Flooring

Cement Concrete Floor 

1. Check that formation is properly compacted with  water, and that thickness of base concrete and the topping is as specified. 
2. See that proper slope has been given to the floors where necessary to allow for cleaning and washing. 
3. See that the work is done in panels not exceeding 2 metres square laid alternately with dividing glass strips on all the four sides. The top edge of the glass strip should be flush with the  concrete surface and should not be proud of the  surrounding surface or lower. 
4. See that the water cement ratio  is  properly controlled. Excessive water decreases the strength and does not allow proper bond for the smoothing layer and result in stripping of surface mortar. Smoothing of the floor should be completed within 30 minutes of laying concrete. 
5. See that the concrete is  properly compacted but not overdone to an extent which brings excess of water and matrix  to the top. 
6. Mix the entire quantity of dry cement for floor in one room  and keep it separately as cement from different stocks gives  varying color to the floor. 
7. See that curing is done for at least 10 days. 

Terrazo Flooring

1. Entire quantity of cement, pigment and marble chips for floor in one room should be  mixed before starting the work on flooring. A small quantity of material for top filling grout should be kept separately for use during grinding. 
2. See that marble chips are of correct type and grade and that pigments are of good quality to give permanent colour. 
3. Do not heap 'up the mix of cement, pigment and aggregate so that  bigger aggregate falls to the bottom. 
4. The floor should be laid in panels not exceeding 2 metres square. See that joints in terrazo floor  are over the corresponding joints in the  structural slab and glass  or aluminium strips are used for them. 
5. Terrazo topping should be laid when the under layer is reasonably hard but still plastic.  Normally the period is 18 to 24 hours. Provide a layer of cement slurry before laying topping. 
6. Avoid excessive troweling and ramming of topping and see that proper anchorage has been provided-for the dividing strips. Steel Work, Utilities, Finishing Items Etc. 
7. Study the Indian Standard Code of practice and apply carefully for the specified finish. Cutting of floor by,grinding machine at per IS code must be followed. 

 Other Types of Floor

1. For terrazo tiles and other types, such as glazed tiles, linoleum, rubber tl<n>rs carry out the work as specified. Study Indian Standards and manufacturer's insuuctions for taking appropriate precautions.