The unit price analysis needs a large database, both material inputs such as labor and machinery, it requires us to have flexible systems such information time to go Matrices prepared each price. By having usability of computer systems, the work we were doing more agile and precise, for now just a change in such databases, that all information contained in a Price System, automatically display updated.
One of the most common is called Excel, associated with Microsoft's Windows program, this Workbook is a powerful tool to manage databases and mathematical operations at high speed, your chances are very big and I think that there is hardly someone who is in a position to extract one hundred percent of the benefits of Excel. We will only use a fraction of the possibilities of the program, but will be more than sufficient for our purposes: developing a system of unit prices for construction, I should clarify, in order not to raise false hopes, that this system is not intended to substitute for prestigious program on the market, but become a useful tool for students or professionals who do not have money to take one of these programs.
Our system is built on several levels:
1 .- Data Base Materials, Manpower and Machinery. At this level we can manage the Value Added Tax (VAT), as we are required, with a single click in the Materials Database, you can get a catalog of Manpower. At this level, we have the table's overhead Manpower, which affect the wages paid to workers, and finally we will also have the database for the machinery.
2 .- In the second level arrays and cards we have where we will make every price analysis, using the information contained in databases.
3 .- The third level is represented by the catalog of all our prices.
4 .- The fourth and final level is where we will make our budget.
Let's start developing our Material Data Base: As discussed in Chapter 1, we will be listing the materials needed for the development of our matrices, considering how essential to build a dwelling. If we start building the foundation, we also started our database of stone materials such as sand, gravel, volcanic rock, tepetate, etc.
Then give way to cementing, in all cases will be left wide ranges to group materials by "families", so it will be easier to find the time of use.
Once the cementitious section, we list the partitions, blocks, bricks, etc., Then come the steel, timber for shoring, installation materials, finishes, bathroom fixtures, etc. The list is long, but the best is going to increase this as we occupy the more elements.
The following database is due for Labor, this is very small, because the specialists involved in the construction of a dwelling are very few, it is possible to step up when we had some action in works otherwise, such as buildings, housing estates, etc. For now, suffice it to the Pawn, Helper, Bricklayer, Plasterer, Painter, Electrician and Plumber.
In the field of Manpower, you can work with individuals or crews, but for this system would make us a little more complicated, because, in addition to the conventional list, we have to define the crews to use in our analysis.
Manpower is unique in that in addition to the amounts paid to each worker physically, consideration should be used to pay a percentage of the overhead represented by the employers contribution to IMSS, SAR, INFONAVIT, etc. This will see in Chapter 2.
The third database corresponding to the machine, as in the previous one, this is very short, as few machines are used in the construction of a house, will usually be the Concrete Mixer, Vibrator, etc. Once defined
our three databases, and we can begin to develop our Matrix. The "Lash of our book that will increase, because there are several steps to follow: Primary, where we will analyze the hourly costs of the machinery that we occupy.
The next "tab" will be aimed at Trial, we will analyze where the mortars, concrete, and in order. A series of matrices that we will need when we look at certain prices, for example, if we analyze the m2 of brick, we need to record the amount of mortar per m2 deal for the price of mortar, we take Matrix production per m3 of mortar, which in turn will occupy for the Cost Hours Mixer.
Finally, we will open tabs for the different items that make a constructive process: Earthworks, masonry, finishes, facilities, etc. When a client requests a price per Unit of Work Completed, such as concrete castle ml of 15 x 15 cm, reinforced with 4 bars of 3 / 8 "and ¼ stirrups @ 20 cm, we need to open a "tab" Integrated will call, where we will be working with Basic Unit Prices, integrating them into a new array to comply with the requirement of our budget.
the end of this process we arrive at our catalog, for which it will name a tab with the title, this is the database that deal to make our budgets. However, to use all this information quickly and safely, take care resources that Excel provides, so that using the "names" of concepts, we can "bring" our values \u200b\u200bor descriptions budget required.
