Lap welded bottom Plates API 650. Lap width

[adamjin]

The english is funny and does not serve the purpose. the word "need not exceed" is actually meant to be " the minimum".

See also technical queries answered by API. There is reference to bottom lap welds.

10th - Nov. 1998
3.1.3.5
650-I-37/03
Question : Is it the intent of 3.1.3.5 to limit the maximum lap of a double welded lap joint to 2 in. and a single welded lap joint to 1 in. If not, is there a maximum lap requirement for single welded lap joint bottoms and roofs? Would this constraint, if any, also apply to bottom or roof repair or replacements governed by API 653.
Answer: No.

10th - Nov. 1998
3.1.3.5
650-I-49/03
Question: Section 3.1.3.5 of API 650 specifies minimum lap joint dimensions. Is there any limit on the maximum width of a lap joint?2: Can a lap joint consisting of two (2) ¼ in. plates be lapped 3 in.?
Answer: API Standard 650 does not address maximum lap.2: Yes. Any lap that exceeds the minimum is acceptable. Refer to 3.1.3.5.

I hope this answers you question.

[PINTAIUS]

The english is funny and does not serve the purpose. the word "need not exceed" is actually meant to be " the minimum".

See also technical queries answered by API. There is reference to bottom lap welds.

10th - Nov. 1998
3.1.3.5
650-I-37/03
Question : Is it the intent of 3.1.3.5 to limit the maximum lap of a double welded lap joint to 2 in. and a single welded lap joint to 1 in. If not, is there a maximum lap requirement for single welded lap joint bottoms and roofs? Would this constraint, if any, also apply to bottom or roof repair or replacements governed by API 653.
Answer: No.

10th - Nov. 1998
3.1.3.5
650-I-49/03
Question: Section 3.1.3.5 of API 650 specifies minimum lap joint dimensions. Is there any limit on the maximum width of a lap joint?2: Can a lap joint consisting of two (2) ¼ in. plates be lapped 3 in.?
Answer: API Standard 650 does not address maximum lap.2: Yes. Any lap that exceeds the minimum is acceptable. Refer to 3.1.3.5.

I hope this answers you question.

Thanks a lot adamjin!!!

Just I have looking for. I will download just now the PDF and read it.

I always have understood the same as "Tessios". In my mother language, we call this expressions "juego de palabras / play on words or PUN" because I understand that we never lap more than 25 mm in single lap welded joints, but it "crash" against the first part of the paragraph (five times...).

So that, we thought: right; we have two 6 mm thickness plates, single lap welded...25 mm minimum and...25 mm maximum!! (due to my mistake translating "need not to exceed" as maximum overlap) That's a nonsense and the reason for my question.

Thanks again