Profiled sheeting for roof Source centr-krovlya.ru

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The minimum slope of a single-pitched roof made of corrugated sheeting for a canopy is 8°; this value also applies to industrial and commercial buildings.

The dependence of the angle on the value of the vertical overlap and the distance between the lathing boards
When designing a roof and calculating the required materials, it is important to understand that the smaller the slope angle, the greater the excess material consumption. If the slope of a roof made of corrugated sheets is no more than 12°, it is necessary to leave at least 20 cm of the profile for vertical and horizontal overlap. In this case, it is necessary to use a sealant to seal the joints between the sheets of corrugated sheets, both with horizontal sheets and with vertical ones. With an increase in the angle, more than 12°, the sealant is not required, and the distance required for the overlap is reduced.

The maximum distance between the lathing boards increases with increasing angle. Since rainwater and, especially, snow, do not linger on roofs with steep slopes (with an angle of more than 30 degrees), the installation of strong lathing is not required.

Solid and sparse sheathing Source legkovmeste.ru

The thickness of the profile pattern of the corrugated sheet plays an important role in calculating the costs of roofing. Sheets with the
Profile pattern thickness* – this size is indicated in the name of the profiled sheet, for example, C-8, MP-20, NS-35, etc.

Different types of corrugated sheets bangladesh mobile database otdelka-expert.ru

Calculation of the permissible slope of a roof made of corrugated sheets
To calculate the permissible slope, you need to know the following components.

The load-bearing capacity of the selected brand of corrugated sheet.

Weight of the roofing cake (insulation, sheathing, rafters).

Wind and snow load.

To calculate the permissible slope of the corrugated sheet to the horizontal, it is necessary to know its bearing capacity. Examples of the bearing capacity for several grades of corrugated sheet according to the second support scheme are given below: