Am-0005_W9128F-20-R-0078.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: Contractor is not is required to sign this document and return copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

Amendment No. 0005 W9128F

EXPAND MIDFIELD FACILITY XQPZ 174006, REPAIR MIDFIELD FACILITY XQPZ 100109, USAF ACADEMY, COLORADO

See attached documentation for content of the amendment revisions to solicitation

Date for receipt of proposals is 5 NOV 2020 at 1400 hours

Government Point of Contact: Brian Finerty, Contract Specialist, Brian.C.Finerty@usace.army.mil

U.S.ARMY CORPS OF ENGINEERS, OMAHA

Rocky Mountain Area Office Attn: CONTRACTING DIVISION (CENWO-CT-M) 5475 Tech Center Drive, Suite 205 Colorado Springs, CO 80919

See Item 6

W9128F-20-R-0078

10/28/2020

09/23/2020

10/28/2020

Am #0005 - 1

Am #0005 - 2 (Continuation SF 30)

28 October 2020 Solicitation No. W9128F 20 R 0078

Date of Issue: 23 SEP 2020 Date of Receiving Proposals: 05 NOV 2020

SUBJECT: Amendment No. 0005 to Request for Proposal Solicitation Package for Construction of EXPAND MIDFIELD FACILITY XQPZ 174006, REPAIR MIDFIELD

FACILITY XQPZ 100109.

TO: Prospective Offerors and Others Concerned

1. The specifications and drawings for subject project are hereby modified as follows (revise all specification indices, attachment lists, and drawing indices accordingly).

a. Specifications. (Descriptive Changes.) NONE

b. Specifications (New and/or Revised and Reissued). Delete and substitute or add specification pages or sections as noted below. The substituted pages or sections are revised and reissued with this amendment. For convenience, on the revised specification pages, changes have been identified with highlighting, all portions of the revised specification pages apply regardless of whether changes are shown with highlighting.

Pages or Sections Deleted Pages or Sections Substituted or Added 01 86 10 01 86 10 01 89 00 01 89 00

c. Drawings (Reissued). The following drawings are revised with latest revision date as shown in the drawing border and reissued with this amendment.

(1) SHEET CU101, UTILITY PLAN

2. This amendment is a part of the proposing papers and its receipt shall be acknowledged. All other conditions and requirements of the request for proposal remain unchanged.

3. Electronic Proposals. Provide proposals via the instructions provided in Section 00 22 00 of the Request for Proposal.

4. Offers will be received until 2:00 p.m., local time at place of receiving proposals, 05 NOV 2020.

Attachments:

Specifications listed in 1.b., above Drawings listed 1.c., above

U.S. Army Corps of Engineers, Omaha District 1616 Capitol Avenue Omaha, Nebraska 68102-4901

28 OCT 2020

nep/2160

Expand Midfield Facility - USAFA, CO AA69

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 86 10

MECHANICAL REQUIREMENTS

PART 1 MECHANICAL REQUIREMENTS

1.1 MECHANICAL SYSTEMS CRITERIA

1.1.1 General Parameters/References

1.2 MECHANICAL SCOPE OF WORK

1.3 DESIGN REQUIREMENTS

1.3.1 Design Analysis

1.3.2 Calculations

1.3.3 Drawings and Specifications

1.3.4 System Design Requirements

1.3.5 Design and Construction Execution

1.4 HVAC REQUIREMENTS

1.4.1 General Requirements - Expand Midfield Facility (CLIN

0001/CLIN 0002):

1.4.2 General Requirements - Repair Midfield Facility (CLIN

0003/CLIN 0004):

