Traditional Culture Encyclopedia - Photography and portraiture - The purpose of backfilling and backfilling of retaining wall foundation pit is to leave image data.
The purpose of backfilling and backfilling of retaining wall foundation pit is to leave image data.
Before backfilling and during construction, on-site technicians should keep the image data of concealed works, and the concealed works must be accepted.
When the wall concrete reaches more than 70% of the design strength, backfill the back of the retaining wall to ensure the quality of the flaky concrete wall.
Backfill material at the back of the wall adopts permeable filler, which is compacted by layers for 30cm.
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