Roll material for fences is measured in linear quantities
To determine how much repair or construction works and the materials used usually use not a classic meter, but a unit called a running meter. It is used in the manufacture different types products when buying furniture. Most often, this indicator is also used for the construction of new facilities, including a running meter of a fence. This is required to calculate the amount of material required for the future fence.
What are the differences between meter concepts
With the help of a linear quantity, what can be rolled into a roll is measured. It means only the length of the product, and its width is not taken into account. With its help, the calculation is facilitated, the cost of production is reduced. Because often the width building material is a standard value, and sometimes it makes no sense to pay attention to it.
This value also consists of 100 cm. In the very word "linear" directly indicates that only length is taken into account. After all, "to drive" means to unfold in one direction, strictly in a straight line. You can imagine that the material itself, rolled into a roll, is just a straight line.
On the packaging of rolls of many building materials, you can see the price tag, where it is written how much the linear value is. But there are also those that have a price for a certain area. In this case, not only the length is taken into account, but also the width of the product. The area equal to 1 m 2 has a square area with the dimensions of each side - 1 m.
To calculate the area of \u200b\u200ba rectangular plot or raw materials for construction, you need to multiply the length by the width. The result obtained is the area expressed in m2. Linear and square meterwe have only one similarity. It is 100 cm long. Otherwise, they are different.
The linear method cannot measure area, it is intended only for measuring length. But it can be easily converted into a square meter if the width of the product is known, which must be multiplied with meters for the calculation.
Linear value for fences
This is the value of a traditional fence, the canvas of which is a profile sheet or a tree. It will be equal to a simple meter if the height of one sheet is also equal to 1 m. Just as the width is not taken into account when calculating the amount of roll material, since it is standard, the height is not taken into account when erecting the fence. It must also be permanent. But it should be borne in mind that the height of the fence does not always coincide with the size of the sheets of building material.
If, for example, a hedge is built a meter high, and profiled sheets with a height of 1 m are used, then the linear value of the fence will be equal to a meter of building material. But if the fence is higher, and the profiled sheets or boards are used the same, more of them will already be needed. Therefore, before buying raw materials, everything should be correctly calculated.
Calculations
Such simple constructionlike a fence around a plot requires precision calculation like any other object.
Attention! Competently and in accordance with all the rules, the construction diagrams, together with all the required calculations, will help to avoid errors in installation and problems during operation.
The fence consists of several elements:
- the main frame. This role is played by the racks mounted in the foundation. They carry the main load;
- spans. As a rule, they use profile sheets, wooden planks, mesh and concrete;
- stiffening strips;
- fasteners.
To avoid unnecessary financial costs, it is necessary to make simple measurements and calculations of how much the material will cost, using simple mathematical techniques. If the length of the fence is divided by the width of the building material that is used as a canvas, the calculation will result in a number corresponding to the required number of sheets.
Examples of
Let's say the fenced area has the shape of a rectangle with sides of 30 m and 20 m. First of all, we determine how much the perimeter will be. And it will be equal to the length of the fence. For this, the lengths of the sides are added and multiplied by 2. The perimeter of such a section will be 100 m.
For further calculations, it is enough to know the width of the raw materials used and the height of the fence. For example, it will be equal to 1 m, and the raw material will be corrugated board. As a result, you will need to buy 100 sheets. But just in case, it's better to buy a little more in order to have a stock.
If the width is approximately 2 m, a minimum of 50 sheets will be required. That is, to determine how many sheets are required, you need to divide the perimeter by the width of the material. In order to determine how many meters of material is required for the construction of the fence, we multiply the perimeter by the estimated height.
That is, to install a meter-long fence along a 100-meter perimeter, 100 linear quantities of building material will be required. To erect a two-meter high fence, you will need 200 m of the same building material, and so on.
If the price of one linear quantity is known, then it is not difficult to calculate how much the building material necessary to install the fence will cost.
Speaking about how to calculate a fence made of corrugated board, you need to remember what the main parts of this structure consists of. The main elements of the fence made of profiled sheet are the foundation for the fence, the frame of the fence and the corrugated board itself, with which the spans between the supporting posts are sewn up. Therefore, the calculation of fences from corrugated board is performed separately for each of the main structural elements fences.
