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Basic Problems in chaining - To run a parallel to chain
Unit 1- Surveying
Basic Problems in chaining
To run a parallel to chain line through a given point
I Method
AB is the chain line, C is the given point through which parallel line is to be drawn. Through ‘C’ drop a perpendicular CE to the chain line. Measure CE. Select any other point F on the line and erect a perpendicular FD. Make FD=EC. Join CD.
II Method
Select any point F on the chain line (Fig(b)). Join CF and bisect at G. Select any other point E on the chain line. Join EG and prolong it to D such that EG = GD. Join C and D.
I Method
AB is the chain line, C is the given point through which parallel line is to be drawn. Through ‘C’ drop a perpendicular CE to the chain line. Measure CE. Select any other point F on the line and erect a perpendicular FD. Make FD=EC. Join CD.
II Method
Select any point F on the chain line (Fig(b)). Join CF and bisect at G. Select any other point E on the chain line. Join EG and prolong it to D such that EG = GD. Join C and D.
Last modified: Thursday, 28 April 2011, 9:21 AM