What does a webmaster need to learn?

According to GB50202-2002 Code for Acceptance of Construction Quality of Building Foundation Engineering, on-site librarians should learn specifically:

1, lime-soil foundation, sand-gravel foundation, geosynthetics foundation, fly ash foundation, dynamic compaction foundation, grouting foundation and preloading foundation, the strength or bearing capacity of the foundation shall be tested, and each unit project shall have no less than 3 points, and the project exceeding 13000m2 shall have at least 1.

2. Test the bearing capacity of cement-soil mixing pile composite foundation, high-pressure jet grouting pile composite foundation, sand pile composite foundation, vibroflotation pile composite foundation, soil and lime-soil compaction pile composite foundation, cement fly ash gravel pile composite foundation and rammed cement-soil pile composite foundation, the number is 0.5%~ 1% of the total, not less than three, and the number of single pile strength tests is 0.5%~65438+ of the total.

3. The lime-soil foundation has a mixture ratio, and the compaction coefficient of layered backfill is detected.

4. The mixture ratio and compaction coefficient of layered backfill should be tested for sand and gravel cushion.

5, lime test report, lime particle size, coating organic matter content test.

6, sand cushion, sand and gravel have a second interview report, sand and gravel have organic matter content, silt content, particle size and other tests, cement-soil mixing pile bearing 90d specimens.

7, fly ash foundation, fly ash has a retest report, fly ash has particle size, alumina and silica content, burning vector and other tests.

8. Every 50 cubic meters of cast-in-place piles must have 1 test pieces, and every less than 50 cubic meters of cast-in-place piles must have 1 test pieces.

9. A set of test pieces (3 pieces) shall be made for each 100kg of semi-finished products of sulfur cement for static pressure piles.

10, and the finished pile has the product certificate.

1 1, the backfill has a mixture ratio, the compaction coefficient of layered backfill is detected, and the filling thickness is 200 ~ 250 mm with a diesel compactor. The thickness of backfill soil in winter should be reduced by 20%~50% compared with normal temperature.

12, each layer of backfill soil shall be concealed, and the inspection lot shall be divided according to each layer for acceptance.

GB50203-2002 Code for Quality Acceptance of Masonry Engineering

1, cement stability and strength re-inspection. Provisions of cement inspection lot: determined according to the annual production capacity of cement plant.

L ≥1.2000 t, with no more than 1.200 t as a number;

L600,000 ~1.20,000 t, with no more than1.20,000 t as a number;

L 300,000 ~ 600,000 t, and no more than 600t is a number;

L65438+100,000 ~ 300,000 t, and no more than 400t is a number;

L65438+100000 t, with no more than 200t as a number;

2, M5 above mixed mortar, sand silt content should not exceed 5%.

3, mortar mixed with organic plasticizer should have masonry type inspection report. (Plasticizer: such as micro foaming agent made of rosin, alkali and water and its lubricating effect)

4, mortar test block is not more than 250 m3 of various types and strength grade of masonry mortar, each mixer sampling at least once; Randomly select mortar test blocks at the mouth of mortar mixer (only one set of test blocks will be made for the same plate of mortar).

5. The product age of autoclaved (curing) brick should not be less than 28d.

6. Brick sampling: sintered brick150,000, perforated brick 50,000, lime-sand brick and fly ash brick 100, strength test for sintered hollow brick in batches of 30,000, and autoclaved aerated concrete blocks of the same variety, specification and grade in batches of 65,438,000 with the same density.

7. The age of products used in small concrete hollow blocks shall not be less than 28d.

8, the same origin of stone should be at least a group of sampling.

9, with lightweight aggregate concrete small hollow block or autoclaved aerated concrete block masonry, the bottom of the wall should build by laying bricks or stones sintered ordinary brick or perforated brick, or ordinary concrete small hollow block, or ordinary concrete small hollow block, or cast-in-place concrete pier, height not less than 200 mm. ..

10, the mortar joint of hollow brick and lightweight aggregate concrete small hollow masonry should be 8 ~12 mm. The horizontal mortar joint thickness and vertical mortar joint width of autoclaved aerated concrete masonry should be 1.5mm and 20mm respectively. Spot check 10%, and not less than 3.

1 1, infilled wall, beam and slab bottom shall be laid at least 7 days after the infilled wall is laid.

12, mortar test blocks for winter construction shall be retained. In addition to the requirements specified in normal temperature, not less than 1 group of test blocks cured under the same conditions as masonry shall be added, and the strength after 28 days shall be tested.

13. When the salt-mixed mortar method is used for construction, the strength grade of mortar should be increased by one grade according to the strength grade of normal temperature construction.

Generally speaking, librarians will do on-site testing, sampling and sending part-time. So how to do this experiment? Is to contact the material testing department to do a good job of sending raw materials and various specimens for inspection. Retrieve the test report in time, and immediately notify the technical director or relevant management personnel of the unqualified report. See if it is re-inspection or exit processing.

In the process of construction, the documenter should also collect all kinds of information related to the project construction from the enterprise and relevant government departments in time, and inform the project (deputy) manager or relevant personnel. Do data collection and communication well. In some projects, it is necessary to keep the image data during inspection, so the librarians are also responsible for shooting, collecting and sorting the image data during construction. After the completion of the division project, the documenter will participate in the inspection lot, division project and concealed engineering acceptance; Assist in sorting out the construction technical data.

Ministry of Housing and Urban-Rural Development of the People's Republic of China on Issuing National Standards

Announcement of "Acceptance Standard for Construction Quality of Building Foundation Engineering"