National Plumbing Code 1 PDF

HISTORY OF PLUMBING CODE 17th Century - Walled City of Intramuros Model Community - Illustrados recognized Plumbers Governor General Harrison proper disposal of waste 1902 Plumbing code was duly recognize - John F. Hass 1st Master Plumber 1935 NAMPA...

HISTORY OF PLUMBING CODE 17th Century - Walled City of Intramuros Model Community - Illustrados recognized Plumbers Governor General Harrison proper disposal of waste 1902 Plumbing code was duly recognize - John F. Hass 1st Master Plumber 1935 NAMPAP was formed National Master Plumber association of the Philippines - City Ordinance 2411 Plumbing code for city of Manila June 18,1955 - RA 1378 Plumbing Law of the Philippines signed by Pres. Ramon Magsaysay January 28,1959 - approved by Malacanang NAWASA National Waterworks and Sewarage Authority - Asbestos Cement pipe 1st approved Plumbing Materials 22 BASIC PRINCIPLES 1. CLEAN WATER: All premises intended for human habitation, occupancy, or use shall be provided with a supply of pure and wholesome water supplies not subject to hazards of backflow or back-siphonage. 2. VOLUME AND PRESSURE: Plumbing fixtures, devices, and appurtenances shall be supplied with water in sufficient volume and at pressure adequate to enable them to function satisfactorily and without undue noise under all normal conditions. 3. EFFICIENCY: Plumbing shall be designed and adjusted to use the minimum quantity of water consistent with proper performance and cleaning. 4. EXPLOSION: Devices for heating and storing water shall be so designed and installed as to prevent dangers from explosion through overheating. 5. SEWER: Every building having plumbing fixtures installed and intended for human habitation, occupancy, or use on premises abutting on a street, alley, or easement where there is a public sewer shall be connected to the sewer system. 6. PLUMBING UNIT: Each family dwelling unit on premises abutting on a sewer or with a private sewage-disposal system shall have at least one water closet and one kitchen-type sink. Further, a lavatory and bathtub or shower shall be installed to meet the basic requirements of sanitation and personal hygiene. 7. VENTILATION: Plumbing fixtures shall be made of smooth, non-absorbent material, free from concealed fouling surfaces, and shall be located in ventilated enclosures. 8. CLEANOUTS: The drainage system shall be designed, constructed, and maintained to safeguard against fouling, deposit of solids, clogging, and with adequate cleanouts so arranged that the pipes may be readily cleaned. 9. NAMPAP: All pipings of plumbing systems shall be of durable NAMPAP (National Master Plumbers Association of the Philippines) APPROVED materials, free from defective workmanship, designed, and constructed by Registered Master Plumbers to ensure satisfactory service. 10. TRAP: Each fixture directly connected to the drainage system shall be equipped with a water-sealed trap. 11. AIR CIRCULATION: The drainage piping system shall be designed to provide adequate circulation of air free from siphonage, aspiration, or forcing of trap seals under ordinary use. 12. VENT TERMINALS: Vent terminals shall extend to the outer air and be installed to preempt clogging and the return of foul air to the building. 13. TEST: Plumbing systems shall be subjected to such tests to effectively disclose all leaks and defects in the workmanship. 14. SEWAGE HARM: No substance which will clog the pipes, produce explosive mixtures, destroy the pipes or their joints, or interfere unduly with the sewage-disposal process shall be allowed to enter the building drainage system. 15. CONTAMINATION: Proper protection shall be provided to prevent contamination of food, water, sterile goods, and similar materials by backflow of sewage. When necessary, the fixture, device, or appliance shall be connected indirectly with the building drainage system. 16. WC LIGHT: No water closet shall be located in a room or compartment which is not properly lighted and ventilated. 17. SEPTIC TANK: If water closets or other plumbing fixtures are installed in buildings where there is no sewer within a reasonable distance, suitable provision shall be made for disposing of the building sewage by some accepted method of sewage treatment and disposal, such as a septic tank. 18. SEWAGE BACKFLOW: Where a plumbing drainage system may be subject to backflow of sewage, suitable provision shall be made to prevent its overflow in the building. 19. RMP: Plumbing systems shall be maintained in serviceable condition by Registered Master Plumbers. 20. ACCESSIBLE: All plumbing fixtures shall be installed properly spaced to be accessible for their intended use. 21. STRUCTURAL STABILITY: Plumbing shall be installed by Registered Master Plumbers with due regard to the preservation of the strength of structural members and the prevention of damage to walls and other surfaces through fixture usage. 22. SEWAGE TREATMENT: Sewage or other waste from a plumbing system which may be deleterious to surface or subsurface waters shall not be discharged into the ground or into any waterway unless first rendered innocuous through subjection to some acceptable form of treatment.