Factors, variables, and aspects Sabo Dam modelling capacity based on the Purwantoro Sabo Dam index model

Volcanic disaster risk mitigation cannot be perceived as a separating part of disaster management. Sabo Dam technology applied as lahar controller infrastructure that is part of management disaster and widely used in Indonesia. Purwantoro Sabo Dam Performance Index Model estimates the general functionality of a sabo dam in one index number. The simple calculation steps had been made which is conveniently usable and answer further practical demand such as operation and maintenance necessity, rehabilitation – newly construction prioritization decision support system, or emergency inspection aspect. Purwantoro Formula composed variables and factors that can be developed into more practical usage in the outcome approach. Capacity estimation over the Purwantoro Index is used as a disaster management approach to create capacity functions. Reviews of the actual capacity of compatibility of the three hierarchical factors, variables, and aspects are needed. It is carried out using a structural equation model with the partial least square method. The compatibility among the structures and outcome of capacity generates twenty-five grouped by nine components that are under three aspects (physical, regulative, and social) that suit the sabo dam’s potential capacity. The three hierarchical structures of aspect, component, and indicator are valid and appropriate to fulfill the t-test.