Autodesk 235B1-05A761-1301 User Guide - Page 821

Glossary Glossary Terms 3D orbit viewing You can use the dynamic features of the 3DORBIT command to manipulate the viewpoint for an object or an entire model. See also orbit. access panel An opening for access to concealed parts or other equipment without disturbing the wall or building systems component. acid neutralizer A system, either mechanical or chemical, that balances the pH level in water. actual velocity The flow velocity for the pipe that you have selected. Once the pipe diameter and friction loss are calculated, you can calculate the actual velocity. adjust slope To modify the slope (rise or run) of a pipe segment that results in modifying the slope ratio. See also slope. AEC Object Enabler A distributable utility that allows users without Autodesk AEC applications to use Autodesk AEC objects in AutoCAD®, Volo View Express, AutoCAD Map, and other Autodesk applications. AEC objects Objects created through AutoCAD Architecture, such as doors, walls, and windows. air eliminator A device used to remove air from water, steam, or refrigerant. air handling unit A single part composed of multiple pieces of equipment that together move heated or cooled air throughout ductwork in a building. air inlet An opening that air is drawn into or flows into, typically through a fan. air outlet An opening that air is pushed through or flows from, typically through a register or vent. airflow The distribution or movement of air. alternating current (AC) An electrical current that moves first in one direction and then in the other (positive to negative, then negative to positive). ambient air The air outside a building or device. amp (ampere) A unit of measurement for the flow of electrical current in a circuit. amperage The total amount of current (amperes) flowing in a circuit. anchor (1) A feature that creates a relationship between 2 objects. anchor (2) To fasten, or anchor, an object to another object, a layout curve, or grid. The anchored object's movement and/or size is constrained by the object to which it is anchored. angle A pipe bend at 90 degrees that is used to connect pipe segments. Angles are used because 90-degree elbows are typically not used in plumbing. Glossary | 803