1.4.3 Existing Telecom Room

1.4.4 Mechanical Room

1.4.5 Vestibules

1.5 GENERAL REQUIREMENTS

1.5.1 Design Considerations

1.5.1.1 Mechanical Equipment Layout

1.5.1.2 Mechanical Systems

1.5.1.3 Natural Gas

1.5.2 Installation Considerations

1.5.2.1 Mechanical/Electrical Equipment Coordination

1.5.2.2 General Mechanical Requirements

1.5.2.3 Vibration Isolation / Equipment Pads

1.5.2.4 Standard Products

1.5.2.4.1 Chiller Manufacturer

1.5.2.5 Utility Interruptions

1.5.2.6 Spare Parts

1.5.2.7 Labeling

1.5.3 Design Conditions

1.5.3.1 Site Elevation

1.5.3.2 Latitude

1.5.3.3 Longitude

1.5.3.4 Outside Design Conditions

1.5.3.5 Inside Design Conditions

1.5.3.6 Minimum Ventilation Requirements

1.5.3.7 Cooling Load

1.5.4 Antiterrorism/Force Protection

1.5.5 EQUIPMENT REQUIREMENTS

1.5.5.1 Equipment Identification

1.5.5.2 Identification of Piping

1.5.5.3 Air Cooled Chillers

1.5.5.4 Fan Coil Units

1.5.5.5 Chilled and Heating Water Pumps

SECTION 01 86 10 Page 1Am #0005

1.5.5.6 Hot Water Boilers

1.5.5.7 Glycol Feed System

1.5.5.8 Air-Handling Units - Variable Volume

1.5.5.9 Ductwork

1.5.5.10 Variable-Air Volume Boxes/Terminals

1.5.5.11 Exhaust Fans

1.6 SEISMIC PROTECTION FOR MECHANICAL PIPING, DUCTWORK, AND EQUIPMENT

1.6.1 Piping

1.6.2 Ductwork

1.6.3 Miscellaneous Equipment

1.7 THERMAL INSULATION OF MECHANICAL SYSTEMS

1.7.1 Insulation Covers

1.8 HYDRONIC PIPING REQUIREMENTS

1.8.1 Piping Layout

1.8.2 Pipe Sizing

1.8.3 Pipe Materials

1.8.4 Pipe Joints

1.8.5 Pipe Expansion

1.8.6 Isolation Valves

1.9 INTERIOR GAS PIPING SYSTEM

1.9.1 Gas Pipe Sizing

1.9.2 Equipment Connections

1.10 BUILDING TEMPERATURE CONTROL SYSTEM

1.10.1 General DDC Requirements

1.10.2 Alarm Monitoring

1.10.3 Stand-Alone Operation

1.10.4 Input/Output Devices

1.10.5 Cable and Wiring

1.10.6 Control Valves

1.10.7 Control Dampers and Actuators

1.10.8 Valve Actuators

1.10.9 HVAC Control Drawings

1.10.9.1 Control Schematic

1.10.9.2 Sequence of Control

1.10.9.3 Description of Components

1.10.9.4 Legends and Schedules

1.10.9.5 System Checklists and Startup Instructions

1.10.9.6 Cybersecurity

1.11 TESTING, ADJUSTING, AND BALANCING (TAB) OF HVAC SYSTEMS

1.11.1 Balancing Firm Qualifications

1.12 COMMISSIONING OF HVAC SYSTEMS

1.12.1 General

1.12.2 Commissioning Firm Qualifications

1.12.3 Checklists

1.12.4 Pre-commissioning Checks

1.12.5 Functional Performance Tests

1.13 PLUMBING REQUIREMENTS

1.13.1 Domestic Water

1.13.2 Domestic Water Heating Systems

1.13.3 Sanitary Waste and Vent Piping System

1.13.4 Storm Water Roof Drainage System

1.13.5 Condensate Piping

1.13.6 Plumbing Fixtures

1.13.6.1 Water Closets

1.13.6.2 Urinals

1.13.6.3 Lavatories

1.13.6.4 Sink

1.13.6.5 Electric Water Cooler

1.13.7 Radon System

SECTION 01 86 10 Page 2Am #0005

1.14 OPERATION AND MAINTENANCE REQUIREMENTS

1.14.1 Facility Operation and Maintenance Manuals

1.14.2 Operation and Maintenance Training Course and Manuals

1.14.2.1 Training Course Content

1.14.2.2 Video Taping

-- End of Section Table of Contents --

SECTION 01 86 10 Page 3Am #0005

SECTION 01 86 10

MECHANICAL REQUIREMENTS

PART 1 MECHANICAL REQUIREMENTS

1.1 MECHANICAL SYSTEMS CRITERIA

1.1.1 General Parameters/References

Mechanical systems, (i.e. HVAC systems, plumbing systems, heating and chilled water piping, equipment, building temperature controls, gas distribution system, etc.) shall be designed and constructed to comply with this chapter and the documents listed below to the extent referenced in this section. The publications are referred to in the text by basic designation only. The latest edition of the following standards and codes in effect and amended as of date of supplier's proposal, and any subsections thereof as applicable, shall govern design and selection of equipment and material supplied:

ASSOCIATED AIR BALANCE COUNCIL (AABC)

AABC MN-1 National Standards for Total System Balance

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI A13.1 Scheme for the Identification of Piping Systems

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING

ENGINEERS (ASHRAE)

ASHRAE Handbooks ASHRAE Fundamentals, Applications, HVAC Systems and Equipment

ASHRAE 15 ANSI/ASHRAE Standard 15-Safety Standard for Refrigeration Systems and ANSI/ASHRAE Standard 34-Designation and Safety Classification of Refrigerants

ASHRAE 189.1 Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings

ASHRAE 55 Thermal Environmental Conditions for Human Occupancy

ASHRAE 62.1 Ventilation for Acceptable Indoor Air Quality

ASHRAE 90.1-IP Energy Standard for Buildings Except Low-Rise Residential Buildings

SECTION 01 86 10 Page 4Am #0005

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME CSD-1 Control and Safety Devices for Automatically Fired Boilers

ASTM INTERNATIONAL (ASTM)

ASTM A53/A53M Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM D1785 Standard Specification for Poly(Vinyl Chloride) (PVC), Plastic Pipe, Schedules 40, 80, and 120

INTERNATIONAL CODE COUNCIL (ICC)

ICC IBC International Building Code

ICC IMC International Mechanical Code

ICC IPC International Plumbing Code

ICC IECC International Energy Conservation Code

ICC IGC International Gas Code

NATIONAL ENVIRONMENTAL BALANCING BUREAU (NEBB)