hope to be clear in our explanations, on the basis that those who gain access to this short guide Using Excel, and have the minimum necessary preparation to use Spreadsheet. Demos
happened since the first chapter, where we will see how to prepare our book. We reiterate our best to answer any question that they could be present, please let me know: sergioamayas@gmail.com
One of the most common is called Excel, associated with Microsoft's Windows program, this Workbook is a powerful tool to manage databases and mathematical operations at high speed, your chances are very big and I think that there is hardly someone who is in a position to extract one hundred percent of the benefits of Excel. We will only use a fraction of the possibilities of the program, but will be more than sufficient for our purposes: developing a system of unit prices for construction, I should clarify, in order not to raise false hopes, that this system is not intended to substitute for prestigious program on the market, but become a useful tool for students or professionals who do not have money to take one of these programs.
Our system is built on several levels:
1 .- Data Base Materials, Manpower and Machinery. At this level we can manage the Value Added Tax (VAT), as we are required, with a single click in the Materials Database, you can get a catalog of Manpower. At this level, we have the table's overhead Manpower, which affect the wages paid to workers, and finally we will also have the database for the machinery.
2 .- In the second level arrays and cards we have where we will make every price analysis, using the information contained in databases.
3 .- The third level is represented by the catalog of all our prices.
4 .- The fourth and final level is where we will make our budget.
Let's start developing our Material Data Base: As discussed in Chapter 1, we will be listing the materials needed for the development of our matrices, considering how essential to build a dwelling. If we start building the foundation, we also started our database of stone materials such as sand, gravel, volcanic rock, tepetate, etc.
Then give way to cementing, in all cases will be left wide ranges to group materials by "families", so it will be easier to find the time of use.
Once the cementitious section, we list the partitions, blocks, bricks, etc., Then come the steel, timber for shoring, installation materials, finishes, bathroom fixtures, etc. The list is long, but the best is going to increase this as we occupy the more elements.
The following database is due for Labor, this is very small, because the specialists involved in the construction of a dwelling are very few, it is possible to step up when we had some action in works otherwise, such as buildings, housing estates, etc. For now, suffice it to the Pawn, Helper, Bricklayer, Plasterer, Painter, Electrician and Plumber.
In the field of Manpower, you can work with individuals or crews, but for this system would make us a little more complicated, because, in addition to the conventional list, we have to define the crews to use in our analysis.
Manpower is unique in that in addition to the amounts paid to each worker physically, consideration should be used to pay a percentage of the overhead represented by the employers contribution to IMSS, SAR, INFONAVIT, etc. This will see in Chapter 2.
The third database corresponding to the machine, as in the previous one, this is very short, as few machines are used in the construction of a house, will usually be the Concrete Mixer, Vibrator, etc. Once defined
our three databases, and we can begin to develop our Matrix. The "Lash of our book that will increase, because there are several steps to follow: Primary, where we will analyze the hourly costs of the machinery that we occupy.
The next "tab" will be aimed at Trial, we will analyze where the mortars, concrete, and in order. A series of matrices that we will need when we look at certain prices, for example, if we analyze the m2 of brick, we need to record the amount of mortar per m2 deal for the price of mortar, we take Matrix production per m3 of mortar, which in turn will occupy for the Cost Hours Mixer.
Finally, we will open tabs for the different items that make a constructive process: Earthworks, masonry, finishes, facilities, etc. When a client requests a price per Unit of Work Completed, such as concrete castle ml of 15 x 15 cm, reinforced with 4 bars of 3 / 8 "and ¼ stirrups @ 20 cm, we need to open a "tab" Integrated will call, where we will be working with Basic Unit Prices, integrating them into a new array to comply with the requirement of our budget.
the end of this process we arrive at our catalog, for which it will name a tab with the title, this is the database that deal to make our budgets. However, to use all this information quickly and safely, take care resources that Excel provides, so that using the "names" of concepts, we can "bring" our values \u200b\u200bor descriptions budget required.
hope to be clear in our explanations, on the basis that those who gain access to this short guide Using Excel, and have the minimum necessary preparation to use Spreadsheet. Demos
happened since the first chapter, where we will see how to prepare our book. We reiterate our best to answer any question that they could be present, please let me know: sergioamayas@gmail.com