Jim shows examples of isometric views that can be included in a set of construction drawings. An isometric view is a three-dimensional view of a structure or of the assemblies in a structure. An isometric view is usually not drawn to scale, but helps you to visualize the overall structure.
- [Instructor] The last view I want to take a look at is what's called the isometric view. And, as you can see on the screen here, we're on sheet A-501A. This is a three dimensional representation of the structure. And it isn't always shown on construction drawings. In fact, in the past it was typical to only see this view on something like a parking structure where it really helped to visualize what the ramps looked like and how traffic flowed from floor to floor. But with the evolution into computer aided drawing and now the ability to design and draw in three dimensions using some of the latest building information modeling software or BIM software, it's really become easier for a designer to add this isometric view to their drawings.
And as you can see here on the screen it's a nice view to help you pull together all the two dimensional views that we've seen so far. Now, like you can see, being able to visualize this structure in three dimensions is really a nice ability to have. And in this case the designers actually given us an isometric view of the structure in various stages to really help us visualize how the projects going to come together. So, it starts with the basement construction on it to framing and then sheeting. And then if we go to the next sheet we see some of the exterior finishes being added.
The roofing being added. Continue on to our third isometric view sheet. We see the roof going on. We see all of the windows going in. The porch being built. And then finally some of the exterior finishes to the structure. So, again, this really is a nice view to have and this is a nice example of really taking us through how the projects going to be built in three dimensions and being able to do it in a two dimension format like a sheet of drawings or on our screen here.
So, one of the things I do want to point out, though, is let's zoom in to our view on the bottom corner. Notice, remember back to our scale information. This says SCALE: N.T.S. So, N.T.S. stands for "not to scale" which means that these three dimensional isometric views are no longer drawn to scale. You can't get any measurement or dimension information off of them. So, anytime you see N.T.S. next to a drawing or a detail that means "not to scale" so, don't try to measure anything from that.
So, while we have this up here let's go ahead and put all four views on the screen. Let's section this up a little bit. And we'll leave our isometric view up in this corner. In this corner we'll put sheet A-201 which was our elevation view and we'll zoom in a little bit. In this corner we'll put sheet A-105 which was our plan view or floor plan in this case.
And in this corner we'll put sheet A-302 which is the cross section view that we looked at. Now, with all four of these views up on the screen you can really start to compare and see what types of information you can get out of each different type of view. So, again, our elevation view with all of its exterior finishes, our cross section view that's a cut through the middle of this house showing us what it looks like from the inside.
And then, of course, our plan view showing us how this house lays out. And then all of that sort of compared to our isometric three dimensional view that helps pull all three of these views together. So, remember this isometric view is not going to be present on all projects but it's a great example to end on to remind us that sometimes we do need to search the entire set of drawings to figure out really what's going on with the structure. And I should also point out something that you may have noticed already.
And that is that not all types of drawings have all of the views that we've discussed so far. So, in other words, the structural drawings may only have a two dimensional plan view and we might have to go to the architectural drawings to find elevations and cross sections. So, just having an understanding of these different views and what they represent is a big step towards really being able to collect information and interpret how a structure is supposed to look. So, now that we've seen each of these different views that might be present in our drawings, let's keep going and take a closer look at the different types of drawings in the set and the information that each drawing type might contain.
In this course, learn how to read construction drawings. Jim Rogers helps you acquire this important skillset by taking you through the different components that make up construction plans, and helping you understand the language of construction drawings. He covers types of views, highlights different kinds of construction drawings—including architectural drawings, electrical drawings, and plumbing drawings—explains how to read general notes, and more.
- Deciphering the language of construction drawings
- Understanding line types
- Reviewing plan views, elevation views, section views, and isometric views
- Reviewing architectural drawings, structural drawings, and mechanical drawings
- Drilling down to the details
- Reviewing reference points on drawings
- Understanding schedules
- The future of construction drawings