CowanMetodo para estimar el coeficiente de rugosidad "n" de Manning1Metodo de Cowan (vase Hidraulica de canales abiertos, Ven T. Chow)n00.024n10Baja irregularidad, comparable a lo mejor que se podria obtener con los materiales involucradosn20.005Alternanten30no tengo datosn40.005bajom51bajo y moderadon0.034

Determinacion n0% que PasaTamiz ASTMTamiz [mm]Calicata 1 (0,3 m)Calicata 1 (1,2 m)Calicata 2 (0,3 m)Calicata 2 (1,2 m)Calicata 3 (0,3 m)Calicata 3 (1,2 m)Calicata 4 (0,3 m)Calicata 4 (1,2 m)Calicata 5 (0,3 m)Calicata 5 (1,2 m)Calicata 6 (0,3 m)Calicata 6 (1,2 m)Calicata 7 (0,3 m)Calicata 7 (1,2 m)Calicata 8 (0,3 m)Calicata 8 (1,2 m)>292.1100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%100.0%11.5292.196.0%100.0%100.0%97.2%93.5%100.0%100.0%96.3%100.0%95.9%100.0%100.0%96.8%100.0%100.0%93.8%7.5190.594.6%100.0%98.3%97.2%90.8%100.0%98.0%94.9%98.4%94.6%98.5%100.0%95.8%99.4%97.8%91.4%4.5114.394.6%98.6%98.3%96.5%89.1%99.1%96.9%94.9%98.4%94.6%97.8%99.3%95.2%99.4%96.6%89.5%376.293.7%96.8%97.3%95.5%87.6%97.9%95.1%93.6%97.4%93.4%96.8%98.5%94.3%98.8%95.1%87.4%1 1/237.543.5%78.1%84.1%95.5%87.6%97.9%50.7%76.9%85.9%81.5%96.8%83.7%74.0%72.7%80.6%57.0%12543.5%60.6%68.7%95.5%87.6%77.4%50.7%72.9%71.2%71.2%75.5%66.8%70.0%64.7%80.6%47.5%3/41943.5%54.7%61.8%90.6%62.7%72.8%47.4%70.2%57.9%67.4%64.3%65.8%62.0%62.0%80.6%46.4%3/89.542.6%47.1%43.4%63.4%39.8%54.2%36.6%64.2%46.3%59.4%56.7%50.9%47.1%52.7%77.3%45.2%44.7540.0%39.5%27.3%46.5%33.6%45.4%31.1%55.9%40.0%52.2%49.5%45.0%34.1%45.6%70.0%42.6%10237.1%26.8%15.6%33.8%29.3%37.4%24.4%41.8%31.5%38.3%40.8%37.9%23.7%36.9%60.6%38.5%350.531.2%12.6%5.9%15.8%20.6%19.6%15.2%14.0%10.5%9.2%24.2%20.0%10.4%20.5%47.3%32.1%400.42520.9%8.3%2.2%6.6%5.8%3.4%9.3%6.9%5.2%4.0%14.7%11.6%5.3%10.6%29.5%25.5%1000.1514.7%5.2%1.4%4.0%3.9%1.6%7.6%4.0%4.2%2.8%1.6%8.7%4.0%6.8%19.9%17.3%1400.1068.6%3.1%0.8%2.2%2.5%0.8%5.8%1.7%3.3%1.9%0.9%6.1%2.8%3.8%13.7%10.9%2000.0754.7%1.5%0.4%1.1%1.6%0.4%4.3%0.8%2.3%1.1%0.5%3.9%1.9%1.9%6.9%5.9%3250.0441.8%0.6%0.2%0.3%0.7%0.1%2.4%0.2%1.0%0.5%0.3%1.8%0.9%0.6%2.2%2.9%>325