The phrase "as their foundation" is correct and usable in written English.
It can be used to indicate the underlying basis or principle upon which something is built or established.
Example: "The principles of honesty and integrity serve as their foundation in all business dealings."
Alternatives: "as their basis" or "as their core principle".
Instead, they drafted laws that used the commerce clause as their foundation, arguing that racial discrimination interfered with interstate commerce.
Many of the pictures at this year's festival use an obsession with American culture as their foundation.
Again playing a second-row on the blindside, the Tigers will look for set-piece supremacy as their foundation.
The Americans (in real life, designers from Lockheed Martin) go for muscle, selecting a Chevrolet truck as their foundation.
But its competition includes Time Warner Cable, which spent freely to acquire Lakers rights that had belonged to Fox Sports West, to start two networks with the marquee N.B.A. teams as their foundation.
The dark ecosystems are known as chemosynthetic because the microbes that serve as their foundation derive their energy from chemicals, in contrast to plants that use sunlight for photosynthesis.
And in every case, they say, monthly mortgage payments soared by up to $1,000 within a year after they moved in, as their foundations cracked, siding rusted and floorboards warped.
Different from other organizations, the UN (2003) primarily focused on optimizing the structure of statistical agencies, arguing that these agencies should obtain independence, relevance, credibility and respondent policies as their foundations.
Seven stark black pages form a bed for blips of language culled from the edges of what we know, and yet as everyday as anything in their foundation.
Based on this investigation, the inclination angle of the houses in the target area seems to be related to the type of building structure and their foundation as well to the local ground composition.
And serving as their culinary foundation are family traditions: nubby sage-scented sausages, eggy potato salad, homemade noodles, oven-baked chicken, bell pepper relish and stuffed baked apples, to name a few.