Calculation of a fence from corrugated board online
The corrugated fence calculator presented on this page will help you save time and avoid possible mistakes. You only need to enter your data and select one of the options from the drop-down lists. After you fill in all the fields, click the "Calculate" button.
Calculating the need for a profiled sheet for fences made of corrugated board, the calculator, depending on the selected brand of profiled sheet, will immediately give out the total amount of material required for the construction of the fence. In this case, the program itself will take into account the size of the necessary overlaps between adjacent sheets.
In addition, determining the amount of materials required for the fence from the profiled sheet, the calculator will calculate the required amount roofing screws for fixing the profiled sheet to the joists or posts. It should be noted that the calculator will give an approximate result, since it does not take into account the terrain features, wind load, the shape of the enclosed area and other very important characteristics.
Fence calculation from corrugated board - online calculator
Calculation of a profiled sheet for a fence manually
In order to determine how much corrugated board is needed for the fence, it is necessary to select the brand of the profiled sheet. This is due to the fact that different brands of corrugated board can have different widths. Moreover, in order to calculate the amount of corrugated board for the fence, you need to know both the full and the working width of the sheet.
As you can see from the above figure, the useful width of the corrugated board depends significantly on the shape of the profile.
To find out how much corrugated board is needed for the fence, you should, first, decide on the principle of fastening the material. Profiled can be mounted either horizontally or vertically. In this case, installation can be carried out with a solid surface or with gaps for pillars. It is easy to see that there are four fence options in total, each of which is calculated in different ways.
Fastening sheets horizontally without gaps for posts
In this case, the brand of the profiled sheet does not matter - in order to calculate how much profiled sheet is needed for the fence, you just need to take into account the overlap in the calculation, which is the sum of half the width of the support post and 10-15 mm. It should be noted that this overlap is taken into account from the length of the sheet, not its width.
In the case of the horizontal arrangement of the corrugated board on the fence, it is recommended to take a sheet, the length of which will be 2 times the overlap more than the distance between the support posts. That is, with a distance between the posts of 2.5 m and an overlap of 40 mm, the sheet should be 2.58 m long. Thus, the fastening between the sheets will be carried out through the posts, which will seriously strengthen the structure.
In this case, it is not difficult to calculate the fence from the corrugated board - the perimeter of the fenced area should be divided by the distance between the posts - the resulting value will be equal to the number of sheets for the fence. It should be borne in mind that the manufacturer can provide almost any length of the corrugated sheet up to 12 meters. Therefore, if your site has an irregular shape or irregularities, you can always order corrugated board of different lengths for its fencing, thereby reducing possible residues to zero.
Fastening sheets horizontally with gaps for posts
With a similar method of fastening, the calculation of the profiled sheet for the fence is carried out in a manner similar to the previous one. The only difference is that there is no need to take into account the overlap, and the length of the sheets should be 10-20 mm less than the width of the purlins in order to take into account possible unevenness of the posts.
Fastening sheets vertically without gaps for posts
First of all, you need to find in technical characteristics the selected brand of corrugated board useful (working, effective) sheet width. Depending on these values, the width of the purlins is determined, and, as in the previous case, joints must necessarily fall on the pillars. In order to determine the distance between the posts, add the useful width of the sheets and subtract the width of the post once.
For example, the calculation of a fence made of C-21 corrugated board will look like this. Suppose you want three sheets per run. Its useful width is 1000 mm and the width of the posts is 100 mm. Therefore, the width of the purlin will be: 1000 × 3-200 \u003d 2800 mm. The total number of sheets that will be required for a fence with a plot perimeter of 60 m is determined by the formula:
and is equal to 60 sheets of C-21 corrugated board. In this case, overlaps will fall on the support pillars. The number of pillars is obtained by dividing the perimeter by the distance between them, rounded down.
Fastening sheets vertically with gaps for posts
In order to calculate a fence made of corrugated board in this case, you need not only useful, but also the actual width of the sheet. You can find out the required distance between the posts by adding the actual width of one sheet with the useful width of the remaining sheets and adding 20 mm to take into account the gap between the sheet and the support post.
