• DFU DATA
  • WSFU DATA
  • ROOM LIST
  • HUMAN REVIEW

How to calculate fixture loads with your AI

Connect this MCP to your AI client to automate plumbing load calculations. It handles the math for individual rooms based on your fixture counts.

Ask AI about this page

Short answer

How do I calculate fixture loads using AI?

Give your AI a list of fixtures and their counts for a specific room. The AI uses the calculate_room_fixture_load tool to output the total DFU and WSFU values. You'll get a precise breakdown of the load for each room.

The results.

Where your data lands.

The AI processes your fixture lists into these specific outputs.

DFU DATA

Total Drainage Units

The AI calculates the total Drainage Fixture Units for the room. This value is ready for your pipe sizing calculations.

WSFU DATA

Total Water Supply Units

The AI determines the Water Supply Fixture Units. You get the exact load needed for water service sizing.

ROOM LIST

Individual Room Totals

The AI organizes the math by room. You receive a clear set of values for every space you've listed.

HUMAN REVIEW

Manual Verification

The AI provides the raw math, but you must verify the fixture types against local plumbing codes. You remain responsible for the final design.

The workflow

What your AI does when the fixture list arrives.

The AI takes your raw counts and runs them through the calculation logic.

  1. Parse fixture counts

    The AI reads your text or spreadsheet to identify how many toilets, sinks, or showers are in a room.

    calculate_room_fixture_load

  2. Assign unit values

    The AI maps each fixture to its standard DFU and WSFU weight.

    calculate_room_fixture_load

  3. Sum the totals

    The AI adds up every unit to find the total load for the specific room.

    calculate_room_fixture_load

  4. Format the output

    The AI presents the final DFU and WSFU numbers in a clean format for your report.

    calculate_room_fixture_load

Try it

Copy these to start.

Use these prompts to trigger the calculation immediately.

Starting points

Replace the room names and fixture counts with your actual project data.

Plumbing Fixture Units Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_Cx3N4FVfJZC8en65Flegv6dvuLHyXDoJKWzAv7oX/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Plumbing Fixture Units capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "plumbing-fixture-units-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_Cx3N4FVfJZC8en65Flegv6dvuLHyXDoJKWzAv7oX/mcp"
    }
  }
}
Copy into chat04

  • Calculate the fixture load for the Master Bathroom with 1 toilet, 1 sink, and 1 shower.

  • Using the fixture list in my 'Kitchen_Layout.csv' file, find the total DFU and WSFU for the kitchen.

  • What is the total DFU for a commercial restroom containing 3 urinals and 2 lavatories?

  • Run a fixture load calculation for the Laundry Room based on the counts in my current project notes.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect Plumbing Fixture Units Calculator once, then ask.

Click the link to connect the MCP to your client. Once connected, your AI can immediately start running these calculations.

Connect Plumbing Fixture Units Calculator to your AI

FAQ

How this task behaves.

  • 01

    Can the AI design the actual pipe diameters?

    No. The AI only calculates the fixture unit loads. You must use those values to perform the actual pipe sizing yourself.

  • 02

    Does the AI update my plumbing drawings?

    No. The AI only provides the calculated values. It cannot modify your CAD files or drawing software.

  • 03

    Can I upload a PDF of a fixture schedule?

    Yes, if your AI client can read the PDF, the AI can extract the counts and run the calculation.

  • 04

    Will the AI use my local plumbing code automatically?

    No. The AI uses standard unit values. You must check the results against your specific local jurisdiction's code.

  • 05

    Can it calculate loads for an entire building at once?

    Yes, as long as you provide the fixture counts for each room in the prompt or attached file.

  • More questions about Plumbing Fixture Units Calculator? The Connector page answers them. See everything the Plumbing Fixture Units Calculator Connector can do

Connect Plumbing Fixture Units to Claude, Cursor, ChatGPT & more