I wonder about stack effect, it must be small since the building code doesn't mention it at all, or it is baked-in since taller buildings have higher net pressures to consider. I'm sure it is a combination of higher winds at higher elevations as well as internal pressures due to a variety of...
For C&C wind pressures generally the taller the building the higher the net pressures. Here's my question, when I have a 16 foot tall screen surrounding an area about 1/3 of roof with huge mechanical equipment behind it, is it fair to use the actual roof height for determining my C&C pressures...
Forgive my ignorance. I do structural engineering and have very little knowledge about HVAC. I often work on commercial buildings that may have large HVAC units on the roof or beside the building. When designing components and cladding the internal/external pressures of the building determine...
Thank you, that is very helpful.
Regarding BAretired's question about galvanic corrosion. So far as I know, it is standard practice in the industry to not use any wrap. The steel is protected from heavy corrosion by being contained inside the aluminum. Also the relative amount of aluminum...
Here is the background. With design of glass facades for buildings you often need to strengthen the vertical members (mullions) that transfer the wind loads to the floor slabs by inserting steel cross sections that fit snugly so the steel member and the aluminum member act together, but they...
My question is related to multi-story building fenestration (curtain walls). The wind load procedures for the Components and Cladding in the ASCE 7 seem to indicate that the internal pressures are dependent on the building's overall height and that all floors will have the highest pressure...
Thanks wroggent
I misspoke. I meant to say that the work we install is independently calculated and or designed by outside PE's. My company helps to set up a system based on our experience and construction needs but the engineering checks and calculations are performed by others. Either way...
Thank you again for your insights. The nature of the question goes to the obvious differences that already exist between a stamped drawing or an engineer speaking an opinion on a project they haven't been hired for and have limited knowledge of.
It also relates to the ways in which things play...
I'm a registered PE and am working for a design build contractor in a specialized construction field. All of our work is stamped by outside engineers that we hire or by the Engineer of Record on each project but I am on board to help with sales (and lend additional credibility) and make the...
Correction...just in case I'm not being clear. The question is how you will orient the curve and which part will act as the base. I agree it seems clear that it is an inverted y=x^2 curve. Thanks very much.
Thanks for your help. You would think it would be straightforward and simple but the question we were running into is was this a curve based on y=x^2 between x=0 and 1 (as yours is) or is it a curve based on using the upper half of the y=sqrt(x). Both are the same curve but really it comes down...
This has been driving me crazy. So I'm dealing with load rating continuous highway girders over bents that have parabolic haunches at the interior locations. The problem is, what equation do you used to describe the depth of the section?
