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Method Statement for Plumbing Piping Works Rev.01

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SUNRISE CITY - PLOT V PROJECT METHOD STATEMENT for Plumbing and Drainage Piping Installation Works Rev. 01 Prepared by:
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Page 1: Method Statement for Plumbing Piping Works Rev.01

SUNRISE CITY - PLOT V PROJECT

METHOD STATEMENT

for

Plumbing and Drainage Piping Installation

Works

Rev. 01

Prepared by:

Gilbert A. NeptunoSenior Site ManagerThang Long Fire Co.

Page 2: Method Statement for Plumbing Piping Works Rev.01

THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

TABLE OF CONTENTS page no.

1.0.Purpose......................................................................................................................3

2.0.Definitions ................................................................................................................3

2.1 Party..................................................................................................................3

2.2 Scope of Works ................................................................................................3

3.0 Specific Standards ...................................................................................................3

3.1 References & Standards..................................................................................3

4.0 Materials ..................................................................................................................4

5.0 Material Handling, Storage and Delivery .............................................................6

6.0 Preparation Works ..................................................................................................7

7.0 Work Flow Chart ....................................................................................................8

8.0 Construction Method..............................................................................................9

9.0 Quality Control......................................................................................................40

9.1 Preparation Works.........................................................................................40

9.2 Installation......................................................................................................42

9.3 Inspection........................................................................................................42

9.4 Handover After Installation..........................................................................42

9.5 Lists of Testing & Commissioning Tasks.....................................................42

10.0 Safety Plan............................................................................................................44

11.0 Appendix...............................................................................................................45

Page 2 of 46

Page 3: Method Statement for Plumbing Piping Works Rev.01

THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

1.0 Purpose

The objective is to describe the installation of Plumbing & Drainage System associated with installation of internal pipes to ensure compliance with contract requirements, approved shop drawing, combine and coordinated all services and structural penetration shop drawings, material, specification and quality control.

2.0 Definitions

This Method Statement describes the work execution on the installation of pipes for plumbing system and piping works.

2.1 Party

All M & E works (Plumbing & Drainage System) for Basement 01 & 02, Master Ground Floor, Podium and V2 & V3 Tower will be carried out by Thang Long Fire Co. Ltd.

2.2 Scope of Works

This procedure establishes the instructions for the preparation and control of Inspection and Test Plan (ITP) for field construction activities and notification to Owner’s project management for their selected inspection point in a timely manner. The method statement is applied to the installation of water supply pipe and sanitation equipment for Sunrise City Project – Plot V.

3.0 Specific Standards

3.1 References and Standard

Materials Standard

uPVC pipe for Soil, Waste, Vent and Drain System

SS 213 & SS 272

PPR pipe for Cold and Hot Water Pipe System DIN 8077/8078

Cast Iron Pipe for Soil, Waste & Drain at Basement high level and transfer floor

ASTM A74

4.0 Materials

4.1 uPVC Pipes –De NhatThese uPVC pipes and HDPE pipes has registered and tested product quality at Directorate for Standards and Quality Assurance and Testing center 3 on use purpose : Pipe for Industries

Pipes for Water SupplyPipe for Water DrainagePipe for Electrical Conduit

Page 3 of 46

Page 4: Method Statement for Plumbing Piping Works Rev.01

THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

In addition, all materials have been tested and delivered with good quality and assurance of “Top Quality in the Market” policy.The first uPVC and HDPE pipes systems could have good performance in the field of application as:

Drinking water, industrial process water, domestic / industrial waste water treatment, drain water / waste water discharge, well drilling, agriculture irrigation, aquaculture, electrical and telecom.

The first uPVC & HDPE pipes are manufactured in compliance:+uPVC pipe: ASTM 2241, TCVN 6151, ISO 2531, AS 1477, CNS 1299, SS

213 equivalent to BS 3505, ISO 4422, BS4514, BS 5255, AS 1415.+HDPE pipe

The uPVC and HDPE pipes system have been widely known by professional and proven for their characteristics:

a. Light weight, easy in handling and save operating costs.b. Smooth surface and greater hydraulic capacity.c. Strong mechanical strength, good resistance to impact and pressure.d. Corrosion resistance from electrolyte erosion, bacterial attack and chemical

erosion.e. Non-toxic, no influence on water quality.f. Good insulation and fire retardation. Provide excellent protection for electrical

wiring system.g. Simple and readily joined, easy installation work.h. Small friction factor.

4.2 PPR Pipes – Aquatherm

Aquatherm is a pipe system with many applications due to its special characteristics and versatility.

