Here is an example of how the dimensions of the components are calculated. This should be done before or during the time when the hinged roof truss system is planned. The roof scheme is just an example, only an individually created project is suitable for each house.

- The measuring rod measures the horizontal distance of the ramp intermediate rafter. According to the table of calculations for roofs, we choose the optimal angle of inclination and see the result of the product of the obtained data.
- We measure the length of the rafter from the ridge to the place of attachment, given the protrusion.
- The length of the overhang is determined by the sum of the correction factor plus the horizontal projection.

The correct angles of the rafters for attachment to the ridge are also calculated in a mathematical way, the tight fit of the angle to the ridge board is a guarantee of a sturdy construction. (more…)