Equipment Used In Chain Surveying

The framework must mostly consist of triangles.

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. The necessary requirements for field work are chain tape ranging rod arrows and sometime cross staff. Every aspect of the life requires some measuring units. Metric chain is two types 20m chain and 30 m chain 20 m chain have 100 links and 30 m chain have 150.

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. Equipment used for chain surveying and its uses 1. Equipment used for chain surveying arrow. Pegs are made of hard wood or iron and are 40 mm square by 50 cm in length and are used for permanently marking.

These rings provide the flexibility to the chains. These are the theodolite total station measuring tape and level and rod. These links are joined by 3 circular or oval wire rings. 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. Arrows are is used to counting the number of chains in chaining. Arrows are made steel wires of diameter 4mm. It is the simplest kind of surveying it is adopted when level of accuracy required is not high.

Antique surveying instruments for sale fall into several categories. If the measuring distance is too long then it makes it difficult to measure from one point to another in. List of instruments used for chain surveying arrows. Arrows also known as making pins or chaining pins are made of tempered steel wire 4mm in diameter and generally.