Potable water pipe networks: for cold and hot water installations for residential buildings, hospitals, hotels, office and school buildings etc. house connections, boiler connections, water distribution, riser and water point connection.

Heating pipes for residential houses: heat generator connections, heating manifolds, risers, high rise, manifold connections and radiator connections.

This pipe system is applied in all fields of new installation, repair and renovation.

According to DIN 1988 T2 all installation parts coming directly in contact with potable water are commodity goods according to the Law of Food and Commodity Goods.

All piping system and fittings system have UV stabilizer to bridge transport and installation times. Maximum storage time in the open air is 6 months.

Page 4 of 46

Page 5: Method Statement for Plumbing Piping Works Rev.01

THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

For the application in open air Aquatherm offers composite pipes with UV-protective layer made from polyethylene, which excludes damages caused by sunlight.

The sound insulation qualities of the PPR Pipe system, related to water flow and hydraulic shock within a building, provide a sound proofing effect on noise transmission.

Therefore the sound transmission is much lower compared to metallic pipes.

This pipe system complies with the requirements of the fire classification B2 DIN 4102 (normal inflammable). Compared to natural products like wood, cork or wool. Aquatherm don’t produce any gas toxicity. To avoid fire and smoke transmission aquatherm advises the use of fire retardant seals and the fire resistance period is the minimum period in minutes.

PP-R pipe is connected with the welding method used in welding and electricity to heat with. This material is applicable to both cold & hot water supply piping, fitting for down feed line and distribution line system.

Machinery and Tools

4.3 Machinery and tools for construction

4.3.1 Power drill4.3.2 Hand hacksaw4.3.3 Square end sawing vice4.3.4 Sizing tool4.3.5 Reamer & sand paper4.3.6 Screw gauge4.3.7 Drill Press Machine4.3.8 Fire Extinguisher4.3.9 Hand tools4.3.10 Scaffolds4.3.11 Clean rug and cloth4.3.12 Vinyl Sheet4.3.13 Vinyl Tape4.3.14 Brush (Enamel and Wire)

4.4 Machinery and tools for testing

4.4.1 Portable Motorized Test Pump4.4.2 Manual Hand Pump4.4.3 Water Pressure Gauges4.4.4 Air Bleeding Valve4.4.5 Test Plugs

Page 5 of 46

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THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

5.0 Materials Handling, Storage and Delivery5.1 PURPOSE

This purpose is to provide instruction for the control and receipt of material, equipment and supplies purchased, furnished or controlled by Thang Long for Sunrise City Plot V Project.

5.2 SCOPE

This procedure is applicable to receiving, handling, storage, maintenance and inspection of items received by Thang Long for the construction of Sunrise City Plot V Project.

5.3 RESPONSIBILITY

a) Thang Long engineer shall be responsible for the implementation of receiving inspection and notifying Owner’s Project Engineer (1 day in advance) of the arrival of material using the material delivery IDP forms for the materials w/c Thang Long purchased in the local market; and for overseas, the arrival of material shall be advised to Client/Project Engineer on the shipment date and ETA in HCM. Thang Long Engineer shall notify the Client/Project Engineer upon arrival in HCM one day in advance for receiving inspection to site. The Client/Project Engineer shall designate the lay down areas for the bulk materials.

b) The Subcontractor shall place items in the storage areas to which they are assigned.

c) The Subcontractor shall record each item on the material stock inventory report and shall be submitted to KEC for monitoring.

5.4 GENERAL

a) Material Control & Receiving shall consist primarily of commercial receipt including count, condition and identification.

b) Receiving shall be performed in conjunction with inspection by KEC Engineer.

c) Receiving inspection shall be performed based on the requirement of the latest approved materials and procurement documents.

5.6 RECEIVING

Receiving inspection shall be performed by the KEC engineer and Client/Project Engineer for material and equipment received

STORAGE

a) Storage Area

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Page 7: Method Statement for Plumbing Piping Works Rev.01

THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

1. Access to storage areas shall be controlled and limited only to authorized personnel.

2. Cleanliness and good housekeeping practices shall be enforced at all times in the storage areas

3. KEC engineer shall perform the periodic inspection for storage area every week.

5.7 MARKING

The subcontractor shall ensure that material delivered to site are neatly arranged, packed and labeled as per item against the packing list or receipt from the manufacturer.

5.8 METHODS

a) All items shall be stored in such a manner as to permit ready access for inspection and maintenance without excessive handling in order to minimize risk or damage.

b) Items stacked for storage shall be arranged so that the racks, cribbing or crates are bearing the full weight without distortion of the item.