Thus, if you have three sheets of C-21 per one run, then its width will be equal to: 1000 + 1000 + 1051 + 20 \u003d 3071 mm. With a column width of 100 mm and a 60-meter perimeter of the site that will enclose a fence made of corrugated board, we calculate the material according to the formula given in the previous section. In total, you will need 57 sheets of corrugated board.
An obvious disadvantage of the vertical method of fixing sheets, regardless of the presence or absence of gaps between the corrugated board and the posts, is the impossibility to flexibly change the width, which results in a large amount of waste with a complex or uneven shape of the fence. In this case, in order to avoid additional costs, the number of sheets should be multiplied by 1.1 and rounded, again downwards.
Another saving option is to make a detailed plan for installing the fence in advance based on the site plan. This will allow you to understand in advance where and how much waste will be and, possibly, re-arrange the poles to avoid them.
Calculation of the foundation of a fence made of corrugated board
This is the most complex calculation of all that is necessary to create a reliable site fence. It is almost impossible to carry out such a calculation independently, without the necessary knowledge and training.
For correct calculation bearing capacity foundations, it is necessary to know the characteristics of the soil at the location of the fence, as well as such data necessary for the calculation as the depth of soil freezing and the prevailing direction and strength of the wind, which are characteristic of this particular area.
Fence from corrugated board - calculation of material for installation of foundations
Therefore, often, instead of calculating a fence from a profiled sheet, foundations are made "by eye". Therefore, if you decide not to attract specialists and not to order a project for the construction of a fence on your site, it is better to choose the most proven structure of the fence foundation.
The most reliable and durable is the combined strip-and-column foundation for the fence. In this case, each support of the fence has its own foundation, which are connected to each other by a reinforced concrete tape. Its main function is to distribute external loads acting on the fence along its entire length.
In addition, the strip foundation reduces the negative consequences of possible soil deformations in individual sections of the fence, linking all of its spans into a single structure.
Height strip foundation can be of the order of 0.5-0.6 m, while deepening it below the soil surface is enough for only 0.3 m. The depth of concreting the foundations of the fence supports is of much greater importance.
In order to determine its value, you can make a simple calculation of the fence from corrugated board. As initial data, we will assume that the length of the fence span is 2.50 m, and the height of the fence is 1.60 m. The area of \u200b\u200bthe profiled sheet of one span in this case will be: 2.50 × 1.60 \u003d 4.0 m².
The value of the aerodynamic coefficient for flat vertical surfaces is constant and equal to 1.4. If we take the value of the speed wind pressure (depending on the region of construction) equal to 40 kg, we get a wind load of 224 kg for each support of the fence.
If we assume that the wind load on the pole is evenly distributed along its entire length, the height of the force applied will be half the height of the fence. Thus, the magnitude of the torque will be: Мкр \u003d Pxh \u003d 224 × 0.8 \u003d 179 kg / m.
If we divide the obtained value by the coefficient of the moment of resistance, which is a constant value and equal to 225, we obtain the foundation depth equal to 0.8 m.
But this calculation was made without taking into account the characteristics of the soil in the construction area. Therefore, most often the foundations for the fence are deepened by the amount of soil freezing characteristic of a given area. For most regions of the middle zone, the soil freezing depth is 1.20 m. Concreting of foundations for pillars to such a depth negates the possibility of soil swelling when it freezes, which can raise or tilt the foundation.
Calculation of a fence from corrugated board: the choice of materials for the supports of the fence and horizontal guides for the installation of corrugated board
Most often, the posts and logs of fences with sheathing made of profiled sheet are made from a thin-walled metal profile pipe. To select its section, the same calculated values \u200b\u200bof the loads are taken that were used to determine the forces acting on the fence posts. In any reference book you can find tables of permissible loads for various metal profiles.
Usually, for the installation of pillars of such fences, a profile pipe with a section of 80 × 80 or 60 × 60 mm is used, and for horizontal girders, a profile of 60 × 30 or 40 × 20 mm. In the overwhelming majority of cases, for a reliable fence from a profiled sheet, 60 × 60 pillars and 40 × 20 lags are enough.
A large profile is required only for regions with either increased wind load or very high snow cover with low temperatures (or both at once). If such weather is uncharacteristic for your region, then the choice of profiles for the fence is obvious.
