1. No scaffolding shall be placed on the door and window frames, heavy objects may be hung or lifted in the frame or inside the fan to prevent the doors and windows from being deformed or damaged.
2. Non-metallic soft material liners are applied on the surface of doors and windows during lifting, and a reliable and steady stress point is selected to avoid scratches on the surfaces of doors and windows.
3, installation of doors and windows must be used to reserve the method of the hole, is strictly prohibited by the edge of the installation of the edge of the installation or after the first method of installation after the masonry, must be installed in the interior and exterior decoration before the opening.
4. When the doors and windows are fixed in the concrete wall openings, they should be fixed with φ4 nails or plastic expansion bolts. The hole in the brick wall should be fixed with plastic expansion bolts, and should not be fixed at the brick joints. It is forbidden to fix them with shot screws. For hollow bricks, aerated dicing blocks should be embedded in wooden bricks, iron plates, and concrete blocks. The fixed spacing shall not be greater than 600mm and the end spacing shall not be greater than 180mm.
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