partly because the climate of the indian subcontinent makes the long-term survival of organic materials difficult, the great majority of survivals of older indian art, from before the last few centuries, are sculpture in stone, metal or terracotta.it is clear there was a great deal of painting, and sculpture in wood and ivory, during these periods, but there are only a few survivals.
preferred bituminous aggregate sizes for road construction are given in en 13043 as d/d where the range shows the smallest and largest square mesh grating that the particles can pass . the same classification sizing is used for larger armour stone sizes in en 13383, en 12620 for concrete aggregate,.
a ballast cleaner also known as an undercutter is a machine that specialises in cleaning the railway track ballast gravel, blue stone or other aggregate of impurities.
neolithic, also known as the new stone age, was a time period roughly from 9000 bc to 5000 bc named because it was the last period of the age before wood working began.the tools available were made from natural materials including bone, hide, stone, wood, grasses, animal fibers, and the use of water.these tools were used by people to cut such as with the hand axe, chopper, adze, and celt.
a large number of indian standard is codes are available that are meant for virtually every aspect of civil engineering one can think of. during one’s professional life one normally uses only a handful of them depending on the nature of work they are involved in. civil engineers engaged in construction activities of large projects usually have to refer to a good number of is codes as such .
the jantar mantar is a collection of nineteen architectural astronomical instruments built by the rajput king sawai jai singh ii, the founder of jaipur, rajasthan.the monument was completed in 1734. it features the world's largest stone sundial, and is a unesco world heritage site. it is located near city palace and hawa mahal. the instruments allow the observation of astronomical positions .
indian machine tool manufacturers' association imtma is the apex industry body for the machine tool sector in india.comprising large-, medium- and small-scale units, the membership of imtma includes manufacturers in the entire range of metal working machine tools, accessories and other ancillary equipment for machine tools, cutting tools and tooling systems along with trading companies.
there are estimated to be more than 100 engineered stone suppliers in china alone. india also has roughly 40 slab producing units as of december 2012. the original companies that operate breton machines such as the italian companies, quarella, santa margherita and the taiwanese company romastone remain the most recognizable brands for marble.
the great trigonometrical survey was a project which aimed to measure the entire indian subcontinent with scientific precision. it was begun in 1802 by the british infantry officer william lambton, under the auspices of the east india company. under the leadership of his successor, george everest, the project was made the responsibility of the survey of india.