Materials, and Installation
Standards 2026 Exam Questions
and Answers | 100% Solved
What must plumbing preserve? - 🧠 ANSWER ✔✔The strength of structural
members and prevent damage to walls and surfaces.
Must fixtures discharging liquid waste be connected to the sanitary
drainage system? - 🧠 ANSWER ✔✔Yes.
, Do bathtubs and showers always discharge into the sanitation system? - 🧠
ANSWER ✔✔No, exceptions exist for approved recycled water systems.
Must clothes washers discharge into the sanitary drainage system? - 🧠
ANSWER ✔✔Yes, unless approved recycled water is used.
Must plumbing fixtures be connected to the water supply system? - 🧠
ANSWER ✔✔Yes, either directly or indirectly.
How are pipe, tube, and fitting sizes expressed? - 🧠 ANSWER ✔✔In
nominal/standard sizes, not actual dimensions.
Can plumbing systems be located in elevator equipment rooms? - 🧠
ANSWER ✔✔No, it is prohibited.
Are floor drains at the base of an elevator shaft permitted? - 🧠 ANSWER
✔✔Yes, but only if indirectly connected.
When code conflicts with manufacturer instructions, which prevails? - 🧠
ANSWER ✔✔The code always prevails.
Can detrimental materials be deposited into the sewer? - 🧠 ANSWER
✔✔No, it is prohibited.