Author: Ibrahim

Tapes are available in a variety of materials, lengths and weights. The various types of tape in common use are described below . Cloth or linen tape: These are closely woven linen or synthetic materials and varnished to resist moisture. They are available in 10-30 m length and 12 to 15 mm width. Disadvantages of…

If great care is not taken in folding and unfolding the chain, the chain links can bend and the joint rings can be distorted, causing the chain to be different from its standard length. This will introduce measurement error when working in surveys. Furthermore, the chain cannot be boxed without being properly folded.Before putting it…

Gunter, revenue, engineer and metric chains are different types of chains, commonly used for surveying. Chains are mostly divided into 100 links. While the gunter’s chain is 66 feet long, the revenue chain is 33 feet long and the engineer’s chain is 100 feet long. Metric chains are either 30 meters or 20 meters long.…

Suppose a plan is required for a small area . The surveyor must first examine the land to determine how the work can best be arranged. This is known as a reconnaissance survey. In this process, the surveyor selects suitable ground points to be used as stations such as A, B, C, etc. Stations are…

Main Station: A main station is a point on a chain survey where two sides of a traverse or triangle meet. These stations dictate the boundaries of the survey and are designated by capital letters such as A, B and C.Tie station or sub-station: A tie station is a station on a survey line that…

To decide on the best skeletal framework plan for surveying a field, one must base one’s decision on the least effort required to produce a map with the desired detail and minimum distortion. . The following points should be kept in mind:Through reconnaissance it should be ascertained that due to the presence of thick hedges,…

The principles followed in chain survey are: The entire area to be surveyed is divided into a framework structure consisting of several well-connected networks of ‘well-conditioned’ triangles.The details are to be located by lateral measurements called ‘offsets’ with respect to the sides of the triangle or any other sub-lines running between the sides.

A chainsaw is an instrument for taking linear measurements in the field. A chain survey is completed by taking only linear measurements.