ARMY ARMY TM 5-855-1 PDF

Purpose and scope.

This manual provides procedures for the design and analysis of protective structures subjected to the effects of conventional weapons. It is intended for use by engineers involved in designing deliberately hardened facilities. Users should have a basic knowledge of weapons effects and structural dynamics. Depending on the type of facility and the threat, the structure may be required to protect personnel and equipment against the effects of a penetrating weapon, a contact detonation, or the blast and fragmentation from a standoff detonation. In the last case, if the structure responds in a predominantly flexible mode, it is assumed that the element can be represented by a single-degree of- freedom (SDOF) system. Transformation factors needed to represent beams and slabs as equivalent SDOF systems are provided in the manual. If the loading or the geometry of the structure is such that a simple SDOF representation is inadequate to determine response, the analyst should consider using a multi-degree-of-freedom (MDOF) system or a finite element representation for calculations.