Gable roofs can, perhaps, be attributed to the most popular among private developers. Their rafter system is usually not very complex both in calculations and in practical implementation. But the gable roof itself becomes very reliable, practical, attractive in appearance, and besides, with proper planning, it makes it possible to use the attic space usefully, up to equipping a full-fledged living room there.
One of the key parameters in the calculation of the truss systems themselves and roofing, including the loads that will fall on them during operation, is the slope angle of the slopes. His calculation, in principle, is simple, but the formulas memorized at school tend to be gradually forgotten. To simplify your task, use the calculator for calculating the angle of inclination of a gable roof, offered in this publication. A few necessary explanations will be given below.
The metal tile appeared in a series of roofing materials relatively recently, but rapidly gained popularity. This is explained simply by correct styling such a cover provides reliable protection of the house from atmospheric precipitation, while at the same time giving the roof a reliable imitation of natural classical tiles.
The popularity of this coating is also based on the fact that its installation is not difficult, and the owner of the house must even cope with it on his own, of course, having an assistant, but without resorting to hiring a team. A clear profile of a metal tile allows you to easily combine adjacent sheets, and it is very difficult to make a mistake even if you wish. But all this will be fair only if a high-quality crate is mounted under such a roof. To figure out how many boards or timber will be required to create it, a calculator for calculating lumber for a crate for a metal tile will help.
Below are some comments about working with the program.
Introducing a free calculator for gable roof calculations. Online calculation of the crate, the angle of the rafters and the required amount of materials.
Specify roofing material:
Select a material from the list -- Slate (corrugated asbestos-cement sheets): Medium profile (11 kg/m2) Slate (corrugated asbestos-cement sheets): Reinforced profile (13 kg/m2) Corrugated cellulose-bitumen sheets (6 kg/m2) Bituminous (soft , flexible) tiles (15 kg/m2) Galvanized sheet metal (6.5 kg/m2) Sheet steel (8 kg/m2) Ceramic tiles (50 kg/m2) Cement-sand tiles (70 kg/m2) Metal tiles, corrugated board (5 kg/m2) Keramoplast (5.5 kg/m2) Seam roof (6 kg/m2) Polymer-sand tile (25 kg/m2) Ondulin (Euro slate) (4 kg/m2) Composite tile (7 kg/m2) ) Natural slate (40 kg/m2) Specify the weight of 1 square meter of coating (? kg/m2)
kg/m2
Enter roof parameters:
Base Width A (cm)
Base length D (cm)
Lift height B (cm)
Length of side overhangs C (cm)
Front and rear overhang length E (cm)
Rafter:
Rafter step (cm)
Type of wood for rafters (cm)
Working section of the side rafter (optional) (cm) ">
Lathing calculation:
Purlin board width (cm)
Lathing board thickness (cm)
Distance between decking boards
F(cm)
Snow load calculation:
Select your region using the map below
1 (80/56 kg/m2) 2 (120/84 kg/m2) 3 (180/126 kg/m2) 4 (240/168 kg/m2) 5 (320/224 kg/m2) 6 (400/280 kg/m2) 7 (480/336 kg/m2) 8 (560/392 kg/m2)
Wind load calculation:
Ia I II III IV V VI VII
Height to building ridge
5 m from 5 m to 10 m from 10 m
Terrain type
Open area Closed area Urban areas
Calculation results
Roof pitch: 0 degrees.
The angle of inclination is suitable for this material.
The angle of inclination for this material is desirable to increase!
It is desirable to reduce the angle of inclination for this material!
Roof surface area: 0 m2.
Approximate weight of roofing material: 0 kg.
Number of rolls of insulation material with 10% overlap (1x15 m): 0 rolls.
Rafter:
Load on the truss system: 0 kg/m2.
Rafter Length: 0 cm
Number of rafters: 0 pcs
Lathing:
Number of rows of lathing (for the entire roof): 0 rows.
Uniform distance between the boards of the crate: 0 cm
The number of boards of the crate with a standard length of 6 meters: 0 pcs
Volume of boards of an obreshetka: 0 m 3 .
Approximate weight of the boards of the crate: 0 kg.
More information about the calculator
The online gable (gable) roof calculator will help you calculate the angle of the slope, the size and number of rafters, the number of sheathing, as well as the amount of materials needed online. Such common roofing materials as metal tiles, slate, ondulin, tiles made of ceramics, bitumen, cement and other materials are pre-made in the calculation base.
Note! Calculations are made on the basis of SNiP "Loads and Impacts" and TCP 45-5.05-146-2009, taking into account the standards contained in these documents.
Gable roof (there are also spellings "gable roof", "gable roof") - a variant of the roof with two slopes going from the ridge to the outer walls of the building. Today it is the most common type of roofs, due to the ease of execution, low cost and attractive appearance.
The rafters in the construction of such a roof in pairs lean against each other and are connected by a crate. The end sides of a structure with such a roof are triangular in shape and are called pediments (sometimes tongs). Usually under gable roof and an attic is arranged, and small attic windows are made on the gables for lighting.
When filling out the fields of the calculator, pay attention to the icon "Additional Information", under which explanations are hidden for each item.
The calculation results are also accompanied by explanations, which you can find below.
Explanations for the calculation results
Roof slope
This is the name of the angle at which the slope and rafters are inclined to the plane of the ceiling. The calculations are made taking into account the fact that it is planned to build a symmetrical gable roof. By entering an angle, you can not only calculate right amount materials for a given angle, but also to check if it is possible to build a roof at this angle from the materials you have chosen. You can reduce or increase the angle by changing the width of the base or the height of the lift: these parameters are tightly interconnected.
Roof surface area
The total area of the roof slopes, including the area of overhangs of a given length. Determines the amount of roofing and subroofing material required in the construction of the roof.
