76004Technical Specifications - Plumbing CORRECTED.docx

LOVE

Technical Specifications

Technical Specification

Plumbing

Contents

1. Part 1 - General Provisions12. Part 2 - Products33. Part 3 - Identification and Approval of Materials64. Part 4 - Substitution and Testing of Materials65.Part 5 - Soil, Waste, Drainage and Vent Pipes76.Part 6 - Water Distribution System97. Part 7 - Excavation, Pipe Laying and Backfilling98.Part 8 - Miscellaneous109.Part 9 - Site Plumbing Utilities1110.Part 10 - Test and Disinfection1311.Part 11 - Cleaning1612.Part 12 - Painting and Protection1613.Part 13 - Color Code for Exposed Pipes1614.Part 14 - Warranty and " As Built" Plans1715.Part 15 - Responsibility17

Technical Specifications

Page 2 of 4ELECTRICAL-GENERAL PROVISION

SECTION 15400Plumbing Specification

PART 1 GENERAL PROVISION

1.01SUMMARY

A.The General Conditions apply to all work under this section of the Specifications.

1.02SCOPE OF WORK

A.Unless otherwise specified, the CONTRACTOR shall furnish all materials, tools, equipment, apparatus, appliances, accessories, transportation, labor and supervision required for the complete installation and testing of the Plumbing Systems ready for use in accordance with the best practice of the Plumbing Trade as listed herein but not limited to the following:

1.The CONTRACTOR is required to refer to all architectural, structural, mechanical, fire protection and electrical plans and investigate all possible interference and conditions affecting his work.

2.All work shall comply with the pertinent provision of the Plumbing Code of the concerned city, the Code of Sanitation of the Phil., and/or National Plumbing Code of the Philippines.

3.Tapping from an existing main pipe of the building distribution system.

4.Water supply and distribution system for the building, including supply and installation of water tank and pumps piping.

5.All building sanitary drains waste and venting systems including floor drains, & AC drains.

6.Sewage collection and disposal system such as tapping to the existing sewage manhole /sewer line.

7.Building storm drainage system including deck roof drains, canopy drains, and plant boxes drains.

8. Building storm drains and collection system including peripheral collector line into storm manhole or sump pits and up to existing storm drains.

9.Testing for leakage of all water supply and distribution system, drains, waste, sewer and venting system plus pressure testing and disinfection of the water supply and distribution system.

10.Test run of transfer, booster & sump pumps and other equipment under Plumbing Works.

11.Securing of all permits and licenses as required to include water connection.

12.Excavation and backfilling in connection with the work shall be included.

13.Preparation and submittal of two (2) sets of as built plans.

14.Furnish of written one (1) year warranty on the plumbing system.

1.03NOTES ON DRAWINGS:

A.The Drawings show the general arrangement of all pipings. However, where local and/or actual conditions at the jobsite necessitate a deviation or re-arrangement, the Contractor shall prepare and submit the new arrangement for the Architect's or Engineer approval.

B.Small scale Drawings do not possibly indicate all offsets, fittings and other parts of the system required. The Contractor shall arrange such work accordingly, furnishing such fittings, traps valve and accessories as may be required to meet such conditions.

1.04 APPLICABLE SPECIFICATION CODES, ORDINANCES, PERMITS &FEES

A.The work covered in this contract is to be installed according to the specs. Codes, ordinances and requirements of the followings:

1.National Plumbing Code 2.The Code on Sanitation of the Philippines3.National Pollution Control Commission4.Ordinances of concerned city or municipality

B.All construction permits and fees required for the work shall be obtained by and at the expense of the contractor. The contractor shall furnish the Owner final certificates of inspection after the completion of the work.

1.05WORKMANSHIP & COORDINATION WITH TRADES:

A.All work shall be performed in first class and neat workmanship by persons skilled in their trades and such persons and their work shall be satisfactory to the Engineer.

B. The CONTRACTOR is required to refer to the General Conditions and to all architectural, structural, electrical, mechanical and fire protection plans and specifications and shall investigate all possible interference and conditions affecting his work.

PART 2 - PRODUCTS

2.01GENERAL

A.Except as specified, the CONTRACTOR shall submit for the Engineer's approval, four (4) copies of a complete list of manufacturer's names of all equipment and materials he proposes to use, within thirty (30) days after award of contract.

B.The CONTRACTOR shall assume the cost of and the entire responsibility for any change in the work as shown on contract drawings which may be occasioned by approval of materials other than those specified.

2.02PIPES AND FITTINGS SCHEDULE:

A Cold Water Lines - shall be Polypropylene Random Pipe, PPR Pipe PN 16.

BSewer line - shall be Polyvinyl Chloride (PVC) pipe, series 1000 II high Impact.

CVent Pipe - shall be polyvinyl chloride (PVC) pipe, series 600.

D.Downspouts - shall be polyvinyl chloride (PVC) pipe, series 1000 II.

E.Storm Drainage Lines - shall be polyvinyl chloride (PVC) pipe, series 1000 II or reinforced concrete pipe (RCP).

2.03VALVES

A.Gate Valve - 50mm & larger, shall be rising stem iron body with bronze trim, flanged connection, min., of 150 psig working pressure. 50mm & smaller, shall be non-rising stem, all bronze, female threaded, min. of 150 psig working pressure.

B.Check Valve - 50mm &larger shall be iron body with bronze trim, flanged connection, min. of 150 psig working pressure. 50mm & smaller same except female threaded connection.

C.Float Valve - shall be the float & lower type globe valve, single seated-tight closing, bronze or iron material, flanged connection, with float.

