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Thanks everyone for all the response! This part of the roof DID NOT have a structural ridge beam. It only had a 2x12 ridge board that was used for rafter attachment. Tmoose, you hit the nail on the head(no pun intended). The outward thrust forced a failure at the joint causing a roof...

Hi everyone, My company is investigating the failure of some roof framing after the recent snowstorms. The rafter does not connect directly into the wall plate. Instead the joists bear on the wall, continuous 2x4 runs across the top of the joists and the rafters bear on the continuous 2x4...

BAretired, hokie66; My current employer only deals with precast concrete. This is something that they have no desire to move into. I was given permission to moonlight as long as it was outside of the precast industry and didn't hurt my performance at work. Other engineers at this company have...

Hi everyone, I am a P.E. working full time at a good company that will allow me to work on the side provided it doesn't interfere with my regular work. I recently have been contacted by a rigging contractor to design and certify spreader beams in my free time. I have experience doing this and...

Just a follow up on the text I bought in case anyone was interested. I got Prestressed Concrete A Fundamental Approach, Fifth Edition by Edward G. Nawy. So far the explanations seem to be pretty easy to follow. I do have one problem....There are no answers to any of the problems at the end of...

Thanks everyone for all of the response! dhengr, I was looking at joining the PCI last night. I think I will go ahead and do it. Does anyone know which PCI code is the most current? I found a 2004 print of the PCI Design Handbook on Amazon but wasn't sure if there is a newer one already out...

Hey everyone, In a few weeks I will be starting a new job at a firm that designs exclusively in prestressed concrete. I have never dealt with prestressed concrete before but am eager to learn all I can. Does anyone have a recommendation for a good textbook/design guide? Thanks in advance and...

Hi everyone. I am a structural engineer but have been working at a mechanical firm for years. When things get slow I sometimes work on the Mechanical side under the direction of the MEs. I have been working on a clamp design governed by ASME Section VIII Div 1 Appendix 24. By code I am told...

Sounds like you may not be familiar with contact sets. You can leave the global model as "bonded" and still set individual contact sets to "no pentration" for two touching faces. If you set up "no penetration" contact sets for the faces that are only touching then the other faces will still be...

Thank you DCBII, I think I will stick with RISA! I've just recently heard similar comments from other engineers in my office. I have to wonder why STAAD is still used by so many companies. Is it just that they are familiar with STAAD and don't want to change? I have met arrogant engineers that...

Hi everyone, I have seen some job openings recently that require knowledge of STAAD. I have not used STAAD but am competent using RISA 3D and Solidworks Simulation as I have been doing so for years on large, complicated projects. I was wondering what differences there may be that would be a...

Thank you for the response everyone. OHIOMatt that is the reason why I posted on this forum. I knew I would get a answer from someone with first hand experience on the matter. My state operates in the same manner. I kind of got the feeling from the lady in Ohio that she didn't like being...

Hey everyone. I hope someone may know the answer my questions. What can a civil-structural P.E. stamp in Louisianna? What is the real difference between what an S.E. can stamp and what a civil-Structural P.E. can stamp? The reason I ask is once I made a phone call to the Board of Engineers in...

I am attaching a pdf on flitch beam design that may be of some help to you. http://files.engineering.com/getfile.aspx?folder=3376a473-2cd8-4f65-ab41-e5d83ef7f305&file=Flitch_Beams.pdf

Hey guys. I am looking for a good book on the design of steel buildings such as large wharehouses. I know the basics of steel design but have never designed anything much larger than a moment frame or small steel addition. I have the steel design book I used in college but I am looking for...

csd72, It is a fiber reinforced composite structure for the power industry. No concrete at all. It will be formed in pieces and the assembled before shipping. It will be analyzed for lifting as well. My main concern is the forces that happen due to bouncing down the road.

Hi everyone, I am analyzing loads on a structure while it is being transported on a truck. This is a manufactured item that will barely be small enough for a truck transport. I know how it is planned to be positioned and held down. I will be using RISA 3D for an analysis. I would like to know...

I heard that in some states you cannot practice structural engineering unless you passed the Structural I and II PE exams. Other states allow you to practice as long as you have a PE and are competant in the field you are practicing in. Which states require the Structural I and II?

Thanks. I ran a test run of two identical frames, one positioned so that both the loads and spring reaction are inline with each other, and the other frame at 45 degrees using the x and y components of the spring constant (0.707 x Spring constant). I expected the resultant reaction for the...

I am working on a RISA model in which spring constants need to be used in my boundary conditions. The spring constants I am recieving from an outside source are given as radial and tangetntial stiffnesses due to the cylinderical shape of the structure. As far as I can tell RISA only works in the...