every 20 years
Excavate means to dig up, generally out of the ground. Example sentence: A bull dozer was used to excavate the foundation of the building.
I think it will help to have a proper soil for the foundation to be laid
It isn't as critical as to how close you excavate to building foundations. You want to be more careful not to excavate below a building's foundation. As a geotechnical engineer, we recommend that excavations for additions or appertenant structures not be extended within a 2 horizontal to 1 vertical oversize area extending down and away from the outside edge of the existing building's foundation. Hopefully this helps.
of Excavate
The archaeologists began to excavate the ancient ruins in search of valuable artifacts.
That depends on what type of foundation you're going to build, whether it be block, pier, poured wall, or earth form. Please indicate the type you are inquiring about.
You need the World Adventures Expansion Pack in order to visit other countries to excavate.
excavate
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The archaeologists will excavate the site next month to uncover ancient artifacts buried under the ground.
For a foundation for a building, it is necessary to excavate at least below the soil zone, and further, sufficiently to enable a strong enough concrete foundation to support the intended building. Commonly, the base of the trench (the footing) will be a few times wider than the actual width of the foundation wall, so as to provide sufficient load bearing for the building.
the explorers continued to EXCAVATE the dirt for fossils.