Explore the latest installment of the VGCI video course content for the Revva MAP course, Mechanical, where we dive deep into the functions, configurations, and applications of on-duct diffusers and the return air system. We give a comprehensive explanation on how to manipulate and optimize different parts of the system, including the placement of grills and transfers to enhance the efficiency of air circulation.
Key Insights
- The course focuses on understanding the role and functionalities of on-duct diffusers and the return air system in mechanical designs. It emphasizes the significance of these components in ensuring efficient air circulation in different spaces.
- Shifting focus to the grills placed above the ceiling plane, the course guides learners on how to adjust these elements to allow air transfer from the classroom space to the corridor. This functionality is crucial for the movement of return air in a plenum-based return system.
- The course also provides detailed instructions on how to adjust and correct the placement of grills and transfers using Revit’s ‘mv’ command. This process involves selecting, moving and copying items to ensure they are positioned in the correct location for optimum air circulation.
Note: These materials offer prospective students a preview of how our classes are structured. Students enrolled in this course will receive access to the full set of materials, including video lectures, project-based assignments, and instructor feedback.
Welcome back to the VDCI video course content for the Revit MEP Mechanical course. In the previous videos we went ahead and finished up the rest of our system here, getting in our on-duct diffusers with the gym and then creating our roof, our plenum there to have our return air be drawn in. What I want to go ahead and do next is we're going to clean up a couple of things and then we're going to jump into some family items, talking about some other rooms and spaces that we have but we're going to kind of focus heavily on families and the sense of what families are out there that we can get from maybe manufacturers and then also maybe some other families that we can create ourselves based on some existing documentation that we have and kind of comparing the differences between those two, looking at something that's produced by a manufacturer that may have a little bit too much or might be a little bit too detailed for really what we needed to do and then other families that we create that are a little simpler, you know, they get what we need to have in the model from a design standpoint but we will be taking a look at that and how to build those and talking about families.
So what I want to go ahead and do is I'm going to go down to my ceiling one mechanical and one thing we didn't really create on this side that was already created for us up here, this is again kind of created as a guide kind of a way for us to kind of see what was going on already but one thing that we didn't create is going to be these transfers. So what these are, these are just grills that are actually above the ceiling plane and since this is a return plenum here, these grills allow air to transfer from the classroom space to the corridor and as air is drawn by this return, this air can move freely into that space providing our return air. So there's a couple of different ways of doing the return air system where you can do this one is like a plenum based return down here we have a ducted return which actually is ducted all the way up to the unit.
We need to go ahead and kind of clean these up a little bit for some reason these just weren't in the right spot. So what I'm going to end up doing is I'm going to go ahead and move these into the correct location so that they are on the correct sides of the wall. Since these are not hosted to the wall and they're just at a set elevation of like 11 foot 3 and 59,256 we can go ahead and just move those into place.
So I'm going to select both of them. I'm going to use my move or mv command and I'm going to pick on I have my Thin Lines on so I can kind of see everything. So I select them holding CTRL mv for my move command and I'm going to take this and I'm going to take the back edge of this face trim here and move it to the wall and there we go.
So let's go ahead let's go through and do that for the rest of these. So again I'm going to select both of these here and here move back to there perfect this one was already done and I could also grab if these are all on the same line it seems like these are all off by about the same. I'm just actually going to grab them all mv and I'm going to move like all three of those at once down to there.
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I could also use my selection methods. If you haven't noticed yet your use of Revit if you click and hold and drag to the right you'll notice I get this solid window that or the border of the window is solid. So what this means is this is just a window selection.
So anything that is fully encompassed by this window I will go ahead and select. If I drag hold and drag to the left you'll notice that I get this dashed window and this is what is called a Crossing Window. In this Crossing Window anything that is crossed as the name implies will be selected.
So I'm going to go ahead and use my regular window selection here I'm going to select all four of those diffusers you can see I have four here and I'm just going to go mv for move come down there we go I'm going to come over to here I'm going to use the same methodology I'm going to click like say out here drag down and to the right and you'll notice that since I have that crossing it only selects the items that are fully encompassed there we go mv let's go ahead and move that up and then to finish it off I'm going to come down here these lessons and I can actually get really kind of big with this selection method and I can actually go like this and notice since those diffusers are the only items that are that are fully encompassed I'm going to select those mv and move those up to the wall edge and there we go so we've gotten all those in place now what we want to go ahead and do to finish this out is I want to take these and I want to place a copy on each of these rooms so what I'm going to end up doing is I'm going to zoom in on one of these and I'm going to select using that same method I can use the select there I'm going to go ahead I'm going to go to copy here and then I'm going to select a reference point kind of that's going to be an intersection of the wall and the unit I tend to kind of like to use this midpoint when you are selecting items to copy do think about your base points and what you may have on the opposite side or wherever you're copying to so that you can place in the correct location the first time so I'm going to pick this midpoint on the back I'm just going to come down here so we need one per classroom so I'm going to go ahead and go it's wanting to hold to this angle, but pick there I'm going to come over to here pick there and I'm just going to work my way down and just kind of pick some points they don't always have to be the same remember these are above ceiling so they aren't visible to the end users I'm going the midpoint of the wall we want to go ahead we're going to go down here place one here place one here there and just keep working your way down and just keep copying until you get them all in there we go now we can't really we could do one we don't need we can do one here let's see here we could get into the offices we might need to take a look at how these ones transfer and what we might end up doing is setting up some transfers between here so the air kind of transfers through the top there up to this guy um I think I'm going to we'll put one right here to transfer air into that space oops I ended up putting on the wrong location so I'm going to control z now the control z does end my copy but what I can just do is I want to copy again I can just pick on both of them hit ENTER I'm going to pick my point again and place there seems like this wall is a little bit thinner than what I had previously so we're going to go ahead and move the this guy just in a little bit to that wall edge there we go okay I'm going to stop this video here when we come back we'll finish this up and get into the families. See you then