principles of Designing Underground Spaces Based on Passive Defense Considerations

Increasingly developing of the human civilization throughout the world will effect on human life
mode in future. The sphere population is increasing and the nations are searching for the best life
standards, and the earth must supply more food, energy and mineral reservoirs to support the
increasingly crowd. Underground spaces play a basis role in safe keeping the national assets and
currently, it is considered as the most attractive and safest option to use. The advantages of such
spaces are high security, low keeping costs, low energy-consuming, high degree of control and
prevention from biological impacts. according to these characteristics, these spaces are more
effective than other spaces. Therefore, using specially the passive defense approaches for many of
these spaces can make them very safe and they will be the powerful and secure cases in dangerous
and threatening conditions.In this study, at first the overall identification and assessment of
underground spaces was represented and then it has addressed the principles of architecture design
underground spaces with the presentation of applied patterns in some sectors such as, designing
entrances and external view, Locating and organizing spaces, Interior design, Lighting system,
safety and security in different condition. Architectural design of every underground space due to 
its situation like slope of the surface, the surface being trapped underground space and high density
construction on the ground, and the type of operation, such as business, sports, military and ..., is
done specifically; which considering design goals and the presented patterns help to better exploit it
and it will be fewer problems faced by farmers from the functional point of view.