The production of gases from the chemical deterioration of a substance over time, and the release of gases from materials into the air. https://healthymaterialslab.org/tool-guides/hml-resources

Paint composed of resins requiring solvent for reduction purposes.

The removal of unwanted water by means of surface devices.

Interval between two sounds having a basic frequency ratio of two. The formula is 2n times the frequency, where n is the desired octave interval. The octave band frequency given in sound test results is usually the band center frequency, thus the 1000 Hz octave band encompasses frequencies from 707 Hz to 1414 Hz (n = ± 1/2). The 1000 Hz one-third-octave band encompasses frequencies from 891 Hz to 1122 Hz (n = ± 1/6).

Coatings that completely obscure the color and much of the texture of the substrate.

The measurement of spacing for studs, rafters, and joists in a building from the center of one member to the center of the next.

Loose hemp or jute fiber that's impregnated with tar or pitch and used to caulk large seams or for packing plumbing pipe joints A caulking material made from hemp fibers treated with tar.

Outlines current indoor air quality guidelines for the workplace. https://healthymaterialslab.org/tool-guides/hml-resources

Owner, Architect, Contractor. Used most often when referring to OAC meetings, or groups of project leads.

The point at which two walls form an external angle, one you usually can walk around.

A box that is part of the electrical wiring system that contains one or more receptacles.

An extension of a rafter beyond the wall line. Usually a smaller member nailed to a larger rafter to form a cornice or roof overhang.

When an engineer (or municipal inspector) inspects the open excavation and examines the earth to determine the type of foundation (caisson, footer, wall on ground, etc.) that should be installed in the hole.

A prefabricated steel truss made of welded members, used for floor and roof construction.

A manufactured 4' X 8' wood panel made out of 1"- 2" wood chips and glue. Often used as a substitute for plywood.

The use of human health, environmental, and other product information by project teams to select preferable materials and products, and by manufacturers to improve materials and products https://healthymaterialslab.org/tool-guides/hml-resources

Outward projecting eave-soffit area of a roof; the part of the roof that hangs out or over the outside wall. See also Cornice.

A class of compounds comprising only those existing in plants and animals.

A panel made from wood strands that have their strand face oriented in the long direction of the panel.

Plywood panels whose exterior surfaces are covered with a resin-impregnated fiber ply.