6.0 Preparation Works / Procedure

1. For site inspection, Thang Long Engineer shall prepare the Request for Inspection and notify to the Engineer not less than one working day in advance for required hold and witness point.

2. ITP shall be prepared by responsible Thang Long Engineer according to construction detail schedule on the basis of the applicable shop drawings, method statement and/or specification.

3. Thang Long Engineer shall follow up the inspection activities in accordance with the “ITP”.

4. Upon completion of the work operation, the responsible Thang Long Engineer shall review item covered by the applicable ITP to assure that the work has been completed satisfactorily and that the ITP and all supplementary documentation is attached and submitted to the Engineer.

5. Thang Long shall request the Engineer for visual check on site, to witness how the PPR, uPVC and C.I. pipe are cut, heated and cooled, joined together.

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Page 8: Method Statement for Plumbing Piping Works Rev.01

THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

7.0 Work Flow Chart

8.0 Construction Method

8.1 PPR Pipes and Fittings Installation

a) Adhesive Bonding Joint for PPR Pipes and Fittings

1) Cutting of the pipe

- Mark pipe according to the necessary length.

- Cut the pipe following the marking. Cut the pipe at right angles to the pipe axis.

- For bigger pipes use cutting machine as shown below

2) Heating of pipe and fitting

- Push the end of the pipe up to the welding depth into the welding tool.

Page 8 of 46

Approved

Approved

Approved

Approved

Approved

Approved

1. Materials 2. Shop Drawing 3. Method Statement

Materials procurement & delivery to site.

Installation of pipe opening through / onslab & walls

1. Pipe insulation (where applicable) 2. Pipe penetration seals 3. Fire stopping –FS One (Hiltii Brand) 4. Pipe system cleaning & flushing

1. Installation of equipment 2. Final connection to equipment, valves and accessories

1. Hangers / Supports Installation 2. Pipe installation based on approved shop drawings

1. Hydraulic Test – Cold & Hot Water Piping, fittings,etc.

Engineer's/Consultant’s Comments

Rejected

Inspection

Rejected

Inspection

Rejected

Inspection

Rejected

Inspection

Rejected

Inspection

RejectedRejected

2. Water Leak Test– Soil, Waste, Vent & Drainage pipe

Page 9: Method Statement for Plumbing Piping Works Rev.01

THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

- After the stipulated heating times, quickly remove pipe and fitting from the welding tool (See table 1)

- Join them immediately until the marked welding depth is covered by the PP-R bead from the fitting.

- Before starting the fusion, check if the aluminum-PP- composite layer has been completely remove.

- All used devices and tools must have reached the necessary operating temperature of 260 deg. C.

- Suitable measuring instrument have to measure a temperature up to 350 deg C.

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THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

2) Weld in saddles

- Weld in saddles are available for pipe outer diameter of 40, 50, 63, 75, 90, 110, 125, 160, 200 and 250 mm. The maximum sensor well diameter is specified in the following Table. 2

- Weld in saddles are used for:

i. Branch connections in existing installations.

ii. The substitution of a tee. Branch connections in risers.

iii. Sensor wells, etc.

Page 10 of 46

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THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

- Drill through the pipe wall at the intended outlet point by using the drill.

- Insert the heating tool on the concave side of the weld-in saddle tool into the hole drilled in the pipe wall until the tool is completely in contact with the outer wall of the pipe.

- Fusing the weld-in saddle with the pipe the outer surface and the pipe inner wall connection reaches highest stability.

- The welding device/saddle welding tool must have reached the required operating temperature of 260 deg. C

- The Welding surfaces have to be clean and dry.

- Insert the heating tool on the concave side of the weld-in saddle tool into the hole drilled in the pipe wall until the tool is completely in contact with the outer wall of the pipe. Next the weld-in saddle tool is inserted in to the heating sleeve until the saddle surface is up against the convex side of the welding tool. The heating time of the elements is generally 30 sec.

- Insert the weld-in saddle in to the heated drilled hole. Pressed and wait for 15 sec. Wait for 10 mins. to cool before exposed to full loading.

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THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

Page 12 of 46

Page 13: Method Statement for Plumbing Piping Works Rev.01

THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

Page 13 of 46

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THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

3) Butt Welding

Pipes and fittings are fused, as explained below by butt welding (pipe dimension 160, 200, and 250 mm)

- Cut pipe into required length.

- Plastic pipes are aligned and fixed by means of the clamping elements.

- Push the pipes onto the heating place with a defined adjusting pressure.

- When heating time has expired, divide the machine slide, remove heating element quickly and joint the pipes (by putting both parts of the slide together).

