The size of marble chips used in terrazzo flooring varies from 3-6 mm. Marble chips of different colors are used. They are exposed by grinding operation once surface has set. Terrazzo flooring is comparatively more expensive.

In Double flagstones floors, steel beams are placed at a distance of about 3 meters Centre to centre and joist are placed at right angles to beans. The Flagstones of about 14 mm thickness and of suitable width are fixed on lower flanges and upper flanges.

In ribbed flooring, lateral ribs having same width as that of longitudinal ribs are provided if span exceeds 3 m. These are provided at intervals between 1-3 m.

Bricks are classified into 3 types ? first class bricks, second class bricks and third class bricks. Only first class bricks should be used in construction of reinforced brick flooring. The size of first class bricks is 19 cm x 9 cm x 9 cm.

Damp prevention in timber flooring can be prevented by providing a DPC layer below flooring. This is one of major problems faced in timber flooring. Anor problem faced with timber flooring is its high cost. Because of its high cost, generally, it is not used in residential buildings in India.

There are four elements of triple joists timber flooring. These are floorboards, bridging joists, girders and binders. Triple joists timber floors are also known as framed floors. This type of flooring is used for spans exceeding 7.5 m.

The base course in cement concrete flooring is made of lime concrete containing 40 % mortar and 60 % coarse aggregate. The nominal size of coarse aggregate is generally 40 mm. The mortar used has lime and sand in ratio 1:2.

The PVC tile flooring is resilient, smooth and good looking. It can be easily clean. It is however costly and can be easily damaged when it comes in contact with burning objects. The PVC tiles are usually not laid on wooden floor as cost of preparing surface to receive se types are considerably high.

In steel joist and stone floors, clear span of joists is equal to width of room. Length of available stone slabs is a factor on which spacing of rolled steel joists depends.

Granules of cork are heated with linseed oil to manufacture cork carpet. Cork tiles are available in different sizes, thicknesses and shades. The thickness generally varies from 5 to 15 m.