2.04OTHER MATERIALS

A.Drains

1.Roor/Deck Drain/Parapet Drain as per approved material.

2.Scupper Drain (Tank Drain) as per approved material.

3.Floor Drain for Toilets (For Second Floor & Up) as per approved material

4.Floor Drain for Toilets (For Ground Floor only) as per approved material.

5.Canopy Drain-as per approved material.

6.Area Drain Grating Cover as per approved material.

B.Hose Bibbs - 20mm standard hose connection, male tape-red threads, polished chromium plated.

C.Outdoor Pipe Lines and Appurtenances:

1.Concrete Drain Pipes (CDP) / Reinforced Concrete Drain Pipes (RCDP) - as per Manufacturers Standards.

2.Thrust Blocks - 140 kg/sq. c.m. reinforced concrete.

3.Area-Drain-Catch Basin - 140 kg/sq., reinforced concrete.

4.Drainage Junction Boxes - 140 kg/sq. c.m. reinforced concrete with pre-cast reinforced concrete cover.

5.Cistern - 210 kg/sq. c.m. reinforced concrete

2.05JOINTING

A.Flanged Joint Gasket as per approved material

B.Screwed Joints - U.S. Federal Specifications GG-P-251.

C.PVC Pipes and Fittings - PVC cement or as per the Manufacturers recommendations.

D.Cast Iron Soil Pipes (B&S) - Oakum and lead (99% purity).

E.Dissimilar Pipes - Adaptor fittings shall be used.

F.Concrete Drain Pipe - Cement mortar.

Page 5 of 17PLUMBING SPECIFICATIONS

PART 3IDENTIFICATION & APPROVAL OF MATERIALS

A.Each length of pipe, fittings, traps, fixtures, and device used in the Plumbing system shall have cast, stamped or marked on it, the manufacturer's trade mark or name, the weight, type and classes of product when so required by the Standard.

B.Within thirty (30) days after award of the contract, the CONTRACTOR shall submit for the Architect's approval, the names of suppliers and materials proposed including trade names and/or samples of the materials if deemed necessary.

PART 4SUBSTITUTIONS& TESTING OF MATERIALS:

A.Materials intended to be substituted for those originally specified shall be accepted only after a formal request for substitution, accompanied by:

1.Reason for substitutions;

2.Certificate of test indicating quality, compared to those originally specified.

3.Cost comparisons with material originally specified. Requests shall be submitted to the Architect for evaluation at least 15 working days before installation of subject materials is due.

B.Cost of testing of materials, whether on originally specified items or on substitutions, shall be to the account of the CONTRACTOR.

C.Results of tests shall be submitted to the Architect for evaluation at least 15 days before the material is due for installation on the job.

PART 5SOIL, WASTE, DRAIN AND VENT PIPES:

5.01GENERAL

A. Underground soil and waste pipes and fittings shall be Polyvinyl Chloride (PVC). Soil & waste pipes above ground shall be Polyvinyl chloride (PVC) Vent pipes shall be polyvinyl chloride (PVC) pipe. Fittings for pipings above ground shall be drainage pattern. Fitting on all dry vents shall be polyvinyl chloride (PVC) pipe. All stacks shall be PVC pipes

B.All soil and drainage pipes shall be pitched 6mm per 300mm but in no case flatter than 3mm per 300mm.

5.02SUPPORTS

A.Horizontal lines shall be supported by well secured length heavy duty strap hangers or floor chairs as required. Vertical lines shall be secured strongly by hooks to the building frame and suitable bracket or chairs shall be provided at the floors from which they start.

B.Soil pipes in trenches under the ground shall be laid true to line and grade on a stable and suitably prepared foundation, each section of the pipe being properly bedded.

C. In soft ground liable to settlement, a gravel base 300mm deep and twice the width of the pipe shall be rolled or tamped. Backfilling shall be carefully placed and tamped for the purpose, in such a manner that the pipe lines or connections are not disturbed.

5.03TRAPS

A.Every plumbing fixtures shall be separately trapped by a vented water sealed trap as close to the fixture outlets as the conditions allow, but in no case at a distance greater than 600mm. In case of the upper or the only fixture on a soil pipe extended full size through the roof, a vent shall not be required when said fixture has its center stack. Traps shall be of the same diameter as the waste pipes from the fixtures which they shall serve, all traps shall have a water seal of at least 32 millimeters with a brass thumbscrew cleanout at the bottom of the seal.

5.04VENT

A.Vent shall be taken from the crown of the fixtures, except for water closet traps, in which case, the branch line shall be vented below the trap and above all small waste inlets, so connected as to prevent obstructions. Each vent pipe shall be run separately above the fixtures into the adjacent soil pipes, a distance not more than 1.50 meters. If more than this distance, the vent shall run independently through the roof.

B.A vent line shall be wherever practicable, direct extension of a soil or waste line.

C.Main vent riser at 4.5 meters long or more shall be connected at the foot with the main water or soil pipes below the lowest vent outlet with a forty five degrees (45) connection.

D. All vertical soil or vent pipes shall be carried up at least 600mm above the roof of the building and the open side ends are to be entirely and securely covered with ga.16 mesh copper cloth.

E.Vent pipes in roof spaces shall be run as close as possible to the under side of roof with horizontal piping pitched down to stacks without forming traps. Where an end or circuit vent pipe from fixtures it shall be connected into the main vent or vent stack.

5.05ROUGHING-IN

A.Roughing-in for pipes and fixtures shall be carried along with the building construction. Correctly locate openings of proper sizes where required in the walls and floors for the passage of pipes. All items to be embedded in concrete shall be thoroughly cleaned and free from all rust, scale and paint.

