Arranging space in your building design is one of the most important aspects of spatial design. Making sure you have enough toilets and placed them in a strategic way is an important part of this. The amount of toilets per building type and amount of people required differs per county. The Toilet Analysis as part of the Spatial Requirements Assistant from Xinaps makes it easy to check if the amount of required toilets is met for each different set of rules and regulations and makes it possible to easily switch between them.


Topics in this section

  • Making a Toilet Analysis
  • Local Standards
  • General Interface
  • Toilet Relation Table
  • Settings
  • Grouping Floor Areas
  • Including and Excluding Areas
  • Checking the Toilet and Washbasins
  • Checking entire Floors
  • Checking the number of people
  • Exporting your Data


Making a Toilet Analysis

To start your Toilet Analysis open the Spatial Requirement Assistant and click the Toilets tab at the left. The interface will give you an overview of all toilets and checks the amount of toilets per gender for each building zone, according to your custom local standard.


Local Standards

The Spatial Requirement Assistant offers a tool to check the amount of toilets per gender for each building zone, according to you custom local standard. The current available local standards are as followed:



United Kingdom
UK
British Council for Offices Guide 3.3.1 Washrooms (get book)
United States
US
California Plumbing Code Table 422.1 Business Occupancy
Germany
DE
DIN 18 288 Blatt 2
Netherlands
NL
Bouwbesluit 2012 Artikel 4.9



At the top of the screen in the plug-in you are able to switch to other local design codes, such as German, Dutch or Californian. More local building codes will be added in the future.

By selecting the standard from the dropdown menu the plug-in automatically calculates the floor area and the amount of toilets per gender needed according to the standard.
To create a custom requirement table simply click the "New" pictogram next to the standards. A new window will open in which you can enter the desired data as well as a custom name. The new personal table will be added to the dropdown menu. To edit an existing table click the pencil button. To duplicate or delete a table click on the duplicate/delete button.


Each toilet checker contains two numbers, divided by a slash. The first number is the actual amount of toilets found in the model. The second number is the required amount of toilets for the chosen standard. When the first number is red, there are not enough toilets defined in your project. When the first number is blue, there are too many toilets defined in your project. You can rename the toilet rooms to e.g. "Male toilet and "Female toilet" in order to define the gender per toilet group.

The plug-in automatically finds the toilets, urinals and washbasins in each toilet room. The plug-in skips toilets out of the toilet rooms, as it is unable to define the gender. At this moment two different family types can be checked: Detail Items and plumbing fixtures.


The area per person is a custom Revit parameter, automatically added to each room by our plug-in. You can define the area per person per room yourself in Revit as well. There is a predefined list with area per person you can choose from. You can modify this predefined list. You are able to export this table to Excel or Word.



General Interface:


Toilet Relation Table

Editing a the "Toilet Relation Table" can be done so by following the following steps:

  1. Select the local standard.
  2. Click the "Duplicate" icon.
  3. Click the "Edit" icon.


Alternatively, one can also create a new "Toilet Relation Table" by clicking the "new" tab. Doing so will allow you to fill in your own local standards, if they are missing in the "drop-down" menu. 

After accessing the table one can specify their own local standard "code name". They can also specify the % of males and females occupying the building and the number of fixtures available, with regards to the (toilets, urinals and washbasins) available for males and the number of (toilets and washbasins) per level.  


Where for example according to the "US California Plumbing Code Table 422.1 Business Occupancy": 

  • For every 200 female's 8 Toilets are required. 
  • For every 400 males 5 Washbasins are required.  
  • For every 500 males 11+ Toilets are required 



Where the provision of toilets in a UK commercial office would be as follows:

  • The 1994 standard = 10 Toilets
  • The BCO "60/60"rule (the 1994 standard plus 20%) = 12 Toilets
  • The 2006 standard for 1 person per 10m2 = 16 Toilets
  • The 2006 standard for 1 person per 6m2 = 26 Toilets
  • The 2006 standard for 1 person per 6 m2 (plus 25% if washbasins are included) = 33 Toilets 


Hence a 60% male to female occupancy ratio is required as per UK BCO guidelines, resulting in a 120% total building occupancy ratio. Thus in a 120m2 floor space, 20m2 is required per person hence 6 people can occupy a 120m2 floor space, where if we take a 60% make to female occupancy ratio that will result in (60%x6) 3.6 males and 3.6 females per toilet. Resulting in a total of 7.2 people per toilet that is a 20% occupancy ratio as per the 1994 standards. 