NEBB-01 Procedural Standards for Whole Building Systems Commissioning of New Construction

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 54 National Fuel Gas Code

NFPA 70 National Electrical Code (NEC)

NFPA 72 National Fire Alarm and Signaling Code

NFPA 90A Standard for the Installation of Air Conditioning and Ventilating Systems

SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION

(SMACNA)

SMACNA Guidelines IAQ Guidelines for Occupied Buildings Under Construction

SMACNA 1966 HVAC Duct Construction Standards Metal and Flexible

U.S. DEPARTMENT OF DEFENSE (DOD)

UFC 1-200-01 (DoD Building Code

UFC 1-200-02 High Performance and Sustainable Building Requirements

SECTION 01 86 10 Page 5Am #0005

UFC 3-310-04 Seismic Design for Buildings

UFC 3-400-02 Engineering Weather Data

UFC 3-401-01 Mechanical Engineering

UFC 3-410-01 Heating, Ventilating, Air Conditioning and Dehumidifying Systems

UFC 3-410-02 Direct Digital Control for HVAC and Other Systems

UFC 3-420-01 Plumbing Systems

UFC 3-430-07 Inspection and Certification of Boilers and Unfired Pressure Vessels

UFC 3-450-01 Noise and Vibration Control

UFC 4-010-01 DoD Minimum Antiterrorism Standards for Buildings

UFC 4-010-06 Cybersecurity of Facility-Related Control Systems

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

EO 13423 Strengthening Federal Environmental, Energy, and Transportation Management

PL 109-58 Energy Policy Act of 2005

PL 110-140 Energy Independence and Security Act of

1.2 MECHANICAL SCOPE OF WORK

The following provides the mechanical and plumbing scope of work for this contract. Contractor shall provide for both design and construction requirements necessary to meet the mechanical scope of work. Any sizes, capacities or layout of equipment of systems provided as part of this scope of work shall be validated by the designer of record. All associated work in this contract shall be in compliance with the latest scope criteria and applicable code requirements.

1.3 DESIGN REQUIREMENTS

The Contractor is responsible for design and for meeting performance criteria stated in the RFP. The contractor is required to furnish plans, specifications, a design analysis, and calculations for review to demonstrate the design complies with the RFP requirements. The Contractor's drawings, specifications, design analysis and calculations shall be provided as required for the 60 percent design and the Final design submittals in accordance Section 01 33 00.36 60 PERCENT DESIGN REQUIREMENTS, and Section 01 33 00.38 - 100 PERCENT DESIGN REQUIREMENTS.

The as-built drawings shall be in accordance with Section 01 78 39.00 24, AS-BUILT DRAWINGS.

SECTION 01 86 10 Page 6Am #0005

1.3.1 Design Analysis

Provide a design analysis/narrative to document the criteria usage, outdoor and indoor design conditions, HVAC system selection analysis, U-factors, ventilation rates, control strategies, personnel loads, equipment loads, domestic water, sanitary waste, natural gas, plumbing fixtures, ATFP requirements, and other design considerations.

1.3.2 Calculations

The Contractor shall perform heating, ventilation and air conditioning calculations to determine the HVAC loads for the building. Documentation of the calculations shall be provided and shall include complete input and output summaries, room load calculations, block load calculations and calculations for each system / air handling unit. Pre-approved computer load analysis programs are Hourly Analysis Program (HAP) by Carrier Corp., Trace 700 by Trane Corp., DOE-2 by US Department of Energy and EnergyPlus by DoD/DoE. If the designer wishes to use a different load analysis program, this shall be specifically listed in the proposal and requires approval by the Contracting Officer's Representative. Room air flow requirements shall be computed based on the individual room loads. HVAC loads for telecommunication room shall be coordinated with end-user and final design. All HVAC equipment shall be sized and selected based on the calculated block sensible and total loads for each space. Provide plumbing calculations leading to sizing of domestic water heater, domestic water pump, sanitary waste pipe size, domestic water pipe size and other plumbing system components.

1.3.3 Drawings and Specifications

Design drawings and specifications shall be developed as required to meet the mechanical scope of work. This shall include locations of all equipment, ductwork, and piping (i.e. air handling units, boilers, pumps, chillers, fan coil units, ductwork, diffusers, grilles, supply fans, exhaust fans, air intakes and exhausts, temperature sensors, heating and chilled water piping and condensate drain lines, domestic water piping, sanitary waste and vent piping, water heater(s), etc.).

Government provided Unified Facility Guide Specification (UFGS)(available to the Contractor as indicated in Section 01 33 00, SUBMITTAL PROCEDURES) shall be completely edited and fully coordinated with the contractor's drawings to accurately and clearly identify the product and installation requirements for the facility. The contractor's specifications shall not be edited to reduce the level of quality for equipment services provided, or materials. The contractor's specifications shall be edited in accordance with the designer notes associated with each specification and with the Specification Requirements (Division 01 General Requirement Specifications). In case of a conflict, the criteria found in the Specification Requirements (Division 01 General Requirement Specifications) shall take precedence. The provided specifications define the minimum requirements for items of equipment, materials, installation, training, operating and maintenance instructions, O&M manuals and testing that shall be provided for the facility. Where items of equipment, materials, installation, training, operating and maintenance instructions, O&M manuals or testing requirements are not specified in the provided specifications, special paragraphs within each applicable guide specification shall be prepared to specify those items. Government approval is required for any addition of materials, equipment, or

SECTION 01 86 10 Page 7Am #0005 installation requirements not covered in the guide specifications.

