Traps hold a water seal that blocks toxic gases from escaping into rooms.
Always ensure you are using the 1999 Revised Edition for the most up-to-date regulations.
Installers can visually cross-reference their rough-in work with code-compliant illustrations.
The Revised National Plumbing Code of 1999, derived from RA 1378, serves as the regulatory standard for plumbing design and installation in the Philippines. "Illustrated" versions typically offer visual diagrams and interpretations to aid in licensure exam preparation, covering requirements for pipe sizing, venting, and material quality. For more information on the official plumbing regulations and licensure, visit Professional Regulation Commission . Republic Act No. 1378 - Jur.ph national plumbing code of the philippines illustrated pdf
The official Revised National Plumbing Code of the Philippines is a technical text document (approximately 225 pages) that includes definitions, principles, and requirements through written text and tables. While some digitized versions of this code may contain diagrams or figures, the code itself is not officially published as an "illustrated code."
The you are currently troubleshooting (e.g., sizing vent stacks, calculating storm drainage, grease trap design)
Designing systems to utilize minimum water quantities for flushing. Traps hold a water seal that blocks toxic
| Principle Number | Short Title | Core Concept | | :--- | :--- | :--- | | | Pure Water Supply | Every building must have a supply of pure and wholesome water, protected from contamination or unsafe sources. | | 2 | Adequate Flow & Pressure | Plumbing fixtures must be supplied with enough water at adequate pressure to function correctly and quietly. | | 3 | Water Efficiency | Plumbing systems must be designed to use the minimum quantity of water necessary for proper performance. | | 4 | Explosion Prevention | Water heating devices must be designed to prevent dangers from explosion due to overheating. | | 5 | Mandatory Sewer Connection | Buildings with plumbing fixtures that have access to a public sewer must connect their system to it. | | 6 | Minimum Sanitary Facilities | Each family dwelling must have at least one water closet, one kitchen sink, a lavatory, and a bathtub or shower. | | 7 | Fixture Material & Ventilation | Fixtures must be made of smooth, non-absorbent material and be located in ventilated enclosures. | | 8 | Maintainable Drainage | The drainage system must be designed with adequate cleanouts to prevent and clear clogs and fouling. | | 9 | Approved Materials | All piping must be made of durable, NAMPAP-approved materials and installed by Registered Master Plumbers. | | 10 | Water-Sealed Traps | Every fixture connected to the drainage system must have a water-sealed trap to prevent sewer gases from entering the building. | | 11 | Adequate Ventilation (Air Circulation) | The drainage system must provide adequate air circulation to prevent the siphonage or forcing of trap seals. | | 12 | Vent Terminals to Outside Air | Vent pipes must extend to the outer air and be installed to prevent clogging and the return of foul air. | | 13 | System Testing | Plumbing systems must be tested to effectively disclose all leaks and defects in workmanship. | | 14 | Prohibited Substances | No substance that can clog, destroy, or explosively react within pipes is allowed to enter the drainage system. | | 15 | Backflow Protection | Proper protection must be provided to prevent the contamination of potable water and food by the backflow of sewage. | | 16 | Water Closet Location | No water closet can be located in a room or compartment that is not properly lighted and ventilated. | | 17 | On-Site Sewage Disposal (Septic Tanks) | If no public sewer is available, suitable on-site disposal like a septic tank must be used. | | 18 | Prevention of Sewage Overflow | Provisions must be made to prevent sewage backflow from overflowing inside the building. | | 19 | Maintenance by Registered Master Plumbers | Plumbing systems must be maintained by Registered Master Plumbers. | | 20 | Proper Fixture Spacing | All plumbing fixtures must be installed with proper spacing to be accessible for their intended use. | | 21 | Preserving Structural Integrity | Plumbing installation must consider the preservation of structural member strength and prevent damage to walls. | | 22 | Sewage Treatment | Sewage or industrial waste that may be deleterious to the public sewer system must be treated before discharge. |
The backbone of the code consists of 22 basic principles. These are fundamental rules that must be honored regardless of the building's size. They cover mandatory requirements such as: Providing pure, wholesome water to every occupied building.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. The Revised National Plumbing Code of 1999, derived
The code establishes strict administrative rules for any plumbing project:
The code is built on 22 basic principles. These are the philosophical foundations of Philippine plumbing, dictating that all premises intended for human habitation must have a supply of pure, wholesome water, and that plumbing fixtures must be designed to prevent backflow and contamination. 2. Drainage Systems (DWV)
Plumbing board exams and building permit applications require precise isometric plumbing diagrams. Illustrated guides show exactly how to translate 2D schematics into 3D space.