boq waterproofing (1)

7/30/2019 BOQ Waterproofing (1)

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WATER PROOFING

(Quoted Rates are for all heights, depths, levels, leads and lifts)

The operations describe below are only indicative & the item is to be executed as per technical/ manufacturer's specification.

Testing shall be done by ponding water (150mm depth) for 72 hours.

Note: (The Water proofing work must be executed by an approved specialized

Agency. The Contractor shall give a 10 years guarentee as per instruction of the

Project Manager).

Brick bat coba waterproofing

Providing & laying brick bat coba 125 mm thick (average) consisting of

1st layer: cement slurry @ 2.2 kg per square meter mixed with acrylic water proofing

compound

2nd layer: 15 mm thick (minimum) plaster with cement mortar 1:4 ( 1 cement : 4 coarse sand)

mixed with acrylic water proofing compound

3rd Layer: Brick bats laid over the 2nd layer leaving joints of 15mm to 25 mm & jointed filled

with cement mortar 1 : 4 ( 1 cement : 4 coarse sand) mixed with acrylic water proofing

compound including making gola with brickbat at the junction of wall & RCC slab.

4th layer: 20 mm (average) plaster with cement mortar 1:4 ( 1 cement : 4 coarse sand) mixed

with acrylic water proofing compound and finished with flating coat of neat cement over

horizontal surface & vertical walls up to required heights.

The whole terrace so finished shall be flooded with water for a minimum period of two weeks

for curing and for final test.

All above operations to be done in order and as directed and specified by the Engineer - in -

charge

with average thickness of 125 mm and minimum thickness at Khurra as 65 mm 1,258

(Plan area to be measured for payment)

Providing and laying water proofing treatment to vertical and horizontal surfaces of depressed

portions of WC/Toilet/Kitchen external walls and the like consisting of



Cleaning the sunken roof surface and walls from dust, dirt, cement slurry etc by means of

wire bruch, dust removing brush and scraper etc. and plastering the entire surface with 12

mm thick cement plaster mix of 1 :4 (1 cement : 4 coarse sand)

Wetting the surface prior to application to Tapecrete without free water standing

Application of 1st coat of Tapcerete acrylic polymer modified cementitious slurry coating over

the surface and to be taken to vertical surface and turned down

Laying fiber glass cloth over the Tapecrete applied surface and vertical surface of walls when

the first coating is still green and allowed to air cure for at least 4 (four) hours.

Application of one coat of Tapecrete brush topping coat over the treated surface and allowed

to air cure for aleast 4 (four) hours and water cure for next two days.

Laying 12mm thick cement plaster 1:4 (1 cement: 4 coarse sand) mixed with Cico no. 1 @

1.5 kg per bag of cement, normal curing of the roof shall be done prior to allowing traffic.300

Sunken area filling

Providing and laying on sunken areas broken light weight concrete block bats of

approximately 600 kg. per cum density laid, consolidated, finished smooth, including finishing

& grouting the top layer with water proof cement mortar with CICO and as per specifications

and drawing.

R/O

Water Proofing with Crystalline method as per the manufacture specification( XYPEX,

Krytone & BASF).Vendor Specification to be submiited along with offer

Below Raft 2,276

On Retaining Wall 974

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