Its maximum particle size should not exceed 2/3 or 3/4 of the paving thickness of each layer (when using a vibratory roller), and the water content should meet the requirements.
2.2.2 Before filling, the filling base and completed works shall be inspected and accepted in the intermediate stage.
Become an engineer with strength, temperature, attitude, and depth.
At the same time, a construction plan should be prepared.
For example, nail horizontal stakes every 1m on large foundation pits or ditches or copy standard elevation points on adjacent fixed buildings.
Only by making yourself stronger can you truly hold up a piece of sky.
2.2 Operating conditions: 2.2.1 Before construction, parameters such as the water content control range, virtual paving thickness, and compaction times of the fill soil should be reasonably determined based on the project characteristics, fill soil type, compactness requirements, and construction conditions; The parameters of important backfill earthworks shall be determined through compaction tests.
2.2.3 Before construction, horizontal and elevation marks shall be arranged properly.
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After passing the inspection, concealed work inspection and acceptance procedures shall be completed.
3.
2.1.4 Main machines and tools: 2.1.4.1 Earthmoving machinery for loading and unloading includes: bulldozers, dump trucks, bulldozers, scrapers, and dump trucks.
If necessary, prepare for reinforcement and widening.
Disclosure content: Mechanical backfill 1 Scope This process standard is applicable to backfill of industrial and civil buildings, structures, large area leveling sites, large foundation pits, and pipe trenches.
2.2.4 Determine the traveling route of earth moving machinery and vehicles, which should be inspected in advance.
However, saline soil that does not contain salt crystals, salt lumps, or roots of salt containing plants and meets the requirements of Schedule 1.8 of the Code for Construction and Acceptance of Earthwork and Blasting Engineering can be used.
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2.1.4.3 General machines include frog or diesel rammer, trolley, shovel (flat or pointed), 2m steel ruler, 20 # lead wire, rubber tube, etc.
2.1.2 The water content of cohesive soil should be tested and must reach the design control range before it can be used.
2.1.3 Generally, saline soil cannot be used.
Horizontal piles shall be nailed at regular intervals on a large area of ground or terrace.
Operation process flow:
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2.1.4.2 Rolling machines include: flat roller, sheep foot roller, vibration roller, etc.
Construction Preparation 2.
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l Materials and Main Machines and Tools: 2.1.1 Gravel soil, sandy soil (the use of fine sand and silt should be approved by the design unit), and blasting ballast, which can be used as filler below the surface layer.
