The document provides specifications for installing terrazot tiles in risers of steps, skirting, and dado. It outlines requirements for tile thickness, preparation of the surface with plaster and mortar, laying the tiles with cement slurry, finishing, measurements, and rates. Tiles must be a minimum of 12mm thick and set in mortar, with joints as fine as possible. Height is measured to the nearest 5mm or cm depending on size, and the rate includes all materials and labor for the tile installation.

1. TERRAZO TILES IN RISERS OF STEPS, SKIRTING AND DADO
 Minimum finished thickness of tiles shall be 12 mm.
 The finished thickness of the upper layer shall not be less than 5 mm for size of
marble chipsfrom the smallest upto 12 mm.
 And not less than 6 mm for size of chipsvarying from the smallest upto 20 mm.
 Where the bigger sized chipsare used the tiles shall be not less than 20 mm thick.
Preparation of Surface
 Preparation of Surface shall be as specified.
Laying
 12 mm thick plaster of cement mortar 1:3 (1 cement : 3
coarse sand), shall then be appliedand allowedto harden.
 The plaster shall then be roughened with wire brushes or by
scratching diagonallines 2 mm deep at approximately7.5 cm
centres both ways.
 The back of tiles shall be buttered with a coat of grey cement

2. slurry and edges with grey or white cement slurry to match the shade of tiles, and
set in the mortar.
 These shall be tamped and corrected to proper planes and lines.
 The tiles shallbe set in the required pattern and butt jointed.
 The joints shallbe as fine as possible.
 Top of skirting or dado shall be truly horizontalwith projection from finish wall
surface not more than tile thickness and jointstruly vertical except where
otherwise indicated.
 The risers of steps, skirting or dado shall rest on the top
of the tread or flooring. Where full size tiles cannot be
fixed, the tiles shall be cut to the required size and their
edges rubbed smooth.
Curing, Polishing and Finishing
 Polishing shall be done only with hand.
 Curing and finishing as specified earlier.
Measurements
 The thickness of the skirting shall be as stated.

3.  Length shall be measured along the finished face of riser, skirting or dado correct to
a cm.
 Height shall be measured from the finished level of tread or floor to the top (the
underside of tread in the case of steps). This shall be measured correct to 5 mm in
case of risers and skirting (not exceeding 30 cm in height).
 In case of heights more than 30 cm, as in the case of dado and on walls, the height
shall be measured correct to a cm and such work shall be paidfor separately.
 The area shall be calculatedin square metre, correct to two places of decimal.
Where the height of risers, skirting or dadodoes not admit of full size or other
finished size tiles and the tiles are to be cut (sawn), nothing extra shall be paid for
the same.
Rate
 The rate shall includethe cost of all materials and labourinvolvedin all the
operationsdescribed above.
 Nothing extra shall be payablefor use of cut (sawn) tiles to suit the size of risers,
skirting, portionsof dado etc.