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11 May 2026
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165 观看21:13Deen360gh原视频发布: 2026-05-11

Building foundations are the most critical structural elements that transfer building loads safely to the ground, ensuring stability, strength, and durability. There are two main types: shallow foundations (spread footings, strip footings, and mat foundations) built near the ground surface within 3 meters depth, used when soil is strong and loads are low; and deep foundations (piles and caissons) that transfer loads to deeper soil layers, essential when surface soil is too weak to support heavy structures.

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