- Welded connection can be unclamped and welding process is finished.

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

4) Repair

- Damaged pipes may be repaired by means of fusion.

- In addition to this the offers the possibility of the pipe repair stick.

- The installation: same step for weld-in saddle.

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THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

a) Exposed pipes

PPR – Pipe / uPVCSupport Details and Schedule

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Pipe Hanger shall have neoprene pad.

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THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

b) Concealed PP-R pipes

- Mark location of pipes and outlet on walls according to approved shop drawings.

- After layout has been established, mark the pipe route on the brick wall with two marked lines according to installed pipe size (follow Table 3).

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

Table 3: Wall Opening Size for PPR Pipes

ItemPipe Size(d) mm

Opening(b) mm

Depth(t) mm

SleeveSize

1 20 60 35 DN 40

2 25 60 35 DN 40

3 32 100 45 DN 50

4 40 100 50 DN 65

5 50 150 65 DN 80

6 60 150 80 DN 100

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Note: See shop drawing details for various pipe outlet heights as per san. fixtures supplier recommendation.

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THANH LONG FIRE CO. LTD.

METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

Preparation works

The construction drawings have been approved and allowed work at the Sunrise City.

The PP-R pipes and accessories have been reviewed and authorized for construction at the Sunrise City Project site.

Location, the installation area has been checked and permitted by the responsible authority.

The worker use heat welding machine has been training, inspected and certified for welding pipe PP-R.

Welders will be tested and trained in the site. Welders through the test will be given certificates for welding pipe PP-R at the site.

The necessary tool and equipments for connection, installations have been prepared and checked (pipe cutter, the head, the welding machines, drilling machines, hand tools ...). Appliances this device must be checked and sealed test period 3 months / time).

Sanitary tools for cleaning surface connection such as (wiper, sandpaper ...). When performing on the finishing floor to improve plastic covering and plywood 10mm.

Based on the construction drawings approved mark position installed on a wall, floor or ceiling depending on the position pipe fitting. The positioning device such as ridge, water-level machine, water ruler and angle ruler.

The wall conceal tube must mark the location and request to the responsible authority for inspection before cutting.

Installing the rack position was marked. The racks must be zinc galvanized after processing and testing.

Connecting pipe and piping installations according to drawings.

Inspection works.

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

SUPPORT INSTALLATION (BAR HANGERS, RACK)

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

A kind of bar hanger, rack must have approved, the location, size according to the construction drawings approved specification, the blow bolt must be fitted and drilling accuracy and make sure. The bar hanger, rack distance is not higher more than the distance specified in the drawing specification. The bar hanger, rack must be straight, bolt must be screwed and correct position. Rack should be cut drilling, and improved before being zinc galvanized. The hole shot stopper must be round, deep and clean. When drilling or working on a high level scaffolding must be used.

A) Application of Anchor Bolts and Fixing:1. According to the strength of concrete or solid masonry, diameter of the embedment of anchor bolt and depth embedment, the pull out load will be modified.2. Drill- The holding power of any anchor is directly related to the diameter of the embedment hole. So it’s important to use the right size of embedment hole. Inappropriate size may cause unexpected results. The drill carbide bits must be of the correct diameter for the respective anchor hole diameter. In general, carbide bits conforming to the following will produce acceptable hole diameters.

Metric System: ISO 5468 and DIN 8035

Nominal Dia. Min. Dia. Max. Dia. 6mm 6.12 mm 6.30 mm 8 8.15 8.36 10 10.15 10.36

12 12.18 12.43 14 14.18 14.43 16 16.30 16.61 18 18.30 18.61 20 20.30 20.61 24 24.30 24.61 26 26.30 26.61

3. The general rule of space and edge distance requirement for mechanically expanded anchors as followings:

-Ten (10) anchor diameter between edge.- Two (2) times anchor embedment between spacing.If vibration or impact is applied, spacing should be increased

4. Working loads of anchor boltThe maximum pull out load (slated values) is measured under the condition of the anchor bolt is broken and pulled out from concrete or solid masonry.

