Assembly and construction drawings

Who is reading the drawing?

• Client or• Person who assemble the parts or• Supplier or• Designer who is using this item in more

complex arrangement• Etc.

Information in the drawing

• Varies depends on the purpose of the drawing• Usually it is:

1. Title, draftsmen, date, stage, etc.2. List of parts (specification) 3. General dimensions and connecting dimensions4. Notes: general or practical

Tools used in order to give information:

• Parts identification: use of leaders1. Avoid vertical and horizontal leader line2. Avoid leader lines parallel to the contour or

hatching direction3. Leader lines terminate with dot or arrow in the

interior of the part4. Identification is done via numbers5. Numbers are positioned on shelf or circle

attached to the leader and arranged in a neat manner

• List of parts shall contain:1. Identification number (item)2. Drawing number of the part (it is omitted when

standard items from shelf are used i.e. bolts, nuts, washers, etc.)

3. Title of the part4. Quantity used in one assembly5. Material

• List of parts can be part of the drawing or separate document linked to the drawing via note (example: “For list of parts see 11-102-12doc”)

• Notes Information in notes can vary depends on the

purpose of the drawing and practicality. It could be:– General information of the product like weight,

application options, physical properties, colour and finish options, etc

– Instructions on assembly process– References to other drawings, documents and

standards– Etc.

Example 1. Assembly for construction

Example 2. Assembly for client