5.06FITTINGS

A.All changes in pipe sizes on soil, waste and drain lines shall be made with reducing fittings or reducers. All changes in direction shall be made by the appropriate use of forty five degree (45) wyes, or long sweep bends, except that sanitary tees may be used on vertical stacks. Short quarter bends or elbows may be used in soil and waste lines where the change in direction is from the horizontal to the vertical and on the discharge from the water closet.

5.07JOINTS AND CONNECTIONS

A.All joints shall be air and water tight. For joining pipes, the followings shall be used.

1.Cast iron soil and waste pipes, bell and spigot joints caulking with oakum or jute and soft pig lead.

2.Galvanized wrought iron or steel pipe, screwed or threaded joints, use sealant.

3.Lead to cast iron pipe: brass ferrule wiped on lead side and caulked into cast iron bell.

4.Concrete pipes: bell and spigot or tongue and grooved.

5.Polyvinyl chloride (PVC) pipes, socket, type with PVC cement.

PART 6WATER DISTRIBUTION SYSTEMS:

6.01INSTALLATION

A. The pipings shall be extended to all fixtures, outlets and equipment from the gate valves installed in the branch near the riser.

B.Unions shall be provided where required for disconnection.

C.All pipes shall be cut accurately to measurements and shall be worked into place without springing or facing. Care shall be taken so as not to weaken the structural portions of the building.

D.All service pipes valves and fittings shall be kept at sufficient distance from work to permit finished covering not less than 15mm from such work or from finished covering on the different service.E.Changes in pipes shall be made with reducing fittings.

F.Accessible Contraction - Expansion joints shall be made where necessary. Horizontal runs of pipe over 15m in length shall be anchored to wall or the supporting structure about midway on the run to force expansion and contraction equally towards the ends.

PART 7EXCAVATION, PIPE LAYING AND BACKFILLING

7.01TRENCHES

A.Trenches for all underground pipe lines shall be excavated to the required depths and grades. Bell holes shall be provided so that pipe will rest on well-tamped solid ground for its entire length. Where rock is encountered, excavation shall extend to a depth 150mm below the pipe bottom and fill with other approved filling materials.

7.02CONCRETE PROTECTION

All pipes except concrete pipes and cast iron pipes that will run underground shall be protected with Class B concrete casing, a minimum of 100mm around the pipe perimeter and 250mm below the finish grade.

7.03MATERIALS

A.Materials for backfill shall be free of debris or big rocks. Backfill shall be placed in horizontal layers, properly moistened and compacted to an optimum density that will prevent excessive settlement and shrinkage.

PART 8MISCELLANEOUS:

8.01CLEANOUTS

A. Cleanout shall be of the same size as the pipe, the location of which is extended to an easily accessible place.

8.02TRAPS

A.Every plumbing fixtures or equipment requiring connection to the drainage system shall be equipped with a trap.

B. Each trap shall be placed as near as possible to the fixture. No fixture shall be double-trapped.

8.03VALVES AND HOSE BIBS

A.Valves shall be provided on all water supplies to fixture as specified.

B.Hose bibbs shall be made of brass with 15mm male inlet threads hexagon shoulders and 20mm connections.

8.04HANGERS AND SUPPORTS

A.Horizontal runs of pipe shall be hung with adjustable wrought iron or malleable iron pipe hangers spaced not over 3m apart, except hub and spigot soil pipes which shall have hangers spaced not over 1.52m apart and located near the hub.

B.Hangers shall have short turnbuckles or other approved means of adjustment.

C.Inserts shall be of cast steel and shall be of type to receive a machine bolt or nut after installation.

D.Vertical runs of pipe shall be supported by wrought iron clamps, or collars spaced not more than 9m apart.

E.Water and Vent Pipe - 65mm and larger; band type 6.4mm x 25mm flat mild steel or black iron with 15mm round rod with plates and nuts; 50mm and smaller split ring type with 10mm iron rods with inserts plates; toggle bolts, clamps or expansion shield.

8.05PIPE SLEEVES

A.Pipe sleeves shall be installed and properly secured in place at all points where pipes pass through masonry or concrete.

B.Pipe sleeves shall be of sufficient diameter to provide approximately 6.4 mm clearance around the pipe or insulation.

C. Pipe sleeves in walls and partitions shall be of cast iron, wrought iron or steel pipe. Pipe sleeves in concrete beams or concrete slabs shall be wrought iron or steel pipe.

D.Where pipes pass through waterproofing membrane, the sleeves shall be provided with an integral flange or clamping device to which a flashing shield can be soldered.

E.The space between the pipes and sleeves shall be made water tight by inserting a packed oakum gasket and filling the remaining space with poured lead caulking thoroughly.

PART 9 SITE PLUMBING UTILITIES:

10.01GENERAL

A.The entire site plumbing utilities system shall be laid out and installed consistent throughout with the given slope in the plans. Pipe joints and connections to area drains, catch basin, and junction boxes shall possess such leak-proof and see page-proof integrity achieve with the works called for under this particular section of the Specifications.

B.Junction boxes for storm & sanitary (sewer) drainage lines outside the building shall be cast-in place reinforced concrete sections and pre-cast concrete cover.

C.Trench excavation and backfilling shall be as specified in excavation, trenching and backfilling for utility system.

D.Concrete Drainage Pipe:

1.Materials, Pipe shall be reinforced concrete pipe (300 mm dia& larger) and non-reinforced concrete pipe 250 mm dia& smaller conforming to ASTM C14- 75.

2. Installation:

a.Bedding surfaces shall be provided a firm foundation, carefully shaped true to line and grade.

b.Concrete pipe shall be laid carefully with hubs upgrade and ends fully and closely joints. Joints shall be cement mortar. Cement mortar shall consist of one part Portland cement and 1 part clean sharp sand with only enough water for workability. A gasket placed around the pipe.

