Toilet Dado - Standard Work Procedure

 Toilet Dado

Introduction:

This standard operating procedure enumerates the scope of Tiling work to be executed    in Tower area as specified in the approved drawings and at places when instructed by the Tower-in-charge.

Responsibility:

 The respective Tower-in-charge is responsible to execute the work as per procedure.

Safety & protection:

PPEs like safety belts at height, helmets, safety goggles and ear plugs etc. should be used properly. 

Ensure the working area is kept clean for easy access.

Proper illumination to be provided during the work, if required.

Educate the workmen through pep-talk meeting. 

Preparatory works:

Ensure pressure testing of concealed plumbing is done.

Check the verticality of plaster using Plumb Bob and right angle of adjacent walls.

Check the line / surface of plaster using straight edge for correctness (If not found in line and verticality redo the plaster on wall).

Check door and window sizes are maintained correctly.

Tile layout marking to be done on wall with chalk as per approved drawing.

Check tile top and granite top are at same level.

Check service openings are at correct locations as per drawing.

Check waterproofing top is within the FFL.

Clearance for electrical work done in toilet area, to be taken from electrical department.

Using tile pieces fix alignment pads on wall.

Tiles to be soaked in water for 2 hours before using.

Work method for Tile Dado work:

Work should be carried out in proper illumination by arranging artificial light. No work should be carried out in dark or improper illumination. 

Ensure tiles received are as per drawing.

Fix a straight edge at dado tile bottom of second row. Ensure the top level of straight edge and second row dado tile bottom marking are at same level.

Make a cement paste of required consistency and fix the first full tile as per the starting point shown in drawing. Cement paste should be applied over a surface where tile has to be fixed and on tile back surface too (Thickness of paste should not be more than 10mm after fixing tile). Press the tile over wall surface and check its line, level and verticality. To align the tile in position use wooden mallet. 

Repeat step 2 to fix wall tiles of that row. (No gap should be made between two tiles)

After fixing all tiles in row, check line, level and plumb.

Repeat the stapes 2, 3 and 4 to complete dado work on wall.

Ensure all services openings are made in tiles perfectly by fixing flange / cover plate over opening.

On completion, check for any hollow sound over installed tile surface. If there is any hollow sound fill the cement slurry.

If there is any gap between the tile surface an plaster, then fill it with cement slurry. 

Make sure tile surface is clean and no cement slurry stains left over tile surface.

Curing should be ensured for next 7 Days by sprinkling water over surface.

Repeat all above points to complete dado on other walls in toilet.

IMPORTANT NOTES:

Experienced person and proper tools should be used for cutting tiles. 

Hole in tile should be made with drill bits of less than flange size.

If tiles surface is chip off (Natra), use it where cut tiles are required by removing chip off portion. In any case do not allow to fix surface chip off (Natra) tile.

Before starting tiling make sure, granite use for making frame is from same slab or from same lot in one flat.

In ledge wall corner tiles should be fixed with V groove of 5 x 5mm.

Team

CBEC India

Attached Terrace Waterproofing - Standard Work Procedure

 Balcony/ Dry Terrace/ Attached Terrace Waterproofing

Introduction:

This standard operating procedure enumerates the scope of Waterproofing work in toilets to be executed in Tower area as specified in the approved drawings.

Responsibility:  

The respective Tower-in-charge is responsible to execute the work as per procedure.

Safety & protection:

PPEs like safety belts at height, helmets, safety goggles etc. should be used properly. 

Ensure the working area is kept clean for easy access.

Proper illumination to be provided during the work, if required.

Educate the workmen through pep-talk meeting. 

Preparatory works:

Cleaning of sunken slab base and sides of beams shall be carried out as regards all those materials, mortar, oil etc. thoroughly by wire brush and the area shall be washed clean.

PVC sleeves/ shuttering box used to made cutout should be removed.

Sunken slab should be filled with water and next day should be inspected for leakages.

If Leakages found, then cracks should be open out by making grove and pressure grouting by socket should be done. After completion of treatment sunken slab should be again recheck for any leakages.

Work method for Waterproofing:

Base coat using cement, sand and 10mm aggregates in proportion 1:3:1 with waterproofing compound (Fosroc Conplast X 421 IC) @ 150ml per bag of cement shall be applied over top of base slab of sunk. Maximum thickness of base coat shall be 25mm.

