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In this lesson, we're going to create a spiral staircase. New to Revit 2013 is the actual ability to create a true spiral staircase. It's actually quite easy. The trick is how the staircase gets terminated and to lay it out so you don't whack your head. The objective of this exercise is to create shaft opening for the staircase, then to model the actual staircase within the opening. Then we'll make some adjustments to the opening to be a little more safe. To get started, find the Revit model called panels and Stringers.
In the Project browser, go to Level 2 under Floor Plans. The first thing we need to do is reset our workplane for this level, because in the previous exercise, we modified it to put in our U-shaped stairs. On the Work Plane panel, click the Set button. We want to set this back to Level, Level 2, and hit OK. The next thing I'd like to do is draw a reference plan up the middle of this, landing that way we can center our opening in the middle of the floor. Click the Ref Plane button, snap to the midpoint of the wall then snap to the midpoint of the wall. Hit Escape twice.
The next step is to add a shaft opening. What a shaft opening does is it cuts through any floor that may go through it. Other items, such as structural items, stairs or framing will not be cut by the shaft opening. On the Architecture tab, click the Shaft button. On the Draw panel, click the Circle button. Let's locate the center of the shaft between these two reference points. So, once you find the intersection, pick that point. Move your cursor up 'til it says 4 foot 0.
Once it says 4 foot 0, hit that point. Hit Escape a couple times. Before we're done, we have a little bit of work to do. Let's set the Base Offset in the Properties for zero. Let's keep the Base Constraints set to Level 1. Let's set a Tab Constraint up to Level 2. Let's give it a top offset of 1 foot, just to clear any flooring that we may have in the way. Click Apply. Once you've made these modifications, click Finish on the mode panel, and we're done. Go to a 3D view and check it out. If you have a hole, you're good to go.
The next step is to create the actual stair. On your Floor Plans in the Project browser, go to Level 2. On the Architecture tab, click the Stair button. On the Components panel, click the Full Step Spiral button. Let's go right to our Properties. The base level needs to be Level 1. The top level needs to be Level 2. Now, let's place the stairs in the opening. Zoom into the opening and find the center point.
Once the center lights up, pick that point. Come straight to the left and type 2, 3 inches. Revit will automatically draw the stairs at 2 foot 3. Hit Enter. The next step is to align the face of the top tread with the 90 degree plane. To do so, click on the Align button. Click the Metal Reference point first and click the line that says 18 next to it. This will rotate the stairs in a 90 degree direction. Once you've completed that step, you're actually done with the stairs for now.
On the mode panel on the Modify Create Stair tab, click Finish Edit mode. Let's go the a 3D view and check out what we've done. That's a great start, but we have a little more to do with this opening. The problem is, you'll fall off the staircase. And if we leave it like this, you'll get to the top of the stairs and fall back down to where you started. So, what we need to do is modify this opening. Go back to Level 2 Floor Plan. Hover over the outside face of the opening and select it. Once you see Modify Shaft Openings, click Edit Sketch. Once we're in the Edit Sketch mode for the opening, we can simply draw two lines and fill in this area with flooring.
To do so, click the Line button. Draw a line all the way up from the quadrant to the intersection on center down to the quadrant icon and hit Escape. The next step is to split this part of the circle up. There is a little split icon RSL is the shortcut for split element. Click the button, pick a spot right here. And then pick a spot right here. (audio playing) Hit Escape a couple times. What this does is this creates an independent piece. Once you've created the independent piece, select it and hit the Delete key on your keyboard.
Once this is done, click the Finish Edit mode and you're all set. Go to a 3D view. Select the stairs and spin around so you can see what you've done. Not too bad. I do enjoy modeling spiral staircases. I wish I had one come up on a real job, I haven't yet but maybe someday. Look what we accomplished though, we drilled a hole and added some clearances for your head. We also managed to get a spiral staircase laid out absolutely perfectly.
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