Deepen your understanding of architectural plan reading with our detailed review of an intricate sheet, elucidating elements like knockout walls, sanitary drains, dimensional callouts, and structural grids. Discover how revisions are made, why dimensions are anchored to structural grids, and how detailed information is displayed within enlarged plans.
Key Insights
- The review offers an in-depth examination of architectural plan details such as knockout walls, which are designed to fall during water intrusion due to their lower elevation, and sanitary drains that are typically dimensioned either on plumbing or structural drawings.
- Dimensional callouts to the face of masonry and concrete masonry units are explored in the sheet review, shedding light on how revisions are made and the use of abbreviations and symbols in architectural plans.
- Structural grids play a significant role in architectural plans, with the review explaining how these grids help anchor other dimensions and how they are consistently used throughout different plan drawings. Building sections, wall sections, and detailed information are often displayed in enlarged plans.
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Let's continue our review of this sheet. We have an enlarged detail at image 7 on page A326 of this area. We see that this is a knockout wall.
Because this building is at a lower elevation, knockout walls will fall down during times of water intrusion. You can see that we have, this is the delivery area, but we have sanitary drains in this area. Usually, these drains would be dimensioned on either the plumbing drawings or the structural drawings, most commonly on plumbing.
You can see an area with bubbles around it. So this is a revision to the drawing. Let's just see if we can zoom back a little bit to see how large the area is.
Okay, you can see it's the interior of this entire area. So probably what's happened is that since the last submission or version of this drawing was submitted, they've made modifications in this area. Zoom back into here.
We have dimensional callouts to the face of the masonry, concrete masonry units. FO and CMU, the abbreviations would be provided in the abbreviation listing. We have a detail here.
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It's image 14 on sheet A51. We have a wall section cut right through here, image 5, page A328. Again, wall section because we have the fattened polyline here.
I can see a delta. That would be in the symbols listings, the LB4 callouts in the abbreviations listings. It is somewhat standard to see equal dimensions.
We know that it's 10' 5 from this center line to this grid line right here, 13' 10 from this grid here over to this grid here. There's probably some reason why the grid is not center line here. Let's just pan down and see.
We can see that there is a structural item down here. So that's the structural grid. When we pan back to where we were, we can understand that this would be structural because it's on a grid.
This is not structural because it's not on a grid. This would be structural because it's on the grid. This is one of the material patterns that's being shown.
You're seeing the dimension to the face of stone, but this material pattern would be called out in the materials legend. Let's back out a bit. Again, these would be callouts for exterior elevations, image 2 on sheet A202.B. So an elevation would be that elevation looking this way, elevation looking this way.
We have the property line here, more grids, dimensioning to the grids. These are the enlarged plans we looked at before. Here's a note, emergency exit door above base flood level.
One thing we will find within this enlarged plan is we'll see dimensions for these areas in that enlarged plan. Building section, an elevation. You can see we have the door numbers.
Again, dimensional information for this area will be included in the enlarged plan, which is image 3 on sheet A461. We have the key plan. Again, here is the name and number of the drawing.
So it's image 1 on page A101B. Here's the name of the drawing, the scale of the drawing, an eighth inch equals a foot, and then we have the north arrow. Let's zoom all the way out.
And this has been our overview of the first of our four plan sheets. This drawing is relatively simple. You'll notice that we have the structural grids that are consistent throughout all the plan drawings.
Dimensions are to structural grid to structural grid. Other dimensions are anchored to the structural grids. We have in the enlarged plans where more detailed information will be shown, and then we have a number of building sections and wall sections in the drawing.
So I'll look forward to being with you during our next video.
