Weld Washers Needed?

[Zippeee1]

I'm an architectural specifier with a question.

My structural engineer specified a .0295" steel roof deck but indicated that weld washers were not required. At this thickness aren't we right on the AWS/SDI line requiring weld washers?

May I have an opinion?

Zippeee1

 

[minerk]

Since your structural engineer specifically stated that weld washers are not required it seems an odd question to ask a bunch of strangers on the net. Per AWS/SDI, weld washers are required for material with a thickness of 0.028" or less.

 

[Zippeee1]

I didn't mean to imply that he is not knowledgable. He also allowed thermal cutting for bolt holes and later in the Section disallowed it. He indicated there were no shear connectors and later in the Section, specified shear connectors. He didn't, per AISC "LRFD," indicate the construction type (PR or FR).

I have found in 7 years of specifying that my consultants - in whatever field - more often than not provide contradictory sections and it is my responsibility to clarify the intent. I also have to be knowledgeable of 16 Divisions of construction. When I posted, it was a Sunday afternoon, my engineer was not available, and I just wanted some clarification.

Thank you though for pointing out that I was asking "a bunch of strangers" their, what I thought would be, expert opinion. The gentlemen on the Woodworking and Roofing sites are always glad to offer advice and opinions.

 

[UcfSE]

Zippeee1, please take some of the comments on here with a grain of salt, so to speak. We get a lot of questions from home owners and students with no knowledge what so ever looking for easy cheap answers and/or opportunities to cheat. Sometimes it takes some prodding to figure what is what.

If you look in Vulcraft's steel deck catalog, they have some SDI specs published. On page 39 of the catalog, or 41 of the pdf file of the catalog, under section 3.4.A.2 there is the requirement for weld washers for steel deck that is less than 0.028 inches thick, or less than 22 gauge. In that respect, yes you are on the edge of the requirement, but washers are nevertheless not required according to the specs. That doesn't mean they can't be used of course.

http://www.vulcraft.com/catreq/deckcat.pdf