Mechanical systems drawing

[1] Arrangement drawings include information about the self-contained units that make up the system: table of parts, fabrication and detail drawing, overall dimension, weight/mass, lifting points, and information needed to construct, test, lift, transport, and install the equipment.

In detail drawings, components used to build the mechanical system are described in some detail to show that the designer's specifications are met: relevant codes, standards, geometry, weight, mass, material, heat treatment requirements, surface texture, size tolerances, and geometric tolerances.

and also[2] Line diagrams and layouts indicating basic proposals, location of main items of plant, routes of main pipes, air ducts and cable runs in such detail as to illustrate the incorporation of the engineering services within the project as a whole.

These drawings show the provisions required to accommodate the services that significantly affect the design of the building structure, fabric, and external works.

This includes drawings (and schedules) of work the building trade carries out, or that must be cost-estimated at the design stage, e.g., plant bases These drawings show requirements for building works necessary to facilitate installing the engineering services (other than where it is appropriate to mark out on site).

Information on these drawing includes details of all: About 80,000 jobs are held by mechanical drafters in the United States of America during 2008.

The test assesses the drafter's skill in basic drafting concepts: geometric construction, working drawings, and architectural terms and standards.