Approximate weight of roofing material
The estimated total weight of the roofing material.
Number of rolls of insulating material
The required amount of roofing material, taking into account the required overlap of 10%. In calculations, we proceed from rolls 15 meters long and 1 meter wide.
Load on the truss system
The maximum possible load, taking into account wind and snow loads, attributable to the rafters.
Rafter length
Rafters are measured from the base of the slope to the ridge of the roof.
Number of rafters
The total number of rafters required for truss system roofs at a given pitch.
Minimum section of rafters
To provide the roof with sufficient strength, it is necessary to choose rafters with the section options proposed here.
Number of rows of battens
With the parameters you set, this number of rows of crates will be required. If you need to determine the number of rows for one slope, then this value must be divided by 2.
Uniform spacing between boards
To eliminate the overspending of materials and save yourself from unnecessary trimming work, you need to choose a given distance between the boards of the crate.
The volume of boards of the crate
The number of boards required for the sheathing of the entire roof (in cubic meters).
Before starting the calculations, you need to understand that the roof and the roof are not identical concepts. By “roof”, we mean the entire system that stands on the Mauerlat: rafters, lathing and counter-lattice, all kinds of insulation and, finally, roofing material, that is, the “roof” itself. The online roof calculator with drawings allows you to get data for both the roof and the roof - in a format convenient for you.
The finished calculation of the truss system and metal tiles on the roof (as well as other types of roofing) can be saved both in the form of simple numbers by the number of building materials, and in the form of drawings and 3D models. You can save the result on the PC or mobile device from which you entered the data, as well as send it by e-mail to yourself or to the specialist who designed your facility. By the way, before purchasing it is recommended to consult with him or with a professional estimator: online calculator for calculating the roof with roof drawings is designed for standard initial data - your object may have features that the service does not take into account.
Using the service, you can make calculations:
- single-pitched, gable, four-pitched, including hip roofs;
- any of the listed types of roofs, taking into account the attic;
- any of the listed types of roofs, given the different angle of inclination;
- roof area.
All data is entered in centimeters - for example, the length of the roof along the ridge, which will be 12 meters, must be indicated as 12,000 centimeters; The service also gives results in centimeters.
If necessary, under the main data, you can check the boxes for accounting additional materials: mauerlat, counter-lattices, waterproofing and insulation. The service takes into account the most used types and brands of materials.
All parameters must be specified in millimeters
B- The length of the roof.
Y- Height.
C- Overhang distance.
X- Roof width.
Y2- Additional height.
X2- Additional width.
This program will help you perform an accurate calculation of building materials for the construction of a roof: the number of rafters and sheathing boards, roofing material (roofing material, glassine), the amount sheet material(metal tile, slate, nulin or ondulin).
Our online calculator will calculate other useful roof sizes.
The presented program performs the calculation in two versions: type 1 - simple gable roofs, type 2 - gable roofs with 2 side gables.
If the projected roof has only one side gable, then in this case we perform the calculation by type - 1, and then by type - 2. Based on the results of the calculations, you can determine the required amount of materials: roofing, sheet, rafters and sheathing board.
Otherwise, you will make an error in the calculation, since the program takes into account the cutouts for the side fronts when calculating the parameters of the main roof.
Based on the results of the calculation, you get the volume and size of the material for one roof slope, and the entire volume and size will be indicated in brackets.
When calculating the volume and useful dimensions additional roof, You get two parameters in brackets: the volume and the size of one or two additional roofs.
Important! It is worth considering that the program performs a calculation over the entire area of the roof, when determining the number of sheets of roofing material.
For example, a row takes 7.7 sheets, and only 2.8 rows. Based on the results of the calculation, you will receive 3 real building rows.
In the event that you want to get the exact number of sheets for the future roofing, you need to reduce their height until you get an integer number of rows.
Do not forget to set the exact length of the overlap.
Important! In type 2 mode, when calculating the amount of material for the main roof rafters, the program does not take into account cutouts for side gables. This calculation of the gable roof truss system is associated with the design of the program itself.
Also, the remaining building material for the rafters, you can use to build or repair a house, otherwise you can make corrections to the calculations.
Accurate calculation approximate cost roof depends on the correct basic measurements.
Important! Do not forget to purchase building materials with a margin of 5-10% for waste.
Do-it-yourself gable roof
First of all, we need a diagram (drawing or design) of a gable roof, according to which we will perform all calculations (listed above).
The procedure for erecting a roof is quite simple, but the sequence of certain steps must be followed.
Before you install beams or transfers for future flooring, you need to determine whether an attic or just an attic space will be equipped. As a rule, for a simple attic, it is enough to choose a board 150x150 mm. In the event that you plan to build an attic, then it is best to choose a bar with the same size. To increase the strength of the frame, you should mount the bars or boards exclusively on the walls.
The process of fixing the beams is carried out taking into account the release from the outer edge by about 400 mm in order to prevent precipitation or wind from entering under the roof.
We will use a board edged under 50X150 mm when arranging the attic frame, and fixing is carried out with roofing nails. To give the gable roof stability, it is necessary to perform all measurements correctly, trying to eliminate the error.
Now let's move on to assembly. roof structure, starting the installation from the gables, using the method already described above. At the same time, we saw off the lower parts of the boards, which will give our rafter structure additional stability.
When the structure is fully erected for a gable roof, we begin to cover with roofing materials.
Advantages of a gable roof:
- This design is quite simple to build, which allows you to perform all the work yourself without the expensive help of specialists;
- The building materials used are affordable;
- The large angle of inclination of the roof perfectly removes water during precipitation;
- Absence complex structures and kinks, greatly facilitate the construction and cladding of the roof.
