Equipment Used In Chain Surveying

This is a metallic peg or nail like structure that is used to indicate the measured distance taken by a chain.

Equipment used in chain surveying.

Chains are the measuring instrument used in surveying formed by the 100 links of 4mm galvanized mild steel wire. It is a system of surveying in which sides of various triangles are measured directly in the field and no angular measurements are taken. Every aspect of the life requires some measuring units. Antique surveying instruments for sale fall into several categories.

These rings provide the flexibility to the chains. The necessary requirements for field work are chain tape ranging rod arrows and sometime cross staff. These links are joined by 3 circular or oval wire rings. It is the simplest kind of surveying it is adopted when level of accuracy required is not high.

If the measuring distance is too long then it makes it difficult to measure from one point to another in. This rod is. Surveying tripods surveying bipods fiberglass grade rods aluminum grade rods builder s grade rods story poles laser levels auto levels transit levels hand levels abney levels surveyor s brush axes land surveying markers land surveying rods marking paint surveying prisms prism poles gnss equipment. Beyond those three essential categories you will find compasses clinometers survey crosses drawing instruments tripods chains and more.

The principle of chain surveying is to provide a skeleton framework of straight lines which can be plotted to scale if the lengths of these lines are pre determined either with a chain or a surveying tape. Arrows also known as making pins or chaining pins are made of tempered steel wire 4mm in diameter and generally. Arrows are is used to counting the number of chains in chaining. The framework must mostly consist of triangles.

These are the theodolite total station measuring tape and level and rod. Pegs are made of hard wood or iron and are 40 mm square by 50 cm in length and are used for permanently marking. Equipment used for chain surveying and its uses 1. Metric chain is two types 20m chain and 30 m chain 20 m chain have 100 links and 30 m chain have 150.