Calculation of rafters for a shed roof — Construction calculators online

Calculation of rafters for a shed roof

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Calculation results

  • Angle: 20.3 °
  • Angle a saw cut: 69.7 °
  • Размер спила: 5.6 mm
  • Length: 432.1 mm
  • Width: 15 mm
  • Thick: 5 mm
  • Length of roof: 426.6 mm
  • Distance from the edge of the visor to the upper gash: 85.3 mm
  • Distance from edge of overhang to the lower gash: 53.3 mm
  • Distance between supports: 287.9 mm
  • depth of the bottom washed down the pole (horizontally): 5 mm
  • depth of the bottom washed down along the wall (vertically): 1.9 mm
  • depth of the top has washed down the pole (horizontally): 5 mm
  • depth of the top gash along the wall (vertically): 1.9 mm

Materials of construction

  • Width: 15 mm
  • Length: 432.1 mm
  • Thick: 5 mm
  • Объём: 0.032 m3

Specified dimensions

  • Units: 1 mm
  • Color drawing: 1 mm
  • Width: 300 mm
  • wall Thickness: 30 mm
  • wall Height (high): 400 mm
  • the height of the wall (low): 300 mm
  • Overhang: 50 mm
  • Visor: 50 mm
  • Width: 15 mm
  • Thick: 5 mm
  • Washed down the bottom: 5 mm
  • Washed down from above: 5 mm
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The calculator provides online calculation of the rafters for shed roof according to your original dimensions.

The program will calculate the parameters and the length of the rafters of a shed roof (length of the rafters, length overhang, the angle of the saw cut, the distance to drinking).

Vizualizacija 3 D, as well as drawings and design data for all the rafters are generated in real-time.


Calculator rafters of the roof with one slope, and it generates drawings and 3D model will help you in the drafting of the shed roof with his hands.

Just make all the original data, click "Calculate" and a few seconds will receive a calculation of the main parameters of rafters, rafter simulated surround the foot, detailed drawings printed on them size for easy future procurement of the rafters.

Calculation of roof system shed roof online calculator forms on the basis of applicable building codes and requirements.

Read more about shed roof and its construction, see the article How to make a shed roof. Describe what determines the angle of how to define it, and give the main idea of the construction shed roof.

Is very important to mark washed down on the rafter foot, for this final data, we present the calculated angle of the gash, which should mark washed down from the rafters, and which should be make the cut.

We also recommend you to carefully make one rafter foot, and then to use it as a template for harvesting the remaining rafters.

As a standard thickness and width of rafters decided to use a Board with an appropriate cross section of 50 mm * 150 mm. However, we should not forget that the thickness of the material for the manufacture of roof trusses is dependent on loads - as weather and load most of the roofing system, wide span, roof slope and other factors. Therefore, pre-read the articles on our website about the structure of the roof system shed roof, as well as on the correct calculation of the rafter system. Article will help you to correctly determine the source data for the calculations.

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