Earthwork opening is an organic component in foundation pit construction and attention must be paid to the crustal stress release in treating the packed soil piles.

土方开挖是基坑工程的有机组成部分，对挤土桩，须重视地应力释放问题。

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In June last year, the yard was ready to be seeded with grasses and wildflowers selected by the company's meadow specialist, Ed Yates, to work well with the region's hard-packed soil and dry conditions.

WSJ: Meadows Instead of Lawns Are in Fashion in Residential Landscaping

The region's hard-packed clay soil welcomes a unique mix of plants with deep-penetrating root systems.

WSJ: Meadows Instead of Lawns Are in Fashion in Residential Landscaping

The archaeologists may turn up other unexpected finds as they dig back through soil packed down over centuries.

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