Specific items of equipment identified in the provided specifications but not required for the facility shall be edited out.

Unless instructed otherwise, specifications shall be in review format with editing adjustments identified (in electronic versions: deletions shall be flagged by red lettering, additions by green lettering; in printed versions: deletions shall be identified "striking through", additions by underlining).

1.3.4 System Design Requirements

Mechanical systems, including HVAC systems, plumbing, and HVAC controls shall be designed to comply with this section, per all applicable UFC, and to the extent referenced in the documents listed above. HVAC system selection shall be based on the results of a life cycle cost analysis as performed by the Contractor in accordance with the requirements listed in UFC 1-200-02, UFC 3-410-01, and UFC 3-401-01. Determination of the final system selection and corresponding life cycle cost analysis is the responsibility of the Contractor.

Equipment selections shall be made for all major pieces of equipment, (i.e. boilers, chillers, pumps, fan coil units, VAV boxes, air handling units, ductless split systems, supply fans, exhaust fans, air intake louvers or hoods, etc.). Catalog data shall be provided as part of the design analysis to demonstrate that the selected equipment will meet the applicable operational and physical space requirements.

1.3.5 Design and Construction Execution

The successful offeror shall complete the design documentation and construct the project in compliance with these RFP requirements.

1.4 HVAC REQUIREMENTS

1.4.1 General Requirements - Expand Midfield Facility (CLIN 0001/CLIN 0002):

The air handling system(s) and cooling system for the addition shall be separate from the existing building. The existing chilled water system, existing air handling units, and existing VAV terminal units shall remain and shall not be used to serve the addition. System selection is the responsibility of the Contractor based on the results of the life cycle cost analysis. The suggested HVAC system type to serve the new addition is a VAV hot water reheat system with an air-cooled chiller and hot water boilers.

The existing boiler and hot water pumps located in the existing mechanical room shall be removed. New heating water equipment shall be installed and shall be sized to accommodate the heating load in the addition plus the existing building heating requirements. The intent is for the new heating system to heat both the addition and the existing building once installed. Existing boiler and hot water pumps and associated equipment pads shall be removed from the existing mechanical room. Contractor shall install new piping from the new system to connect to existing piping at existing mechanical room. The Contractor shall install the new heating water equipment in a manner that minimizes downtime of the existing

SECTION 01 86 10 Page 8Am #0005 building HVAC system. Utilization of electric resistance heating in the addition is prohibited in all occupied spaces.

Centralized interior equipment serving the new addition shall be installed in the new mechanical room being constructed as part of the addition or in the existing mechanical room where the boiler is currently located.

Anticipated centralized interior equipment includes, but is not limited to, air handling units, boilers, heating hot water pumps, and chilled water pumps.

Exterior mechanical equipment, such as an air-cooled condensing unit or an air-cooled chiller, shall be located in the existing mechanical courtyard. The existing electrical transformer in the courtyard shall be removed, which will create an open space for the new HVAC equipment. The existing courtyard is covered by a metal grate, which may be removed and re-installed to accommodate the new equipment installation. Installation of an exterior air handling unit is prohibited. Roof-mounted equipment is prohibited.

A kitchen hood is not required to be installed in the Lounge and/or Warming Kitchen.

An emergency HVAC shutdown switch is required to be installed in accordance with UFC 4-010-01. Existing and new air-moving equipment shall be shut down upon switch activation. Existing control dampers in ductwork leading to the building exterior shall be replaced and shall close upon switch activation. New control dampers in ducts leading to the building exterior shall also close upon switch activation. Existing and new equipment weighing more than 31 pounds shall be braced in accordance with

UFC 4-010-01.

1.4.2 General Requirements - Repair Midfield Facility (CLIN 0003/CLIN 0004):

The existing HVAC system shall be modified to accommodate for the new architectural layout in the renovated area. The existing VAV reheat terminal units serving the renovated area, the restroom exhaust fan, and the vestibule cabinet unit heater shall be removed. A minimum quantity of four new VAV reheat terminal units shall be added to the existing system.

This will require new medium velocity ductwork to be routed from the existing ductwork above the existing restrooms to the new VAV terminal units. Low velocity ductwork shall be routed from the VAV reheat units to the ceiling supply diffusers in the new rooms being created. The existing return air path is the ceiling plenum – return grilles and transfers shall be added to keep the return path intact. The existing hot water piping shall be modified as required and extended to the new VAV terminal units.

The existing control system shall be updated to match the new equipment/zoning.

