Wooden blocks secured to masonry structures to provide a nailing surface for the attachment of wood structural members to the masonry wall.
Anchor bolt
A threaded rod inserted in masonry construction for anchoring the sill plate to the foundation.
Anchoring
Mechanical bonding of a coating to a rough surface as contrasted with adhesion which is chemical bonding.
Anemometer
An instrument for measuring the force or velocity of wind; a wind gauge.
Angle discharge tube
Discharge tube that changes direction of the flow 90 degrees.
Angle iron
A structural piece of rolled steel shaped to form a 90-degree angle.
Angle of incidence
In reference to solar energy systems, the angle at which direct sunlight strikes a surface; the angle between the direction of the sun and the perpendicular to the surface. Sunlight with an incident angle of 90 degrees tends to be absorbed, while lower angles tend to be reflected.
Angle of inclination
In reference to solar energy systems, the angle that a solar collector is positioned above horizontal.
Angle seat wrench
Valve seat wrench with a handle that includes a 90 degree bend.
Angle stop
A shutoff valve between the water pipes and a faucet. Its inlet connects to the water supply pipe in a wall, and its outlet angles up 90 degrees toward the faucet. These are usually used to shut off water to a fixture in case of an emergency repair rather than daily usage.
