How to Use the System Estimator?
So in short, this is probably my favorite and I think is the most powerful tool in our entire Toolkit package.
We're really excited about this one around here.
We're adding to this all the time, but it's kind of a conglomeration of everything that we're about on the website and what we're going for with this whole Toolkit package.
None of our efforts here are really trying to duplicate or replicate what we're able to do with hydraulic calculation programs.
If you use AutoSPRINK, HydraCALC, SprinkCAD, HASS, a whole number of excellent hydraulic calculation programs; those are great for submittals,
They're great for formal layouts they're great for submission for permit sets.
They're built to be the best and they're great.
This is a different application.
We don't always need to do a full set of hydraulic calculations.
In fact, we if we're really early in a project, or we're doing some preliminary planning, or we don't even know how the building is going to shape out yet, we don't have a set of floor plans, but we need to know.
Are we going to need a fire pump?
What is the system going to look like?
What kind of considerations do we need to make with this system when we're planning it going forward?
Well, this is the tool for that.
Rather than spending two or three hours putting a detailed set of calculations together and iterating, are we Light Hazard or Ordinary Hazard?
This tool allows us to iterate and try out different scenarios instantly and get instant feedback on what the system needs.
This tool is also potentially useful for training exercises on new hires.
You can change parts of a system very quickly and get immediate feedback on how it's affecting the output of the system.
The pressure and flow demands for the system overall, so the way that this is set up and this is our online version, we've got a similar version on the toolkit that downloads.
This online one in my opinion is the fastest and most powerful and this is at MeyerFire.com/estimate.
So this tool is basically taking all of the most important inputs that go into a system and giving you instant feedback on the pressure and flow requirements for that design.
It's doing a hydraulic calculation, but it's doing it live based on all of your inputs.
The difference between this and a hydraulic calculation program is one we don't have to play with all of the back end information and then two this is making um, somewhat coherent assumptions about what the system is going to be.
So for instance, if we're going from well and this is also I should say pre-populated with this setup to begin with.
So you're not creating something from scratch, you're hopping right in and able to tweak a system to get an answer very quick rather than start from scratch. If we are going from a light hazard wet system to a dry ordinary hazard Group 1.
Well, what's changing here?
Well, a few things.
One is that we're not using our quick response reduction 'cause we don't have a wet system.
Two is that we're going from a density change light hazard to ordinary hazard.
Our sprinkler spacing and our branch line spacing is adjusting so that it meets the confines of Ordinary Hazard Group 1.
And then that we know that our K-factor if we keep that at 5.6 for Ordinary Hazard Group 1.
Well, it's going to react differently. It's got a different minimum pressure for a 5.6 than we do for a larger, so the system when we make those changes, the rest of the calculation is adjusting to match what we need here, one of the things that's that can be easily overlooked if you're manually inputting, going from a Light Hazard to Ordinary 1 system that's dry is that dry increase we'll hear right here.
We can do that instantly and see the implications if we do a dry area increase, going from no increase to an increase.
There's are a few things that is being affected by having a larger area that's being pulled in, and then the flow is also different.
We're adding to the flow because we've got that larger area.
There's also some assumptions on the backside, so right now we're getting a huge amount of loss in that branch pipe.
If our area is the width is smaller and you can see our system - the amount of sprinklers on a branch line is smaller then - uh, you know our demand is coming down significantly, cause that main right here is right in the middle of our remote area.
But let's say we have a really wide remote area in the main way over here, and we're running all of that loss through the branch line.
Well, we've got a higher demand and pressure, and we're also getting beat up really bad on the branch line loss.
So if we go down here to branch lines and say, well, let's bump it up to two inches.
Now 2 inches of large branch line I don't prefer that personally.
But you can see now our branch line loss is coming down significantly, and what's cool with this tool is if you click on it and only scroll, so it's still highlighted. I can hit the up or down arrow and instantly change the branch line size. So if I go 2-1/2 inch branchline I'm at 6 and a half pounds of loss again, super large branch size go down to 2-inch. Something more reasonable 1-1/2 inch. It's not really reasonable anymore. We're able to see these implications for those decisions immediately.
And all of these things are adjustable.
So if your ceiling height is adjustable, that'll affect your quick response area reduction.
You can adjust the height of your source to where, so maybe our hydrant that we tested or city tap is 10 feet below the floor level of the building.
Well, we run that down to 10 feet and now we know the demand that we need at that lower elevation.
