big aluminium windows aluminum double hung windows
⒋The overlap between the sliding door and big aluminium windows aluminum double hung windows sash and the upper and lower frame guide rails should not be less than 10mm, and safety measures such as anti-falling blocks and anti-collision blocks must be installed to prevent the big aluminium windows aluminum double hung windows sash from falling and opening collision and hurting people.⒌The height between the lower frame of the movable fan of the glass window on the exterior wall of the building and the indoor floor should not be less than 900mm. Under special circumstances, other protective safety measures (such as adding protective railings, etc.) should be taken if the diameter is less than 900mm.
⒍The screws and bolts used in the connection and fixing of aluminum alloy doors and windows must be made of high-quality stainless steel products to prevent the screws from loosening due to electrochemical corrosion. Stainless steel screws should be made of machine-made threads as much as possible, and self-tapping screws should be avoided as much as possible. The screw connection is best designed to be sheared.
⒎Doors and big aluminium windows aluminum double hung windows should be reliably connected and fixed with the wall
The main methods of connecting doors and windows to the wall include steel attachment frame connection, dovetail iron foot welding connection, dovetail iron foot connection with embedded parts, fixed steel sheet nailing connection, and fixed steel sheet metal expansion bolt connection. The thickness of the dovetail iron feet should be ≥3mm. The thickness of the fixed steel sheet is ≥1.5mm, and the width is ≥15mm. All dovetail iron feet and fixed steel sheet surfaces should be hot-dipped galvanized. The distance between the fixed points of the doors and big aluminium windows aluminum double hung windows is generally between 300mm and 500mm, and cannot be greater than 500mm.
⑵Dovetail iron foot welding connection method can be adopted for the connection of doors and big aluminium windows aluminum double hung windows and steel structure, and the connection of dovetail iron foot and steel structure can be adjusted by steel bar or steel angle welding.
⑶Dovetail iron feet and embedded parts welding connection method should be adopted for the connection of doors and windows and lightweight walls. The dovetail iron feet and embedded parts should be welded with steel bars or steel angles.
⑷The connection between doors and big aluminium windows aluminum double hung windows and the reinforced concrete wall can be connected by fixed steel sheet (or dovetail iron feet) shot nails or metal expansion bolts. When fixed steel sheets are used to connect and fix doors and windows, the gaps between the borders of the doors and windows and the walls should be plugged with cement mortar. Cement mortar plugging can make the door and window outer frame and the wall firmly and reliably connected, and play an important role in strengthening the frame material of the door and window. When the gap is filled with polyurethane foam caulking agent or other flexible materials, the fixed steel sheet should be replaced with dovetail iron feet to ensure the reliability of the connection between the doors and windows and the wall.
⑸The connection between doors and windows and the brick wall can be connected with fixed steel sheet (or dovetail iron foot) metal expansion bolts. It is strictly prohibited to use nails to fix doors and big aluminium windows aluminum double hung windows on the brick wall. As with reinforced concrete walls, the gaps should be plugged with cement mortar when fixed steel sheets are used, and dovetail iron feet should be used to plug the gaps with polyurethane foam caulking agent or other flexible materials.
Waterproof seal design
⒈Minimum control index for watertight performance of aluminum alloy doors and windows
The lowest watertight performance index of aluminum alloy doors and windows can be taken as follows and not less than 150Pa (that is, the watertight performance of aluminum alloy doors and big aluminium windows aluminum double hung windows cannot be lower than the level 2 index):
Where P: Design value of water tightness (Pa);
wo: basic wind pressure (N/㎡);
μz: wind pressure height change coefficient;
μs: body shape coefficient, which can be 1.2;
k: coefficient, the value of k is 0.3 in coastal tropical storm and typhoon areas, and 0.25 in other places.