1.4.3 Existing Telecom Room

A new server rack shall be added to the existing telecom room under the Expand Midfield Facility (CLIN 0001/CLIN 0002). The Contractor shall add an air-cooled ductless split system with an inverter compressor and low ambient controls down to zero degrees F to serve the telecom room. The system shall be sized to accommodate the total heat gain from equipment in the room. [*Am-4] Assume a total (existing plus new rack) of 6kW of heat rejection to the room for bidding purposes. Verify exact requirement during design. [**Am-4] The existing VAV terminal unit serving the

SECTION 01 86 10 Page 9Am #0005 telecom room shall remain in place to provide partial redundancy.

1.4.4 Mechanical Room

The mechanical room shall be heated and ventilated only. Electric resistance heating is prohibited in accordance with UFC 3-410-01 since hot water heating will be available. The mechanical room shall be mechanically ventilated when the space temperature rises above 85 degrees F.

1.4.5 Vestibules

Vestibules shall be heated only. Electric resistance heating is prohibited in accordance with UFC 3-410-01 since hot water heating will be available.

1.5 GENERAL REQUIREMENTS

1.5.1 Design Considerations

1.5.1.1 Mechanical Equipment Layout

The mechanical equipment layouts shall be provided with ample space to accommodate routine maintenance of equipment. Space provided for service and/or replacement of filters, coils, motors, and other equipment items shall be indicated with broken (dashed) lines and dimensioned on the contractor's drawings. Provisions for installation, removal, and future replacement of equipment shall be coordinated with the architectural design. The arrangement, selection, and sizing of all mechanical equipment shall be such that it can be broken down and removed from the building without dismantling any adjacent systems or structures.

1.5.1.2 Mechanical Systems

Provide building mechanical systems, complete and ready for operation. The design and installation of all mechanical systems, including manufacturer's products, shall meet the instructions and requirements contained herein and the requirements of the referenced technical guide specifications. Where conflicts between these instructions and the guide specifications or above mentioned criteria exist, these instructions shall take precedence. Any installation requirements within these instructions, but not contained in the specifications, shall be added to the specifications or shown on the contractor's drawings.

1.5.1.3 Natural Gas

Selection of natural gas burning equipment shall take elevation correction factors into account. The btu content of the natural gas supply shall be confirmed with the Utility.[*Am-4] The existing gas service to the building is 2" polyethylene and is operated at a pressure of approximately 66 PSI. [**Am-4]

1.5.2 Installation Considerations

1.5.2.1 Mechanical/Electrical Equipment Coordination

Arrangement of all mechanical equipment and piping shall be coordinated with electrical work to prevent interference with electrical conduits.

This shall include placement of mechanical equipment and electrical

SECTION 01 86 10 Page 10Am #0005 conduits in manner that the conduits do not restrict access to the mechanical equipment for maintenance, repair or replacement. Clearances required by NFPA 70 above and in front of electrical panels and devices shall be maintained. Mechanical equipment (pipes, ducts, etc.) shall not be installed OVER OR WITHIN SPACE which is dedicated to transformers, panelboards, or other electrical equipment unless items solely serve the area. When electrical equipment is located in a mechanical equipment space, the dedicated electrical space shall be indicated by a dashed line and noted "Electrical Equipment Space".

1.5.2.2 General Mechanical Requirements

As applicable, the following shall be provided for all mechanical systems:

a. All piping and equipment located in finished areas of the building shall be concealed or furred-in; exposed piping and equipment is only allowed in mechanical, equipment, and other rooms of this nature.

b. Provide isolation valves, balancing valve/flow measuring devices, and pressure/temperature test taps at the air handling unit coil(s) and at each fan coil or VAV terminal reheat unit. At each air handling unit coil provide supply and return water thermometers and a pressure gage valved to allow reading of supply or return water pressure.

c. All coils shall be provided with valved drain and air vent connections.

d. Air vents shall be installed on all high points in piping systems.

Drain valves shall be installed at low points and at equipment which must be dismantled for servicing.

e. All vents, drain valves, and strainers which are located out of mechanical equipment spaces shall be provided with hose-end connections. All vents, drain valves, and strainers which are located within mechanical equipment spaces shall be piped to the nearest floor drain or floor sink.

f. Eccentric reducers shall not be used.

g. All pipe, ductwork and equipment supports and hangers shall be coordinated with the structure design to avoid possible overloading of any structural elements. Adequate pipe supports and hangers shall be used to prevent piping from imparting load to connected equipment.

h. Where steel flanges mate with cast-iron flanges, provide flat faces and full face gaskets.

i. Piping and supports shall not interfere with equipment maintenance access or pull space.

j. Dielectric nipples shall be installed between dissimilar metals in soldered, brazed and threaded piping systems and insulated flanges shall be installed for welded systems.

k. Provide sufficient permanently installed instrumentation to aid maintenance personnel in balancing and/or troubleshooting

SECTION 01 86 10 Page 11Am #0005 mechanical systems. Instrumentation shall be provided in the media at each change in temperature and at all mixing points in hydronic piping. Pressure gauges, thermometers, flow indicators, etc., shall be installed to be easily read from the adjacent floor.

1.5.2.3 Vibration Isolation / Equipment Pads

Provide vibration isolation devices on all floor mounted or suspended mechanical equipment. All floor mounted mechanical equipment shall be provided with 6 inch housekeeping pads which extend 6 inches all around equipment provided.

