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Geography Paper 1 ,May/June 2008  
Questions:   1 2 3 4 5 6 7 8   Main
General Comments
Weakness/Remedies
Strength






























Question 2

(a) Describe the surveyor's chain.
(b) Outline any three problems that could be encountered in the use of the surveyor's chain.

_____________________________________________________________________________________________________
Observation

Most candidates that attempted this question could not adequately describe the surveyor's chain. The expected answers are:

-   surveyor's chain is 100ft long - -     -     made of steel wires

-   connected by a set of oval links

-   links are marked by brass tags

-   the brass tags are numbered 5,10,15,20 etc.

The problems associated with the use of the surveyor’s chain are:

-  inaccuracy of measurement as a result of bending of any of the steel wires

-  sagging of chain during use

-  any unnoticed obstacle along the line of chain

-  limit to the area that could be conveniently surveyed using chain -    broken grounds making chaining slow and difficult

-  chains are difficult to carry about.

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