Biện pháp thi công chống thấm dự án Feliz En Vista

No : FEV-CSCEC32-ARCHI-MOS-RFA-006D - Method statement for waterproofing work : : DESCRIPTION: REPLY: Signed: Approved with comments but works can proceed on site This review is for conf

Address : At Plot Y1, Thanh My Loi Ward, District 2, HCMC, VN

Package : Main Contract

Employer : CapitaLand- Thien Duc Investment Co., Ltd.

Contractor : CSCEC32

RFA Ref No : FEV-CSCEC32-ARCHI-MOS-RFA-006D - Method statement for waterproofing work

:

:

DESCRIPTION:

REPLY:

Signed:

Approved with comments but works can proceed on site

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.

16-Jan-18

16-Jan-18

Please review and approve.

Regard,

Descipline Architecture

Subject

Date to Reply 19-Jan-18

We would like to submit Method statement for waterproofing work.

Dear Sirs,

Method statement for waterproofing work

REQUEST FOR APPROVAL (RFA)

To

VINAQS CO., LTD ; RSP ARCHITECTS PLANNERS &

ENGINEERS (Vietnam) LTD

From: CSCEC32 Main Contractor

Attention Dang Thanh Sang; Mai Tran Bich Tram Name:

R Critical (03 days)

Norm al (07 days)

RSP comments- 21 Jan 2018:

Examined No objection with comments:

1 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

2 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

3 To supplement specifications for non-shrink grout material

as required via our email dated 21 Jan 2018

METHOD STATEMENT OF FLOOR WATERPROOF WORK

PROJECT : FELIZ EN VISTA HIGH-RISE RESIDENTIAL DEVELOPMENT ITEMS : TOWER A,B,C,D,PODIUM,

OWNER

Capitaland- Thien Duc Investment

Co., Ltd

CONSULTANT

S

RSP ARCHITETS PLANNERS&ENGINEERS(VIETNAM)CO.,LTD

16

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

1

toliet,P.E.S, loggia, shower area, AC ledge, yard, gallery

kitchen)

1:Tiling or timber 2:screed and leveling mixed with waterproofing additive 3:2 coats waterproofing membrane coating 4:R.C slab

2

Common area (refuse chute room ,refuse chamber

room,bin center, WC at common area, BOH,M&E

room,lift pit, janitor room)

Note:specific screeding details refer screeding method statement

products

diluted 1:3 with water,the ratio of Planicrete SP:cement:sand is 1:2:6

Protective clothing:gloves,goggles and mask

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

PS: Other common areas will be illustrated in related waterproofing shop drawing

More typical waterproofing detail refer related shop drawing

If the pipe is for floor trap,change step 01 ,04as below, the rest are the same

make it flat with wall surface after the pipe and shower mixer valve installation on the wall

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

( Do not stir the product by hand, Must be installed in a low speed mixer Stir well.)

2.4Using brush to apply the 2nd layer 500μm of Fosroc Bushbond Flex III onto

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

Using wet film thickness gauge to check&ensure the applied waterproofing membrane

waterproofing and reinforced with netting The netting should be sandwiched in

between the 1st and 2nd coat

STEP 1 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 2 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 3 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

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

is 1:2:6.)

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

1 st water ponding test for RC slab Duration:12h Water depth:100mm

Fill up defects&repair Fail

Waterproofing work application

2 nd water ponding test(apply before screeding work) Duration:48h Water depth:100mm 12h

Mortar protection layer&Screed&Tiles (OK)

3 rd water ponding test(after finishing work)

Duration:48h Depth:100mm

Find out the cause of failure

Fail

(OK)

Fail

Repair

1 st water ponding test for RC slab Duration:12h Water depth:100mm

Fill up defects&repair Fail

Waterproofing work application

2 nd water ponding test(apply before screeding work) Duration:48h Water depth:100mm 12h

(OK)

Find out the cause of failure

(OK)

Fail

Repair

Mortar protection layer(20mm)

Screeding

VI Protection

Progressively before the commencement of the work

the waterproofing layer applied

on the floor unless protective measures

test