Plumbing 3D IPC Code Learning vs IQ Test

See how plumbing works. Learn the code. Practice solving problems. Plumbing3D brings residential and commercial building systems, illustrated code lessons and engineering experiments together in one visual learning app. Built for iPhone and iPad, it helps students, apprentices, tradespeople, inspectors and engineers connect the parts of a plumbing system to the principles behind them. EXPLORE CONNECTED SYSTEMS IN 3D Explore a two-story home or commercial building. Inspect fixtures, valves, water heaters, pumps, supply piping, drainage and vents. Trace matching system connections in a color-coordinated schematic. Use search, close-up navigation, floor isolation, section cuts, wall transparency and roof controls to investigate the model. OPERATE FIXTURES AND VALVES Open fixtures, close branch valves and adjust supply pressure in the Connected Flow Lab. Follow affected supply and drainage paths and compare illustrative flow and residual-pressure readings. LEARN THROUGH TROUBLESHOOTING Work through five guided investigations: observe the symptom, choose measurements, diagnose the cause, select a repair and verify the result. Review case evidence, before-and-after measurements, coaching hints and an investigation log. Explore ten fault experiments with animated diagrams, sliders and repair switches. PRACTICE INSTALLATION INSPECTIONS Investigate five installation defects in close-up 3D views. Identify the finding, learn the corrective action and compare the repaired condition. Browse additional illustrated violation references. MAKE CODE REQUIREMENTS VISUAL Explore six lessons covering drainage slope, trap seals, trap-to-vent distance, backflow protection, fixture flow pressure and cleanout access. Adjust installation conditions, inspect defects and compare bounded IPC/UPC examples. Each lesson identifies its study basis and publisher references. Save your edition, jurisdiction and amendment notes in Code Settings. EXPERIMENT IN THE ENGINEERING WORKSPACE Start with home, upper-floor or commercial teaching examples. Adjust flow, inside diameter, length, elevation, pressure and material. Watch a live pressure budget, predict outcomes and compare a saved baseline. Explore drain grade, pump duty and hot-water recirculation with visual diagrams and worked calculations. Save named studies and export calculation steps to PDF. BUILD AND REVIEW YOUR KNOWLEDGE Follow beginner, apprentice, inspector or engineering learning paths. Take randomized practice quizzes or a timed 40-question practice exam. Review missed topics, practice glossary flashcards and follow a 13-stop 3D tour. Bookmarks, notes, learning milestones and quiz history are saved on your device. STUDY TECHNICAL ILLUSTRATIONS Browse plumbing and mechanical illustrations, including 33 figures from the Mechanical Engineering Visual Handbook. Open a full-screen slideshow, swipe between figures, pinch to zoom and read the accompanying explanations. Educational models and calculations use stated assumptions. Numeric code exercises identify their verified example editions; selecting another edition does not convert every calculation or reference. Local amendments and manufacturer requirements require separate checking. This app does not provide permit approval, a validated engineering solver or an official certification examination. IPC, UPC and other referenced standards belong to their respective publishers; the app is not affiliated with or endorsed by those organizations.

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.