1. The deviation of the reserved hole in the door/window in the concrete wall is greater than the specification; the deviation of the reserved hole in the door and window in the masonry is greater than the specification.
2, the line is wrong, the aluminum alloy door installation deviation is obvious, does not meet the requirements of the specification.
3. The reserved hole size of doors and windows is larger than the specification requirements.
The quality of aluminum alloy doors and windows installation (3)
Precautions;
1) Before the on-site installation of aluminum alloy doors and windows, the door and window openings and the base layer should be strictly checked to ensure that the size and position of the hole meet the design requirements, the defects of the base layer are rectified, and the re-inspection is passed to ensure that the design requirements are met;
2) Acceptance records, grassroots acceptance and rectification records of doors and windows openings shall be provided;
3) Before installing the window frame or sub-frame, check the key points:
• The door/window hole size meets the design requirements, and the gap width matches the caulking material and method;
• The base surface treatment meets the design requirements, and there are no defects such as slag inclusion, honeycomb, cracking;
• The embedded part specifications, section, quantity, distribution, etc. meet the design requirements.
4. The size of the reserved holes in the doors and windows is smaller than the standard requirements. The local concrete is cut to the exposed ribs, and the rectification is difficult, and the leakage is hidden.
The quality of aluminum alloy doors and windows installation (3)
Matters needing attention: the construction process should form an inspection mechanism and set checkpoints, such as hole acceptance, basement rectification and correction, joint spacing, caulking frame, waterproof layer setting, etc., and be verified and recorded by dedicated monitoring personnel to prevent errors. And omissions.
5, the convex window slab collapse angle, the corner column is suspended, the hole rectification and acceptance monitoring is not strict, the aluminum window has structural safety and leakage hidden danger; the concrete defect is not repaired before the window, and the leakage is hidden.
Matters needing attention: The acceptance record of the door and window openings, the grassroots acceptance and rectification records should be prepared;
6, the embedded parts are biased, and without correction, the connection method is unreasonable, and there is doubt.
7. The connection screws of the connecting piece and the sub-frame are loose, and the structure is firmly suspected; the base body is cracked by the nail, which is firmly suspected, and the crack of the decorative surface is greatly increased.
Precautions:
1) The door and window installation check points are as follows:
• The sub-frame/window frame verticality, square, elevation, anti-corrosion treatment, etc. meet the design requirements;
• The number and spacing of connections are correct;
• The width, thickness, length and anti-corrosion treatment of the joints meet the requirements of the model and design; the strength of the fixed nail gun should meet the requirements, but the base body should not be damaged;
• The nailing position is reasonable and should be placed in a firm base. Do not hit the part with low rigidity (such as gray seam);
2) Workers should have sufficient handling techniques for the nail gun.
8. The connecting piece is misplaced on the masonry or gray joint; the spacing of the connecting pieces is larger than the design requirement; the nail of the connecting piece is mistakenly hit on the non-concrete block.
Note: The installation process meets the specifications, design and contract requirements. The inspection points are as follows:
1) The rigidity of the base conforms to the design and structural calculation requirements;
2) According to the design and contract requirements, install a waterproof layer on the base surface of the hole (if applicable);
3) Fix the sub-frame or window frame according to the drawings according to the law, the fixing nails/bolts are firm, and the integrity of the base body must not be damaged;
4) Defects such as vertical, square, flat, and no size of the sub-frame or window frame;
5) Do not use the method of first installing and then installing the joint.
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