Question

only snswer if u can explain and display the procedure well, i rate

Problem 5 As an engineer working for a major oil company, you are assigned the task of preparing the site shown below for construction of a storage reservoir. The full reservoir will weigh 20,000 tons when full and rest on a circular foundation with a radius of 75 feet. A rupture failure of the reservoir could have potentially disastrous environmental consequences. You are asked the following Find the change in stress below the center of the reservoir, and mid-height in the clay layer How settlement will eventually occur at the below the center of the reservoir When will 90% percent consolidation be achieved? · Soft Compressible Clay normally cousolidatedC-0.05, C-045 50ft Dense Saud Site as it Currently Exists

Answer 1

Wei ahr4 reservoir (Q)-20000 tons dundon a) いunifor m (g): press tare. This the case wnwtor mi load ed. cir cul ar area. Stress at . ang depth. ) dneh, umihrnly loaded circular an ea us gne n by , Here, he Cenrer 1-1ī mtita.rt}n] 40a. a s

, 1 tonn 2.000 al-the cente γ : Stress change ab he Center t the clay lager Ans (Sele metf clay lyer e meの s e Center 아 khe clad lager dere fo the lf-weight- clay ( IIS-62-4) % 25- Final effe chive stress at-khe center of the c lager i, 131S +212

. Seltlement of the clay layer is 2wen Ho.cc 1+e, 0 here , . Thickness σ . CIA) layer 50 S log | 3501 10 9S 6ns. kimate sett lemenk aue to Cms o lidab'on u.gis-Ft- İs Time requirea fr 90 For u >60y , time fachǐ for Con Solidahm i cal enlahed s e formula

17 81-0.933r lg (100-90) Tv Now where re, Cv: Co-e icient consolidation kness drainage path DThick doy double drainage singe Were, cley laye ble san occur only Singie drainage Cundihon Gai ager e avoinge can γου

m the above equahiom uwe ge ence 8481ot 501 → t= 212 grs. Time Te quired fCsmso li datiom is 21 2 yTS. 1f suppose double drainage candihon prevails han 0.848 : lo»-t sideriny double drainage candiho