Masood MontazerHaghighi - Student of Master, science and research branch of Islamic Azad university, Tehran, Iran
Panam Zarfam - Adviser professor, department of civil, art and architecture, science and research branch of Islamic Azad university, Tehran, Iran
Mirhamid Hossaini - Cosultant professor, science and research branch of Islamic Azad university, Tehran, Iran
Fereshteh Emami - Adviser professor, department of civil, art and architecture, science and research branch of Islamic Azad university, Tehran, Iran

Storage tanks have great importance on industries because keeping the fluids safe and sound was always one of the most important human necessities, so researchers tried hard to meet these goals with experimental models or calculate them manually. Most approaches, model the fluid self-reliantly or consider the fluid as a combination of masses and springs to demonstrate the influence of convective and flexible parts of the fluid. The impacts of the isolation and interior walls, simultaneously and independently had been discussed in this article. Three different types of analyses, to be precise modal and pushover and time-history analyses had been used. the tanks with length to width ratio 1 and height of 5 meters shows that isolation can increase R factor value about 6 times more than non-isolated ones.

LRB, interior-wall, Pushover, Time-history analysis, exposed reservoir