found-intro

Early foundation designs were based on what?

(a)  

An excellent example of a new type of structure in which old rules for foundation no longer applies

(a)  

Eiffel tower was built in?

(a)  

Eiffel tower Adjacent to the (a)   and is underlain by difficult soil conditions (uncompacted fill and soft alluvial soils)

Eiffel devised a new way of exploring the soils, which consisted of driving (a)   diameter pipe filled with compressed air.

Piers for the nearby Alma bridge (founded in this alluvium) had already settled by (a)   .

Eiffel placed the foundations for the two legs furthest from the river on the shallow but firm alluvial soils. The bottom of these foundations were above GWT

• true

• false

He made the foundations for the other two legs much deeper so they too were founded on firm soils. This required (a)   - excavation below the ground surface (6m below GWT).

As structures continued to become larger and heavier, engineers continued to learn more about foundation design and construction.

• true

• false

is the art and science of molding materials we do not fully understand into shapes we cannot precisely analyze to resist forces we cannot accurately predict, all in such a way that the society at large is given no reason to suspect the extent of our ignorance.

(a)