GRANITE AND MARBLE WORKS - METHODOLOGY STATEMENT

 GRANITE AND MARBLE WORKS -  METHODOLOGY STATEMENT

Granite Flooring

1.    OBJECTIVE:

The objective of this method statement is to carry out the Granite and Marble Works by meeting the technical specification and complying with Standards.

2.    SCOPE:

The scope of this method statement includes at all areas at CTSIL, CTSIL site while executing it in accordance with Technical specifications.

3.    REFERENCE 

·         IS-Codes

·         Technical Specification

4.    TOOLS AND TACKLES

·         Trowels

·         Line Dori

·         Tube level

·         Plumb bob

·         Measurement Tape

·         Spirit levels 1 – 2m

·         Sand sieve

·         Aluminium straight edge

·         Right angle

·         Chipping tools

·         Masons hammer

·         Rubber hammer

·         Levelling threads

·         Tile cutter

·         Angle grinder

·         Masons

·         Brushes and buckets

·         Forma box

·         “ Good for Construction” Drawing

5.    METHODOLOGY

·         The marble / granite tiles shall be ordered in sizes as determined by site dimensions to avoid cutting at site.

·         The material received at site shall be checked for the following defects prior to acceptance.

·         Tiles of same type but with distinctly different colour or texture shall be rejected outright.

·         Tiles shall be free from holes, seams, shakes, pockets, strains and other effects and shall be of uniform colour and texture.

·         Dimensional tolerances shall be restricted to

§  Length + 0.5mm                  Width + 0.5mm

§  Aries    + 0.5mm                  Plane + 1 / 500

·         Ensure that the site is cleaned, taking care to remove any loose concrete, mortar or other substances.

·         All chasing for the concealed piping and electrical conducting etc. shall be carried out before commencement of work.

·         Make bull mark levels according to architectural specifications.

·         Design mix of cement mortar (1:6 or 8) to be followed.

·         Ensure that the tiles to be laid are matched, numbered and available in the required number for laying on the site.

·         For marble works, coat the bottom with sealant before laying. It is good practice to seal the top also after laying and polishing. This is done to the highly porosity of marble.

 

a)    CHECKS DURING EXECUTION OF WORK

·         As per drawing, work should be started by taking right angles for existing walls.

·         Laying starts as per the previously numbered tiles.

·         The surface on which granite or marble is to be laid is watered. A bed of mortar is placed on the floor, and tiles are put into position with white cement slurry.

·         Leveling is done with an aluminum straight edge and rubber hammer.

·         If there is any slope, it has to be decided in the bull itself.

·         Joint filler should make a joint filling material as per colour of the tiles.

·         Putty blade is used to rake all joints and fill joint material neatly as the joints will be paper joints.

·         For fixing tiles to wall, suitable stainless steel mechanical anchors shall be used.

 

b)    POST-EXECUTION CHECKS

·         All surfaces & edges, which will remain exposed after installation, shall be polished.

·         Cure all tiling works and joint filling works for 3 days.

·         After work is complete, ensure that it is covered with plastic sheet and Plaster of Paris and the area should be barricaded.

c)    SKIRTING

·         10mm tiles are used for skirting, and the height of the tile is 100mm.

·         Skirting is chamfered at the edge to 4mm. and fixed so that after the tile 4 mm of straight edge and 4 mm chamfered edge is seen outside. The skirting goes into the plaster by about 2mm.

·         Check the right angle that the skirting makes with the floor tile.

·         For skirting with granite the skirting will be pushed out as following.                                                

B 

Granite skirting detail

 

 

d)    COPING

·         The back of the granite should be pasted with Araldite and rough pebbles should be affixed to ensure proper bonding.

·         Measure granite as per the specifications of the architect 

·         The coping may be half – or full – bull nosed.

·         Tiles for treads, coping etc., shall be supplied with rounded / profiled edges, grooves etc., as shown in the drawings.

·         Cut out in marble / granite tiles shall be cut with a rebated edge to allow faceplates to finish flush with the finished surface.

6.    INSPECTION METHODOLOGY 

·          

·         Check for conformance of the tiled pattern and specifications to the approved drawings.

·         Check for uniformity in line and level visually.

·         Check of straightness of tiled surface. The fresh tiled surface should be of proper level using a spirit level / Aluminium straight edge or line Dori.

·         Ensure the cement and the sand have been checked / tested prior to tiling.

·         Ensure that the granite / marble is not broken / cracked and joints are well filled. In case of cracks near the edges, these cracks to be filled using epoxy compound.

·         After joint filing, ensure that joints are made even using an angle grinder.

·         Tap the tiled surface to check for hollowness. The tiled surface should be covered with POP and tarpaulin sheets to prevent damage to the tiled surface.

·         Ensure while fixing of granite door jambs, proper packing with cement paste throughout the entire contract surface of the granite slab and block work. This surface should be 90 degree to the floor.

·         During fixing of windowsills, ensure that the concerned mason immediately removes extra cement slurry / dripping.

·         Ensure chamfering of skirting is as per specifications.

·         Treads and risers to be of uniform dimensions

7.    RESPONSIBILITIES.

·         Construction Manager: He shall be responsible for overall management of construction activities.

·         Site Engineer: He shall be responsible for Executing in safe work method as per drawings and guide the supervisors and work men.

·          Site Supervisor: He shall be responsible managing all plant and machineries and labour and safety of the workers

·         QA/QC In charge: He shall be responsible for ensuring the quality of work as per the specifications and standards.

·         HSE Manager/Engineer: He shall be responsible for assisting to engineer/supervisor to ensure the safety of workers during the progress of work. Safety inductions of each staff and workers shall be done and daily PPE check to be done and tool box talk shall be carried out before the start of work. General safety awareness as well as particular safety precautions and guidelines for activity to be carried out in that particular day shall be discussed. 

·         Stores officer: He shall be responsible for storing of all materials. Also responsible for maintaining the record of incoming and outgoing and up to date stock details of materials.