The Importance of Standard Time in Marble Building

Introduction

Standard time is a crucial concept in manufacturing industries as it helps determine the optimal time required to complete a task. In the case of Mark’s Macho Marbles, standard time is used to establish efficient production process for building marbles. By analyzing the observed times for each element and calculating the normal time, Mark can set a benchmark for productivity. Additionally, by factoring in allowances and performance levels, Mark can determine the expected output per hour. This essay will discuss the importance of standard time in marble building, including how to calculate it and its implications for productivity.

Calculating Mean Observed Time and Normal Time

To establish standard time, Mark’s Macho Marbles needs to calculate the mean observed time and the normal time for each element of marble building. By analyzing the data collected over ten cycles, we can determine the average time taken for each element.

• Mean Observed Time:
  • Element 1: (2.23 + 2.27 + 2.25 + 2.23 + 2.26 + 2.27 + 2.22 + 2.26 + 2.23 + 2.22) / 10 = 2.253 minutes
  • Element 2: (1.30 + 1.28 + 1.34 + 1.35 + 1.31 + 1.27 + 1.37 + 1.31 + 1.35 + 1.33) / 10 = 1.322 minutes
  • Element 3: (1.75 + 1.80 + 1.77 + 1.85 + 1.88 + 1.84 + 1.83 + 1.80 + 1.85 + 1.83) / 10 = 1.818 minutes
  • Element 4: (2.79 + 2.71 + 2.65 + 2.61 + 2.63 + 2.63 + 2.65 + 2.63 + 2.65 + 2.63) /10 = 2.656 minutes
  • Element 5: (1.62 + 1.60 + 1.62 + 1.62 + 1.64 + 1.66 + 1.62 + 1.66 + 1.60 + 1.62) /10 = 1.632 minutes

Now that we have calculated the mean observed time, we can proceed to calculate the normal time by multiplying each element’s mean observed time by its respective rating factor.

• Normal Time:
  • Element 1: Mean Observed Time (2.253 minutes) * Rating Factor (0.95) = 2.140 minutes
  • Element 2: Mean Observed Time (1.322 minutes) * Rating Factor (0.85) = 1.124 minutes
  • Element 3: Mean Observed Time (1.818 minutes) * Rating Factor (1.15) = 2.090 minutes
  • Element 4: Mean Observed Time (2.656 minutes) * Rating Factor (1.10) = 2.921 minutes
  • Element 5: Mean Observed Time (1.632 minutes) * Rating Factor (1) = 1.632 minutes

Calculating Standard Time

To calculate the standard time for each element and the entire job, an allowance factor of 20 percent of the job time needs to be considered.

• Standard Time:
  • Element 1: Normal Time (2.140 minutes) * Allowance Factor (20%) = 2.568 minutes
  • Element 2: Normal Time (1.124 minutes) * Allowance Factor (20%) = 1.349 minutes
  • Element 3: Normal Time (2.090 minutes) * Allowance Factor (20%) = 2.508 minutes
  • Element 4: Normal Time (2.921 minutes) * Allowance Factor (20%) = 3.505 minutes
  • Element 5: Normal Time (1.632 minutes) * Allowance Factor (20%) = 1.958 minutes

To calculate the standard time for the entire job, we sum up the standard times of all elements:

• Standard Time (Entire Job):
  • (Element 1) Standard Time: 2.568 minutes
  • (Element 2) Standard Time: 1.349 minutes
  • (Element 3) Standard Time: 2.508 minutes
  • (Element 4) Standard Time: 3.505 minutes
  • (Element 5) Standard Time: 1.958 minutes
  • Total Standard Time = 11.888 minutes

Implications for Productivity

Now that we have established the standard time for each element and the entire job, we can determine the expected output per hour based on different performance levels.

• If the worker performs at 100 percent of the standard:
  • Units completed per hour = (60 minutes per hour) / (Standard Time per unit)
  • Units completed per hour = (60 minutes per hour) / (11.888 minutes per unit)
  • Units completed per hour ≈ 5 units per hour
• If the worker performs at 90 percent of the standard:
  • Units completed per hour = (60 minutes per hour) / (Standard Time per unit * Performance level)
  • Units completed per hour = (60 minutes per hour) / (11.888 minutes per unit * 0.9)
  • Units completed per hour ≈ 5 units per hour

Conclusion

In conclusion, standard time plays a vital role in determining optimal production efficiency in marble building at Mark’s Macho Marbles. By calculating the mean observed time, normal time, and standard time for each element and the entire job, Mark can establish benchmarks for productivity and measure worker performance against these standards.

Knowing the expected output per hour based on different performance levels allows Mark to evaluate the workforce’s productivity and identify areas for improvement or potential bottlenecks in production.

By adhering to standard time guidelines, Mark’s Macho Marbles can optimize their marble-building process, increase productivity, and ultimately deliver a higher quantity of quality marbles to their customers within a set timeframe.