Straightness D1.5

By kard Date 02-17-2011 00:30

Looking for interpretation of D1.5 straightness tolerance Section 3.5.1.2. Per the code book it says (1/8" / 10) x total length. So if I have a 43'-0" plate I would be allowed per tolerance 1/2" at the center. Can someone tell me if that is what they understand as well. We have a customer that says you have an 1/8" per 10'-0" period.

By Shane Feder (****)

Date 02-17-2011 01:52 Edited 02-17-2011 01:56

Kard,
Tell the customer to read the clause - total length is clearly stated.
Your interpretation is correct,
Regards,
Shane

By 803056

Date 01-22-2012 01:54

I agree.

Al

By eekpod

Date 01-23-2012 13:19

I also agree and A6 covers waviness, flatness, thickness ect, all kinds of other dimentional tolerances for plates and shapes for carbon steel.
ASTM A480 covers stainless steel tolerances for plate and sheets.

By mdagg

Date 01-25-2012 20:03

I have worked as a third party inspector for years, and I think this is a case of a fabricator (judging from the posters names) trying to apply the wrong tol. to a product/material and using it to their advantage.

By eekpod

Date 01-29-2012 21:57

Before it is cut and worked on and it's in raw sheet form would be A6 for carbon steel or A480 for S/S. Once its cut, drilled welded then it becomes an assembly then the welding code would take over D1.1 or D1.6.