A door frame is a frame consisting of bars with folds. How to make a box in a nutshell is not easy to describe. And its installation is no less difficult.
The door frame is fixed using expansion bolt shields or steel plates. To avoid distortions when installing the door frame, you must use a plumb line or level. If the walls of the building are stone, then the boxes are fixed to wooden corks using nails. If the walls of the building are made of plates, then the boxes are fixed with brackets.
How to make a door frame? For this, boards up to 60 mm thick are used. Depending on the thickness of the walls, the width of the board is chosen. The width of the box for one door should not exceed 1 meter. If you decide to install double doors, then the width can go up to 3 meters.
If you make a box with a threshold, then you need four wooden bars. The vertical beam is called a slope, and horizontal - a support. The upper horizontal beam is considered to be a door jumper. Slopes should overlap horizontally by about 10 cm. This ledge is cut off at 45 degrees and is called the tip. How to make a box? First of all, it is a very technological process.
The choice of material, its further drying and processing - all these are links of one technological chain. The bars are carefully processed, then, depending on the thickness of the canvas, its dimensions are selected.
1. Assembly of the box.
Before installation, the upper and side harnesses are collected, after which you need to start installing the box in the doorway. Place all three parts of the assembled door frame on the floor. Using 75 mm nails, nail the connected upper and right side trim with a pre-installed door stop. As a rule, there should be a gap of at least 2 cm between the box and the wall. It will subsequently serve for thermal insulation. Due to the existing clearance, the installation process of the box will be less difficult, because the horizontal and vertical surfaces will be installed correctly. In the same way, install the top and left harnesses. Nail the bar between the parallel slopes of 50 x 25 mm so that they remain parallel during the installation of the doors. And the question of how to make a box becomes irrelevant.
2. Installation.
Install the box in the doorway and carefully position it in the center. Then you need to check the levels of perpendicularity and verticality of the installed elements. Using the level, plumb line and square, also check the level of the upper harness. If necessary, install a seal. To properly fix the box, you need to put any seal under it in places where it touches the wall. Then you need to re-check the perpendicularity of the side elements. If the wall is stone, then fasten the box to the reinforcing bars with 65 mm hatless nails. Then remove the nailed bar and re-check the level of the upper trim. Correct if necessary. Thus, we were able to answer the question of how to make a box in full.