低层住宅建筑物的地基几乎都是由延伸的基脚来支撑，宽广的基座(通常是混凝土)支撑墙壁或墩，分散重量到更大的面积。
The foundations of low-rise residential Buildings are nearly all supported on spread footings, wide Bases (usually of concrete) that support walls or piers and distribute the load over a greater area.
钢结构支撑金属楼梯，混凝土墙和板坯或者基脚。
Metal stairs shall be supported from structural steel framing, concrete walls, and concrete slab or footings.
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