The gasket shall be in one (1) piece of suitable diameter (not less than 19mm and shall be lapped at the top. The gasket shall be saturated. With that cement before being placed and rammed. The joint shall be completely filled with cement mortar and rammed thoroughly with a wooden caulking tool. The joint shall then be overfilled and finished to smooth level outside.

10.02EXCAVATION FOR STORM AND SANITARY (SEWER) DRAINAGE SYSTEM

A.General: The contractor shall do all excavation of whatever substances encountered below depth shown on drawings. Excavated materials not required for fill or backfill shall be removed from site as directed by the Engineer and disposed of by the Contractor. Excavation for accessories to have 300mm minimum and 600mm maximum clearance in all side. Excavation shall not be carried below the required depth. Excess excavation below required level shall be backfilled at the Contractor's expense with earth, sand, gravel, or concrete, as directed by Engineer, and thoroughly tamped. Unstable soil shall be removed and replaced with gravel or crushed stone, which shall be thoroughly tamped.

The Engineer shall determine the depth of removal of unstable soil. Ground adjacent to all excavation shall be granted to prevent water running. The Contractor shall removed by pumping or other means approved by the Engineer any water accumulated in excavation and keep trench unwatered until the bedding is complete.

B.Trench excavation: Banks of trenches shall be vertical. Soft materials shall be reported to the Engineer. In rock, excavation shall be carried 200mm below bottom of pipe. Loose earth or gravel shall be used for backfill, and tamped thoroughly and rounded to receive pipe as above.

C.Rock Excavation: Rock excavation shall include removal of boulders larger than m 3 in volume and ledge rock concrete or masonry structures that required drilling/melting.

D.Bracing and Shoring: The Contractor shall do all bracing sheathing and shoring necessary to perform and protect all excavation as indicated on the plans. as required for safety, as directed by the Architect, or to conform to governing laws.

10.03TESTING

Test: Test for workmanship on utility lines shall be conducted in accordance with the applicable utility specification before backfilling.

10.04BACKFILLING

A.Backfilling: After pipes have been tested and approved, backfilling shall be done with approved materials free from large rocks or stones.

1.Trench backfill materials shall be placed evenly and carefully around pipe in 150mm maximum layers. Each layer shall be thoroughly and carefully rammed until 300mm of cover exists over pipe. The remainder of backfill material shall be placed, moistened and compacted. Water setting will not be permitted in clay soils. It may be required at the option of the Engineer in sandy soils.

2.Trench under areas to be paved. Materials shall be placed in 200mm maximum layers after filling 300mm above pipe as previously described. Each layer shall be thoroughly and carefully rammed until 300mm of cover exists over pipe. The remainder of backfill material shall be placed, moistened and compacted. Water settling will not be permitted in clay soils. It may be required at the option of the Engineer in sandy soils.

3.Structures: All forms, trash, and debris shall be removed and cleared away. Approved backfill material may be from excavation or borrow. It shall be free from rock, lumber or debris. Backfill material shall be placed symmetrically on all side in 200mm maximum layers. Each layer shall be moistened and compacted with mechanical or hand tampers. In area to paved, shall be compacted to density equal to that of adjacent materials so that pavement can be placed immediately.

B.Maintenance. The CONTRACTOR shall refill for settlement all backfilled areas.

C.Clean-up. The CONTRACTOR shall clean up and disposed of all excess materials, trash, wood forms and other debris.

PART 10 TESTS AND DISINFECTION:

11.01 DRAINAGE SYSTEM TEST

A.The entire drainage and venting system shall have all necessary openings plugged to permit the entire system to be filled with water to the level of the highest stack vent/or vent stack above the roof.

B. The system shall hold this water for a full thirty (30) minutes during which time there shall be no drop more than 100mm.

C.Each section of pipeline shall be slowly filled with water and the specified test pressure, measured at the point of lowest elevation shall be applied by the means satisfactory to the Architect. During the filling of the pipe and before applying the test pressure, all air shall be expelled from the pipe line. To accomplish this taps shall be made, if necessary, at point of highest elevation, and after completion of the test the taps shall be tightly plugged unless otherwise specified. During the test all exposed pipes, fittings, valves joints and couplings will be carefully examined. If found to have cracked or defective, they shall be removed and replaced by the contractor with sound materials at his own expense. The test shall be repeated until satisfactory results have been obtained.

11.02 PRESSURE TESTS FOR WATER LINES:

A.After the pipe have been installed, the joints completed and with joints exposed for examination, all newly installed pipe or any valve section therefore, shall be subjected to hydrostatic pressure 1 the designed working pressure of the system or as specified by the Architect.

B.The duration of each pressure test shall be at least 10 minutes unless otherwise specified by the Architect.

C.Each section of pipe line shall be slowly filled water and the specified test pressure, measured at the point of lowest elevation shall be applied by means of a pump connected to the pipe in a manner satisfactory to the Architect. During the filling of the pipe in and before applying the test pressure, all air shall be expelled from the pipe line. To accomplish this taps shall be made, if necessary, at point of highest elevation, and after completion of the test the taps shall be tightly plugged unless otherwise specified.

During the test all exposed pipes, fittings, valves joints and couplings will be carefully examined. If found to be cracked or defective, they shall be removed and replaced by the Contractor with sound materials at his own expense. The test shall be repeated until satisfactory results has been obtained.

11.03 LEAKAGE TEST FOR WATER LINES

A.Leakage test shall be conducted after satisfactory completion of the pressure and shall consist of an examination of all exposed joints for leakage as well as on overall leakage test completed pipelines.

