Explore the finer points of designing and constructing a fire protection system, including precise measurements for pipes and sprinkler placements. Learn how to use detail lines, system pipes, and tools like trim extend to optimize your fire protection design.
Key Insights
- The article details the process of setting up pipes in specific locations, such as a one and a quarter inch outlet at an elevation of 12 feet, using detail lines for guidance and precision.
- It provides strategies for handling details like connecting pipes to sprinklers, overcoming challenges like improper connections, and utilizing tools like trim extend for optimal results.
- The article also enlightens on managing end-of-run scenarios, like choosing between a cap or a reducing 90, and how to handle transitions like reducing a pipe from one and a quarter inch down to one inch using a reducing elbow.
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So let's take this, and we'll move it up. Let's move it six inches. All right, we can select another detail line, and we'll draw down to these sprinklers here.
Again, you might have to zoom in to find the exact center. There we are. I prefer to pan back out to ensure I can clearly see the location of my arm over and branch lines.
There we go. Let's extend the line past the target sprinkler and move it six inches. Now we're set up with guidelines to place our pipe in these locations.
Let's select System, Pipe, and choose our fire protection outlets. We'll set this pipe diameter to one and a quarter inch, keeping our elevation at 12 feet.
We'll use the detail line as a guide. Start right here on the pipe and drag it out to the centerline of the sprinkler. Zoom in as necessary.
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There we go. Press Escape twice. That pipe is now connected.
Next, we'll copy this pipe down to this next location. Ensure you're selecting only the pipe—not the detail line.
Select Copy, click anywhere, and drag down to align with the detail line. Notice it didn't connect automatically, so we'll need to adjust it. You can either drag it manually or use the Trim/Extend tool.
Press Escape. Now let's find our section view. Before connecting these arm overs, let's connect the other sprinklers first.
Locate the next sprinkler. If you're unsure where it is in section view, you can always click it in the plan view. There it is; we've confirmed the correct sprinkler.
Right-click and select Draw Pipe. We don't want half-inch pipe; we'll change it to one inch.
Now that's connected. Let's proceed to the next sprinkler. Draw pipe again.
We can also use Trim/Extend. You'll find the workflow that suits you best. Let's review this offset now.
There's enough distance between the outlets, so we don't need any extra offsets. We can drag this pipe back slightly. We also don't need this much pipe at the run's end.
You can either cap this pipe or use a reducing elbow. Depending on your firm's standards, one may be preferred over the other. For now, we'll click on the pipe and cap it.
Now let's finish connecting these sprinklers here. This pipe is threaded, so instead of outlets, we'll use tees to connect into these pipes. Let's rotate our section 90 degrees and drag it across so we can clearly view these two sprinklers in section.
There they are. Right-click, select Draw Pipe, set diameter to one inch, and select fire protection tees.
If we zoom into our piping plan, we'll confirm we're properly connected with a tee, which is exactly what we want. Now let's connect the next sprinkler.
Zoom out again, select Draw Pipe, set diameter to one inch, and confirm it's using fire protection tees. Great, two more sprinklers to go.
We'll begin with this sprinkler. Notice here it's not what we want. Let's see what happened.
Because this sprinkler is at the end of a run, Revit added a standard elbow and a transition fitting. We don't want this arrangement; instead, we prefer a reducing elbow.
The reason is that the main pipe is one and a quarter inch, while the arm over pipe is one inch. So a reducing elbow is ideal to step down from one and a quarter inch to one inch. Let's select our elbow.
Due to our current preferences, it's set to a standard elbow. We'll simply change it to a reducing elbow. Now you can see clearly—a reducing elbow connecting the one-inch arm over.
We'll repeat this with the next sprinkler. Zoom out in our section, locate the sprinkler, right-click, select Draw Pipe, one inch, and confirm fire protection tees are selected.
Again, we'll change this elbow to a reducing elbow. Press Escape.
Now let's close our section view and zoom out. We have completed the restrooms, corridor, rooms here, and offices down here. With that, we've fully completed our mini-project area.
