paper sizes for engineering drawings

[Admin]

Subject: paper sizes for engineering drawings

 

What are the bases of “A” sizes of paper for engineering drawing?

 

• The most famous paper sizes (outside north of America) are the “A” series designated: A0, A1, A2, …etc
• “A” sizes is based on ISO 5457
• ASME Y14.1M gives the “A” paper sizes based on the ISO 5457 as the basis for recommended metric engineering drawing size and format.
• Length of the paper= width * square root 2
• The area of the largest sheet, A0, is equal to one meter square.

 

 

Area = A*B

B = A* √2

Area = A* A* √2

Area = A²* √2

Area of A0 size = 1 m²

A²* √2 = 1

A = √ (1/√2) = 0.84089

A =  0.841 m =841 mm

B =  841*  √2

B = 1189 mm

 

 

See below

 

 

Iso paper sizes (snapshot from ASME Y14.1M)

 

 

 

 

Best regards,
-----------------------------
Admin

PipingStudy.Com