In the calculation process flow is to determine the quantum of the thread the output of products per shift (power), number of workers, length of the production line, conditions of approval-time operations. 
  The flow of the beat is the average length of execution time with one worker (thread). 
If you set the rate of flow, Takt τ, (min), determined by the formula 

where TSM is time-shift (min); M - flow rate up. 
If you know the number of workers in the flow, the beat is determined by the formula

where T - time of production of the product (technological sequence), C (min); N is the number of workers in the stream.
  The rate of flow is determined by the following formulas: 

From these formulas determine the number of workers in the stream. The length of the production lines L, m, determined on the basis of number of workers in the flow, step working place lр.m, the coefficient of DAC, showing how many standard jobs on average per worker

The coefficient takes into account non-standard jobs, double jobs when one person works on two machines (installed on two tables), as well as replacement jobs. 
Flows for the production of underwear and light clothes take a DAC is 1.1 - 1.15 times. 
Step workplace flow for the production of light clothing take equal to 1.2 - 1.25 m, in the flow for the manufacture of linen is 1,15 - 1,2 m. 
On the basis of quantum of flow determine the conditions of the approval time operations flow to Takt flow taking into account the variations in their duration from a time in the range 5 - 10%.

where to is the duration implementation of the organizational operations (min); K - ratio of operations orthe number of jobs running an organizational operation. 
The multiplicity of operations occurs in cases where the duration of the technological operations sequencetreatment more tact flow.