1 July 1998
d. Sound and vibration. Latest edition ASHRAE Handbook, HVAC Applications, Chapter
42, and TM 5-805-4.
e. Single-Loop Controller (SLC) systems are currently the Army's standard. They are
nonproprietary and may be connected to essentially any Utility Monitoring Control System
(UMCS). The RFP must include the necessary Corps of Engineers' SLC technical manuals
and guide specifications to ensure that the HVAC control systems installed are effective and
reliable. Nonproprietary Direct Digital Control (DDC) systems may be allowed with an
approved waiver. Proprietary or brand-specific DDC systems compatible with the installation's
existing UMCS may be allowed as a Design-Build contractor's option to the SLC system. If
DDC systems are allowed, the Corps of Engineers' standard drawings for DDC and guide
specifications must also be included in the RFP. If a proprietary DDC system is allowed as an
option, the brand name and other necessary features of the existing DDC or UMCS system, as
well as the level of graphical interface that must be provided will be included in the RFP.
Selection of systems to be allowed in the RFP should consider the desires of the customer,
systems used in the existing facilities on the installation, and the facility management
f. Utility Monitoring and Control Systems shall be designed in accordance with
requirements of TM 5-815-2 and Corps of Engineers Guide Specification.
9-2. LESSONS LEARNED. The following subparagraphs contain recommended information
that should be considered in RFP's in order to avoid past problems, define engineering
requirements, define design submittal requirements, and ensure a level of quality. These
lessons learned should be reviewed and incorporated as appropriate in each new project.
a. During predesign phase, determine customer's requirements for HVAC. Determine if
central energy plants are available. Discuss customer desired type of environmental systems
(i.e., personnel comfort, process or computer cooling, freeze protection, etc.). HVAC system
requirements included in the RFP should be approved and accepted by the customer and
b. Discuss any requirements for connection to the installation energy monitoring control
system or utility monitoring control system.
c. Discuss requirements for natural gas, fuel oil, and water flow meters.
d. The customer, major command, and Corps of Engineers must come to an agreement
as to the type of building desired and list acceptable or unacceptable features and systems.
e. Selecting HVAC systems. HVAC system selections should be based on energy
conservation, life cycle cost, and maintenance considerations as well as the functional
requirements of the facility and the comfort levels in the spaces. Life cycle cost studies and
energy analyses shall be performed by the Design Criteria Professionals when preparing the
technical requirements for the RFP. The RFP should clearly indicate the HVAC system or
systems to be used. Where appropriate, provide a listing of optional HVAC systems for the
Design-Build contractor's selection. However, Design-Build contractors will tend to select from
the allowable options based on initial cost.