... is strengthened. Slope/W applies the theory of equilibrium of forces and momentum for calculation of safety coefficient to prevent against damages. The theory of General Limit Equilibrium - ... slope sliding The problem of stability of a soil mass is a particular problem of the general theory on ultimate stressed state; however, it has some important features due to special movement ... the Central Highlands area has the main traffic routes, i.e. – Ho Chi Minh Trail passing Quang Nam, KonTum - National Highway no. 14 running from KonTum to Gia Lai, Dak Lak, Dak Nong, etc....