@Antifed, thanks for the reply! I am using the 62.1-2022 version of the standard.
And what you recommend makes sense, but I didn't know if there was more specific guidance on this. I work semi-frequently to replace AHU's for systems whose zoning I cannot adjust, so I am often left with zones...
Hello! This is a repeat post, to help answer at least one question that I had in this post. For the ASHRAE VRP calculator, the calculation is broken up by zones, and these zones must be classified as one type or another. If I have a zone that is actually a combination of rooms/spaces with...
The only other thread that I could find on this topic is here. I have a tank that is used to store water for pumped non-potable use. The tank's rough dimensions are 8ft in diameter and roughly 10ft in depth (cylindrical shape). Approximately 1ft from the bottom I have a outlet for the tank that...
lexpatrie and jayrod12, thank you so much. Great insight! It's good to hear from engineers about what should be done. I could be missing something, but the first dimension was not called out anywhere. I learned that what I've meant to say earlier, is asking about the edge rib. I was mistaken in...
jjl317, thanks! Coming from a mechanical building background, I can understand how mechanical drawings are really diagrammatic/schematic in nature, and how much freedom the mechanical contractors were given to build the system. I guess, naively, I thought the structural side of the building was...
Just as further reference, is a picture from on-site showing columns #28 (right column) and #37 (left column), and showing joist systems (from right of picture to left) J25, J29, J34, and J38. You can see (what I think?) is a double-joist near the middle of the picture, and how the joists seem...
This is more or less a follow-up to my previous post (thread507-523158), but maybe understanding this point will help me understand the other point. On the one detail for typical joist construction for this project, I see that the first pan is variable dimension ('30", 20", 15" or 10" pans as...
SWComposites, that's what I would expect, but I found nothing. I think the answer is that the contractors back in the day were expected to perform some of the locating of the joists themselves on-site. I am attaching the full structural set of drawings to this reply so one can see for...
lexpatrie, the spacing is on the schedule at 37" center to center of each joist. I'm recreating part of the building in Revit, and I wanted to model the space more accurately. The joist spacing is given, but the dimension I highlighted in the first picture is not given. Does my question make...
Hey phamENG, thanks for the reply. The joist schedule only tells me the following: pan depth, slab depth, and the width the joist @ spacing dimension. For example an 18" thick joist below a 3-1/2" slab, with a 7" width @ 37" off center. The .pdf I attached to the previous reply shows pretty much...
Hey lexpatrie, thanks for the reply. J21 refers to the joist on the joist schedule. Check out the .pdf I attached with the snipped joist schedule items along adjacent to a single top to bottom 'run' of...
Hello all! Another question from a ME with little experience in structural engineering. For drawings from the early 1970's in the southeastern U.S., how were concrete joist spans dimensioned? I can figure the span length from the distance from beam to beam, but from the top to the bottom of the...
Does anyone here know if there are any useful tables (International Fuel Gas Code maybe?) or methods to calculate BTU or CFH loads from turrets in laboratories? Honestly, any design guide resources on determining natural gas loads would serve me very well. I'm at a loss when sizing natural gas...
Hello all, I've got another Revit modeling question as regards a structural footing. A note in the drawing (from 1968) specifies that:
"The maximum wall footing ste-off shall be 2'-0" vertical spaced not less than 4'-0" o.c. Footing step-offs are indicated on plans by the symbol...
