Sand and gravel: 400m3 or 600t of the same origin and specification shall be taken as the acceptance batch, and less than 400m3 or 600t shall also be taken as a batch
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When there is doubt about the quality of cement in use or ordinary portland cement leaves the factory for more than three months, it must be re sampled
.
Cushion (formwork installation, opening identification Concrete construction, mix proportion, raw materials and formwork removal) 6
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Foundation treatment inspection lot record 5
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Test data soil: it is divided into original soil test and soil compaction test
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Foundation beam (construction measurement and setting out, reinforcement processing, reinforcement installation, formwork installation, opening appraisal, concrete construction, mix proportion, raw materials and formwork removal) 7
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It is recommended to pay attention to mobilization preparation
.
2
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20 bags of cement shall be sampled at different points of bagged cement, each bag shall not be less than 0.5kg, and the cumulative sampling shall not be less than 12kg; For bulk cement, one vehicle shall be taken as a sampling point, the sampling at each point shall not be less than 1kg, and the cumulative sampling shall not be less than 12kg
.
Ordinary masonry, hollow brick and aerated block: the same factory of sintered ordinary brick and 35000 ~ 150000 pieces of the same specification are one batch, If it is less than 35000 pieces, 12 pieces shall be selected from each batch of samples passing the appearance quality and dimensional deviation inspection by random sampling method For hollow bricks of the same manufacturer, 35000 ~ 150000 pieces of the same specification shall be regarded as a batch, and less than 35000 pieces shall also be regarded as a batch 50000 perforated bricks from the same manufacturer are a batch For each manufacturer of small concrete hollow blocks, at least one group shall be sampled for every 10000 blocks, and not more than two groups shall be used for the foundation and bottom layer of buildings above multi-storey Mix proportion: concrete mix proportion shall be made according to different cement varieties, different cement delivery dates, mortar, concrete characteristics, strength grade and different building parts
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Commencement site acceptance
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For fly ash, 200t fly ash continuously supplied at the same grade shall be taken as a batch, and 8kg steel shall be sampled each time: hot binding rib of reinforced concrete, smooth round reinforcement of the same brand and no more than 60t of the same specification shall be taken as a batch
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When sampling on the pile, the sampling parts shall be evenly distributed
Temporary facilities (scheme), safe and civilized construction preparation
.
First floor column (Construction measurement and setting out, reinforcement processing, reinforcement installation, formwork installation Opening appraisal, concrete construction, mix proportion, raw materials and formwork removal) 9
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Beam slab stairs on the first floor (construction measurement and setting out, reinforcement processing, reinforcement installation, formwork installation, opening appraisal, concrete construction, mix proportion, raw materials and formwork removal) 10
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Construction organization design, construction scheme and approval of construction inspection lot sequence 1
.
Qualification contract of subcontractors 4
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Foundation trench inspection record 4
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Stretching: two 40cm bending: two 15cm5d (D is the diameter of reinforcement) Carbon structural steel and low-alloy high-strength steel of steel structure with the same brand, grade, variety, size and delivery status of no more than 60t are one batch Cold rolled ribbed bars with the same brand, specification, shape, production process and delivery status of no more than 60t are one batch, with 2 bending tests for each batch and 1 Tensile test for each batch 300 joints of the same brand and diameter completed by the same welder in the same shift of reinforcement flash butt welding are a batch of stretching: three 40cm bending: three 15cm5d joints sampling: if the welding quantity in the same shift is small, it shall be accumulated within one week
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Then, for sand, approximately 8 equal parts are taken from each part to form a group of samples
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Concrete mix proportion design and material submission for inspection
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Stretching: three 40cm joints in the house structure shall be regarded as a batch according to no more than 300 joints of the same brand in the second floor, and less than 300 joints shall still be regarded as a batch of reinforcement electroslag pressure welding: in the house structure, no more than 300 joints of the same brand in the second floor shall be regarded as a batch, and less than 300 joints shall still be regarded as a batch Mechanical connection of reinforcement: no more than 500 joints of the same construction condition, the same batch of materials, the same grade, the same type and the same specification are one batch (it is still one batch when there are less than 500 joints on the same floor installed on site)
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Remove the surface layer of the sampling part before sampling
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Post cast strip (formwork installation, opening appraisal, concrete construction, mix proportion and raw materials (formwork removal) laboratory data 1
.
For stones, approximately 15 equal parts are taken from each part (five different parts are evenly distributed at the top, middle and bottom of the pile) to form a group of samples.
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Two steel bars shall be selected from each batch of materials
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Project commencement report, construction permit, construction organization design, materials and equipment submission for approval
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Ring knife sampling shall be used for backfilling the column foundation in the lower half of each layer after compaction: 10% of the total number of column foundations shall be sampled, but not less than 5 Foundation trenches and pipe trench backfilling: each layer shall be sampled according to the length of 20 ~ 50m, but not less than 1 group (3) Site leveling and filling: one group shall be sampled for each layer with a length of 400 ~ 900m2, but not less than one group (3) Foundation pit and indoor backfilling: sample one group according to 100 ~ 500m2, but not less than one group (3) The soil quality shall be sampled according to the type of soil sample, and 20kg shall be taken for each kind of soil sample
.
Engineering survey and positioning record 2
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Cement and fly ash: Cement with the same manufacturer, grade, variety and batch number and continuously entering the site shall be one batch with no more than 200t in bags and one batch with no more than 500t in bulk, and each batch shall be sampled at least once
.
Geological survey documents 6
.
4、 What should be prepared for engineering surveying and positioning records: basic information table of construction project, construction approval materials (vertical approval required from the owner), construction project planning license (planning license required from the owner), notification of award of construction project (notification of award required from the owner), construction contract (construction contract required from the owner) supervision contract (supervision contract) Supervision contract required by the management unit) copies of construction unit qualification, personnel certificate, project supervision organization and relevant certificates, copies of design unit qualification, personnel certificate, survey unit qualification, personnel certificate, copies of project construction organization and relevant certificates (including qualification certificate, personnel employment certificate (constructor, budgeter, quality inspector, safety officer, materialman Labor protection personnel, surveyors, samplers, documenters, drainage, heating, electrical engineers and project managers) drawing joint review records and design change documents, design documents and design change before commencement, construction site quality management inspection records and attached table 1, quality responsibility system overview Table 2, operation certificates of main professional types of work (tower crane, scaffolder, gantry, electric welder, butt welder Straight rib and electroslag welder) 3
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Cement: 1 package Stone: 150kg sand: 60kg mortar mix proportion Cement: 20kg sand: 40kg remarks: when the constituent materials of concrete and mortar are changed, the mix proportion shall be determined again
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If the accumulated number is still less than 300, it shall be treated as a batch of reinforcement arc welding: reinforcement of the same brand shall be used in cast-in-situ concrete structure No more than 300 joints of the same joint type shall be regarded as a batch
.
1
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Earthwork excavation inspection lot 3
.
3
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▼ pay attention to construction management and obtain the latest national construction policies
.
Review of construction drawings (qualification certificate of construction drawing review) 5
. 
Foundation backfill (earthwork backfill inspection batch) 8
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Source: engineering platform
.
