site; footing undercut; excavated site(“I’m a concrete structures expert … so when I saw the video, I thought, ‘Wow, that’s unbelievable.’ The wall is designed to help protect the sides of an excavation while the building foundation is built in the hole.
Vancouver developer Amacon confirmed in a statement that a section of a shoring retention wall failed at its project on Foster Avenue and North Road, where it is building a 40-plus-storey condo tower.
This resulted “in soil falling into the excavated site and a cavity in the soil in the area adjacent to the property.”vancouversun.comART Vancouver); excavation pit(Others added that a change in the environment, such as water underground that shifts its course of direction, can lead to a build-up of pressure that stresses the wall. Adebar, however, said in this case that the soil that crashed to the bottom of the excavation pit appeared in the video to be quite dry. “That suggests there wasn’t a big buildup of water behind that caused it, unless it started fracturing a day ago and all the water leaked out.”vancouversun.comART Vancouver)
cntd.ru Natalya Rovina); cut (Выемка в грунте, предназначенная для устройства оснований, фундаментов и/или других подземных частей сооружения 