Sep 21, 2022
Rate Analysis of M25 Concrete Manual Mix and (Ready Mix Concerte) RMC
Sep 17, 2022
External Painting Work - Standard Operating Procedures
Jul 23, 2022
IS Codes
Jun 4, 2022
Surat Chennai Greenfield Experssway in Solapur District
May 31, 2022
WHAT IS BUILT UP AREA, CARPET AREA, SUPER BUILTUP AREA?
Apr 3, 2022
Internal Painting Work - Standard Operating Procedures
Mar 14, 2022
Flooring Work - Standard Operating Procedure
Flooring
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.
Flooring:
Preparatory Works:
Remove all materials stuck on slab top and concrete protrusion.
Clean slab top with broom and water jet.
Mark the reference level on walls usually at 600mm from FFL (Level should be transferred to all flats from Staircase and lift entrance level).
If conduits to be fixed on floor due to choking or customer changes at later stage, it should be fixed on floor with saddle clamps and additional clamping to be done at wall and floor corner area.
Do mortar bed in 1:8 proportion as per reference level. Bed thickness should be 40mm and it should not be less than 25mm.
It is important to set the tiles according to approved tile setting out drawing.
Do check for feasibility of fixing skirting in line with wall finish face, in case skirting cant be fixed in line with wall face, it should be brought to the notice prior commencement of flooring and correction or corrective measure should be taken.
Fix the Kitchen Platform verticals over floor as per drawing and make sure they are embedded in wall by 2 (In case of conventional Kitchen Platform). Ensure the top of vertical is in level and as per specified height in approved drawing.
Do checked tiles received for flooring are of correct specification as per approved drawing.
Do fix first tile in dry with 10mm in from wall face as per start point. Fix the two more tiles at two corners of wall and check the line, level and right angle.
Do fix tiles in between these tiles and check the layout.
Tiles should be fixed either tight joint or with spacer as specified in Approved tile set out drawing.
For cutting tiles diamond cutting blade shall be used.
Work Method:
After finding the layout satisfactory, then fix the start tile with cement slurry of required consistency and level it with the help of wooden mallet.
Do fix tiles at the end of both walls and check its alignment and level.
Fix tiles in between these tiles with cement slurry and check the line level alignment.
Do fix tiles by rows parallel to set out and check for line and level after fixing each tile.
After completion of flooring it is important to keep human traffic away from them. When the tiles appear firm enough, usually after 3 hours, they should be cleaned thoroughly with sponge to avoid staining on tile surface.
Post Flooring:
After 3 hours do check the flooring for consistent color tone.
Surface should be even and level.
Lippage if more should be adjusted by tamping with rubber mallet or by keeping some weight on it.
From distance of 1.5 meter no chips, cracks and other visible damages shall be seen.
After finding work to satisfactory level skirting fixing should be started.
Skirting shall be fixed in line with wall finish face.
Skirting back shall not show a voids / pockets behind.
Ensure skirting tops are at same level and there is no gap between skirting and flooring.
In case of spacer joint fill the joint with cement paste and rack it properly to ensure uniform grout application on top of it.
Do cure the flooring for minimum 3 days.
Protect the floored area with bubble guard sheets.
Team
CBEC India
Dec 4, 2021
Granite Framing for Door and Window - Standard Work Procedure
Granite Framing
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:
Do check opening size and its right angle.
If any correction needs to be done it shall be done prior commencement of work.
Do cut the frame members from single slab of granite to ensure the uniformity of visual effect.
Edges of frame members cut from slab should be polished / chamfered as specified in approved drawing.
Frame shall have a 450 chamfer joint on all visible corners of frame.
With the help of Resin hardener adhesive make the back of frame rough to ensure bonding with bedding mortar. Apply resin hardener adhesive on back of granite and sprinkle sand on it to form a key.
Make two holes in staggered on each vertical member for fixity .
Granite frame fixing:
Frame should be fixed in position according to approved drawing and as per adjacent finishes.
Full thickness of frame should be visible from all side for window and from sides and top for door frame.
With cement mortar of 1:4, fix the verticals of frame in position and check for its alignment with keeping top and bottom member in place.
With the help of resin hardener fix the top member in place.
Do fill void above top frame member with cement mortar.
Fix the temporary supports to members to ensure no de-bounding in later stage.
Cure the mortar for minimum 7 days.
After 3 days fix the Pentagon nylon frame fixing screws 10 x 125 mm and recheck the verticality. Screws should be counter sunk by 5mm.
Do apply light coat of clear oil on granite face for protection.
After first coat of paint, fill the screw hole with Tmax and matching grout mix.
Post Frame work:
Do check for opening dimensions, line, level and plumb.
Do check corner joints and granite to granite joint, there should not be any gap.
Do check for any visible defect.
Team
CBEC India
Nov 26, 2021
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
Nov 20, 2021
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