1.5.2.4 Standard Products

Standard Products - Material and equipment shall be a standard product of a manufacturer regularly engaged in the manufacture of the product and shall be essentially duplicate items that have been in satisfactory use for at least 2 years prior to bid opening. The label or listing of the Underwriters Laboratories, Inc., shall be accepted as evidence that the materials or equipment conform to the applicable standards of that agency.

In lieu of this label or listing, a statement from a nationally recognized, adequately equipped testing agency indicating that the items have been tested in accordance with required procedures and that the materials and equipment comply with all contract requirements shall be accepted.

1.5.2.4.1 Chiller Manufacturer

If a chiller is used, the manufacturer shall be Trane per the Justification and Approval authorization at USAFA.

1.5.2.5 Utility Interruptions

Refer to utility interruption limitations in Division 01 specs.

The existing heating hot water equipment shall be removed as noted in section 1.4.1 above. The new heating hot water system shall serve the entire building, both existing and new. It is recognized that the heating hot water system will be unavailable for a period of time. The Contractor shall coordinate the hot water system downtime similar to as described in Division 01 specifications for utility outages and it shall be noted on the Contractor's Phasing Plan. The preference is for the Contractor to perform this work during the cooling season or during an unoccupied period. If the work is performed during occupied hours and during the heating season, the Contractor shall provide temporary heating to the existing building to maintain the occupied areas at a minimum of 68 deg F during the downtime. Contractor shall minimize downtime of the hot water system. Maximum downtime of the hot water system shall be 5 working days.

1.5.2.6 Spare Parts

Proprietary spare parts lists that require more than a 60 day lead time, and/or any special service tools shall be provided to the Government prior to acceptance of the system.

1.5.2.7 Labeling

All ductwork, piping, and mechanical equipment shall be labeled in accordance with ANSI A13.1. Labels in the Mechanical Room and above

SECTION 01 86 10 Page 12Am #0005 ceilings shall be readable from the floor. Piping and ductwork shall be labeled at intervals no greater than 25 feet.

1.5.3 Design Conditions

The following conditions from the UFC 3-400-02, Design: Engineering Weather Data shall be used in designing the mechanical systems:

1.5.3.1 Site Elevation

Equipment design elevation is 6,172 feet above sea level.

1.5.3.2 Latitude

38.82° North

1.5.3.3 Longitude

104.70° West

1.5.3.4 Outside Design Conditions

Winter:

a. 5°F.

Summer:

a. 88°F DB and 58°F MCWB.

b. 62°F WB and 78°F MCDB.

1.5.3.5 Inside Design Conditions

Winter:

a. 68°F for all occupied areas including Offices, Meeting Rooms, Corridors, Restrooms and Janitors Closets.

b. 72°F for Communications Equipment Room(NIPR/SIPR).

c. 50°F for Vestibules, Mechanical and Electrical Rooms.

Summer:

a. 78°F for all occupied areas including Offices, Meeting Rooms, Corridors and Restrooms.

b. 72°F for Communications Equipment Room(NIPR/SIPR).

c. Ventilation for Mechanical and Electrical rooms when the space is above 85°F per UFC 3-410-01.

d. No cooling in the Vestibules. [*Am-4]

e. Heat from the simulator equipment is rejected into space. Each simulator consists of 3 monitors and one CPU. Anticipated heat gain for each simulator is 275 watts. [**Am-4]

1.5.3.6 Minimum Ventilation Requirements

All occupied spaces shall be mechanically ventilated in accordance with ASHRAE Standard 62.1.

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1.5.3.7 Cooling Load

Lighting Coordinate with Electrical designer Electrical Rooms Coordinate with Electrical designer

Owner Furnished Equipment Coordinate with Electrical designer for load and location

1.5.4 Antiterrorism/Force Protection

Antiterrorism/Force Protection shall follow UFC 4-010-01.

1.5.5 EQUIPMENT REQUIREMENTS

The information provided below is minimum equipment requirements for equipment that may or may not be used depending on the HVAC system type selected.

1.5.5.1 Equipment Identification

Provide a brass name tag for each valve, temperature control device, control system device (including but not limited to sensors, controllers, etc.), etc., installed in all mechanical. In addition, all mechanical equipment shall be clearly identified with a conspicuously located, permanent label. Mechanical equipment shall be identified by type and sequence number.

1.5.5.2 Identification of Piping

All exposed and concealed piping in accessible spaces shall be identified with color coded bands and titles in accordance with ANSI Standard A13.1, and the requirements of UFGS Section 09 90 00 PAINTS AND COATINGS.

1.5.5.3 Air Cooled Chillers

The chiller(s) shall be capable of providing adequate chilled water to meet the peak cooling requirement. The chiller shall be designed to operate with adequate level of propylene glycol / water mixture to prevent freezing of the solution at the winter outside air design temperature, and the standard conditions capacity rating shall be corrected for the use of this glycol mixture and the site elevation. The chiller shall have a minimum efficiency meeting the applicable requirements of ASHRAE Standard

90.1. The chiller shall be provided with the manufacturers standard hail and trash guards for physical protection.

1.5.5.4 Fan Coil Units

Fan coil units shall be concealed configuration with heating coil, cooling coil, disposable filter and condensate drain pan. Each fan coil unit shall be provided with a two-way, modulating heating coil control valve, a two-way, modulating chilled water control valve, a programmable controller and a room space temperature sensor with setpoint and space temperature display (at the temperature sensor.) Coils shall be selected for the required heating and cooling loads. The units standard conditions capacity ratings shall be corrected for the site elevation.