B.The pressure to be maintained during the test shall be the design working pressure of the system.

C. Leakage test shall be made only after a minimum of 24 hours after the pipe to be tested have been filled with water.

D.The duration of each leakage test shall be two hours unless otherwise specified by the Architect.

E.Each section to the pipeline shall be slowly filled with water at specified pressure, measured at the points of lowest elevation shall be applied by means of a positive displacement type pump and reservoir connected to the Pipeline.

F.Before starting the leakage test, all air shall be expelled from the pipe. All expose pipes, fittings, valves and joints shall be examined for leakage during the test.

G.Allowable leakage rate per 100 joints per inch of Pipe Diameter at Pressure.

--------------------------------------------------------------- PRESSURE LEAKAGE RATE--------------------------------------------------------------- PSI KG/CM LITERS/HR. LITERS/HR.--------------------------------------------------------------- 50 3.5 1.45 2.90 75 5.3 1.75 3.50 100 7.0 2.05 4.10 125 8.8 2.30 4.60 150 10.5 2.50 5.00 200 14.0 2.90 5.80

H.No structures shall be closed until all joints have been inspected for leaks.

11.04DEFECTIVE WORK:

A.If the inspection or test shown any defect, such defective work or material shall be replaced and the test shall be repeated until satisfactory to the Architect.

B.All repairs to piping shall be made with new materials at the expense of the contractor.

C.No caulking of screwed joints of holes will be accepted.

11.05DISINFECTION OF WATER DISTRIBUTION SYSTEM AND WATER TANKS (as per AWWA C 601)

A. The entire water system shall be thoroughly flushed and disinfected with chlorine before it is placed on operation. Water tanks shall be washed and swabbed.

B.Chlorination materials shall be liquid chlorine of hypoclorite as specified and shall be introduced into the water lines in manner approved by the Engineer.

C.Tanks shall be thoroughly cleaned of all debris dirt or dust before swabbing.

D.The chlorine dosage shall be such as to provide not less than fifty parts per million (50ppm) of available chlorine.

E.Following a contact period of not less than sixteen (16) hours, the heavily chlorinated water shall be flushed from the system with clean water until the residual chlorine content is not greater than two tenth (0.20 ppm). All valves in water lines being sterilized shall be opened and closed several times during the 16 hours chlorinating period.

PART 11 CLEANING

A.All exposed metal surfaces shall be free of grease, dirt or other foreign materials.

B.Chrome or nickel plated piping, fittings and trimmings shall be polished upon completion.

C.All plumbing fixtures shall be properly protected from used and damage during the construction stage. The fixture shall be cleaned to the satisfaction of the Architect upon completion and prior to acceptance of work.

D.All equipment. Pipes, valves and fittings shall be cleaned of grease and sludge which may have accumulated. Any clogging, discoloration or damage to other parts of the building due to the system shall be repaired by the Contractor.

PART 12PAINTING AND PROTECTION:

A.All exterior of pipings to be installed in or through concrete floors and underground shall be given one coat of acid resisting paint having a bituminous base.

B.Pipe hanger supports and all of the iron work in concealed spaces shall be painted with one coat of asphalt.

C.Expose galvanized iron pipe and fittings that are 1 mil asphalt coated shall be given two coats of shellac prior to application of two coats or oil paint as directed by the Architect or his authorized representative.

PART 13 COLOR CODE FOR EXPOSED PIPES

A.All exposed pipings shall be adequately and durably identified by distinctive colored paints as follows:

ITEMCOLOR CODE

cold water pipebluehot water pipeblue w/red band @ 1.0m O.C.storm water pipealuminumsewage pipeblackvent pipegreen waste pipegray

PART 14 WARRANTY & "AS-BUILT" PLANS:

A.All works, equipment and fixture shall be guaranteed by the CONTRACTOR for satisfactory service for a minimum period of one (1) year.

B.The CONTRACTOR shall submit to the Owner in reproducible form plus three (3) sets of white prints, the complete plans of the entire system as actually built. The cost of those shall be borne by the contractor. Submittals of "AS-BUILT" Plans shall be conditions to final payment.

PART 15 RESPONSIBILITY

A.The general CONTRACTOR shall be responsible for the coordination among the different trades on the job in order to finish the work in the least possible time, in strict accordance with the Plans and Specification.

1.Throughout the construction period open ends of all installed pipe lines shall be kept closed by temporary plugs.

2.Drainage lines shall not be used to conduct dirty construction wash water especially those with cement mixes to avoid possible clogging.

3.A temporary fire protection system shall be provided by the contractor during the construction operations. This is in addition to temporary fire extinguisher required.

4.A temporary potable water supply shall be made available to construction workers at every floor as construction progress.

5.A temporary human extra disposal system shall be provided by the contractor to serve the worker during the construction period.

--------------- END OF SECTION --------------

National Plumbing Code Of The Philippines92 Questions I By C2x_op26

NATIONAL PLUMBING CODE Top of Form

Bottom of FormRemove ExcerptQuestion Excerpt1. Size of water piping shall be based on the total _________

A. water consumption

B. water demand

C. water potability

D. none of the above

2. Water closet bowls for________use shall be elongated bowl types equipped with open-front seats.

A. public

B. private

C. government


3. Wastewater drain for _________cupsink at church altar & baptisteries font outlet shall discharge direct to the ground & not connected to any sanitary or drainage system.