Let's say we don't want an initial remote area size of 1,500 square feet for some reason, maybe we're starting at 2,000 and increasing it.
Well, if you start at 2,000 and you do a dry system increase, you're going to end up at 2,600.
Now we're calculating, you can see this schematic right here, we're calculating that at 2,600, and if you want to play with our branch line spacing, or sprinkler spacing?
We can do that all right here.
We're assuming a main diameter of 6 inch.
What if we want to try 4 inch?
What does that look like?
Well, we're getting more main loss here.
What if it's 3 inch?
Well, now we're extreme loss.
You know, we can adjust this just by using the arrows on the up and down.
So again, a lot of this, you know, going down to the riser assembly, we've got a 6-inch riser 4-inch main.
We've got to drive out, so there's a loss with the dry valve.
Let's say if we wanted to try a four inch backflow, what kind of loss are we getting?
Is that backflow average?
Is it the absolute minimum that is basically the best performing backflow?
Or is it conservative?
Is it an RPZ?
That's your worst case model, but we're calculating all of that and spitting it out.
If we're iterating manually with hydraulic calculations just for an estimate, you might not think hey, 4-inch backflow. If you're putting almost 700 gallons per minute through it, it's going to have 14 psi lost.
Well, if you look it up, that's what it is going to be on average.
But if you're iterating, you might make an assumption that's you know up to two liberal and we really don't want to do that, especially if we're planning early on.
But if we go OK, well, we've got a 6-inch.
I'm going to go with a conservative loss that's a 8-pound loss.
That's on the higher end of pressure loss for 6-inch backflows at this flow rate, now we're feeling more comfortable with what we have.
Branch lines and riser nipples you can also adjust what diameter we're looking for here and see the implications up there.
You can change the schedule of that pipe for the branch lines.
You can have a constant diameter pipe so that your branch lines all the way out are 2-inch.
Or you could have this scheduled and these are different schedule options, so I want to go with 1-inch to an inch and a quarter to an inch and a quarter to an inch and a half.
And then it's going to run the numbers based on that.
You could see that that's got a very negative.
Well, not literally negative.
But it's detrimental to our design to use a schedule like that, so this is a one inch, 2-inch and a quarter inch and a half to 2-inch.
Now it's something that's a little bit more reasonable, but if we want to make things easy, keep it at inch and a half or 2-inch.
So again, that inch and a half is hurting us here.
Go to 2-inch.
Well now we've got again a really good idea of what our design is going to be so early on in a project.
If you've got flow test information, you could very quickly iterate this system and come up with an approach on how it would be calculated and know pretty quickly are we going to need a pump, but we're not going to need a pump.
What decisions can I make to help this out? So do I want to stick with a 5.6 or do I want to go with a larger k-factor?
This is something where you can tweak different parts of a system, but again get a real idea of what your demand is going to be.
Also on here there is a print button at the bottom.
Where you can get a summary of all of this and.
Basically, take your input and get a get an output summary report.
There it goes.
And this is basically cataloging -here's all my inputs, and here's the output of what I'm expecting.
It also includes a schematic of that remote area, the darkened circles, or the sprinklers that are flowing in our hydraulic calculation, but then we're also right here.
Getting a summary of where's all of our loss coming from.
Is it coming from the elevation?
Is it coming from the underground size?
Is it our branch lines or mains?
Or is it the starting pressure or the sprinkler will very quickly get an idea of where our losses are coming from?
In the system overall, so that's the MeyerFire Estimator.
Very powerful tool. One update here recently was the schematic that we've added in and then we also now have a loop option.
So instead of a tree you can run a loop and see that the main losses come down considerably, because that water now has two paths to flow.
The way that that works is our remote area is tide into the loop.
As if this main coming down is now connected to a loop and has two different ways to flow to a riser and then that loop connects right back at the top of the riser so you'll see when we go from a tree over here configuration to a loop.
This diameter is now going to be our riser.
Basically running 6-inch to the top of the riser and then from there it would be a 4-inch and that's how our hydraulic calculations performing in a loop scenario.
So as a quick rundown, that's the MeyerFire Estimator tool.
We think this is really powerful in a number of ways, but for estimating purposes for bidding purposes, this can be a really powerful tool.
Or if you're doing a performance spec, design, where you're not laying out an entire system, but you want to get a good idea on what your pipe sizes will be or what the system is going to look like or what what kind of pump needs you're going to have.
This is this is a great tool to start that out.
I'm Joe Meyer, this is MeyerFire University.
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