Friction angle

Peck et al. (1974) e Meyerhof (1956)

Meyerhof (1956) – Clays and Fill Soils

Scope of application:

Formulas:

Meyerhof, 1965

sand and silt ≤ 5%: a=29.47; b=0.46; c= 0.004

sand and silt > 5%: a=23.7; b=0.57; c= 0.006

Sowers, 1962

De Mello, 1967

Malcev, 1964

Schmertmann, 1977

Uniform fine sands: a= 28; b=0.14

Sands medium uniform: a=31.5; b=0.115

Sands medium grandate, Large uniform sands: a= 34.5, b= 0.1

Sands, gravels little silty, Gravel: a=38, b=0.08

Gravels: a=34.5, b=0.1

Dr=relative density [%]

ROAD BRIDGE SPECIFICATION

(JAPANESE NATIONAL RAILWAY) Shioi-Fukuni 1982

Iwasaki et al., 1977