A. holy sink

B. lavatory

C. Baptismal shrine

D. Sacrarium

4. Tunnels shall have: the following except

A. a clear height of 0.6m above the pipe & shall be limited in length to 1/2 the depth of the trench.

B. driven pipes shall have at least one pipe size larger than the pipe to be laid

C. shall be back-filled in thin layers of 0.3m above the top of the pipe with clean earth which shall not contain stones, boulders, cinders or other materials which can damage or break the pipes or cause corrosive action.


5. the minimum cross sectional area at the seat of the control valve or the supply pipe or tubing which feeds the device outlet. If two or more lines supply one outlet, the effective opening shall be the sum of the cross-sectional areas of the individual supply lines or the area or the single outlet, whichever is smaller.

A. effective opening

B. effective depth

C. effective area

D. effective invert

6. Suspended cast iron soil pipe shall be supported at not more than ____m intervals, except that pipe exceeding 1.5m length may be supported at not more than _____m intervals. Supports shall be adequate to maintain alignment & to prevent sagging & shall be placed within 0.45m of the hub or joint.

A. 1.5/ 3

B. 1.5/ 4

C. 3/ 1.5

D. 4/ 1.5

7. No water closet or bidet shall be set closer than ______m from its center to any side of the wall or obstruction or closer than ______m center to center to any similar fixture.

A. .375 / 0.75

B. .375 / 0. 70

C. .40 / 0.70

D. .50 / 0.60

8. Lead Pipe - shall be supported at by____________for entire length with hangers properly spaced.

A. Stiff aluminum or wooden backing

B. stiff metal or wooden backing

C. stiff plastic or metal sheet

9. Fixtures having concealed slip joint connections shall be provided with an access panel or utility at least ______m in its least dimension for inspection & repair.

A. 0.30

B. 0.20

C. 0.10

D. 0.40

10. Excessive water pressure water pressure greater than ____ Kpa

A. 551

B. 552

C. 553

D. 554

11. drains shall have a waterway equivalent area of the tailpiece meaning, the sum of all the areas of the perforation of the strainer is equivalent to the outlet area.

A. Strainers serving bathub

B. Strainers serving shower

C. Strainers serving lavatory


12. Copper Tubing - shall be supported at approximately ________m intervals for piping 38mm diameter & smaller & _______m intervals for piping 51mm & larger in dia.

A. 1.8/ 3.0

B. 1.9/ 3.5

C. 1.5 / 2.5


13. Continuous waste fixture tailpiece connections were exposed or accessible may be of seamless drawn brass not less than Ga. 20 B&S or ______mm thk.

A. 0.90

B. 0.80

C. 0.70

D. 0.60

14. All porcelain enamel surfaces on plumbing fixtures shall be __________

A. mold resistant

B. acid resistant

C. corrosion resistant


15. All pipe determinations shall be based on eighty percent (___) the reduced pressure.

A. 70%

B. 60%

C. 80%

D. 90%

16. ______________ must be supported at least every other joint except that when the developed length between supports exceeds 1.2m, they shall be provided at each joint.

A. Couplings and compression joints

B. Hubless or compression gasket joints

C. Caps and plugs


17. ____________ - shall be supported by stiff metal or wood backing with hangers in its entire length for small-size tubings up to 38mm diameter & without backings but with spaced metal hangers at approved spacing for larger-size tubings.

A. steel tube

B. plastic tube

C. aluminum tube

D. concrete tube

18. ________ m max

A. 61

B. 62

C. 63

D. 64

19.

A. WASTE TANK

B. SEPTIC TANK

C. SEWAGE DISPOSAL SYSTEM

D. NONE OF THE ABOVE

20.

A. 20mm/m or 2%

B. 30mm/m or 3%

C. 40mm/m or 4 %

D. 10mm/m or 1 %

21.

A. 22 degrees bend

B. 45 degrees bend

C. 60 degrees bend or other approved fittings of longer sweeps

D. 30 degress bend

22.

A. NAMPAP

B. DILG

C. DPWH

D. DENR

23.

A. AIR SEPARATION

B. AIR BREAK

C. AIR DEVISOR


24.

A. BRANCH INTERVAL

B. INTERVAL

C. BRANCH

D. LENGTH

25.

A. 1,2

B. 1,1

C. 2,1

D. 2,3

26.

A. 45 wye branches

B. combination wye & 1/8 bend branches

C. 30 wye bend

D. or other approved fittings of longer sweeps.

27.

A. 45 wye branches

B. combination wye & 1/8 bend branches

C. or other approved fittings of longer sweeps.

D. 30 wye bend

28.

A. INTRAMUROS

B. BARASOAIN

C. BATAAN

D. CEBU

29.

A. 45 wye branches

B. or other approved fittings of longer sweeps.

C. 60 degree branches or offsets (only for pipes installed in true vertical position

D. 45 degree branches

30.

A. Double hub fitting for leak-caulked joint in vertical position

B. Single or double tee branch

C. Single or double tapped tee branch

D. Side inlet quarter bend, Running thread, band or saddle

E. all of the above

31.

A. single hub sanitary tapped tee

B. double hub sanitary tapped tee

C. triple hub sanitary tapped tee


32.

A. plumbing unit

B. plumbing fixtures

C. plumbing system

D. plumbing minimum

33.

A. GI soil pipe

B. cast iron soil pipe

C. PVC soil Pipe


34.

A. SINK

B. LAVATORY

C. BASIN


35.

A. VENTILATING SYSTEM

B. WATER-SEALED TRAP

C. SOIL PIPES

D. WASTE PIPES

36.

A. 100 mm

B. 102 mm

C. 101 mm

D. 104 mm

37. Water pipes & fittings with a lead content that exceed ____shall be prohibited & shall not be used in potable piping systems.

