1 July 1998
f. HVAC system design. The completeness of the HVAC design included in the RFP will
vary by project and the Design Criteria Approach selected for the HVAC design. The complete
HVAC final design must be developed by the Design-Build contractor. HVAC system
construction should not begin until HVAC final design has been reviewed and cleared for
construction by the Government.
g. If interfacing with existing EMCS or UMCS systems is required, describe these
existing systems in the RFP technical specifications. Ensure that the design/build RFP, design
submittals, and construction activities are properly coordinated with Corps of Engineers
Mandatory Centers of Expertise. ER 111-1-8158 lists these Centers of Expertise whose
involvement is mandated by HQUSACE. For example, coordination with the ESS and UMCS
Mandatory Centers of Expertise is critical to ensure successful integration and implementation
of the associated systems and equipment..
h. Provide in the RFP technical specifications, the kind of air distribution (duct) system or
systems required or allowable including the use of internal liners, external insulation and vapor
barrier requirements and any plastic, FRP, or stainless steel ductwork. In humid areas, the
external insulation should be restricted to cellular glass with vapor barrier.
NOTE: Corps criteria prohibits underground ductwork because of potential problems such as
and testing and balancing difficulties. This is an example of where Corps criteria considers the
health and well-being of our customers and future maintenance problems for installation as
opposed to some practices that may be acceptable in the commercial sector.
i. Radon Mitigation. Identify the extent of Radon mitigation necessary and ensure that
these concerns are specifically addressed in the RFP and in final constructed facilities, as
appropriate. The Corps has recently completed EI 15M001, which supplements currently
available commercial criteria on Radon. EI 15M001 provides specific information about when
Radon mitigation is needed and the requirements for the mitigation.
j. Indoor Air Quality and Air Pollution. Special or additional ventilation requirements, or
other pollution abatement requirements, must be clearly specified in the RFP. For example,
there could include a user requirement for more air changes per hour, or special
dehumidification/humidification needs. Another example may be that laboratory fume hoods
may require special exhaust/ventilation systems or boilers may require special pollution
k. Testing, adjusting and balancing (TAB) of HVAC systems should be required in the
RFP and confirmed in the field by a quality assurance professional. The HVAC systems
should be accepted only after the required performance has been demonstrated.
I. HVAC system commissioning should be considered and included in the RFP on large
or complex projects where the added expense is justified. Effective HVAC commissioning will
require the combined efforts of the Design Criteria Professionals, quality assurance profes-
sionals, and the customer in partnership with the Design-Build contractor. Commissioning
should demonstrate that the HVAC systems were constructed and will perform in accordance