1.5.5.5 Chilled and Heating Water Pumps

The chilled and heating water pumps shall be base mounted, end-suction, SECTION 01 86 10 Page 14Am #0005 centrifugal or pipe mounted, in-line centrifugal pumps, providing N+1 redundancy to allow replacement of a failed pump while the system is running at full load. The pumps shall comply with the requirements of UFGS Section 23 64 26. Pumps shall be sized for 110 percent of the maximum required water flow and 110 percent of the maximum system head pressure.

Pumps shall be non-overloading allowing the pump to operate at any point on its characteristic curve. Pumps shall be provided with flexible connectors, balance valve, check valve, pressure gage, P & T test ports and isolation valves. Where required, base mounted, end suction pumps shall be provided with neoprene bellows type expansion compensation. Base mounted pumps shall be provided with a suction diffuser or adequate straight pipe at the pump suction inlet and shall be mounted on a 6 inch thick concrete housekeeping pad. Suction diffuser shall be provided with floor support leg to keep weight from being transferred to pump. Each pump shall be provided with a variable frequency drive controlled by the building HVAC control system.

1.5.5.6 Hot Water Boilers

Boilers shall be natural gas fired, high efficiency, low NOx, condensing boilers, suitable for operation with the required glycol / water mixture and shall include factory installed safety and operating controls. Boilers shall be provided with a communication card allowing communication between the boiler control system and the facilities HVAC control system. The boiler shall be designed to prevent thermal shock at a return water temperature as low as 70 degrees F. The boiler system shall include a manual shut-down button in accordance with ASME CSD-1. Provide condensate neutralization kit. A minimum of two boilers each sized for 2/3 of total building load (existing + new addition) shall be provided.

1.5.5.7 Glycol Feed System

If a chilled water system is installed for the addition, it shall be provided with an automatic glycol feed system. The system shall include a minimum 50 gallon glycol / water tank, supply pump, controls and connecting piping. The system shall include level alarms for high level, low level, low low level. The glycol system controls shall monitor the pressure in the associated hydronic system and shall activate the pump upon a drop in pressure in the hydronic system. The glycol system controls shall interface with the building HVAC control system. Operation of the pump shall provide a warning input to the building HVAC controls system.

The building HVAC control system / Base UMCS shall monitor the level alarms. The new heating water system serving the addition shall be tied into the existing heating water system serving the existing building. The existing hot water heating system shall be drained entirely to allow for the tie-in to occur. All (both existing and new) hot water piping shall be flushed, cleaned, and filled with clean water/glycol with corrosion inhibitor. Th existing glycol feeder for the hot water system shall be re-used. Glycol solution shall be 40% propylene glycol for hot water system and 20% propylene glycol for chilled water system.

1.5.5.8 Air-Handling Units - Variable Volume

Air handling unit(s) used to provide heating and cooling shall be a variable air volume air handling unit with a chilled water cooling coil, heating water coil, a combination filter/mixing section, a supply fan section, an exhaust or return fan section, a heating coil access section, a cooling coil access section. Each unit shall be capable of supplying ventilation air at a rate equal to the minimum outside air required by

SECTION 01 86 10 Page 15Am #0005

ASHRAE 62.1. The speed of the supply fan shall be modulated by a variable frequency drive to maintain a minimum pressure in the air distribution system to ensure that space temperature setpoints are satisfied and that at least one VAV damper is in the 95-100% open position. An air flow station/controller shall be provided in the outside air duct to the air handling unit filter/mixing section to provide and maintain the minimum outside air requirements. The VAV box minimums shall be set to maintain the AHU minimum ventilation rate for a fully occupied facility. During unoccupied hours and warm-up mode, the mixed air dampers shall be positioned for 100 percent re-circulation. Each zone served by the AHU shall be served by a VAV terminal unit which modulates the quantity of primary air supplied to the zone with pressure independent controls, to maintain the temperature setpoint. When the damper in the VAV terminal unit closes to the minimum position, and the room temperature continues to drop, a control valve on those VAV terminal units with heating coils shall modulate open to maintain the room temperature setpoint. During the unoccupied and warm-up modes of the operation, the VAV terminal unit dampers shall be at minimum position, and the VAV terminal unit heating valves shall open as required.

1.5.5.9 Ductwork

Supply air duct systems for variable air volume systems upstream of VAV boxes shall be sized using the static regain method or the T-method and all replacement ducting shall be prefabricated round or oval. Supply air ducts from VAV air handling unit to VAV boxes shall be built to at least the external static pressure of the AHU and class A seal requirements as established by SMACNA. All other duct shall be built to low pressure classification (minimum of 2 inches) and class C seal requirements, and shall be sized using the equal friction method with 0.08 inches of water column per 100 feet for supply, return, and exhaust ducts and 0.05 inches of water column per 100 feet for transfer ducts. Ductwork shall be metal, except for fan connections, and shall be constructed in accordance with SMACNA Guidelines. Ductwork shall be run above the ceiling. Flexible ductwork shall never exceed 5 feet in length. Return air shall be ducted.

