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I am trying to determine what edition of the PTI design guide for Slab-on-ground foundations was applicable in January 2013. I have the 3rd edition handy which was printed in 2004 and 2005, but I do not currently have access to the newer editions (other than the 6th). Thanks in advance for any...

Thanks BA. I don't see any other choice as well, but I can't tell you how many times I have issued a fix for a marginal condition only to show up and find things worse than before the fix. This is mostly true when there is a torch around on a steel job, but the idea is the same. Thanks for the...

I almost had a project (Slab on grade) that had post tension cable ends cut off before the elongations were measured. It turns out that it was someone elses project, but it made me ask myself how I would be able to verify stressing if there were no elongation data. No data is unacceptable, but I...

Thanks for the input. I will look into both Staad.pro and Risa CIS/2 translators.

I have a fabricator that is using SDS/2 for shop drawings. I'd like to take his model and import it into a design program such as STAAD, RISA3D, Ram Structural System (RSS) or similar program. Ram will export Step files, but won't import them. Has anyone imported Step files into design/analysis...

I concur with Ron's final words.. "I would have no hesitation to use either for the appropriate application." As he stated, each method has it's limitation. Welds come in different flavors: full penetration, fillet, plug, etc. Basically, use the right tool for the right job.

Sorry, detail R1 attached.http://files.engineering.com/getfile.aspx?folder=07ef8b73-88a8-4c0b-b902-10d0d1b0427f&file=Detail_R1.pdf

I typically do residential construction in wood, but have been asked to provide a light gauge steel roof framing design. Typically in wood construction, I use purlins as intermediate supports for rafters. Since I have dramatic span differences, I want to provide intermediate support for the...

Your real expert on the questions you have posed is the geotechnical engineer. It is not uncommon for the geotech investigation not to encounter water, but they typically don't stick around or come back to monitor. Not knowing loads or the geotechnical recommendations, I can't really comment...

Thanks to all for your responses.

I have been asked to look at a remodel project that includes wood framed load bearing walls (IBC 2012). The walls have been located and constructed over the existing vinyl tile that covers a conventional slab on ground foundation. The builder did not use pressure treated bottom plates and...

Thanks for the article a7x1984

Makes sense gentlemen. Since the timbers are reclaimed I won't really be sizing the members much, the size will already be established. I like using low design values and either it works or it doesn't. Yes Mike, I will do the analysis and see where the "chips fall". Thanks to all for your input.

I have a client that wants to use reclaimed timbers as structural elements for a project (rustic exposed timber trusses). I told him that, in addition to visual classification of the components, I would need to have some testing done to verify the material. The project is relatively small and I...

I agree with Josh's assessment. Start by checking the reactions of your supports and verify the total of you reactions is as expected. If this is good, work your way back up to your plate connections and find out where the loads went.

I have to agree with JAE on this one. Disregarding Code is a tempting path. Come to your conclusions based on the best information you have and apply it using accepted practices. I would agree with turning something down because it doesn't feel right or deferring for additonal review, but I...

I'll post what I can after my meeting. I always think it's a great idea to listen to the expertise of the man doing the work. Yes, sometimes they don't realize why we ask them to do it the "hard way", but they often give insight on ways that things can be done more efficiently or more cost...

In my part of the country the expansive clays never stop moving. Two years ago we had an extremely wet year after about 6 years of drought and any building on the expansive soils was moving. THe more site improvements, the less the movement, but they moved. There are some buildings built on...

Michael60 and rapt, thanks for your pointers. Good overall information to consider. I am working with unbonded cables. I do understand the potential for distress at rigid shear wall and similar elements. Regarding delay strips, how do you incorporate them at a shear wall. If I'm working with a...

I have done two way slabs on low-rise buildings with conventional reinforcement (rebar), but I have not done these types of slabs with cables. What pitfalls are the most prevalent for post-tensioned slab construction.