Biện pháp thi công chống thấm dự án Feliz En Vista

Form FEV-RFI-V1.1 Project Address Package Employer Contractor RFA Ref No : : : : : : Feliz-En-Vista High-Rise Residential Development At Plot Y1, Thanh My Loi Ward, District 2, HCMC, VN Main Contract CapitaLand- Thien Duc Investment Co., Ltd CSCEC32 FEV-CSCEC32-ARCHI-MOS-RFA-006D - Method statement for waterproofing work REQUEST FOR APPROVAL (RFA) VINAQS CO., LTD ; To From: CSCEC32 Main Contractor : RSP ARCHITECTS PLANNERS & ENGINEERS (Vietnam) LTD Attention Descipline : Dang Thanh Sang; Mai Tran Bich Tram : Architecture Subject : Method statement for waterproofing work Date to Reply : 19-Jan-18 Name: Wang Shi Wei Date of Request : CC: CL SCI R Project Manager 16-Jan-18 RSP T&W ATICHA VQS R JRP CIDECO R DESCRIPTION: Dear Sirs, We would like to submit Method statement for waterproofing work Please review and approve R Critical (03 days) Normal (07 days) Regard, 16-Jan-18 CSCEC32- Main Contractor Date: Signed: Name: Wang Shi Wei REPLY: This review is for conformance with the general design concept and for general arrangement expressed in the documents Review shall not be construed to mean that the reviewer accepts the detail calculations and dimensions shown in the shop drawings or any deviation from the requirements of the contract documents Contractor is responsible for errors or omissions in the shop drawings; for meeting all requirements of the contract documents; for confirming and correlating job site dimensions; for information that pertains solely to fabrication process or to techniques of construction, and for the coordination of the work of all trades It is understood that the notation on the submittal is not to be construed as an authorization for additional work or additional cost RSP comments- 21 Jan 2018: Examined No objection with comments: MOS of waterproofing works shall be read in conjunction with relevant approved shop drawings, approved materials and the Fosroc's letter ref no: CV019.4 Demonstration for waterproofing works shall be done at mock up units under manufacturer's witness, recorded in photos for every step of the work process and submitted to Architect for record To supplement specifications for non-shrink grout material as required via our email dated 21 Jan 2018 Signed: RSP The Engineer: TW JRP SCI ATICHA CDC CL Approved Not Approved Date: Approved with comments but works can proceed on site METHOD STATEMENT OF FLOOR WATERPROOF WORK PROJECT: ITEMS: FELIZ EN VISTA HIGH-RISE RESIDENTIAL DEVELOPMENT TOWER A,B,C,D,PODIUM, PARTY APPROVAL DATE Capitaland- Thien Duc Investment OWNER Co., Ltd CONTRACTOR CSCEC32 CONSULTANT RSP ARCHITETS S PLANNERS&ENGINEERS(VIETNAM)CO.,LTD 16 9/1/2017 Rev I WATERPROOF WORK SCOPE The waterproofing areas of this project are as follows (for BLOCK A, B, C, D & PODIUM) Waterproofing system for roof, all tanks and landscape area will be illustrated in another method statement No Area Details Wet area of units (bathroom, powder room,maid’s 1:Tiling or timber toliet,P.E.S, loggia, shower area, AC ledge, yard, gallery kitchen) 2:screed and leveling mixed with waterproofing additive 3:2 coats waterproofing Common area (refuse chute room ,refuse chamber room,bin center, WC at common area, BOH,M&E room,lift pit, janitor room) membrane coating 4:R.C slab Note:specific screeding details refer screeding method statement II Construction preparation Material 1.1 Waterproofing membrane coating: Fosroc Brushbond Flex III or other equivalent products 1.2 Waterproofing additive: Mapei-Planicrete SP or other approved equivalent After diluted 1:3 with water,the ratio of Planicrete SP:cement:sand is 1:2:6 1.3 Sealant(Any approved equivalent.) 1.4 Non-shrink grout(Any approved equivalent.) 1.5 Fibre mesh Tools Protective clothing:gloves,goggles and mask Preparation equipment: Water jetting Mixing equipment: KW slow speed drill, 400 or 500 rpm, plus Fosroc propeller agitator Application equipment: Stiff brush,suitable spray equipment,roller Thickness measuring device: wet film thickness gauge III Floor Waterproofing System Waterproofing work plan Take the uint C-3BRbE as an example, indicating the waterproof area of each room in the unit PS: waterproof upturn 730mm in sunken a/c ledge, to be illustrated in related shop drawing Waterproofing detail for refuse chute rooms PS: Other common areas will be illustrated in related waterproofing shop drawing Typical floor trap waterproofing detail RWDP outlet combine detail More typical waterproofing detail refer related shop drawing IV Construction sequence Surface preparation 1.1 Pipe penetration treatment on floor If the pipe is for floor trap,change step 01 ,04as below, the rest are the same 1.2 For the embaded pipe on the wall, the pipe groove will be filled by mortar and make it flat with wall surface after the pipe and shower mixer valve