> For the complete documentation index, see [llms.txt](https://docs.strata.hendersonengineers.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.strata.hendersonengineers.com/workflows/plumbing-planning/spaces-and-fixtures.md). # Spaces and fixtures Add plumbing spaces and fixtures, then review fixture-unit loads. In the plumbing discipline, each space holds a list of **fixtures**. Strata rolls the fixtures up into Supply Fixture Unit (SFU) totals for the space. This page covers the fixture model and the space-level inputs; see [Plumbing Data View](/workflows/plumbing-planning/data-view.md) for tabular entry, and [Groups and Services](/workflows/plumbing-planning/groups-and-services.md) for the hierarchy above Space. > 📸 **Screenshot — Space with fixtures** A selected plumbing space with the right detail pane showing the Space Type and Space Name, the Fixtures section with a couple of fixture pills (type + count), and the summary metrics (Area, Hot / Cold / Combined SFU). *** ## Spaces A plumbing space is the same kind of entity as in mechanical and electrical — a room or area with a name, space type, area, and floor assignment — but its discipline-specific payload is its fixture list. **Editable space fields:** | Field | Description | | ---------- | ----------------------------------------------------------------------------------------------------------------------- | | Space Name | Free-text name | | Space Type | Sets the space's classification (e.g., Restroom, Classroom). Editable from the detail pane or grid. | | Floor Area | Square footage. Editable directly for spaces that aren't drawn on a floor plan; derived from geometry for drawn spaces. | | Floor | The floor the space belongs to | Create spaces by drawing on the [Canvas](/workflows/workspace/canvas-view.md), adding them in the [Data view](/workflows/plumbing-planning/data-view.md), or importing from a file. *** ## Fixtures A fixture is a plumbing device in a space — a water closet, lavatory, urinal, drinking fountain, sink, and so on. Each fixture entry has a **type** and a **count**. ### Fixture units (SFU) You don't size a water supply by adding up the peak flow of every fixture — they never all run at once. Plumbing codes solve this with the **fixture unit**: a unitless weight for a fixture's probable load, already accounting for how often and how long it runs. A water closet is worth more fixture units than a drinking fountain. Strata tracks three values per fixture type, drawn from the project's plumbing code: | Value | Also called | Meaning | | ------------------------------- | ------------ | ----------------------------------------------------------------------------------------------------------------------- | | Supply Fixture Units (Hot) | Hot SFU | Fixture-unit load on the hot-water supply | | Supply Fixture Units (Cold) | Cold SFU | Fixture-unit load on the cold-water supply | | Supply Fixture Units (Combined) | Combined SFU | Fixture-unit load on the combined supply. Note: this is **not** Hot + Cold — it's a distinct value from the code table. | ### Fixture type and count * **Type** — identifies the fixture (e.g., *Public Lavatory*, *Public Water Closet (1.6 GPF Flush Valve)*, *Urinal (1.0 GPF)*, *Drinking Fountain*). The list you choose from is filtered to the project's assigned plumbing code. * **Count** — how many of that fixture are in the space. A given fixture type can be used only once per space — set the quantity with the count rather than adding the type twice. > 📸 **Screenshot — Adding a fixture** The Fixtures section with **+ Add Fixture** selected, showing the fixture-type dropdown open and a count field. ### Space SFU totals For each space, Strata sums the fixtures: ``` Space Hot SFU = ∑ (fixture type Hot SFU × count) Space Cold SFU = ∑ (fixture type Cold SFU × count) Space Combined SFU = ∑ (fixture type Combined SFU × count) ``` Totals recompute automatically as you add, edit, or remove fixtures. The right-pane summary shows Area plus the Hot / Cold / Combined SFU totals for the current selection. If the space is served from a group or water service, its totals also roll up to those levels — see [Groups and Services](/workflows/plumbing-planning/groups-and-services.md). *** ## Fixture catalogs Two code libraries are available, each with roughly fifty fixtures: * **IPC 2024** (International Plumbing Code) * **UPC 2024** (Uniform Plumbing Code) The catalog covers standard fixtures — lavatories, water closets, urinals, drinking fountains, floor drains — plus foodservice and kitchen fixtures (multi-compartment sinks, dishwashers, ice machines, and similar). Waterless and low-flow variants carry their own fixture-unit weights. *** ## Adding and removing fixtures * **Add** — in the detail pane, select **+ Add Fixture**, choose a type, and set the count. You can also add fixtures inline in the [Data view](/workflows/plumbing-planning/data-view.md) grid. * **Edit** — change a fixture's count from the pill or grid; totals update immediately. * **Remove** — delete the fixture entry from the space. If no plumbing code is assigned to the project, the Fixtures section is inactive and prompts you to *"Select a plumbing code to start adding fixtures"* — set it in [Project Settings](/workflows/projects/project-settings.md). *** ## Related * [Plumbing Planning Overview](/workflows/plumbing-planning/plumbing-planning-overview.md) * [Groups and Services](/workflows/plumbing-planning/groups-and-services.md) * [Plumbing Data View](/workflows/plumbing-planning/data-view.md) * [Project Settings](/workflows/projects/project-settings.md) * [Mechanical Spaces](/workflows/mechanical-planning/spaces.md)