixtures and appliances, or activating electrical breakers or fuses.

Active Meeting Stile: The vertical edge of a double door where the active leaf is located and engages with the locking mechanism or other hardware.

Actual Knowledge: The knowledge possessed by an individual, as opposed to that discovered through document review.

ADA: Americans with Disabilities Act (U.S.)

Addition: An extension or increase in the conditioned space of a building.

Adhesion: The property of a coating or sealant that allows it to bond to the surface to which it is applied.

Adverse Conditions: Conditions that may be dangerous for the inspector and may limit the walk-through survey portion of the inspection.

Adversely Affect: To constitute, or potentially constitute, a negative or destructive impact.

Aggregate: Crushed stone, slag or water-worn gravel that comes in a wide range of sizes and is often used to cover the surface of built-up roofs.

AHJ: authority having jurisdiction

AHU: Air Handling Unit

Air Barrier: A low-slope roof accessory component that prevents or limits air leakage through the building envelope and serves to control the infiltration and exfiltration of air flow.

Air Cleaning: An IAQ control strategy to remove various airborne particulates and/or gases from the air. The three types of air cleaning most commonly used are particulate filtration, electrostatic precipitation, and gas sorption.

Air Exchange Rate: Used in two ways: 1) the number of times that the outdoor air replaces the volume of air in a building per unit time, typically expressed as air changes per hour; 2) the number of times that the ventilation system replaces the air within a room or area within the building.

Air Intake: An opening in a building’s envelope whose purpose is to allow outside air to be drawn in to replace inside air.

Aisle: An exit access component that provides a path of egress travel.

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