Recent content by Schambach

The reason I've taken a liking to the plate washer idea is because of the use of the Simpson Anchor Designer program which employs those. I am NOT in a high seismic zone so I don't see ductility as a huge deal.

Thanks. I used the wrong terminology. I meant to say threaded rod. I'm using plate washers and nuts for the "head."

When specifying anchor bolts to attach steel columns to concrete, everything I read suggests specifying ASTM F1554. I have specified Gr36 and my supplier says that it is much easier and cheaper to get ASTM A193 B7 bolts. Those I read are not as ductile and are stronger. What would preclude me...

Thanks phamENG. That makes sense........kind of. I hadn't considered a downdraft acting on a building and exerting a positive pressure on the windward side of the roof, unlike that which is tested in a wind tunnel. I like your Cessna example.........I get it. Couldn't one argue though that...

Quick correction. Engineers I know choose to disregard the ROOF vertical projection and only use the wall vertical projects in determining their total shear forces. Is that acceptable is my question?

The pre-2010 ASCE 7 used a minimum wind pressures of 10psf on the vertical projection of the entire building and then in 2010 and thereafter the minimum pressures are 16psf on walls and 8psf on the roof. This thread is not about ASD vs LRFD, I found posts on that, this question is about the...

Thanks for the advice.

I use the VA software for frame analysis and I get along pretty good. When it comes to modeling plates I struggle a bit. I'm curious if there are any users out there that would be willing and open to having dialogue and answering questions off-line and ideally be able to learn from each other...

Great discussion folks! Thanks for answering my question and then some. It has been very helpful!!

Excellent! Thanks. I appreciate that perspective. Have others done the same? I'd like to know how prevalent this is and whether or not it has been successfully used where the IRC or IBC controls. Ultimately, do we as engineers have a legal leg to stand on or could actions such as these be...

To expand upon the subject line, does a note like "I have designed this project according to ASCE 7-10 specifications?" immediately above or below my signed seal limit my liability as to what I am "certifying" by stamping those plans? Does anybody use clarifying notes to limit exposure when...

I am wanting to get some test equipment to do some small-scale testing for various structural connections and assemblies that I've dreamed up. I am not wanting to become a certified testing laboratory, but I'd like to get my hands on some decent equipment. I'm basically looking for a data...

Excellent! Thanks.

Thanks all! Anybody see much 0'-0" out there or do you feel the majority of drawings (if not using NAVD) are 100'-0"? Appreciate the help!

Thanks JedClampett. I work in an industry where we don't know what the local datum elevation is and for ease of construction (single or double story wood structures) we have typically called finish floor 100'-0" so that when defining an elevation below finish floor we don't have to go to...