Hydrant/Valve Xxxxxxxx. The Concessionaire shall provide suitable brick masonry xxxxxxxx in cement mortar 1:5 (1cement: 5 coarse sand) on cement concrete foundations 150 mm thick 1:4:8 mix (1 cement:4 fine sand:8 graded stone aggregate 40mm nominal size) 15 mm thick cement plaster inside and outside finished with a floating coat of neat cement, inside with cast iron surface box approved by fire brigade including excavation, back filling, complete Valve chamber shall be of the following size: For depths 100cm and beyond 120x120 cms Weight of C.I. frame and cover shall be 38 kg. 14 Pipe protection All pipes above ground and in exposed locations shall be painted with one coat of red- oxide primer and two or more coats of synthetic enamel paint of approved shade. All buried XX. Xxxxx shall be provided with protection against soil corrosion by applying two coats of coal tar hot enamel paint, two layers reinforced fiber glass tissue and finished with one coat of the above paint (as per IS: 10221)
