The upper transverse ties
Posted: Mon Feb 10, 2025 5:10 am
Door frames are assembled from jambs (pos. 9) and lintels (pos. 11), using 100x60 mm timber. The parts are assembled in a tenon-groove. To do this, a groove is made in the door frame timber for the middle third, and a corresponding tenon is made in the lintel. The parts are connected with wood glue. The frame can also be connected using external corners, the main thing is not to use internal ones, so that they do not interfere with the tight fit of the doors. The frames are placed in the center of the end walls and secured with a notch or corners.
Installation of the upper cross-bar and end braces
(pos. 13) made of 100x60 mm timber are used to iran mobile database the side walls and door frames on both sides of the greenhouse. The timber is fastened to the upper longitudinal tie using half-lap joints. To the frame – with nails and additionally with corners and self-tapping screws on the outside of the frame. To provide stability, end braces are installed similarly to the side ones.
Assembly of the ridge beam-truss
The ridge beam-truss (pos. 7) is assembled according to the diagram given in the drawing, from a board 25 mm thick. The braces and posts are fastened with corners and self-tapping screws. The assembled structure is installed along the longitudinal axis of the greenhouse on the lintels, aligning it strictly in the center. It is fixed on construction corners on each side. The beam-truss increases the strength of the rafter system, but at the same time does not take away useful height from the greenhouse.
Installation of rafters
Rafter legs (pos. 8) are made from 100x30 mm boards and are laid according to the diagram on the ridge beam-truss and the upper longitudinal strapping. In the upper part of the rafter legs, notches are made, allowing them to be firmly laid on the ridge truss board, then the place of the rafter legs joint is marked and the excess part of the board is sawed off. They are connected using metal plates and self-tapping screws. In the place where the rafters adjoin the upper strapping, notches are also made in them, the rafter legs are installed in place and fixed to special corners. The outer rafters are additionally pulled together with crossbars (pos. 10) from a 50x50 mm bar.
Installation of doors
Installation of the upper cross-bar and end braces
(pos. 13) made of 100x60 mm timber are used to iran mobile database the side walls and door frames on both sides of the greenhouse. The timber is fastened to the upper longitudinal tie using half-lap joints. To the frame – with nails and additionally with corners and self-tapping screws on the outside of the frame. To provide stability, end braces are installed similarly to the side ones.
Assembly of the ridge beam-truss
The ridge beam-truss (pos. 7) is assembled according to the diagram given in the drawing, from a board 25 mm thick. The braces and posts are fastened with corners and self-tapping screws. The assembled structure is installed along the longitudinal axis of the greenhouse on the lintels, aligning it strictly in the center. It is fixed on construction corners on each side. The beam-truss increases the strength of the rafter system, but at the same time does not take away useful height from the greenhouse.
Installation of rafters
Rafter legs (pos. 8) are made from 100x30 mm boards and are laid according to the diagram on the ridge beam-truss and the upper longitudinal strapping. In the upper part of the rafter legs, notches are made, allowing them to be firmly laid on the ridge truss board, then the place of the rafter legs joint is marked and the excess part of the board is sawed off. They are connected using metal plates and self-tapping screws. In the place where the rafters adjoin the upper strapping, notches are also made in them, the rafter legs are installed in place and fixed to special corners. The outer rafters are additionally pulled together with crossbars (pos. 10) from a 50x50 mm bar.
Installation of doors