FIELD WORK OF SURVEYING
Theodolite, basic surveying instrument of unknown origin but going back to the 16th-century English mathematician Leonard Digges; it is used to measure horizontal and vertical angles. In its modern form it consists of a telescope mounted to swivel both horizontally and vertically. Leveling is accomplished with the aid of a spirit level; crosshairs in the telescope permit accurate alignment with the object sighted. After the telescope is adjusted precisely, the two accompanying scales, vertical and horizontal, are read. Mounted on a tripod with adjustable legs, the theodolite is used in the field to obtain precise angular measurements for triangulation in road building, tunnel alignment, and other civil-engineering work. The transit is a variety of theodolite that has the telescope so mounted that it can be completely reversed, or transited. The phototheodolite, a combination camera and theodolite mounted on the same tripod, is used in terrestrial photogrammetry for mapmaking and other purposes. This article was most recently revised and updated by Amy Tikkanen, Corrections Manager. surveying: History …were called topographic instruments, or theodolites. They included pivoted arms for sighting and could be used for measuring both horizontal and vertical angles. Magnetic compasses may have been included on some.… triangulation …surveying device known as a theodolite, and the entire triangle is established. By constructing a series of such triangles, each adjacent to at least one other triangle, values can be obtained for distances and angles not otherwise measurable. Triangulation was used by the ancient Egyptians, Greeks, and other peoples at… Triangulation , in navigation, surveying, and civil engineering, a technique for precise determination of a ship’s or aircraft’s position, and the direction of roads, tunnels, or other structures under construction. It is based on the laws of plane trigonometry, which state that, if one side and two angles of a triangle are known, the other two sides and angle can be readily calculated. One side of the selected triangle is measured; this is the baseline. The two adjacent angles are measured by means of a surveying device known as a theodolite, and the entire triangle is established. By constructing a series of such triangles, each adjacent to at least one other triangle, values can be obtained for distances and angles not otherwise measurable.
CONCRETE LABORATORY MANUAL
Concrete is a construction material composed of cement, fine aggregates (sand) and coarse aggregates mixed with water which hardens with time.Which Gives High Strenght
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Admixture Material
Admixture is defined as a material other than cement, aggregate and water used as an ingredient of concrete, added to the batch immediately before or during mixing, which help increase knowledge of diff concrete
The crackdown on civil society
The crackdown on civil society
The Right to Information Act
Right to Information is derived from our fundamental right of freedom of speech and expression under Article 19 of the Constitution. If we do not have information on how our Government and Public Institutions function, we cannot express any informed opinion on it. Democracy revolves around the basic idea of Citizens being at the center of governance. And the freedom of the press is an essential element for a democracy to function. It is thus obvious that the main reason for a free press is to ensure that Citizens are informed. Thus it clearly flows from this, that the Citizens Right To Know is paramount.
Civil engineering Standard data
All standard data's of design mix General notes for civil Concrete covers Repairs Curing methods
IS code for civil engineering student
IS code for Steel and RCC design
Principal of Geotech Engineering
Historical perspective Origin of soil and grain size Wt volumes relationship Plasticity and structure relationship Classification of soil Self compaction Permeability Seepage
SATELLITES IMAGERY AND REMOTE SENSING
Notes of SATELLITES available in the attatchments below. You can find the overview and types of Satellites in the pdf's attatched. These include topics such as History, How Satellites Work, Satellite Frequency Bands and Antennas, Orbit Distance, Pros & Cons, Applications, types, etc. If you need the videos related to Satellites, Click on this link - https://www.youtube.com/results?search_query=SATELLITES+Ajaze+Khan
Notes on CPM and PERT method in Construction Technology
in this notes the handwritten notes of Arihant academy was attached all the details and calculations of CPM and PERT method was contain in this pdf its for self study only. useful for Civil engineering students as well as management students.