Detailed list terminology

Drawing

This is the physical drawing that an Assembly Mark or Mark belongs to.

Typically, drawings and marks have a one-to-one relationship, unless the detailer is using nested drawings or gathered sheets - in which case multiple Marks are combined on a single drawing.

Assembly mark

This is an Assembly that is made up of several sub-assemblies, and are typically used for larger components such as trusses and frames. Because an assembly mark contains other marks, it is sometimes called a parent mark or super assembly. The marks that it contains are called child marks or sub-assembles.

There are two types of Assembly Mark:

§               A site assembly, where only the child marks are assembled in the workshop, and the parent marks are subsequently assembled on site.

§               A shop assembly, where marks (both child and parent marks) are assembled in the workshop and shipped to site as a single unit.

When you import or develop a Detailed List, you can put marks into lots. Marks in the same lot are delivered to site together. For this reason, the child marks of a site assembly can be lotted together, whereas shop assemblies are lotted at the parent mark level.

An assembly mark has the following additional properties:

§               It is used only to contain other marks. You cannot add mark items to an assembly mark.

§               You cannot assign a phase/zone to an assembly mark.

§               The quantities specified for the child marks are per instance of the assembly mark. For example, you may have an assembly mark (A) that contains two child marks (B and C). If you specify the following quantities:
Assembly mark A: quantity = 5
Child mark (B): quantity = 2
Child mark (C): quantity = 6
the total number of marks that are fabricated is:
Child mark (B): total quantity = 10 (5 x 2)
Child mark (C): total quantity = 30 (5 x 6)

Mark

This is the lowest level assembly, for example, a beam or column. It can be made up of one or more mark items (see below).

When a mark is part of a larger assembly, it is called a child mark.

Mark item

A mark item is a steel or non-steel component. One or more mark items make up a mark.