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Sprinkler

 

 Workflow

  • Add sprinklers with parameters described below, connect with piping. Adding a control valve is optional.

  • Create a Filled Region with the size of the required design area for the part of the sprinkler system you want to calculate.

  • Use the Filled Region to define a Design Area

  • Calculate the Design Area, analyze the result and modify system if needed and calculate again

  • Define additional Design Areas and calculate to verify needed Flow and Pressure at source

  • Insert tags with node numbers, create schedules with sprinkler or pipe data etc.

 

Supported Systems

 

You may use the calculations on tree, grid and loop systems. Make sure the system is well connected; all sprinklers and piping have the same system and everything is connected. Fitting of type cross is not supported by the sprinkler calculation since it is no longer used in sprinkler systems.  

 

Add Shared Parameters

 

The sprinkler calculation is dependent on a set of shared parameters to execute. If any instance or type in your project is missing a specific parameter, you will get this message:

 Shared_Parameters.png

You can simply apply all the necessary shared parameters to your project by selecting the “Create Parameters” under Sprinkler Calculation. The next thing you must do is add values to the shared parameters.

 

CQProtectionArea

You can find this parameter in the type properties for sprinklers. The CQProtectionArea is the square area the sprinkler type can cover.

 

CQMinimumPressure

You can find this parameter in the type properties for sprinklers. This parameter is the minimum pressure required by the sprinkler.

 

CQActualCoverage

This parameter is “Instance” parameter and can be found on each instance of sprinkler. You can change the actual protection area for a specific sprinkler in your project, but you don’t have to since CQProtectionArea will be used as default value. This parameter can also be changed in the Sprinkler Calculation dialog box.

 

CQK-Factor

The K-Factor can be found in the “Type Properties” dialog for pipes. This is also known as the C-factor.

 

CQIsThreaded

The CQIsThreaded can be found in the “Type Properties” dialog for pipes. This parameter must be manually enabled if we use pipe types with threaded fittings, otherwise the program will use welded pipe types for calculation of fittings' equivalent length.

 

 

CQNodeSequence

You do not have to add a value to this parameter. The program will add a sequence number to each node in the system that was used in calculations.

 

CQPipeNumber

You do not have to add a value to this parameter. The program will add a pipe number to each pipe in the system that was used in calculations.

  

K-factor

The K-Factor can be found in the “Type Properties” dialog for sprinklers. This is not “Shared Parameter”, this is “Family Parameter”, remember to add values. This parameter can also be changed in the Sprinkler Calculation dialog box.

 

Design Area

 

Before you calculate you have to define a design area. To do this you create a “Filled Region” first. Filled Region is Revit function, this tool creates a 2-dimensional, view-specific graphic with a boundary line style and fill pattern within the closed boundary. When region is placed you select it and start function “Design Area”. If you start function without selecting “Filled Region”, remember that you should select “Filled Region” and this can be done in 2D view only.

 Design_Area.png

 

In the Design Area dialog, enter name for the area, value for the Density of discharge and select “Fire Hazard Classification” from drop down menu.

Then you define Selection method to assign sprinklers to the “Design Area”.

You can choose between automatic or manual “Selection Method”. When choosing “Automatic”, all sprinklers are covered with “Filled region” in the active view will be selected and assigned to the “Design Area”. If you choose “Manual” selection method, then you have to select sprinklers manually. You can do it in any view without closing the dialog.

To select more than one element, use one of the following methods:

  • While pressing Ctrl, click each of the elements.

  • Draw a selection box by placing the cursor on one side of the elements to be selected and dragging it diagonally to form a rectangular boundary. You don’t have to filter elements in case you have selected elements from other categories like fittings and pipes, program will ignore them.

    When sprinklers are selected choose “Get Selected Sprinklers”. The amount of selected sprinklers will be shown under “Get Selected Sprinklers” button.

     

Sprinkler Calculation

 

Before you start sprinkler calculation you have to select required “Design Area”. If not, you will get this message:

 

 

 

Select Filled Region and navigate to Sprinkler Calculation -> Sprinkler calculation.  The first time you calculate a Design Area you are asked to select start element. Select a pipe near the control valve (or any other pipe in the system that you want to use as start element for the calculation). The start element is remembered for the Design Area and it can be changed inside the calculation dialog box.

 

 Sprinkler_Calculation_UI.png

 

All sprinklers and their parameters from the Design Area are displayed in a list. Double click in a cell to change K-factor or Actual Coverage. All significant pipes & fittings for the selected sprinkler are displayed in the Pipe and Fitting Data list. The selected element(s) in the Pipe and Fittings list are highlighted in the model. 

Error margin lets you to change the calculation accuracy (Error_Margin.png).

 

Now you can do calculation by using the  button. When the calculation is done the values like “Flow”, “Velocity”, “Pressure Drop” and “Pressure” should be updated in the list on the right side. You can sort elements by any available value by clicking on parameter name on the top of each column.

 

If you have added or removed elements to your model you might want to generate new node numbers (). You can also change start element in the calculation () or zoom in start element ().

 

You can also zoom to any selected element in the list by using  button.

 

On the lowest part of the right side of the “CAD-Q Sprinkler Calculation” dialog you can change rounding of the calculated values. You can enter desired number of significant numbers after decimal point ().

 

Report

After calculation is done the  button is available. Click on the button for a full report of the calculation. At views to add to report you can choose the plans and 3D views to be printed at report.

Report_UI.png

You can  or export to PDF the report as well.

 

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