Different Types of Surveying Chains

Different Types of Surveying Chains

Following are the various types of chain in common use:

1.     Metric chains

2.     Steel band or Band chain

3.     Gunter's chain or surveyors chain

4.     Engineers chain

5.     Revenue chain

1.  Metric Chain:

·        Metric chains are made in lengths 20m and 30m. Tallies are fixed at every five-meter length and brass rings are provided at every meter length except where tallies are attached.

2.  Gunter's Chain

·        Length = 66' (22 yards), No of links = 100, Each link = .66'

·        Used for measuring distances in miles or furlongs (220 yards), acres (Area).

3.  Engineer's Chain

·        Length = 100', No of links = 100, Each link = 1'

·        Used in all Engineering Surveys.

4.  Revenue Chain

·        Length = 33', No of links = 16

·        Commonly used for measuring fields in cadastral Survey.

Types of Measuring Tapes in Surveying

Tapes are made of different materials:

1. Cloth or linen tape

•        Used for subsidiary measurements

•        Very light, easy to handle

•        May effect by moisture

2. Metric steel tape

•        Made of steel 

•        Outer end is provided with a ring for holding

3. Invar tape

•        Used for high precision work

•        Made of alloy steel

4. Synthetic tape

•        Made of glass fiber with PVC coating

•        These are used for short measurements