Discover the intricacies of placing vertically loaded beams and girders in Revit Structure. Learn how to select and place various types of girders and beams, including W21x44s and W21x50s, and understand their specific roles in an earthquake-resistant frame.
Key Insights
- The article provides detailed instructions on how to correctly place girders and beams in Revit Structure, using the example of a W21x44 girder and W21x50 beam.
- It also explains the important role these elements play in an earthquake-resistant frame, with W21x44s acting as drag members to the moment frame, and W21x50s bearing more tributary load.
- The article further discusses how to frame out openings, such as stairs and elevators, using 18x35 and 14x22 beams, to create a sturdy and safe structure.
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.
Hello and welcome back to Revit Structure. Let's get started. Since we placed our earthquake resisting frame beams, let's place our vertically loaded beams and girders.
Our first girder is going to be a W21x44. So let's go to Structure, Beam. Let's go to our drop down and find our W21x44.
Let's pick it. Let's get started placing. We are going to place the W21x44s along this line because they are acting as drag members to this moment frame.
That means that they are dragging load along their lines to this frame. Let's go to the other side. Let's place them.
And they are girders. So as our parameters show us, we are at the second level. We are placing girders 5 1⁄2 inches below the finished floor because our floor system is going to be a 5 1⁄2 inch deep system.
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Okay, let's place our members in the interior. These will be W21x50s. Again, let's go to our drop down, pick our W21x50 here and get started.
These are a little heavier because they will be carrying more tributary load from each side whereas these are only picking up tributary load from one side. Let's get started. Where we have a beam already set, let's work around it.
Let's place it here. Let's get started on this line. And this line will be the final line.
There you have it. You've placed your girder system. Okay, what we're going to do is we're to place our beams along the perimeters in the interiors so that we can place our beam systems between them.
Okay, and these will be 21x44s and 18x35s. Let's find our 21x44 first. Let's check our parameters.
They are level 2 and since it's not carrying the load of any other beams, it will just be considered a joist. So let's make sure we have our parameters set, 5.5 inches below finish floor. Let's set them.
Start here. Start working our way down our model. Okay, set them here and here.
Okay, those are set. Now, our interior beam line will be 18x35s. Let's find them.
Drop down. We're set. Let's start setting.
Again, here. Since we have already set this beam, let's move across it. Start placing them here and here.
This is a full line, so let's set them all the way across. Again, it's automatically defaulting to the midpoint of the column, which is where you want it. Let's follow this line down.
Here, here, and here. Okay, we've set our beams for our beam systems, but we have openings that we need to frame out also. At this one, we have a shaft here.
So what we'll do is we'll bring in an 18x35 here. We'll frame that out. And in framing that out, we have a lighter beam we need across here.
That will be a 14x22. So again, let's go to the edit type. Load.
Again, we want our structural framing. Steel. We want our W, or wide flange, dialog box to come up.
Here it is. Let's scroll down to our 14-inch deep beams and find our 14x22. Here it is.
Let's pick it. Let's hit okay. Let's come in to our drop down for type.
Pick 14x22. Hit okay. And we're going to set it across the face of the stair from this beam to this beam.
There we have our stair framed. Let's go to our elevator. What we want to do is we want to place an 18x35 across the face of the elevator here from this side to this side.
Now we want to frame the elevator with a 14x22. Again, let's go to the drop down here. Let's frame it from this beam to this beam.
From this beam to this beam. Okay, there you have it. Let's zoom out.
Let's get out of this command. And we've framed our stairs, our elevator, and our interior framing and exterior framing so that we can place our beam systems in the next video. That's it for this one.
We'll see you there.