The eight-character truth of on-site quality inspection: "look, touch, knock, pat" and "lean, measure, hang and cover"
1, according to the requirements of quality standards to see the appearance inspection, such as whether the clean water wall is clean, whether the density and color of spraying are good and uniform, whether the workers operate normally, whether the bedding face and squabble of interior wall plastering are straight, and whether the concrete appearance meets the requirements;
2, touch is to check the identification by hand, such as the smoothness of the paint, whether the paste is firm, not falling powder, etc.
3. Knocking is to check the sense of sound with a knocking tool. For example, terrazzo, brick and stone facing in ground engineering and decoration engineering should be inspected by tapping.
4, according to the artificial light source or reflected light irradiation, check the difficult to see or dark parts, for example, pipe wells, elevator shafts and other internal pipes, equipment installation quality, decorative ceiling connection and equipment installation quality.
Extended data
Matters needing attention in engineering survey:
1, theodolite alignment should be accurate. If a rectangular control network is laid, it is likely that the periphery will not be closed, which exceeds the allowable error. The centering error should not exceed 2-3mm, and the rear-view edge should be selected on the long side.
2, the instrument should be leveled. When the instrument is abnormal, the telescope scans an inclined plane around the horizontal axis, and the level bubble should be centered when reading. Under strong light, you should hold an umbrella to keep out the sun to prevent foaming instability.
3. The spirit level should be upright to prevent the ruler from inclining and reading too much. Always check and clean the soil at the bottom of the ruler. The leveling rod should stand on a hard point (adding foot pads and nailing piles) as a turning point. The ruler must stand on the same punctuation. The top half of the tower ruler slides down easily. When using, check the position of the clamp spring and whether the reading is continuous and complete to prevent ruler difference.
4, familiar with the law of the leveling staff, reading should be from small to large, numerical increasing direction (no matter up and down, from small to large). If it is a mirror, the reading ruler should read from top to bottom.