A. 8%

B. 9%

C. 10%

D. 11%

38. Water Closet & Urinal Tanks shall be equipped with a listed ________ & shall be installed with the critical level at least 25mm above the full opening of the overflow pipe.

A. corporation cock

B. gatevalve

C. ballcock


39. THE TOTAL NUMBERS OF SET OF SANITARY/ PLUMBING PLANS REQUIRED BY THE BUILDING OFFICIAL WHEN APPLYING FOR PERMIT

A. 4

B. 5

C. 3

D. 6

40. THE SANITARY AND PLUMBING PERMIT WILL BE REVOKE IF THE PROJECT HAS BEEN ABANDONED OR SUSPENDED FOR HOW MANY DAYS

A. 120

B. 60

C. 30

D. 100

41. The quantity of water required to be supplied to every plumbing fixture shall be represented by ____________

A. Fixture Units FU

B. Fixture drain FD

C. Fixture Trap FT


42. The minimum airgap forEffective openingsnot greater than 25mm in diameter. affected by walls

A. 2 times diameter of effective opening

B. 4 times diameter of effective opening

C. 5 times diameter of effective opening

D. 3 times diameter of effective opening

43. The minimum airgap forEffective openings

A. 3 times diameter of effective opening

B. 2 times diameter of effective opening

C. 4 times diameter of effective opening

D. 5 times diameter of effective opening

44. THE MINIMUM HEIGHT REQUIRED FROM THE FINISH GRADE LINE THE SIAMESE INLET CONNECTION OF A STANDPIPE

A. 2.0 M

B. 1.2 M

C. 1.5 M

D. 2.5 M

45. The minimum air gap forOver rim bath fillers & other fixtures witheffective openingsnot greater than 25mm in diameter. affected by walls

A. 76mm

B. 77mm

C. 78mm

D. 79mm

46. The minimum air gap forOver rim bath fillers & other fixtures with effective openings not greater than 25mm in diameter. not affected by walls

A. 54mm

B. 53mm

C. 52mm

D. 51mm

47. The minimum air gap forLavatories & other fixtures witheffective openingsnot greater than 13mm in diameter if not affected by wall

A. 25

B. 24

C. 23

D. 22

48. The minimum air gap forLavatories & other fixtures with effective openings not greater than 13mm in diameter if affected by walls

A. 36mm

B. 37mm

C. 38mm

D. 39mm

49. The minimum air gap for Sinks, laundry trays, goosenecks bath faucets & other fixtures with effective openings not greater than 19mm in diameter. if not affected by wall

A. 40mm

B. 39mm

C. 38mm

D. 37mm

50. The minimum air gap for Sinks, laundry trays, goosenecks bath faucets & other fixtures witheffective openingsnot greater than 19mm in diameter. if affected by wall

A. 56mm

B. 57mm

C. 58mm

D. 59mm

51. THE EXPIRATION OF THE PERMIT FOR SANITARY / PLUMBING WILL BE EXPIRED AFTER HOW MANY YEARS FROM THE DATE OF ISSUANCE

A. 2

B. 1

C. 1.5

D. 3

52. THE DRAWINGS, SPECIFICATION, CALCULATIONS AND ETC FOR PLUMBING / SANITARY PERMIT WILL BE SIGNED BY Aa Registered & Licensed

A. DRAINAGE ENGINEER

B. MASTER PLUMBER

C. SANITARY ENGINEER

D. ARCHITECT

53. Restaurant kitchen & other special-use sink may be made of approved-typed sheet steel not less than Ga.16 U.S. B&S or 1.6mm thk.

A. bonderized & galvanized

B. aluminum

C. steel


54. No urinal shall be set closer than _________m center to center

A. 0.70

B. 0.60

C. 0.50

D. 0.65

55. No building sewer or other drainage pipings or part thereof, constructed of materials other than that approved for use under or within the building, shall be installed under or within _____ m of any building or structure, nor less than 0.3m below the finish ground surface

A. 0.60

B. 0.40

C. 0.30

D. 0.20

56. No

A. 21

B. 20

C. 25

D. 19

57. Inadequate water pressure water pressure less than _____ Kpa

A. 103

B. 104

C. 105

D. 106

58. In Screwed Pipe - IPS shall be supported at approximately _______m intervals for piping 19mm diameter & smaller & _______m intervals for piping 25mm & larger in diameter.

A. 3.5 / 3.0

B. 3.0 / 3.5

C. 3.6/ 3.0

D. 3.0 / 3.6

59. In Ground - piping buried on the ground shall be laid on the ______ for its entire length, except where concrete cradle support is provided which is adequate & approved by the Administrative Authority.

A. firm bed

B. strata

C. compacted earth


60. ForEXCRETA DRAINAGE SYSTEMNo Vitrified Clay Pipes or Fittings for building drain or sewer shall be used above ground or whenever piping is pressurized by a pump or ejector. They shall be kept ______m below finish ground level.

A. 0,30

B. 0.40

C. 0.50

D. 0.60

61. ForEXCRETA DRAINAGE SYSTEMNo Galvanized Wrought Iron or Galvanized Steel Pipe shall be used underground & shall be kept at least _____mm above ground.