Base coat shall also be applied to the sides of the toilet sunk up to one foot above the finished floor level (F.F.L) of the adjacent floor. 

Curing of base coat shall be done by ponding for 3 days and checked against leakage. Leakage, if observed shall be rendered with reapplication of base coat to ensure no leakage.

 Floor traps and plumbing lines shall be installed, Slope of 1:100 shall be provided. Floor trap shall be fixed with respect to finished floor level (F.F.L) of the terrace.

Area of pipe which is going through the hole / opening provided in Slab should be made rough by applying cement solvent and sprinkling crush sand over it so that bonding between mortar and PVC pipes will be ensured.

AAC Block bats / brick bats should be made wet thoroughly for about 15 minutes prior to their placing.

Cement mortar in 1:4 proportions should be prepared and laid on slab. Mortar mixed shall be used within 1Hour of preparation.

 Pre-soaked AAC Block bats / brick bats shall then be laid in straight / radial, by inserting AAC block bats to a depth of about 15mm by light tamping with the help of mallets. Distances between adjacent layers of AAC Block bats / brick bats shall not exceed25mm.

 Application of AAC block-bats shall proceed from one corner. 

Mortar should be filled up to half height of brick bats and it should be cure for minimum 3 days. 

After curing is over, the surface shall be applied with a finishing coat of cement, sand and 10 mm aggregates in the proportion 1:3:1 with waterproofing compound (Fosroc Conplast X 421 IC) @ 150ml per bag of cement till top of brick-bats.

 Top coat shall be of neat cement slurry of adequate consistency and shall be done monolithic with topping of brick-bats.

Finished surface shall then be cured for at least 7 days by ponding and then tested for leakages, if any.

IMPORTANT NOTES:

Water-proofing once done, shall not be broken or pierced. If water proofing is to be punctured, due care shall be taken to limit the damage to the restricted area. The cracks due to hammering shall not spread over the large area.

Repairing of the punctured area shall be done by using bonding agent and expansive grouts.

Team

CBEC India

10 YEARS GUARANTEE BOND FOR WATERPROOFING FORMAT

GUARANTEE FOR WATERPROOFING

The agreement made this……………………….Day………………….202... between…………………………………………………… (GUARANTOR) Or one part And the M/s (...................... Developers) (There in after called the EMPLOYER of the other part).

WHERE AS THIS agreement is supplementary to the main contract here in after called the contract/Work order no.……………….Dated………………………………………………...and

Made between the GUARANTOR OF THE ONE PART and the EMPLOYER of the other part where by the contract or inter alia, understood to render the building and structures in the said contract recited completely water and leak proof. 

AND WHERE AS THE GUARANTOR agreed to give a guarantee to the effect that the said structures will remain water and leak proof for 10 (Ten) years from the date of completion of work.

NOW THE GUARANTOR here by guarantees that the work done by him under item Nos………………………………………………………………………….of  the contract quoted above will Render the structures completely water and leak proof and the minimum life of such work shall be 10(Ten) years to be reckoned from the date of completion of the main contractor.

Provided that the guarantor will not be responsible for leakage caused by earthquake or cracks caused by structural defects or by misuse of roof for any operations & use which will damage the treatment on the roof or any alteration by way of any construction of additional storey or part or due to adjoining construction involving removal in parts of the treatment done earlier or replacement of flooring, buried pipes, sanitary fittings like water closet etc. in toilet.

During this period of guarantee the guarantor shall make good all defects and in case of any defects being found, render the building water and leak proof to the satisfaction of the EMPLOYER at Guarantors own cost and shall commence the work for such rectification within seven days from the date of issue of the notice from the EMPLOYER calling upon him to rectify the defects failing which the work shall be got done by the EMPLOYER by some other contractor at the GUARANTOR’s cost and the decision of the EMPLOYER as to the cost payable by the guarantor shall be final and binding.

IN WITNESS WHERE OF these presents have been executed by the Guarantor 

M/s……………………………………………………………………………………….and

by for and on behalf of M/s (............................. Developers) on the day, month and year first above written.

UNDERSIGNED, SEALED and delivered by GUARANTOR 

In the presence of

UNDERSIGNED FOR AND ON BEHALF OF THE EMPLOYER BY

In the presence of.

Team 

CBEC India