Explore the fundamentals of fire sprinkler system design, focusing on the transition from the library to the cafeteria area. Gain insights on how to manage different ceiling heights and how to plan and execute piping plans for efficient sprinkler coverage.
Key Insights
- The design process for fire sprinkler systems usually involves two designers, where one executes the design and the other reviews and suggests improvements.
- Designing the sprinkler system in a cafeteria with varying ceiling heights involves careful planning. The ceiling height can influence the elevation of the main pipe, which may need to be adjusted to be above the ceiling.
- Efficient sprinkler coverage in this scenario requires the creation of branch lines connecting to the sprinklers. The use of a detail line tool can be helpful in accurately laying out these branch lines.
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So in the last video, you should have finished the piping in the library area. And now we'll be going up to the cafeteria. And if you've made it this far, pat yourself on the back.
You've been designing this along with me all by yourself. Now, it is good to remember for fire sprinkler systems, generally, it takes two designers. The first designer does the design work, and then the second designer talks about how they could have done it better.
All right, so this area should be a lot more simple than the previous area, but let's first take a section view to see what we've got going on. So I'll pull in to about right here should be OK. If we look at here, we have a higher ceiling area in the lower ceiling area and a higher area in the back.
So what we'll have to do is we'll take our main. Now, we can't stay at this elevation. We're going to have to come up above the ceiling.
So go to the measure tool again. The ceiling is at 14 feet, so we'll probably have our main up at around 14,8 to 15 feet. We'll confirm that in a bit.
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OK, so our level one piping plan, let's go on ahead. And save. OK, so why don't we start with our main here? Currently, it's capped.
So let's delete that cap there and we will draw a pipe into the cafeteria area here. OK, we'll start off like that. Let's go on ahead, delete the 90 and let's elevate this piece to 14,8. OK, now on this side, let's go ahead and pull it till about here and let's drag this way.
So about here should be good. And now when I draw this piece to the center line here, we should have a vertical piece that connects the two. OK, and in this case, they should be fire protection T's.
We can go on ahead and take a look at our 3D view. We've got it open. There we are.
We come up with a 90 and we've got a T. Now we just have to have our branch lines connecting to these sprinklers here. So far, so good. All right, so let's use our detail line tool to lay out the branch lines and then we'll draw them afterwards.
So I like to start with the most common denominator of sprinklers to get my eight inches. We'll start from here. Let's go to DL.
I will start at the middle of this sprinkler. Find that triangle, drag it to just about here. You can pull a little bit back.
OK, that's good. Then we will do another one. Looks like this is the most common row.
So I'll move into this sprinkler. Set my detail line there. OK, let's go on ahead and copy this one.
Find the endpoint. All right. And we'll go to here again.
Find that middle point. Might have to zoom in and out. And we'll do this one.
All right. Escape, escape. Let's just take a look.
We should have one, two, three, four, five, six, seven branch lines. Looks good. It's going to select all of them and we will move them up eight inches.
OK, let's go to system. Pipe. Let's change our fire protection pipe type to outlets.
We will use one and a half inch pipe, and let's have this at the same elevation. We'll choose 14 eight. Let's not connect quite yet.
We'll draw this one. It's about a little past the sprinkler there. OK, now it's just a matter of copying this to the center line.
The detail lines are right. Pretty good. Let's click on the main so we can see our trim extend multiple elements.
Let's go ahead, click on the main. And then. Not the detail line.
Make sure you get the branch line and let's connect all of these into our main. OK, now we're not going to cap the main here. We're actually going to be drawing this up to the gym area later on.
But we'll cross that bridge when we get there. OK, we're looking pretty good. Now it's just a matter of connecting into.
So let's go ahead and clean up a bit for our detail line. Let's find one and select all instances visible in view and delete. They're just temporary for us to locate where we're going to place things.
All right. Sprinkler connect into. And if you'd like to skip ahead, feel free.
But what I'm going to do is all the sprinklers connect into the branch line. And don't forget when you're done to make them all one inch.
