Standard time (manufacturing)

In industrial engineering, the standard time is the time required by an average skilled operator, working at
a normal pace, to perform a specified task using a prescribed method. It includes appropriate allowances to allow the person to recover from fatigue and, where necessary, an additional allowance to cover contingent elements which may occur but have not been observed.
Standard time =normal time +allowance 
Where; normal time =avg time *rating factor. 
Usage of the standard time.
Time times for all operations are known. 
Techniques to establish a standard time.
The standard time can be determined using the following techniques:
Method of calculation.
The Standard Time is the product of three factors:
The standard time can then be calculated by using:
 formula_1