Settings

Different settings and options can be set in the settings menu. To get to the setting menu simply click the "Settings" button and a new window will open.


Grouping floor Areas

The floor areas can be grouped in different ways. The toilets will be checked per group. To select the desired grouping simply click the dropdown menu next to the header "Group areas by .. and by". Floor areas can be grouped by:


  • Area plan
  • Floor level
  • Room parameter
  • Rental fees
  • Construction costs
  • Operating costs
  • Area per person


Combinations can be made by selecting different options in each menu. To not use any grouping or just one option, select the "No grouping" from the menu.


Including and excluding areas

Different rooms can be included or excluded in the floor area. This can be used to include specific rooms such as offices and meeting rooms and exclude areas such as hallways, fire escapes and balconies.

To include rooms select "including" from the menu and under "Room names" type the rooms you wish to include. Multiple names can be inserted by adding a comma (,) between the names.

To exclude rooms select "excluding" from the menu and under "Room names" type the rooms you wish to include. Multiple names can be inserted by adding a comma (,) between the names.


Checking instances by family type.Two different family types can be checked: 

  • Plumbing fixtures
  • Detail items


Select plumbing fixtures to check:

  • toilets
  • urinals
  • washbasins


In the fields next to respectively toilets, urinals and washbasins you can enter the name of the types used in your model. The app will now check the instances with any of these names. Multiple names can be entered by adding a comma (,) between names.

To check detail items select the option "detail items". Detail items are instances drawn in 2D, which depending on your current view settings will be shown or not. To include these instances you select this option.




To make sure the Spatial Requirements Assistant includes all toilets in the project please make sure that they are located in a room which has a defined name. You can name your toilet room to any name you wish, as long as you make sure that the name corresponds with the Male Toilets and Female Toilets boxes in the settings menu. Standard names are already given. NOTE: When toilet rooms are divided into individual toilets make sure they belong to the toilet room as a whole.


To find the plumbing fixtures select plumbing fixtures as the family type from the drop-down menu. Make sure that the name of your plumbing fixtures corresponds with the field of the toilets. This is the same thing for Urnials and Washbasins. If you want to find all detail items in the project make sure you select detail items from the family type drop-down menu. 



Checking the toilets and washbasins

The plug-in instantaneously checks the actual amount of toilets compared to the required amount of toilets according to your selected local standard. When the requirement is met you will see a black number accompanied by the same number next to a slash (/). If the requirement is not met the left number will be shown in red, accompanied by the required number according to you selected standard in black. Whenever to many instances are present in the project the number will be shown in blue, accompanied by a black number, indicating the amount needed according to you selected local standard. Toilets need to be located in a toilet room in order to define the gender. If a toilet is not placed in a toilet room the toilet will be skipped, as the app is unable to define the gender.




Checking entire floors

An indicator at the far most left side of the table will show you in an instant if your floor meets its floor requirements. When your floor doesn't meet the required toilets and washbasins a red indicator will be displayed. When your floor does meet the required amount of instances a green indicator will be displayed. In order to change your indicator from red to green all the requirements on that floor have to be met. If one requirement is not met, the indicator will stay red even if the other requirements are met. 




Changing the number of people

To change the amount of people in the building click on the "edit" button under the header "Area per Person". By default it will be set to 10m2/p, which means for every 10m2 of floor area the app counts one person. You can select different presets of density from the menu or you can add a new custom density by clicking the sheet icon in the right bottom corner. To edit or remove a density from the list you click on respectively the pencil icon or the delete icon on the right bottom corner. After selecting your desired density double click or click the "OK" button to verify your choice.



Exporting your data
Excel
  • To export your table from the Spatial Requirement Assistant to Excel: right click on the table and click "Save as Excel File"
            You can now select a folder on your computer and enter a name.
Word
  • To export your table into a Word document: click on the "Report" button on the bottom right corner of the main interface. 
           The app will open word and you can save your document from here on your computer.