B) Threaded Rod

Model Length Screw Thread Spec. Cross-sectional Allowable Load / KN T0063000 300 cm M6 0.190cm2 1.11T0083000 300 cm M8 0.347cm2 2.04T0103000 300 cm M10 0.551cm2 3.24

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

T0123000 300 cm M12 0.802cm2 4.71T0163000 300 cm M16 1.503cm2 8.83T0203000 300 cm M20 2.349cm2 13.8

C) Across Type Pipe Clamp

Model Measurement Outer Dia. Allowable Load Screw Thread W DN / Inch (KN) SpecificationSRP 04 15A ½” 21.7 1.22 M10 25SRP 06 20A 3/4” 27.2 1.22 M10 25SRP 10 25A 1” 34.0 1.22 M10 25SRP 12 32A 1-1/4” 42.7 1.22 M10 25SRP 14 40A 1-½” 48.6 1.22 M10 25SRP 20 50A 2” 60.5 1.22 M10 25SRP 24 65A 2 – ½” 76.3 1.52 M10 25SRP 30 80A 3” 89.1 1.52 M10 25SRP 40 100A 4” 114.3 1.52 M10 25SRP 50 125A 5’ 139.8 2.12 M12 32SRP 60 150A 6” 165.2 2.12 M12 32SRP 80 200A 8” 216.3 2.50 M16 38SRP 100 250A 10” 267.4 3.25 M16 38SRP 19 - 1/4” 19.1 1.22 M10 25SRP 25 - 5/8” 25 1.22 M10 25SRP 42 100A - 110 1.52 M10 25SRP 62 150A - 159 2.12 M12 32

U BOLT

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

Hangers & Supports

Specifications /Standards:

8.2 uPVC Pipes and Fittings Installation Works

a) Cutting of pipe

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

- All cutting must be done in warehouse or in designated areas at each floor. All cutting must not be done at work area.

- Cutting angle must be right angle.

- Inside edges must be reamed smooth by reamer or sand paper.

b) Adhesive Bonding Work (for uPVC Pipe)

Figure 1: Details of Adhesive Bonding Joint

- Ensure pipes are in correct diameter, approval material prior to start works. Plain ends shall be inspected with special attention, as these ends are the most susceptible to damage.

- Pipes shall not be rolled or skidded against other pipe materials. Make sure that the pipes are free from debris and other foreign materials.

- Mark the measured length on the pipe by permanent marker pen. Cut the pipe using a power saw or a PVC cutter. Be sure to cut the pipe squarely.

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Zero point

Marking

PVC Pipe

Stopper

Actual PVC Socket Length

Marking

Fluidity region

Boundary of Joint

Deformations RegionBoundary of Joint

Swell layer by Adhesive (0.1-0.2mm)

PVC PipePVC socket PVC socket

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

- Chamfer the corners and remove all burrs by reamer, file or sand paper, clean away dust, dirt and oils with a clean rug before applying adhesive.

- Before jointing, insert the pipe into the joint socket and confirm that the length from zero point to the end of pipe is 1/3 to 2/3 of actual socket length.

- Attach marking on the pipe surface by permanent marker pen. Marking position shall be actual socket length from the end of pipe.

Instructions on installation of uPVC Pipe with glue paste:

The tube must be checked, as hygiene, dry cleaning connection, if performed on the finishing floor must have plastic cover, plywood to avoid dust. a) Polished top, tube edge, cleaning the surface of contact

between the tube and accessories with sandpaper smooth.

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

b) Marked depth connection, check the length of pipe with pencil, paper tape.

c) Using a palm-tree has quick glue paste on the tube top marked and inside face of accessory.

d) Accelerate quick, strongly linked-tipped to the position marked, straight push, do not rotate.

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

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PLOT V PROJECT

e) Use clout to clean the excess glue on connection

f) After completed installation, the connection must be dry, do not move waiting glue dry for about 1 minute for tube 50mm back, 2 minutes for the larger 50mm tube and 3 minutes from tube to tube 100 - 150 (using tools support to connect pipes from 150 onwards)

c) Pipe installation1) Exposed pipe

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

2) Concealed pipes

Table 3: Wall Opening Size for uPVC Pipes

ItemPipe Size(d) mm

Opening(b) mm

Depth(t) mm

SleeveSize

1 DN32 100 45 DN50

2 DN40 100 50 DN65

3 DN50 150 65 DN80

4 DN80 200 100 DN125

5 DN100 200 120 DN150

Page 29 of 46

Note: See shop drawing details for various pipe outlet heights as per san. fixtures supplier recommendation.

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

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30~20 mm thk

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

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Note: 1. KH to get approval for fire stopping materials prior to installation. 2. Typical installation details for both fire rated and common walls.

3. Testing – General requirements

Notify to the consultants, drawings management and measures to the message tube are trying to monitor the test.

The pipe tested after each phase or part of the pipeline and before the pipeline are be hidden backing up.

Hydrostatic drainage system test for each section by dividing the system horizontally (estimated per 3 floors)

Fitting the test plug on the mounting block top of a pipe tested.Testing is done by filling of clean water into the pipes up to the highest level.

