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Scope
Reference documents Definitions
Responsibilities Safety
Method Equipment Attachment
Scope
This statement is aimed to propose the procedures to be adopted to carry out marble flooring on the various room areas, FF Reception, Lobby, the stair case steps & landing
References
Drawing
EPC Contractor
UBC & General Construction Practice, STQ
MAR Dated 2.4.2000 Approved 4.4.2000 Perlato Royal marble for Administration Building Reception, FF lobby & stairs
MAR Dated 12.3.2000 Approved 30.3.2000 Blue Pearl marble for Worktop and Toilet Counters
Definitions
PSM Project Site Manager CSM Construction Manager
CS Construction Superintendent
SE Site Engineer
FM Foreman
QC Quality Control
Responsibilities
PSM shall control the overall operations
CM shall arrange the resources required accordingly
CS shall control, monitor and direct the SE, FM and workforce for the operations
SE shall be responsible for all the site operations and follow the instructions of the CS FM shall execute the operations deploying the workforce. FM shall explain in full in the
Statements were written by Professional Eng Suraj Singh Project Manager as well as Senior Project Engineer. Most of these were approved by EPC Contractor & Company (no sketches
language the work persons understand about all the instruction and the ToolBox talks every day and check that the same are followed up regularly
QC shall inspect all the operations according to the specifications EPC Contractor shall conduct surveillance
Safety
The workers shall receive a ToolBox Talk according to the project requirement relevant to the operation concerned every day prior to commencement of the activity
Proper illumination shall be provided in the dark area
The area to be laid with marble flooring system shall be closed for the general movement except those working there and be opened only when the work has properly been completed with hardboard cover protection spread on the newly laid finishes.
Only industrial cable / wires shall be used for the grinding machine with earthing arrangement to avoid any shock or mishap
The personnel working around the grinding machine shall use eyeglasses and all other Personal Protective Equipment
Safety Supervision
A competent inspector shall visit the area daily to assess the safety measures adopted. Any snag observed during the inspection shall be notified to the supervisor present who immediately act to bring the safety measures to an acceptable standard
Materials
Marble tiles 300x600x20mm (Directly placeable) and also Kitchen Work tops & toilet Counters, Reception Area + Lobby First Floor- Perlato Royal (Placeable according to the supplier’s details)
(Al Ain Cement and Marble Product Co) Proprietary Grout
Method
(Laying Marble Floor Tiles by SEMI DRY method)
The following activities are involved to carry out the marble flooring system
The areas of the concrete sub strata to be laid with marble shall be brush cleaned and dampened until absorption ceases followed by the finished floor level establishment by means of dots and rules
Total thickness for the marble flooring is 100 mm including 80 mm bedding screed (1 cement: 4 mortar sand) by weight and shall be applied as described below
The finishing layer shall be marble tiles 20 mm thick and be laid as described below
Details
The mortar for bedding the tiles shall be 1 part cement to 4 parts sand by weight, mixed semidry by a mechanical mixer with only sufficient water added to give a crumbly consistency which retains its shape when squeezed by hand permitting no fluidity
The mix shall be placed to a thickness approximately 10 mm greater than that actually required for the bed, thoroughly compacted by tamping and drawing off to the required level with a screed board. Only sufficient mortar shall be mixed and spread as can be covered with tiles before it attains its initial set.
Civil Contractor QC visual inspection shall be conducted
A slurry of 1 part cement to 1 part sand by volume shall be poured over the surface of the semi – dry mix bedding and spread with a trowel until it is approximately 2 mm thick
Dry marble tiles / flags shall then be laid on the slurry and beaten firmly into position with a wooden beater ensuring a true surface contact between the tiles and bedding is formed.
The marble tiles / flags shall be correctly positioned in both directions the time these are placed
The tiles shall neatly and accurately be cut to a close fit where necessary at abutments, around outlets, pipes and the like.
Civil Contractor QC Inspection shall be conducted for the correct formation of joint alignment and the level profile followed by EPC Contractor approval
The tiles shall be laid level or tops to 1- % falls in ‘wet’ areas as may be required.
The floor finishing shall be carried out using an electrically operated rotary grinding machine fixed with a carborundum stone of varying grades for the uneven edges or the protrusions as well as the fine range for the even areas to attain a smooth surface texture allowing water lubrication.
The grinding runs shall depend on the finishing profile formed. More varying profile shall be applied with additional grinding rotation till the acceptable one is achieved.
Plenty of water shall be used for this purpose. All the water shall be washed away after the grinding is completed.
Civil Contractor QC Inspection shall be conducted for the correct formation of joint alignment and the level profile followed by EPC Contractor approval
During grinding any portion damaged or effected badly shall be replaced to the specification requirement. Minor blown up or damaged tile shall be grouted with the proprietary compatible colour to match the marble texture
A seal coat shall be applied on the ground surface with an approved proprietary polishing material according to the manufacturer’s instructions after which the finished surface be cleaned, the arrangement to protect the finished areas be made by overlaying hardboards and closing the entry in general.
MOVEMENT JOINTS IN TILED FLOORS
Unless otherwise indicated in the documents, a 10-mm movement joint shall be formed at the perimeter of all the tiled floors and where the tiling meets structural features such as columns, machine bases etc.
Where a structural movement joint is provided in the base, a movement joint of the same width in the bedded finish shall be positioned immediately above
The movement joint cavities shall extend through the combined thickness of the finish and the bedding mortar, completely filled and sealed after grouting of the normal joints takes place.
Other standard items such as treads, risers, worktops and the counters shall be cut to the exact site dimensions with the wash basins and the sink blocks taken out. These preformed items shall be supplied completed in all respects and fixed to the supplier’s details
Major Equipment
Mechanical Mixer Wheel barrows
Mason’s tools in general
Grinding Machine with varying carborundum stone grades attachment
Statements were written by Professional Eng Suraj Singh Project Manager as well as Senior Project Engineer. Most of these were approved by EPC Contractor & Company (no sketches
Attachment
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