This is a massive beam that will serve as a support.

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For safety, the structure should be covered with beams. They are laid on the wall. To extend their service life, roofing felt is glued to the wall. It will protect the beams from moisture and decay. The floor sticks should be arranged in the same way as the rafters. The fastening step is 500–800 mm.
The mauerlat is placed on top of the beams. It is placed on the rear lower wall of the building.
To move safely on the roof, a wooden plank flooring is ghana mobile database on the beams. It is temporary.
Now you need to build the gable wall. It is made of the same material as the building itself. You can use a lighter material. For example, if the walls are brick, the gable is raised using bars or boards.
The floor beams must be covered with waterproofing and embedded in the wall. The pediment rises to the selected height, according to the drawings.
On the finished pediment, you can fix the mauerlat. It turns out that two mauerlats are parallel to each other.
The lower wall is marked for fastening the rafter legs. The fastening elements themselves are fixed.
To firmly fix the rafter, based on the drawings, grooves are cut on it. This is a good option for fastening. The grooves are in two places, at the top and bottom, to enter the wall plate. There are other methods for fixing the rafter leg, as shown in this photo.
After that, the legs are fixed with special corners and fasteners. At the top of the pediment, the legs are screwed tightly. But the lower part is made depending on the selected rafter system of the single-pitched roof. It can be rigidly fixed or made sliding.
There is a certain sequence of cutting in rafter legs. First, the outer elements of the rafter system are mounted. A cord is stretched between them, which serves as a reference point and level for subsequent rafters. Do not forget that the rafter pitch corresponds to the pitch of the floor beams.
The rafters that are already installed are connected to the floor beams using posts, braces and other elements to give them stability. We talked about them above. Fixation is performed with metal corners and brackets. Advice! If you need to extend the rafters and extend them beyond the wall, then "fillies" are attached to the beams. This way, you can protect the adjacent part of the structure from precipitation.
When the structure of the pitched roof is ready, you can begin to insulate and create the roofing cake.