Mark and check the water level after the period stipulated within 24 hours.

Check and record the water level after 24 hours, inform to the consultants, client will check and sign on the inspection report if no detected leakage.

SUPPORT INSTALLATION (BAR HANGERS, RACK)

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30~20 mm thk.

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METHOD STATEMENTfor Plumbing and DrainagePiping Installation Works

SUNRISE CITY

PLOT V PROJECT

A) P-TYPE CLAMP

Model Outer Dia.(mm) Allowable Load(KN) Remarks P004 21.7 mm 1.76

P006 27.2 1.76 P010 34 2.65 P012 42.7 2.65

P014 48.6 2.65 P020 60.5 3.53 P024 76.3 3.53 These series used for P030 89.1 3.53 galvanized pipe. P040 114.3 4.12 P050 139.8 4.12 P060 165.2 4.41 P080 216.3 4.41 P004G 20 1.76 P006G 25 1.76 P010G 32 2.65 P012G 40 2.65 P014G 50 2.65 P020G 63 3.53 These series used for P024G 75 3.53 seamless pipe. P030G 90 3.53 P040G 110 4.12 P005G 125 4.12 P060G 160 4.41 P080G 200 4.41 P004E 19.1 1.76 P061E 25.4 1.76 P010E 31.8 2.65 These series used P012E 38.1 1.76 for fulgurite P014E 50.8 1.76 P020E 63.5 3.53

B) UR-TYPE PIPE CLAMP

Model Measurement Allowable Load / KN M W C DN INCH

UR04 15 ½” 5.4 10 25 38 UR06 20 ¾” 5.4 10 25 38 UR10 25 1” 5.4 10 25 38 UR12 32 1-1/4” 5.4 10 25 38 UR14 40 1-½” 5.4 10 25 38 UR20 50 2” 5.4 10 25 38 UR24 65 2-1/2” 5.4 10 25 38 UR30 80 3” 5.4 10 25 38 UR40 100 4” 5.4 10 25 38

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UR50 125 5” 10 12 32 48 UR60 150 6” 10 12 32 48 UR80 200 8” 10 12 32 48 UR100 250 10” 10 12 50 48 UR120 300 12” 16.1 16 50 75

C) UR Type Pipe Clamp

Model Measurement Outer Dia. A B C D G Allowable Load DN / Inch mm (KN) SR004 15A ½” 21.7 SR006 20A 3/4” 27.2 3/8” 80 20 40 2.6*25 2.40 SR010 25A 1” 34 SR012 32A 1-1/4” 42.7 SR014 40A 1-1/2” 48.6 3/8” 80 20 40 3*25 2.70 SR020 50A 2” 60.5 SR024 65A 2-½” 76.3 3/8” 80 20 40 4*32 4.20 SR030 80A 3” 89.1 SR040 100A 4” 114.3 5.10 SR050 125A 5” 139.8 1/2” 80 20 40 4*38 7.20 SR060 150A 6” 165.2 7.20

8.3 Cast Iron Pipes and Fittings Installation

a) Cutting of Pipe

- All cutting must be done in warehouse or in designated areas of each floor. All cutting must not be done at work area.

- Cutting angle must be right angle.

- Pipe shall be cut by power hacksaw, circular cutting machine with abrasive wheel, hand hacksaw or square end sawing vice only.

- Inside edges shall be reamed smoothen by reamer or sand paper.

b) Coupling Joint

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1) Pipe with pipe

- Push the supplied complete connector on to the pipe end right up to the middle spacing ring of the seal.

- Turn over the open half of the sealing collar.

- Install the next pipe or formed part flush with the spacing ring and fold back the turned over half of the collar.

- Place the clamping sleeve around the collar.

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- Alternatively tighten the two clamping screw uniformly and hard tight. The guiding and threaded plates of the clamp must come together parallel to avoid any deformations.

2) Pipe with fitting

- Push the supplied complete connector on to the pipe end right up to the middle spacing ring of the seal.

- Push the pipe end from the other end into the connector.

-- Firmly tighten the hexagon socket screw with a socket spanner, hard

ratchet or impact screwdriver, if possible to the point where the two clamping jaws come together.

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Hanger & Supports

Specification & Technical Standard:

Part No. Pipe Size Dimensions (mm)

Inches Kgs Lower Steel Rod Hole Size Bolt Size H D

TAG122022 1/2" 3x25 3x25 10 M8x60 70 22

TAG122028 3/4" 3x25 3x25 10 M8x68 76 28

TAG122035 1" 3x25 3x25 10 M8x78 82 35

TAG122040 1-1/4" 3x25 3x25 10 M8x82 92 42

TAG122048 1-1/2" 3x25 3x25 10 M8x88 100 48

TAG122060 2" 3x25 3x25 10 M10x110 117 60

TAG122075 2-1/2" 4x25 4x25 10 M10x125 146 73

TAG122090 3" 4x25 4x25 10 M10X140 155 89

TAG122105 3-1/2" 4x25 4x25 10 M10x155 173 105

TAG122115 4" 6x32 6x32 10 M10X170 198 115

TAG122140 5" 6x32 6x32 12 M12X195 232 140

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TAG122168 6" 6x32 6x32 12 M12x225 266 168

TAG122219 8" 6x40 5x40 12 M12x275 338 219

TAG122273 10" 6x40 6x40 16 M16x360 419 273

TAG122323 12" 9x50 6x50 20 M20x420 490 323

TAG122355 14" 9x50 6x50 20 M20x455 556 355

TAG122406 16" 12x65 6x65 24 M24X510 610 406

TAG122457 18" 12x65 6x65 24 M24x555 675 457

TAG122508 20" 12x75 9x75 30 M24X610 715 508

TAG122610 24" 16x75 9x75 30 M24X710 850 610

TAG122755 30" 19x75 9x75 30 M24x890 995 755

Expansion Bolt and Schedule

Machine Screw Standard Diameter Length

DIN 965 Countersunk (Flat) Head M3 ~ M8 6mm ~ 70mm

DIN 966 Raised Countersunk Head M3 ~ M8 6mm ~ 70mm

DIN 7985 Raised Cheese Head M3 ~ M8 6mm ~ 70mm

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Hexagon Nuts Standard   Diameter  Length

DIN 934 M6 ~ M24 6 or 8

ISO 4032 M6 ~ M24 6 or 8

UNI 5587 M6 ~ M24 6 or 8

AS/NZS 1112 M6 ~ M24 6 or 8 

Grade

ANSI B18.2.2 ¼” ~ 1” 2 or 5

BS 916 ¼” ~ 1” 2 or 5

UNC (Coarse Thread) ¼” ~ 1” 2 or 5

UNF (Fine Thread) ¼” ~ 1” 2 or 5

AS/NZA 2451 ¼” ~ 1” 2 or 5

TC Bolt

Shear Stud

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Treaded Bar Standard Diameter Length

Metric Size M6 ~ M27 1 meter – 2 meters

Inches Size ¼” ~ 1” 3 feet – 6 feet

9.0 Quality Control

9.1 Mock –Up

GUIDELINES FOR MOCK-UP INSTALLATION

1. PREPARATION WORKS:1.1 Hand-over from civil section.

Thang Long subcontractor will receive all working areas completed by construction group and as well as check all areas before receiving:

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- All areas must be cleaned and free from debris.

- All markings and nearest reference groove / line must be marked by civil contractor.

1.2 Preparation of work.a) Tools and equipments.

- Line marking tool

- Ruling pen

- Spring wind tape

- Cutting machine (cut brick wall)

- Hammer

- Chipping gun

- Ladder

b) Material.- uPVC & PPR Pipes

- Latch

- Soft material for opening.

c) Line marking- Use ruling pen marking 2 points for center line of cutting line: 1

point at higher level and 1 point at lower level.- Use line marking tool in making center line for pipes.

- Offset from center to right and left of center line 30mm.

- Mark 2 lines for trench of pipe (Lines No.2, No.3)

- Base on reference level, mark high level and low level of trench.

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d) Cutting wall.- Check cutting machine and other equipments.

- Cut brick wall follow to line mark No.2, 3, 4, 5.

- Chip brick wall inside marking area.

- Clean area before continuing the works.

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2. INSTALLATION:

- Cut the pipe as per approved dimension and with shop drawing.

- Install the pipe inside the wall.

- Use spring wind tape to check and adjust dimension as per shop drawing dimension.

- Use latchs to fix the pipe to the wall. (refer to below figure)

- Install soft blocks at the end of pipe to make opening after civil contractor render the wall.(refer to below figure)

3. INSPECTION:a. Dimensions:

- Distance from existing wall (or reference groove) to center of pipe: at high level and low level point.

- Check level of soft block for above opening.

- Check level of soft block for below opening.

b. Visual check:- Solidify of pipe fixing.

- Seal pipes to ensure that binder can’t filled inside the pipe when plastering.

c. Other requirements:- Inside the pipe must be cleaned before installation.

- To ensure don’t have crippling strain of G.I pipe after fixing.

