You are a civil engineer designing a bridge. For 10 points each:
[10e] To avert subsidence, you ensure that these parts of the bridge extend deep into the subsoil. This term generally describes any underground part of a building that stabilizes it in the earth.
ANSWER: foundations
[10h] You design some of these structures to go atop part of the foundations, which will absorb the lateral force resulting from the span of the bridge. Analogously, the same term refers to substructures that stop either end of an arch from pushing further outward.
ANSWER: abutments
[10m] You choose to make the abutments out of this common composite material, in which pieces of steel rebar lie within a solidified mixture of cement and aggregate.
ANSWER: reinforced concrete [or reinforced cement concrete; or RC; or RCC; or ferroconcrete; prompt on concrete]
<Joseph Krol , Science - Engineering>