Air Admittance Valve
Air Conditioning System
Air-Entrained Concrete
Air Circulation, Forced
Airborne Sound
Airgap, Water Distribution System
Air-Supported Structure
Air Chase
Airgap, Drainage System
Air Break (Drainage System)
Agreement
(1) A legally enforceable promise or promises between two or among several persons. (2) On a construction project, the document stating the essential terms of the Construction Contract which incorporates by reference the other Contract Documents. (3) The document setting forth the terms of the Contract between the Architect and a consultant.
AIA (American Institute of Architects)
An organization to unite in fellowship the members of the architectural profession in the United States.
Agricultural Building
A structure designed and constructed to house farm implements, hay, grain, poultry, livestock or other agricultural products. Such structure shall not include habitable or occupiable spaces, spaces in which agricultural products are processed, treated or packaged; nor shall an agricultural building be a place of occupancy by the general public.
AIA
(1) The American Institute of Architects. Founded in 1857 and headquartered in Washington DC, the AIA offers resources for architects and is an advocate for the value of architecture.Architects also use the AIA designation to indicate that they are both members of The American Institute of Architects and licensed to practice the profession.(2) American Insurance Assn., successor to the National Board of Fire Underwriters and a nonprofit organization of insurance companies.
Aggregate
A mixture of sand and stone and a major component of concrete. Sand, gravel, crushed stone or other material that is a main constituent of Portland Cement, concrete and aggregated gypsum plaster. Also, polystyrene, perlite and vermiculite particles used in texture finishes.
AGCA (Associated General Contractors of America)
Is a national trade organization of qualified construction contractors and and industry related companies dedicated to skill, integrity, an responsibility. The AGCA is the voice of the construction industry and is dedicated to improving the quality of construction and protecting the public.
AGA (American Galvanizers Association)
A non-profit association representing the post-fabrication hot-dip galvanizing industry.
Agglomeration
A process that bonds ground iron-ore particles into pellets to facilitate handling.
Affordable Housing
In general, housing for which the occupant(s) is/are paying no more than 30 percent of his or her income for gross housing costs, including utilities. Please note that some jurisdictions may define affordable housing based on other, locally determined criteria, and that this definition is intended solely as an approximate guideline or general rule of thumb. https://healthymaterialslab.org/tool-guides/hml-resources
Aesthetics
The sudy or theory of beauty.