If you plan to make a fence from corrugated board, it is necessary to calculate the materials (sheet, supports, fasteners). To simplify the task, a diagram of the future design is drawn up, taking into account the length of the gate (swing, sliding) and wicket.
In the case when it is planned to carry out the work with your own hands, sketches of the fence, calculation of materials, preparation and installation - you will have to take on everything. If you turn to professionals, the total cost will include the design and installation work.
What is taken into account when calculating
The first step is to determine if there is a serious slope in the terrain. In this case, a difference in the height of the installation of the profiled sheet is made. Then more material will be required (some of the supports will be higher).
The calculation is based on the design features: the type of racks / supports, the width between them, the length of the lags used for fixing the profiled sheet, the method of installing the gates (swing, sliding), the foundation and its characteristics, as well as the amount of profiled flooring.
Fence scheme and its calculation example
In a word, in order to calculate the material, you need to take into account the device of the fence made of corrugated board. Plus a small margin is added to that. Fasteners (self-tapping screws), by means of which the profiled sheet is mounted, are taken at the rate of 5-7 pcs / sheet, depending on the number of crossbars. The recommended type of material used is wall (grade C). You can choose the galvanized version of the profiled sheet or with a polymer coating.
The choice of the fence design
Drawings of fences are drawn up on initial stage, which greatly simplifies installation and allows you to build a reliable structure. The location of the profiled sheet relative to the ground can be different: recessed or raised installation. If the strip option of the foundation is chosen, in this case, the gap between the base and the corrugated board also differs.
The type of racks also differs: brick with reinforcement in the form of a round metal pipe; profiled pipes of square (60x60 mm) or rectangular (40x60 mm) configuration. The calculation of the material is also based on how the lags are attached: overlay, end-to-end. The distance between adjacent racks also depends on this.
In the first case, the double width of the profiled sheet is optimal, and it is the useful width that is taken into account. If the frame is mounted end-to-end, the maximum distance between the posts is 3 m. The profiled material can be positioned vertically and horizontally. In addition, the structure of the fence can be solid and with gaps for posts.
Common brands and sizes of profiled sheet
Common dimensions of the profiled sheet: height 2 m, full and useful (working) width depends on which brand of product is chosen. If the fence and assembly work are done by hand, you need to ensure the maximum reliability of the structure.
The most common brands of profiled material in terms of price-quality ratio: С8, С10, С18, С20, С21. The designation encodes the height of the wavy profile of the profiled sheet, respectively, 8, 10, 18, 20, 21 mm. The thickness of the material should not be less than 0.5 mm.
Horizontal fastening of corrugated board with gaps
To calculate the amount of material in this case, you need to take into account that the width of one product during installation is simultaneously the height of the fence. The distance between the posts is decisive. The length of the profiled sheet should be approximately equal to this parameter. When calculating the material, you need to subtract 10-20 mm, which is due to possible unevenness of the racks.
With a horizontal sheet arrangement, continuous mounting can be performed. Then, at the junction of professional products, a small overlap is taken into account, equal to the sum of half the width of one rack and 10-15 mm.
Vertical installation without post clearance
In this case, the fence scheme is a solid canvas without the slightest gaps between the sheets. The racks are hidden behind the corrugated board. To calculate the number of posts, you need to determine the working width of the profiled product. An important nuance - all connections must fall on the racks. This will provide increased structural reliability.
In case of continuous installation, the span between the posts corresponds to the total working width of the sheets; the width of one post must be subtracted from this value. This calculation is made for a fence with two sheets per span.
Fencing scheme for a solid canvas without the slightest gaps
If we consider the situation when three units of profiled products are located between two racks, then the amount of material can be calculated as follows: the useful width of three sheets is summed up, the width of two pillars is subtracted from the obtained value.
Calculation of the total number of sheets for this case: the numerical value of the width of all pillars is subtracted from the perimeter value (their number is multiplied by the width of one rack), then the result is divided by the distance between the supports and multiplied by the number of profiled products in each span. Moreover, a reliable calculation means deducting the width of the gate (swing, sliding) and the wicket, if it is located nearby.
Fence base made of profiled material
Various types of pillar foundations
Therefore, an approximate calculation is made more often. In this case, it is recommended to choose the base of the tape-column type. This solution ensures an even distribution of the load on the fence when the soil heaves.
