WHAT ARE MAN-HOURS?
A man-hour is also known as a ‘person hour,’ which is the amount of work performed or done by one average person in one hour. Man-hour is used to estimate the total number of hours of uninterrupted work that the workers have done. This includes the work that has been done without any breaks or rest time. The managers usually take man-hours and add the break time to get the amount of time the work will take to complete.
To get an idea, let’s take a look at this example: If you are building a house, and you have a crew of twenty, and you expect them to work a forty-hour per week job, and you have anticipated that the project will take 3 months (12 weeks) twelve weeks for it to be completed, fully. You can calculate the man-hours by multiplying those forty hours by twenty, the number of laborers involved, and then multiply the rest of the product by twelve, which will equal up to nine thousand six hundred (9600) hours. So on average, a typical house construction requires 3 months of time, then the man-hours needed to build a house will be 9600.
GENERAL METHODS OF ESTIMATING MAN-HOURS?
There are two main methods to calculate the man-hours. Suppose an average total time employ is working is forty hours weekly:
- If we multiply forty hours each week by four weeks (in a month), we get one hundred and sixty hours for the whole month, a quick and simple way to get the man-hours.
- By using this technique, we can get the average number of work hours in a month. Forty hours per week, fifty-two weeks per year, and twelve months per year are known constants: forty hours per week multiplied by fifty-two weeks per year equals. This gives us an aggregate of the worked hours in a year and turns out to be a more accurate technique than the first one unless a particular calendar month and a year or the working population days per month are provided to you.
HOW MANY MAN-HOURS TO BUILD A HOUSE?
To calculate man-hours to build a house, we need to look at the following factors or the guidelines that will help you along the process:
1) DIVIDING THE PROJECT INTO COMPONENTS:
In the first part, to determine the man-hours to build a house, we need to split the project into more minor parts or components and then estimate the hours required to complete each part/component. The parts or components should be designated according to the labor involved in completing them. For building an apartment complex, one should consider marking, grading, excavation, concreting, brick masonry, roof laying, flooring, carpeting, welding, glazing, plastering, finishing, etc., in the estimate.
2) DETERMINING THE TYPE OF WORKERS NEEDED:
It is essential to know what types of activity in the process require what kind of worker while dividing the whole project. The main activities involved in constructing the house are plumbing, welding, carpentry, plastering, flooring, glazing, etc. They are divided in a way that one should know what part of the construction can be done by how many and what kind of labor ( mason, carpenter, painter, plumbers, welders, electricians, etc.).
For example, one should know how many plumbers would be needed for plumbing while looking at their duties (assembling, installing, maintaining the pipes, pressure testing of those pipes, fitting, and fixturing the heating and water drainage, etc.) that will be required while building the house.
3) ESTIMATING TIME FOR EACH COMPONENT:
In determining how many hours to build a house, after dividing the task into smaller components and knowing the type of workers needed to do so, we will see the estimated time they will take to complete those particular components. This will give us the man-hour that the workers took to complete the task from the start till the end without breaks.
Suppose you’ve done a specific activity like installing windows and doors in projects or homes that you’ve built before; you can take that experience and calculate the estimate for installing the windows and doors in the current project. For example, while building a particular house before it took one worker 2.5 hours per window, you’ll estimate it this time easily. If you’re not familiar with that activity, you might have to meet another contractor that will help you do so.
4) INCLUSION OF SUPERVISOR’S HOURS:
Including the hours of work for the person who is leading or managing the other laborers along with other supervisors will help you determine labor hours required to construct a house in a much proper way since the supervisors are there putting in the efforts managing the labors, assigning the duties and overall activities.
5) ACCUMULATION OF THE COMPONENT ESTIMATE:
After getting the type of work and the related workers involved, one should calculate and estimate their amounts; you add them to get a total or a whole estimate of how many hours to build a house. For instance, adding up the construction work, the paintwork, the wiring work, etc., to get an entire total.
6) ADJUSTMENT OF MAN-HOUR ESTIMATE AS WORK PROGRESSES:
Since all you are doing is giving an estimate, you need to be vigilant. You should closely look at the factors or the fudge factors that might influence the forecast after the calculation. It won’t affect the final estimate you evaluated to know how many man-hours to build a house.
7) TRACKING THE TIME
To get a proper, valid, and authentic estimate of man hours required for house construction, you need to have a reliable check-in with the workers and how many hours they are spending on the site of work. A proper and reliable way to keep track of the workers’ hours is put in.
The answer to this question is how many hours to build a house varies from location to location, the approval, the right place, the structure, the architecture, the different components that make up the task. But according to the people, the estimated shortest amount of time required to build a whole house would be as roughly estimated to be ‘The shortest’ is about three months.
While the building does not take up the types of components that add up to the man-hour, the different kinds of work, including the plumbing, electrical work, the finishing, etc., determine the time frame. The guide above would take you forward with the question of this article, and you would get an idea about the content.
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