4. Hand-over to after installation finished.

- Working area must be cleaned after finish installation.

- To ensure that don’t to damage other installations of system when processing installation.

- Hand-over for other section.

9.2 List of Testing and Commissioning Tasks

Test Method and Test Plan, Test Record Forms, Inspection Forms

1. Test Method

Scope of Testing

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Scope of testing shall be shown following Table 1.

Table 1. Scope of Testing

System Method Judgment Standard

Cold and Hot water pipe Pipe leakage test ( by water,100 psi 2 hours)Not less than 12.5 bar or one and a half times the maximum pressure whichever is greater.(See specs. Section 13.3)

The pressure drop shall not drop more than 5% (See specs. Section 13.3)

Soil, Waste, Vent and Drainage pipe

Water filling test ( by water )(Fill with water to top of highest part of install area, 24 hours )

Water level will not change.

Hydraulic test (by water)

- Two (2) types of water pumps shall be used for testing,

- Portable motorized pump and manual hand pump.

- Two (2) water pressure gauges shall be installed at the test point of the pipe for monitoring the test pressure in the pipe. Range of pressure gauge shall be follow as,

a) 0 bar ~ 25 bar: Water Supply System

b) 0 bar ~ 15 bar: Hot Water Supply system, Plumbing and Sanitary Fixtures, Water Supply system.

Air-bleeding valve shall be provided to release the remaining

air inside the pipe.

To start up the testing, first fill up the pipe with water:

Step 1 - Use the Portable motorized pump to increase the pressure inside the pipe almost to the pressure required.

Step 2 - Use the Manual hand pump to increase the pressure to the final test pressure required by checking on the pressure gauges.

After 15 minutes later from finishing increasing to the final test pressure required, release the remaining air inside the pipe. Then increase the pressure to the final test pressure required by the Manual hand pump again.

The test duration is at least (24) hours, the pressure drop shall not drop more than 5% (See specs. Section 13.3)

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After approval of the leakage test, release the test pipe pressure to 0 bar and drain out the water in the pipe.

Water Filling Test

-Water filling test shall be applied to Soil, Waste, Vent and drainage pipe.

-Water filling test shall be done for floor by floor after pipe installation is finish.

- Before water filling test, all bends, changes in direction, ends of runs and all other openings should be plugged or capped with test plugs or tests caps.

- Install test tee 1000 mm from finished floor level

- Isolate each floor or section being tested by inserting tests plugs through test tees installed in the stacks.

- Once the stack is filled with water to 2000 mm, an inspector makes a visual inspection of the section being tested to check for leaks.

- Record the interval between pipe edge and water surface and water level shall be marked on pipe surface. 24 hours or longer later, check interval change by visual check. The change water level shall not be approved.

- Once the system has been successfully tested, it should be drained and the next section should be prepared for test.

- Testing of drainage system shall be carried out in sections by dividing the system horizontally. Each section shall comprise pipe works and fittings for three (3) floors required for testing.

2. Inspection and Test Plan

Test reports shall be prepared and filed. Copies of test reports shall be submitted as required. See Appendix for ITP Form – Cold and Hot Water Pipe – Hydraulic Leak Test and Soil/Waste/Vent/Drainage Pipe – Leakage Test (Water filling).

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10.0 Safety Plan

Thang Long shall carry out its works in the safest manner possible. Job hazard analyses shall be prepared and approved prior to setting out with specific tasks to perform. The health of the workers shall be a paramount concern of the Company.

Safety Measures

General

Safety shall be in first priority during construction, safety staff shall be present on site at all times to supervise and to remind workers to observe safety requirements. Stop work order shall enforce once it does not meet the safety requirement.

The labor force doing the installation work shall have undergone safety orientation and shall have been familiarized with the procedures related to their work

Safety shall be strictly observed. All safety equipment such as clothes, shoes, helmet, gloves, safety belt will be provided and regularly check during construction.

Kumho Engineer shall inspect all Sub-contractor’s tools prior to be use on site.

Kumho Engineer shall be present for all the safety site inspection.

Equipment intended for use shall have been inspected and tagged “Safe for Use”.

Safety on Installation of Pipe on High Elevation

Installed hangers and supports should be inspected first and be approved before installation of pipe.

Prior to installation of pipe on high elevation, an appropriate lifting gear should be use for lifting pipe. A competent examiner should determine the appropriate lifting gear for such weight of pipe before lifting of pipe should proceed.

11.0 Appendix

1. ITP form no. ITP-M-2:03- Hydraulic Test

2. ITP form no. ITP-M-2:02- Leakage Test

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