The main feature of this type of foundation is to determine the depth of the pillars, while the strip base can be buried up to 0.5 m below the soil surface. To calculate the depth of the posts, you need to determine the level of load exerted by the wind and per unit of the post.
This parameter is calculated on the basis of the area of \u200b\u200bthe span corrugated board, the aerodynamic coefficient for vertically located flat surfaces (equal to 1.4), and the rate of wind pressure.
The torque value is also determined. When dividing it by the coefficient of the moment of resistance (equal to 225), you can find out the depth of the foundation under the fence posts.
To determine with your own hands how deep the racks should be laid, it is allowed to use the characteristics of the soil, in particular, the depth of freezing. This value can be different for different regions. When preparing the trench for the foundation, in particular, holes for the posts, the post must not be allowed to go beyond sand pillowlocated under concrete base... This will accelerate metal corrosion processes.
Thus, all calculations (amount of material, foundation) should be performed only after a diagram of the future fence has been drawn up. When calculating the number of profiled sheets, you need to subtract from the perimeter the length of the gate (swing, sliding) and wicket.
All actions can be done by hand, the only difficulty is calculating the foundation of the fence. When the design of the fence is being thought out, it is necessary to protect the lower part of the corrugated board from damage as much as possible under the influence of dust and litter.
The era of sawdust furniture and huge fences made of not planed boards seems to have sunk into oblivion forever. Wooden fences now not relevant and not fashionable. More modern will be those structures that are quickly and easily erected, are relatively inexpensive, and serve for a long time. In this rating, the most popular will be a fence made of profiled sheet. In this article, you will find out the approximate cost of work on the installation of fences from a professional sheet.
What is a profiled sheet fence?
A fence made of profiled sheet is a metal structure (monolithic or with brick posts), which is made of cold-galvanized metal. When choosing, it is important to consider the following factors:
- How much zinc is there in every square meter of metal?
- What polymer coating applied on top of the finished profiled sheet?
All profiled sheets, which are designed to create fences, represent a wave, with a higher or lower height.
Naturally, the thicker the metal of the profiled sheet, the thicker the zinc coating, the stronger the polymer applied to the sheet, the more expensive the entire fence will be. Also, do not forget to take the cost of installing a fence from a profiled sheet, if you are going to order installation from a company. If you want to save money, you can edit.
The total price of the finished fence will also include the following indicators:
- Methods for fixing sheets
- The presence or absence of brick supports
- Foundation depth and number of pits for supports
Well, now about all these components in order.
Quality and cost of a professional sheet for a fence
So, the thicker the sheet, the more expensive the finished fence will cost. A priori, sheets with a ridge height of 8 millimeters are the most inexpensive. The price of 1 square meter of sheet with a metal thickness of 0.2 millimeters, the amount of zinc per 1 m2 is not less than 160 mg - 100–120 rubles. But manufacturers recommend using such sheets for temporary fences, for example, when fencing a construction site.
The most durable corrugated sheet fence should have a ridge height of at least 20 millimeters, the metal thickness of at least 0.3-0.4. The zinc coating should be at the level of 250 mg per 1 m2. The protective polymer layer can be made of acrylic. In this case, each square meter of profiled sheet can cost at least 160 rubles.
Prices are indicated for profiled sheets, the height of which is 2 meters. The remaining components of the cost of a fence from a profiled sheet also largely depend on the quality of the materials used.
Profiled sheet is a popular material for the manufacture of fences. It is produced in different colors and with different sizes... should be 06, -0.7 mm in thickness. Such a profile is rather difficult to deform.
The cost of fasteners for profiled sheets
Those companies that offer the installation of profiled sheet fences usually subdivide their products into at least three types:
- Economical option
- Standard Option
- Elite option
Moreover, it happens that a sheet with the same parameters can be the basis of both an economy fence and a fence of the "standard" class. The difference will only depend on the mountings.
Economy option
Most often, thin profiled sheets with a low zinc content and an inexpensive coating will be fastened using wooden longitudinal logs, which are placed above and below the sheet. The service life of such a structure should not exceed 3 - 5 years. A kind of economy option is possible, when the structure is held on one metal log located in the middle of the sheet.
