Trade Exam · Module 4
Accessibility and Specialty Systems
Accessible toilets 17-19 inches high, lavatories need 27 inches clearance with insulated pipes, showers slope 1/4 inch per foot with grab bars at 33-36 inches. Know medical gas basics and radiant heating.
Key Takeaways
Why This Matters on the Exam
Accessibility codes are everywhere now. California Title 24 and ADA-based codes mandate accessible fixture installation in public and multi-family buildings. You're installing for people with disabilities, elderly folks, folks with mobility challenges. Get it wrong, and you fail the inspection and cost the customer money. Get it right, and you've done something that matters. The exam tests accessibility standards and specialty systems because modern plumbing covers more than just residential homes.
What You Must Know
Accessible fixtures have specific heights, clearances, and grab bar locations. Pipes under accessible fixtures need protection from burn injury and contact. Medical gas systems use dedicated stainless steel tubing and color-coded connections (not standard plumbing materials). Radiant heating systems use PEX with hot water at 100–120°F instead of traditional boilers. Greywater, rainwater, and chilled water systems require separate piping and isolation from potable water. Know these distinctions—they're on the exam.
Keep reading — unlock the full lesson
You’re reading a free preview. Get the complete lesson plus everything you need to pass the California C-36 exam:
- All 63 in-depth lessons
- 1,200+ practice questions
- AI tutor (100 messages included)
- 18+ hours of audio lessons
- Full-length practice exams
- Pass guarantee
More lessons in Finish Plumbing Installations
- 1Fixture Installation
- 2Water Heaters
- 3Backflow Prevention
- 4Traps and Interceptors
- 5Accessibility and Specialty SystemsYou are here
- 6