Final answer:
In engineering, multiple welds can be considered as one if the distance between them is less than or equal to three times the thickness of the thinner part being joined.
Step-by-step explanation:
In engineering, when multiple welds are made in close proximity, they can be considered as one continuous weld if the distance between them is less than or equal to three times the thickness of the thinner part being joined.
For example, if the thickness of the thinner part is 10mm, then multiple welds can be considered as one if the distance between them is equal to or less than 30mm.
This guideline ensures the strength and integrity of the welded joint and prevents the accumulation of excessive heat in a small area.