Plumbing 3D IPC Code Learning vs IQ Test

Plumbing3D is a complete plumbing education app for students, apprentices, journeymen, inspectors, and engineers. Explore fully detailed 3D building models, tap any component for instant code-referenced information, and sharpen your skills through nine interactive learning modules. TWO 3D BUILDING MODELS Navigate a residential house or a 2-story commercial building in full 3D — switch anytime. Tap any pipe, valve, fixture, or component for its name, function, material spec, and IPC/UPC code section, from the water meter through supply risers, DWV stack, storm drainage, fire suppression, and water treatment. Toggle wall transparency, hide the roof, animate flow, explode the view by system, or overlay pipe-size labels. SEARCH ANYTHING Instantly search every component, glossary term, and quiz question from one place. LEARNING HUB — 9 MODULES Plumbing Quiz: Test your knowledge of code requirements, pipe sizing, and fixture unit calculations. Best score tracked. Certification Exam Mode: Timed 40-question mock exam, 70% pass threshold, countdown clock, and a missed-questions breakdown by system. Glossary: 60+ searchable terms (DWV, PRV, AAV, WSFU, DFU, backflow) with plain-English definitions and citations. Code Reference: An offline, searchable companion organizing every component's code citation and function by system. Guided Tour: A narrated walkthrough of water flow from city main to building sewer, with code references at every stage. Fault Simulator: Activate 10 real-world failures — water hammer, siphoned trap, cross-connection, sewage backup, and more — with live status gauges and an interactive response checklist. Hydraulic Calculator: Seven calculators for water demand, WSFU/DFU sizing, pipe sizing, pressure loss, recirculation, drainage load, and pump sizing — plus a project mode that saves named calculations and exports a PDF. Code Violations: 9 documented inspector findings with severity, code section, and remediation — key prep for inspections and licensing. Diagram Gallery: 45+ technical diagrams — P-trap assembly, DWV and riser diagrams, chiller schematics, mechanical closet cutaways, MEP sections, inspection checklists, and more. Pinch to zoom or view full screen. YOUR OWN NOTES Attach notes to any component — a personal study log or jobsite reference, saved automatically. BUILT FOR IPAD AND MAC Full Split View and Slide Over support on iPad, and Mac Catalyst support on Mac. WHO THIS APP IS FOR Plumbing apprentices preparing for journeyman exams Journeymen and master plumbers refreshing code knowledge Building inspectors reviewing IPC and UPC requirements Mechanical and plumbing engineers Architecture and construction management students Contractors preparing for permit submissions Standards and organizations referenced — including IPC, UPC, ASHRAE, ASME, NFPA, ASSE, ASTM, AMCA, and ASCE — are the property of their respective organizations and used solely for educational purposes. This app is not affiliated with, endorsed by, or sponsored by any of them. Code references and values are for general education only and may not reflect the current adopted edition in your jurisdiction. Always consult the applicable adopted code, a licensed engineer, and your local AHJ before making design, installation, or compliance decisions.

IQ Test measures your reasoning across seven areas used by standard mixed IQ batteries: matrices and number grids, logic and letter sequences, spatial reasoning, numerical reasoning, classification, analogies, and verbal reasoning. Every sitting draws a fresh test from a bank of 424 questions in 19 different formats, so no two runs are the same. Figure questions give six answers to choose from, as progressive-matrices tests do, and the bank includes paper folding, balance scales and logic puzzles. Questions ramp from easy to genuinely hard, and the hardest ones stack several rules at once, the way real progressive-matrices tests do. Take the full 42-question test in 35 minutes, or a quick 21-question version. Everything is drawn right on your device, so the whole test works offline. SCORING THAT RESPECTS DIFFICULTY Your score is estimated with a 1-parameter logistic (Rasch) model, the same family of item-response model used by real tests. Each question sits at one of five difficulty levels, and because ability is measured against those levels rather than as a raw percentage, different random tests give comparable scores. NINETEEN QUESTION FORMATS - Figure matrices: 3x3 grids built from several parts, with rules for shape, size, shading, number and position stacked across the rows, and six answers to choose from - Number grids - Figure series and letter series - Spatial rotation of mirror-image figures, and paper folding - Number series across many rule families, shown with enough terms to pin the rule down - Balance scales: work out what weighs the same - Numerical word problems: rate, ratio, age, clock and work - Classification: figural and numerical odd-one-out - Analogies: figural, numerical and verbal - Verbal reasoning: ordering, syllogisms, if-then logic, codes and arrangements WHAT'S INSIDE - 424 unique reasoning questions across 7 categories - A different test every time: fresh, balanced, difficulty-ramped draw each run - Five difficulty tiers, from single-rule warm-ups to multi-rule matrices - Full test (42 questions, 35 minutes) and quick test (21 questions, 15 minutes) - Timer, progress bar, one question per screen, swipe or tap to move - Estimated IQ score with percentile on a normal distribution - Category breakdown across all seven reasoning types - Share your score as an image - Free: every question, your IQ, your percentile and the breakdown across all seven areas - No ads, ever - Optional one-time purchase: the full report, with every answer worked out - Fully offline. No accounts, no tracking. FREE, AND WHAT IS NOT The test is free and stays free: all 424 questions, the full 42-question sitting and the quick 21, your IQ, your percentile and the breakdown across all seven areas. There are no ads and no subscription. The full report is a one-time purchase, unlocked once and yours for every test you take afterwards. It adds every answer worked out with the rule written in plain English, your score with its 95% confidence interval, a sub-score for each of the seven areas with the range it actually pins down, your history on one chart, and a certificate. ON A WIDER SCREEN On an iPad, or an iPhone turned sideways, the test opens as two pages: the question on one, the answers on the other, the way the paper booklets it imitates are laid out. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://legal.unreel.ae/privacy/iqtest.html IQ Test is designed for entertainment and self-practice. Every question is original, written for this app in the style of established reasoning formats. Scores are estimates based on your answers and item difficulty, and are not a clinically administered IQ assessment.