Model Reference Manual
Piping, Ducting and Cable Trays
: Selecting Component and Tube Details from Specifications
Selecting Component and Tube Details from Specifications
Selecting from Specifications is fundamental to all Piping design work. When the user created a Component element (say an ELBO), the user must then give the CHOOSE (or SELECT) command to form a link from the Component to the Catalogue description of the item, via the chosen Specification.
As the correct choice of Component can involve a large number of considerations, each Selection would be very arduous if conducted manually. MODEL assists the user by automatically examining the current element and its immediate neighbours for default parameters, then searching for an appropriate item in the Specification.
Of course, ultimate control rests with the designer, who can fully or partially override this choice. However, in the majority of cases, the default Selection will be suitable. In a similar manner, the straight TUBE between adjacent Components is Selected from a Specification. This is usually done automatically at the same time as Component Selection, so the designer only needs to be concerned with separate TUBE selection in certain special circumstances detailed in this section.
Most of the examples here assume that certain common conventions are followed, (e.g. P3 of a TEE is the off-line p-point). It is advisable to discuss the structure of your own company Catalogue and Specifications with your Catalogue Administrator before reading this section. In order to make the correct Selections, the user will also need a printed copy of each Specification that is required to use.
1974 to current year.
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