Method of Folding of Drawing Sheets

When drawings sheets are in more numbers, they have to be folded and kept in order to save the trace required for preserving them. Folding of drawings applies to only the drawings which are released for shop floor for manufacturing of components/reference. Original drawings will never be taken out of drawing office and they should be kept under safe custody. Drawings which are prepared on tracing sheets/transparencies like cloth, polymer, acrylic polymer transparencies should never be folded. They should be kept in polythene folders and kept in filing cabinets. Sometimes the blue prints/photo copies of drawings which are released to shop floor are also laminated for extending their life. While folding the drawings following care should be taken.

• It is required to the fold the drawings such that, they should not get defaced damaged.
• Drawing sheet to be folded such that the title block is easily visible to retrieve it and keeping it back.

Folding Principle of Drawings

The following is the method of folding printed drawing sheets for drawing sheet of size A1, A2 and A3 as recommended by as per IS 11664 - 1986. There are two methods of folding of drawing prints. The first method is intended for drawing prints to be filed or bound, while the second method is intended for prints to be kept individually in filing cabinet. Depending on the method of folding adopted, suitable folding marks are to be introduced in the tracing sheets as guide.

The basic principles in each of the above methods are to ensure that

• All large prints of sizes higher than A4 are folded to A4 sizes.
• The title blocks of all the folded prints appear in topmost position
• The bottom right corner shall be outermost visible section and shall have a width not less than 190 mm.

Fig. 1 Method of Folding of Drawing Prints

Fig.2 Folding of Prints for Sorting in Filing Cabinet as per IS 11664 - 1986

Fig.3 Folding of Prints for Filing or Binding as per IS 11664 - 1986