Explore the technicalities of structural engineering and learn how foundation details and the reinforcing bar bending schedule play a critical role in building design and construction. Understand the nuances of structural details, their scale, as well as the importance of shear walls and wall framing in the context of seismic stability.
Key Insights
- Structural details, such as foundation details and the reinforcing bar bending schedule, are integral to the construction process. These details, which provide information like the diameter of the reinforcing bar, are often representative and not drawn to scale.
- Shear walls are vital for a building's seismic resistance. The type of plywood used and the nailing schedule of the shear walls can greatly influence their effectiveness.
- Wall framing details, like the placement of studs at corners and the use of gypsum boards, are crucial for the structural integrity of a building, especially in the event of earthquakes. These details also dictate how different structural elements, such as doors and windows, are supported within the building.
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.
In our third page, we're showing foundation details and also the reinforcing bar bending schedule. When you put reinforcing materials within concrete, there are certain requirements, how that metal needs to work together, and these tables are talking about different bar sizes, and the bar sizes are typically the diameter of the reinforcing bar. A number three bar would be 3 1⁄8 of an inch in diameter, a number four, 4 1⁄8 or 1⁄2 of an inch in diameter, and so this is information that's talking about how they need to handle the bending of the reinforcing bar within the concrete.
One thing you'll notice about structural details is that these details actually are being drawn to a scale. It is not the norm that structural details are dimensionable. Usually, they are representative.
Usually, structural details are drawn not to scale. They, again, are representative. Their notes are telling what must be done, where dimensions are needed.
Those dimensions are called out. Structural is one of the few disciplines whose drawings are usually not to scale. If I zoom into this area, you can see the note right here, NTS.
So again, the drawings are not to scale, but by looking at dimensions, you're seeing how far they want, in this particular example, the steel to continue on and overlap other steel conditions because of the structural requirements that are happening right there, for example, at that intersection. So these are some foundation details. I'm continuing on with some framing details.
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How the structural engineer tends to present their information is from the ground up because that's how we build a building, from the ground up. So the previous page was dealing more so with footing and foundation information. Now we're looking at the connections between the footings and the buildings themselves.
You can see that we're showing right here the shear wall schedule. And again, the shear walls are what helps the building hold up very well seismically. We have a shear wall mark or a shear wall symbol.
And then there's information here as far as the kinds of plywood and the nailing schedule that needs to be happening on those shear walls for them to function properly. So in the plans, we will see these shear wall marks. You can see that we have remarks, which essentially are details that we will find elsewhere within the set.
Again, we're working from the ground level up. I have some more details. These are wall framing details.
You know, for example, if you think of this area right here as being a window or this area in through here being a door, this is simply showing the kinds of framing that are required to appropriately hold up the header of the door. And then I have the jam or the side part of the door here. You can see, for example, that if my opening is here, I have my members, my vertical members here.
I have my hold down connection right here, which is again, keeping the building in place in the event of earthquakes. So again, that's a hold down. So again, this sheet is showing wall framing.
You can see that I'm showing particular connections that are going on right here. This is a framing just showing how, where you have two corners coming together, where this wall intersects with this wall, that this information is showing how they want the studs to be placed to appropriately support one another. What's also happening too is that once you get the framing done, we're gonna end up putting some gypsum board or gyp board along the walls at this corner.
And we'll also take advantage of using this corner condition for nailing our gypsum boards into the appropriate framing.
