The maximum possible height of a safe dam having an elementary profile is ________
f = allowable stress of dam material, G = specific gravity of dam material, and w = Unit weight of water1
\(\frac{{\rm{f}}}{{{\rm{w}}\sqrt {{\rm{G}} + 1} }}\)
2
\(\frac{{\rm{f}}}{{{\rm{w}}\sqrt {\rm{G}} }}\)
3
\(\frac{{\rm{f}}}{{{\rm{w}}\left( {{\rm{G}} + 1} \right)}}\)
4
\(\frac{{\rm{f}}}{{{\rm{w}}\sqrt {{\rm{G}} - 1} }}\)