Design Specifications are used in Takeoff to change the type of material used for an item or in an assembly. The "design specification" Takeoff method allows you to create generic Takeoff Keys (or most commonly used fittings, pipe, valves, etc.) to do Takeoff. At any time, these design specifications can be altered or re-applied to existing Takeoff. This gives you the ability to change specifications on the fly.
This selection allows you to create and edit Design Specifications. Up to 100 standard specifications can be established, each with 50 components. You must use the DESIGN SPECIFICATION category in Takeoff. When a design specification is active in Takeoff, the three criteria (category, Key, and size) of the spec must be met before the conversion is made.
Other topics discussing Design Specifications include: