Selecting Component and Tube Details from Specifications

Selecting from Specifications is fundamental to all Piping design work. When you created a Component element (say an ELBO), you 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. Design assists you by automatically examining the current element and its immediate neighbors 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, (for example, 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, you will also need a printed copy of each Specification that you wish to use.