WebThe particular shoring requirements varies with soil composition and trench size. Generally with stable soils, state or federal regulations require trenches having a depth greater than approximately four to five feet be vertically shored to avoid exposing workers to the hazards of unshored trenches. Web1. 支え を 供給する 構造 に対して 立て掛け られた 梁 または 材木. ( a beam or timber that is propped against a structure to provide support) 2. 水際 に 沿った 陸地. ( the land along the edge of a body of water) 「shore」に関する類語一覧. 出典元 索引 用語索引 ランキング.

USAR Trench Res

WebEmployees were laying sewer pipe in a trench 15 feet deep. The sides of the trench, 4 feet wide at the bottom and 15 feet wide at the top, were not shored or protected to prevent a … WebNever enter a trench with straight, unshored sides that’s greater than 4 ft deep. Note the . width. to . depth. ratio. Don’t enter a trench deeper than 20 ft unless an engineer has designed the trench shoring. Never enter a trench greater than 4 feet unless a “competent person” has designed or approved the trench. crock pot super bowl

英語「shore!」の意味・使い方・読み方 Weblio英和辞書

WebMar 7, 2016 · Most standard excavating equipment can reach down 10'-14', so if you go deeper than that you need to widen and bench the trench, which drives up the cost. Plus … WebA young worker was standing on a section of pipe in an unsloped, unshored trench about 6.5 feet deep. He was waiting for another worker to deliver a new section of pipe by … buffet newport news va