Option "standard"
Profiled sheets (it can be both thin and better quality sheets) are attached to metal logs. Their size is 40/20. To increase the service life of the metal shaped pipes primed and painted. The cost of such a design is, as a rule, 1.5 times higher than the economy option.
It is important! Rectangular profiles metal pipes allow you to create a fairly rigid structure. For monolithic fences (without brick or any other supports), you need to select logs at least 3 meters long. This will provide a large seating area.
Elite option
The highest quality profiled sheets with a reliable coating are attached to each other with rivets, which are no longer possible to unscrew. This option for mounting the fence is the simplest (does not require welding) and is no less reliable than when using metal to fasten the fence sections. Usually the cost of an elite fence option is 2.5 - 3 times higher than that of an economy option.
Attention! The domestic elite option is to use not rivets (which few consumers consider strong enough), but shaped pipes. Their size is at least 60/60, and even better 80/80 or even 100/100.
The foundation for the fence and its cost
A good fence has as many supports as there are sheets used for it. Supports can be
- Brick
- Metallic
For each brick support, you need a foundation of at least half a meter (preferably 70 cm). The base must be concreted, having previously inserted a metal structure into it, around which a brick support will be laid out. The cost of one support, taking into account the price of brick, cement, metal, as well as masonry work, is, on average, 1,500 rubles.
For metal supports, which can be pipes 20/40, you also need a foundation, its maximum depth is 40 centimeters. Usually the height of each support is multiplied by required amount supports for the entire fence, which allows you to take pipes in running meters... The cost of one PM is about 50 rubles.
How to calculate the cost of a fence from a profiled sheet
Suppose you need a calculation for a fence that is 30 meters long. At least 2 variants of its design are possible.
Option one and its price
Calculation of the cost of a fence made of profiled sheet with internal supports, which will simultaneously become an additional fastener.
So, you need it.
To correctly calculate the fence, you first need to mark the fenced area. For this, each side of the perimeter is measured. Then, adding the length of each side, we get the total length of the entire fence. The number of sheets of corrugated board is calculated by the following formula:
- n is the number;
- L is the total length of the fence;
- b is the width of one sheet.
If the width of the area is 20 m and the length is 40 m, the total length of the fence will be 120 meters. The sheet is 1.4 m wide.
You need to overlap them.
Therefore, discarding 10 cm from each side, we take a width of 1.2 m.Substituting the numbers in the formula, we get:
- 120 / 1.2 \u003d 100 sheets.
That is how much profiled sheet is needed to completely cover the entire perimeter. The height of the sheet is 2 m. The height of the profile itself (ridge) is 0.7 mm. It is best to mount them on a 4 × 6 mm profile pipe, which has a wall thickness of 2 mm. The pipes are installed at a distance of 2 meters from each other. For each of them, a hole is dug 30-40 cm deep. The pipe is inserted into the hole, concrete is poured around it. Its plane, which has 6 mm, should be fixed parallel to the perimeter line. Pipes are used as support pillars. Their height should match the height of the corrugated board.
Installation of a fence from profile sheets
After the support pillars are installed, transverse profile pipes are welded to them. The corrugated board is attached to them with self-tapping screws. Self-tapping screws press the corrugated board. In order for the sheets to hold firmly, it is necessary that one side of them is screwed on with at least three self-tapping screws.
The corrugated board on the fence is made in such a way that from the transverse logs to the edges of the corrugated sheet there is no more than 20 cm. In this case, the sheets will have sufficient rigidity, they will be able to withstand a strong gust of wind. This measurement must be made without fail. If you need to calculate the cost of corrugated board, you need to take into account its coverage. A simple galvanized profiled sheet is the cheapest, with a color polymer coating 40% more expensive.
When installing support pillars and transverse lags, you must use the building level. With the help of a level, all parts should be installed in a strictly vertical and strictly horizontal position. There should not be any inclinations or distortions. This will provide the structure with greater strength and improve its appearance.
To build a fence from corrugated board, you need a tool such as:
- Welding machine.
- Bulgarian.
- Electric drill.
- Building level.
- Shovel.
To provide the tool with electricity to the work site, you need to stretch a 220 V carrier. The fence made of profiled sheet is strong and durable enough. Due to the fact that the galvanized material does not corrode, it can last for more than forty years. The painted boom has a strict and solid appearance.
