GAIL (India) Limited

57Each coat shall be allowed to dry before the next one is applied. Further each coat shall be inspected andapproved by the Consultant/Engineer-in-charge before the subsequent coat is applied No portion of thesurface shall be left out initially to be patched up later on.For new work, three or more coats shall be applied till the surface presents a smooth and uniform finishthrough which the plaster does not show The finished dry surface shall not show any sings of crackingand peeling not shall it come off readily on the hand when rubbed.13.1.5 PROTECTIVE MEASURESDoors windows floors, articles of furniture etc and such other parts of the building not to be white washedshall be protected for being splashed upon Splashing and droppings, if any, shall be removed by thecontractor at his own cost and the surfaces cleaned Damages if any to furniture or fittings and fixturesshall be recoverable from the contractor.13.1.aColour washing with lime:13.1.a1 Materials:Clear-colle : This shall be made from glue and boiling water by mixing 1 kg Of glue to every 15 litres ofwater. The mixing shall be suitably tinted to match with colour of colour washing as directed. Glue shallconform to I. S 852-1969Lime: Lime used shall be freshly brunt class ‘C1 lime ( flat lime and white in colour conforming to I.S.712-1973.Water: Water shall conform to M-1.Gum: Best quality of gum shall be used in the preparation of white or colour not affected by liem shallbe used in preparing in the colour washThe relevant specifications for the materials and workmanship of item No 1 shall be followed except thatit shall be for colour wash13.1.a2 Workmanship:Sufficient quantity of colour wash enough for the complete job shall be prepared in one operation to avoidany deference in shade. The basic white wash solution shall be prepared in accordance with item 1.Mineral colours not affected by lime shall be added to the white wash solution. No colour wash shall bedone until a sample of colour has been approved. It shall be noted that small samples of colour appearslighter in shade than when the same shades are applied precisely to large surface The colour shall be ofevent tint, over the whole surface. It is patchy or otherwise badly applied, it shall be rejected &preparation of colour wash with pigment shall be as under:(a) With Yellow and Red Ocher.Solid lumps if any in the powder shall be crushed to powder and solution in water prepared and thenadded to white wash sieving it through a coarse cloth, mixed evenly and thoroughly to the white wash insmall quantities till the required shade is obtained.(b) With Blue Vitriol:Fresh crystals of hydrous copper sulphates (i e blue vitriol) shall be ground to fine powder and dissolvedin small quantity of water Sufficient quality of solution enough to produce the colour wash of requiredshade shall be strained through a clean cloth, the filtrate being mixed even and thoroughly to the whitewash.Colour wash from other pigment shall be prepared in accordance with the instructions of the manufacture