Concrete in the country / [American Cement Company]. (1910)
American Cement Company · Association of American Portland Cement Manufacturers · leaf 62
l will be in sectionsof 10 feet in length. The wallwill be 3 inches thick at top, 12inches thick at the base, 7 feetabove and 3 below ground, withthe slope side toward exercise lot. To securely brace the sec-tions of this wall, large posts(called buttresses) are needed.These posts are the full… … * • 1