scope:

Purpose.

a. This manual provides guidance for engineers in the planning and design of heating, ventilation, and air-conditioning (HVAC) for hardened military and strategic facilities at new or existing Army installations. The material presented includes data for auxiliary equipment systems with special reference to underground installations not normally covered in HVAC manuals.

b. The term "hardened' applies to facilities intentionally designed to be resistant to conventional explosive effects, nuclear weapons effects, chemical or biological attack, and intruder attack. This manual addresses the technology of HVAC systems as it pertains to hardened facilities without regard to a specific type of attack, unless specifically required for design purposes.

c. Because of continuing research in the offensive and defensive techniques of warfare, it is strongly recommended that close coordination be maintained with the Commander, U.S. Army Corps of Engineers, Attention: HQDA (DAEN-ECE-T) Washington, D.C. 20314-1000 and the U.S. Army Armament Munitions and Chemical Command (AMCCOM) Chemical Research and Development Center (CRDC), Attention: SMCCR-PPP, Aberdeen Proving Ground, Maryland 21010-5423.

a. It is outside of the scope of this manual to cover explicitly all rules and procedures pertaining to HVAC design; however, the manual is written for HVAC engineers possessing state-of-the-art expertise in their discipline but who are unfamiliar with the requirements of hardened installations. Wherever possible reference is made to design data guidelines and information included in other references. Only design data that is not easily found elsewhere is included in the present manual.

b. Decontamination facilities and other HVAC protection against chemical and biological agents and radiological fallout are included in this manual, but the design of hardened facilities is covered in the references listed in appendix A. In particular, the TM 5-858 series of manuals pertains to "Designing of Facilities to Resist Nuclear Weapon Effects". In addition, TM 5-855-1 provides guidance for the design of facilities subject to non-nuclear attack, and TM 5-855-5 provides detailed guidance for protection from nuclear electromagnetic pulse.