12 Common building stones of India – civillearners

12 Common building stones of India – civillearners

In India, there are many types of stones and most of them are suitable for building construction for more details read the following amazing posts.
 Types of rocks and Artificial stones

There are common building stones of India are:

1) Basalt and trap 
2) chalk
3) Gneiss 
4) Granite 
5) Kankar 
6) Laterite 
7) Limestone 
8) Marble 
9) Murum 
10) Quartzite 
11) Sandstone 
12) Slate 

1) Basalt and trap:

Basalt and trap
Classification: Igneous 
Qualities: Hard and tough; difficult to work. It’s sp. gr. is 3 and compressive strength varies from 1530 to 1890 kg / cm2 • 
UsesRoad metal. for rubble masonry, foundation work, etc. 
Localities: Maharashtra, Bihar. Gujarat, Bengal and M.P. 

2) Chalk:

Chalk
Classification: Sedimentary 
Qualities: Pure white limestone, soft and easy to form a powder. 
Uses: In preparing glazier’s putty, as colouring material in manu­facture of portland cement. 
Localities: Same as limestone. 

3) Gneiss:

Gneiss
Classification: Metamorphic 
Qualities: Splits into thin slabs: easy to work. It’s sp. gr. is 2.69 and compressive strength is 2100 kg/cm2 • 
Uses: Street paving, rough stone masonry work, etc. 
Localities: Madras, Mysore, Bihar. A.P,  Maharashtra, Bengal, Kerala and Gujarat . 
For better Understanding Watch the video below:

4) Granite:

Granite
Classification: Igneous 
Qualities: Hard, durable and available in different colours. Highly resistant to natural force, can take a nice polish. Its sp. gr. varies from 2·G to ‘2·7 and compressive strength varies from 770 to 1300 kg /cm2. 
Uses: Steps, sills, facing work, walls, bridge piers, columns, road metal, ballast, etc. It is unsui­table for carving. 
Localities: Kashmir, Madras, Punjab, Rajasthan, U.P., M.P., Mysore, Maharashtra. Assam, Bengal,
Bihar, Orissa, Kerala and
Gujarat. 

5) Kankar:

Kankar
Classification: Sedimentary 
Qualities: Impure limestone. 
Uses: Road metal. manufacture of hydraulic lime, etc. 
Localities: North and Central India.

6) Laterite:

Laterite
Classification: Metamorphic 
Qualities: Porous and spongy structure, easily quarried in a block, con­tain high percentage of oxide
of iron; available in a different colour. Its compressive stre­ngth varies from 18 to 32 kg/cm2 • 
Uses: Building stone. road metal, rough stone masonry work. etc. 
Localities: Bihar, Orissa, Mysore, U.P, Maharashtra. Kerala. A.P. and Madras.

7) Limestone:

Limestone
Classification: Sedimentary 
Qualities: Consists of carbonate of lime, easy to work. Its sp. gr. varies from 2.00 to 2.75 and comp­ressive strength is 550 kg/cm2.
Uses: Floors, steps, walls. road metal, manufacture of lime in blast furnaces, etc. 
Localities: Maharashtra, Rajasthan. Pun­jab, Gujarat, Andaman Islands, Bengal, Bihar, A.P., Hima­ chal Pradesh, M.P. and U.P. 
Important interview Question Dressing of stones (types)

8) Marble:

Marble
Classification: Metamorphic 
Qualities: Can take good polish and available in different colours. It’s sp. gr. is 2.65 and comp­ressive strength is 720 kg/cm2 • 
Uses: Flooring, facing work, columns, steps, ornamental work, etc. It can take a nice polish. It can easily be sawn and carved. 
Localities: Rajasthan, Maharashtra, Guja­rat, A.P, Mysore, M.P and U.P. 

9) Murum:

Murum
Classification: Metamorphic 
Qualities: Decomposed laterite’, deep brown or red in colour. 
Uses: Blindage for metal roads, for fancy paths and garden walls. 
Localities: Same as Laterite. 

10) Quartzite: 

Quartzite
Classification: Metamorphic 
Qualities: Hard. brittle, crystalline and compact; difficult to work and dress. 
Uses: Retaining walls, road metal, concrete aggregate, pitching, rubble masonry, facing of buildings, etc. 
Localities: Bengal, A.P., Himachal Pra­desh, Madras, U.P, Mysore, Gujarat, Punjab and Rajasthan. 

11) Sandstone:

Sandstone
Classification: Sedimentary 
Qualities: Consists of quartz and other minerals, easy to work and dress and available in different colours. Its sp. gr. varies from 2.65 to 2.95 and compressive strength is 650 kg/cm2. 
Uses: Steps, facing work, columns. flooring, walls, road metal, ornamental carving, etc. 
Localities: A.P., M.P., Punjab, Rajasthan, Maharashtra, Gujarat. Anda­man Islands, Bengal, Bihar, Himachal Pradesh, Kashmir, Madras and U.P. 

12) Slate: 

Slate
Classification: Metamorphic 
Qualities: Black colour and splits, long natural bedding plane,: non­-absorbent. Its sp. gr. is 2.89 
and compressive strength varies from 770 to 2110 kg/cm2. 
Uses: Roofing work, sills. dampproof courses, etc. 
Localities: U.P, LP., Bihar, Madras, Rajasthan and Mysore. 
Conclusion:
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