installation on the wall 1.3 Corner treatment Note:create fillet between the walls and floor or walls and walls (Fillet size:30x30 Ratio:1:3 cemnt to sand,mixed with Planicrete SP) 1.4 Structural defects rectification Structural defects such as holes of tie rod on internal wall,honeycomb,blowholes,steel fixture,which will affect waterproofing application,shall follow related MOS approved by T&W and rectify before the commencement of waterproofing work Application 2.1 Pre-wet the substrates and make sure it is well saturated before and during the application for cementitous/concrete based, 2.0 kg/m2 2.2 Mixing ( Do not stir the product by hand, Must be installed in a low speed mixer Stir well.) 2.3 Using brush to apply the 1st layer(500μm) of Fosroc Bushbond Flex III onto the prepared and damped substrates,0.75kg/m2 2.4 Using brush to apply the 2nd layer 500μm of Fosroc Bushbond Flex III onto touch dried of 1st coat.0.75kg/m2 Note:application of following coat of Fosroc Bushbond Flex III in cross direction by stiff brush or trowel to obtain a continuous, unbroken film with the next coat applied after the previous coat has dried, aprx from 2-3hours After 1st coat completion, fence the area to protect applied surface Using wet film thickness gauge to check&ensure the applied waterproofing membrane thickness is accordance with manu facturer’s recommendation 2.5 Reinforcing works to corners and bad condition substrates by a prior layer of waterproofing and reinforced with netting The netting should be sandwiched in between the 1st and 2nd coat 2.6 Water ponding test STEP curb Build a temporary curb (curb high needs to be higher than 100mm) by surrounding the extending area of each room,apply waterproofing coats onto the curb STEP floor trap&pipe Block the pipe before water the room Pipe of floor trap shall be installed at design level(for full finish only, refer IV 1.1 step 01 For basic and bare finish, pipe will not be cut),water pipe&soil pipe shall be cut when intall basin and toilet STEP watering Note:During test, applicator shall monitor the water level every 2-3hours a time Test can only be qualified with no significant water level drop during the testing period and inspection by site staff If not, applicator shall repair coating surface and test again 2.7 Apply mortar protection layer Use mortar to apply a protection layer(approx 20mm) after the water test for waterproofing membrane succeed (mortar shall be mixed with waterproofing additive, After diluted 1:3 with water，the ratio of Planicrete SP(or other approved equivalent):cement:sand is 1:2:6.) 2.8 Screeding and leveling Mixed with additive.After diluted 1:3 with water ， the ratio of Planicrete SP:cement:sand is 1:2:6 Screeding and leveling work shall follow approved screeding method statement V Water Ponding Test Procedure After waterproofing work application,test shall proceed within 48h All water tests&waterproofing application shall be inspected by site staffs Procedure applied for full finish units 1st water ponding test for RC slab Duration:12h Water depth:100mm Fail Fill up defects&repair (OK) Waterproofing work application Repair 12h 2nd water ponding test(apply before screeding work) Duration:48h Water depth:100mm Fail Find out the cause of failure (OK) Mortar protection layer&Screed&Tiles Fail 3rd water ponding test(after finishing work) Duration:48h Depth:100mm Procedure applied for basic finish and bare finish units 1st water ponding test for RC slab Duration:12h Water depth:100mm Fail Fill up defects&repair (OK) Waterproofing work application Repair 12h 2nd water ponding test(apply before screeding work) Duration:48h Water depth:100mm (OK) Mortar protection layer(20mm) Screeding Fail Find out the cause of failure VI Protection The worker shall ensure that all the installation debris are removed Progressively before the commencement of the work After the work completed,the surface must be protected by proper barrier After bonding test,temporary kerb shall be carefully removed,not to damage the waterproofing layer applied Upon completion of works,any construction activities to be not carried out on the floor unless protective measures Mortar screed protection on floor must be placed after the water leaking test  ...METHOD STATEMENT OF FLOOR WATERPROOF WORK PROJECT: ITEMS: FELIZ EN VISTA HIGH-RISE RESIDENTIAL DEVELOPMENT TOWER A,B,C,D,PODIUM, PARTY APPROVAL DATE Capitaland- Thien Duc Investment OWNER Co.,... approved equivalent.) 1.4 Non-shrink grout(Any approved equivalent.) 1.5 Fibre mesh Tools Protective clothing:gloves,goggles and mask Preparation equipment: Water jetting Mixing equipment: KW slow... rpm, plus Fosroc propeller agitator Application equipment: Stiff brush,suitable spray equipment,roller Thickness measuring device: wet film thickness gauge III Floor Waterproofing System Waterproofing