Gooey Goat · MEP solutions

MEP software, built to be checked.

Gooey Goat provides MEP solutions: programs and services for mechanical, electrical and plumbing engineers, built around one verified calculation engine. Everything we make shows its method and keeps its record, so the engineer responsible can retrace any result. Firefinch FHC, for fire sprinkler hydraulics, is the first.

Firefinch FHC How we check

Program · Windows

FHC

Fire sprinkler hydraulics for Windows: lay out, solve and report sprinkler systems, with a report a reviewer can retrace.

Lay out · Solve · Size · Report Explore Firefinch FHC Service · In development

Design criteria wizard

Walk the code's own decision tree and come away with design criteria, every value cited to its table or clause. NFPA 13 (2025) first.

Online with a licence, or inside Firefinch FHC

Programs · Planned

More MEP software

Further programs and services for mechanical, electrical and plumbing engineers. Tell us what you would like next.

FHC Fire sprinkler hydraulics for Windows

Hydraulic calculations that show their working.

Firefinch FHC lays out, solves and reports fire sprinkler systems, and it is fast to draw in: most of a network is placed by commands, not by hand.

Layout

Lays out sprinklers for you

Fills a zone outline with sprinklers that meet your spacing and coverage limits, and connects them to the main.

Size

Sizes the pipes

Auto-size proposes pipe sizes against your velocity and pressure limits. Nothing changes until you apply them.

Project

Many zones, one project

Each zone keeps its own design basis and design area. Solve one, or every zone against one shared pump.

Building

Levels, in 3D

Work floor by floor, then see the whole building in 3D, with each floor's drawing shown at its own height.

Speed

Fast to build

Trace over the architect's PDF, then Array, Stitch and Generate fittings build the rest of the network in bulk.

AI tools

Your AI tool, through MCP

Connect the AI app you choose. It can do nearly everything a click can, down to reading a pump curve off a datasheet, while you keep every decision.

See Firefinch FHC in full 64-bit Windows 10 or 11 · Works offline · Metric and imperial

How we check

Every number has a paper trail.

Fire and building services calculations protect lives, so you should not have to take ours on trust. Our engine is held to these checks, and so is every program built on it.

Checked against independent software

We check our solver against EPANET 2.2, the US EPA's open hydraulic solver, on a set of reference networks, and compare the results on every change.

Verified before every release

The verification suite runs on every proposed change and again on the release build. A change that moves a verified number cannot be released unless the record is deliberately changed and reviewed.

Stamped on every report

Every report records the calculation program, the exact engine version and a fingerprint of its inputs.

No result without proof

When the engine cannot establish a number, it stops and says why. It never prints a best guess.

Every quantity carries its unit

The engine solves in SI, with units checked wherever values enter it. Conversion for display happens once, on screen and in the report.

Methods shipped with the program

A calculations reference ships with each program. It documents the methods, formulas and constants the engine uses, and the assumptions the reviewing engineer should confirm.

Our software does

Calculates every value and shows the method behind it
Checks each result against the limits you entered
Proposes, and changes nothing until you accept
Records the program, engine version and inputs behind every report

The reviewing engineer decides

Which code and edition apply to the project
The design values and the limits to check against
Whether to accept what the software proposes
Whether the design is right, and signs it off

Design criteria wizard · In development

Design criteria with a paper trail.

The wizard walks the code's own decision tree with you, one question at a time. Every value it derives carries the table or clause it came from, so the criteria can be checked line by line.

Follows the code. Occupancy, system, ceiling and sprinkler, in the code's order. Each answer chooses the next branch, and the criteria build up as you go.
Checked against print. Every table the wizard reads is checked against the printed code, cell by cell, before it ships.
NFPA 13 (2025) first. We are working towards formal support for NFPA 13 (2025). The rest of Firefinch FHC is code-agnostic: enter design values and limits from any code and it checks against them.
Online, or inside Firefinch FHC. With a Firefinch FHC licence, use it online and take the criteria to Firefinch FHC or any other hydraulics program. Inside Firefinch FHC you can also override a value and make the criteria a zone's design basis.
Yours to confirm. Derived criteria are a starting point. The reviewing engineer confirms them before they are relied on.

DESIGN CRITERIA NFPA 13 (2025)

Path

Occupancy: Ordinary Hazard (Group 1); Sec 4.3.3.1
System: Wet pipe
Alarms: Electrically supervised, monitored at a constantly attended location

Criteria

Density: 6.1 mm/min (0.15 gpm/ft²); Table 19.2.3.1.1
Design area: 140 m² (1500 ft²); Table 19.2.3.1.1
Hose allowance: 950 L/min (250 gpm); Table 19.2.3.1.2
Duration: 60 min, as the alarms are monitored; Sec 19.2.3.1.3

Fig. 1 One path through the wizard: the answers on the left, each derived value with the table or clause it came from. The shorter 60 min duration holds only because the alarms are monitored; without that, the code's duration is 90 min (Table 19.2.3.1.2). Illustrative record; the figures are the code's.

Gooey Goat

Engineered to flow.

Gooey Goat is an MEP software company in Centurion, South Africa. We start with life-safety hydraulics, and we hold our work to the standard we expect of yours: show the method, prove the number, keep the record.

Write to us about Firefinch FHC, licences for your office, or what you would like us to build next.

Email us Firefinch FHC

info@gooeygoat.com