Problem Solving Forum


April 3 - April 7, 2017

When a specification requires Manufacturer X’s system “or equivalent,” what does "or equivalent" mean, and who decides what’s equivalent?


Selected Answers

From Josh Skinner of The Sherwin-Williams Company on April 10, 2017:
I would encourage everyone on the thread to click ...read more

From Kevin Keith of LiRo Engineers, Inc. on April 7, 2017:
Most agencies are required to put "or equivalent" ...read more

From kent webster of corrosion control corp on April 7, 2017:
My company has been painting water storage tanks s ...read more

From Warren Brand of Chicago Corrosion Group on April 6, 2017:
The only entity that should be choosing a corrosio ...read more

From David Boyd of Vulcan Painters, Inc on April 6, 2017:
The owner or engineer is the deciding entity. ...read more

From Michael Harrison of Hempel on April 6, 2017:
It is so complicated and the waters are muddied by ...read more

From Michael Quaranta of OPERATIONS 40 on April 5, 2017:
The best thing to do is review the Code Committee ...read more

From Michael Halliwell of Thurber Engineering Ltd. on April 5, 2017:
It depends on the industry and what's being specif ...read more

From trevor neale of TF Warren Group on April 5, 2017:
This is a mine field! Unless we know the precise c ...read more

From Warren Brand of Chicago Corrosion Group on April 5, 2017:
We won't write specs which have the phrase "or equ ...read more

From S.SANKARA NARAYANAN. of SWATANTRAYA CONSULTANTANCY. on April 3, 2017:
First let me clarify: "or equivalent" means the sy ...read more

From Steve Brunner of WPC Technologies on April 3, 2017:
In the grand scheme of things, the decision is to ...read more

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Tagged categories: Coating Materials; Coating selection; Specification; Specification writing