A. 155

B. 152

C. 153

D. 154

62. For vertical piping, Screwed Pipe - Iron Pipe Size (IPS) shall be supported at not less than every other storey

A. drift

B. height

C. level

D. dimension

63. For vertical piping, _________ - shall be supported at each storey or at a maximum intervals of 3m o.c.

A. lead tubing

B. copper tubing

C. steel tubing

D. g.i. tubing

64. For vertical piping, cast iron pipes- Bell & Spigot & Hubless pipe shall be supported at_____ or closer.

A. every 2 storey

B. every storey

C. every 3 storey

D. every 4 storey

65. FOR THE SET OF SANITARY/ PLUMBING PLANS REQUIRED BY THE BUILDING OFFICIAL WHEN APPLYING FOR PERMIT HOW MANY SET OF DRAWINGS WILL BE RETURNED ON THE APPLICANT

A. 1

B. 2

C. 3

D. 4

66. FOR THE SET OF SANITARY/ PLUMBING PLANS REQUIRED BY THE BUILDING OFFICIAL WHEN APPLYING FOR PERMIT HOW MANY SET OF DRAWINGS WILL BE PROVIDED FOR THE ADMINISTRATIVE AUTHORITY

A. 1

B. 4

C. 3

D. 2

67. FOR THE SET OF SANITARY/ PLUMBING PLANS REQUIRED BY THE BUILDING OFFICIAL WHEN APPLYING FOR PERMIT HOW MANY SET OF DRAWINGS WILL BE KEPT IN THE JOB SITE

A. 2

B. 3

C. 1

D. 4

68. Fixture unit Lawn Sprinklers (standard type, each head)

A. 1

B. 2

C. 1.5

D. 2.0

69. Fixture unit Water Closet (economical flush) private use

A. 5

B. 4

C. 3

D. 2.5

E. 2

70. Fixture unit ofUrinal (stall & wall)

A. 5

B. 4

C. 3

D. 2

71. Fixture unit ofUrinal (pedestal or similar type)

A. 10

B. 15

C. 12

D. 9

72. Fixture unit ofUrinal (flush tank)

A. 2

B. 3

C. 4

D. 5

73. Fixture unit of Water Closet (flush tank & flushometer-tank),Hose Bibb or Sill Cock (standard type) private use

A. 2

B. 3

C. 4

D. 5

74. Fixture unit of Water Closet (flush tank & flushometer-tank),

A. 5

B. 4

C. 3

D. 2

75. Fixture unit of Water Closet (economical flush) public use

A. 5

B. 4

C. 3

D. 2

76. Fixture unit of Mobile Home (each)-temporary facilities

A. 5

B. 6

C. 7

D. 8

77. Fixture unit of Bidet, Bathtub(With or Without Shower Over),Laundry Tub or Clothes Washer (each pair of faucets), Shower (each head), Sink or Dishwasher private use

A. 2

B. 3

C. 4

D. 5

78. Fixture unit of bidet, Bathtub(With or Without Shower Over),Laundry Tub or Clothes Washer (each pair of faucets), Shower (each head), Sink or Dishwasher public use

A. 2

B. 3

C. 4

D. 5

79. Fixture unit Bar Sink, Drinking Fountain, Lavatory private use

A. 1

B. 2

C. 1.5

D. 2.5

80. Ficture unit Bar Sink, Drinking Fountain, Lavatory public use

A. 1

B. 2

C. 1.5

D. 2.5

81. EXCRETA DRAINAGE SYSTEM whatpiping installations shall be used in high rise buildings

A. ABS Acrylonitrile-Butadiene-Styrene

B. PVC (POLYVINYL CHLORIDE)

C. Vitrified clay pipe

D. a,b

E. b,c

82. Consists of two independently acting internally or externally loaded check valves, four properly located test cocks with connectors & two isolation gate valves.

A. ATMOSPHERIC VACUUM BREAKER (AVB

B. DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY (DC)

C. PRESSURE VACUUM BREAKER BACFLOW PREVENTION ASSEMBLY (PVB)


83. Consists of two independently acting internally loaded check valves, a differential pressure relief valve, four properly located test cocks & two isolation gate valves.

A. PRESSURE VACUUM BREAKER BACFLOW PREVENTION ASSEMBLY (PVB)

B. REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTION ASSEMBLY (RP)

C. ATMOSPHERIC VACUUM BREAKER (AVB

D. DOUBLE CHECK VALVE BACKFLOW PREVENTION ASSEMBLY (DC)

84. Consists of a loaded air inlet valve, an internally loaded check valve, two properly located test cocks & two isolation gate valves.





85. Consist of a body, a checking member & an atmospheric opening.





86. All pipings passing under or through walls shall be protected from breakage with embedded ________________.

A. concrete pipe metal sleeves

B. pvc pipe sleeves

C. metal pipe sleeves


87. All pipes passing through or under cinders or other corrosive materials shall be protected from external corrosion by encasing same with _______ or in any other approved manner.

A. metal sheath

B. polybuthane sheath

C. polyethylene sheath

D. plastic sheath

88. _____________ - shall be supported at every 1m interval.

A. plastic pipe

B. pvc pipe

C. steel pipe

D. lead pipe

89. in vertical piping ___________shall be supported at intervals not exceeding 1.20m at centers with a rigid vertical back-up

A. PVC pipe

B. Lead Pipe

C. Steel Pipe

D. G.I pipe

90. No Drainage or __________ shall be drilled & tapped for making connections thereto

A. vent piping

B. drainage piping

C. none of the above

D. supply piping

91. which is not properly lighted & ventilated.

A. CATCH BASIN

B. LAVATORY

C. BIBB

D. WATER CLOSET

92. If it is impracticable to obtain such slope due to the following conditions except,

A. Excessive depth of the proposed drainage line

B. Structural and/or geological features of the terrain

C. Existing adverse in arrangements of building structure

D. Reasonable change because of existing weather

Page 28 of 17 PLUMBING SPECIFICATIONS

76004Technical Specifications - Plumbing CORRECTED.docx

Documents

Transcript of 76004Technical Specifications - Plumbing CORRECTED.docx