Drill shaft testing : 無料・フリー素材/写真
Drill shaft testing / OregonDOT
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Drilled shaft testing is far from being the only activity on the site. For example, a crew from subcontractor Malcolm Drilling Co. works on a tip-grouting procedure that strengthens the drilled shafts at their base. Project inspector Brandon Thompson (left) checks gauge readings. |
| 撮影日 | 2011-09-22 12:42:11 |
| 撮影者 | OregonDOT |
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