1.5.5.10 Variable-Air Volume Boxes/Terminals

VAV boxes shall be concealed above the ceiling of the controlled spaces and provide varying amounts of conditioned air in response to a space temperature sensor. VAV boxes serving rooms with exterior walls and/or roofs shall be equipped with a hydronic reheat coil with a two-way or three-way control valve as indicated elsewhere or required by the application. The minimum heating volume shall be a percentage in accordance with ASHRAE 90.1 requirements. Each VAV box shall have a discharge air temperature sensor. Provide a minimum of 3 duct diameters of straight, rigid duct immediately upstream of each VAV box.

1.5.5.11 Exhaust Fans

Exhaust fans shall be in-line centrifugal type. Care shall be taken to ensure that the noise level generated by exhaust fans is not transmitted to the interior of the building. Sone value of fans measured five feet from fan inlet shall be less than 20 Sones. Sound transmission data shall be submitted for approval and design shall indicate noise criteria on schedules.

SECTION 01 86 10 Page 16Am #0005

1.6 SEISMIC PROTECTION FOR MECHANICAL PIPING, DUCTWORK, AND EQUIPMENT

This section contains instructions and engineering requirements relating to the seismic protection design of mechanical piping, ductwork, and equipment. Structural bracing and mounting of mechanical piping, ductwork, and equipment shall be designed in accordance with UFC 1-200-01, UFC 3-310-04, UFGS Section 13 48 00 SEISMIC PROTECTION FOR MISCELLANEOUS EQUIPMENT, and UFGS Section 13 48 00.00 10 SEISMIC PROTECTION FOR

MECHANICAL EQUIPMENT.

1.6.1 Piping

Piping within the facility is required to have seismic restraints complying with UFC 1-200-01, and UFC 3-310-04.

1.6.2 Ductwork

Ductwork within the facility is required to have seismic restraints complying with UFC 1-200-01, and UFC 3-310-04.

1.6.3 Miscellaneous Equipment

Miscellaneous items which consist of a number of individual components built into an assembly by the manufacturers may require additional internal reinforcements to meet the requirements of UFC 1-200-01, UFC 3-310-04 and UFGS Section 13 48 00 SEISMIC PROTECTION FOR MISCELLANEOUS

EQUIPMENT.

1.7 THERMAL INSULATION OF MECHANICAL SYSTEMS

Insulation of hydronic water piping systems and equipment, and the insulation of the duct systems shall meet the more stringent of ASHRAE 90.1, 189.1 or UFGS Section 23 07 00 THERMAL INSULATION FOR MECHANICAL SYSTEMS. All hydronic water piping shall be insulated. Hydronic water piping shall be required to follow tabulated thicknesses. All heating and air conditioning supply and return ducts shall be insulated.

1.7.1 Insulation Covers

Provide reusable insulation covers at all check valves, control valves, strainers, filters, or any other piping component requiring access for routine maintenance. Exposed insulation upto six (6) feet above the finished floor shall be covered by an embossed aluminum metal jacket or PVC jacket. All piping with jacket shall be identified on the contractor's drawings.

1.8 HYDRONIC PIPING REQUIREMENTS

1.8.1 Piping Layout

All piping shall be pitched up in the direction of flow, shall be designed without pockets that would permit accumulation of air, and shall be provided with air vents at high points and drains at low points. Piping shall be routed in the space between the suspended ceiling and the floor/roof above.

1.8.2 Pipe Sizing

Pipe sizing friction loss shall be based on the following:

SECTION 01 86 10 Page 17Am #0005

Pipe Size Maximum Velocity Maximum Pressure Drop

Up to 2" 4.0 ft/sec 4.0 ft./100 LFt 2 1/2" to 6" 5.5 ft/sec 2.5 ft/100 LFt

1.8.3 Pipe Materials

All new heating or cooling water piping within the facility shall be black steel conforming to ASTM A53, Schedule 40 or copper as specified in UFGS Section 23 52 00 HEATING BOILERS or 23 64 26 CHILLED, CHILLED-HOT, AND CONDENSER WATER PIPING SYSTEMS. Piping shall be flushed, cleaned and filled with clean water/glycol solution with corrosion inhibitor. Refer to Section 1.5.5.7 above. Hot and chilled water piping shall be chemically treated in accordance with UFGS specification section 23 25 00.

1.8.4 Pipe Joints

New heating or cooling water pipe joints shall be of the following types:

a. Piping installed within the facility shall utilize threaded, brazed, or welded joints.

b. Connections to equipment shall utilize unions for pipe 2 inch and smaller and flanges for pipe 2 1/2 inch and larger.

1.8.5 Pipe Expansion

In runs of pipe 50 feet and longer, or in shorter runs where required, indicate on project drawings the location of all anchors, bends, loops, expansion joints and pipe guides to adequately limit and provide for pipe expansion. Do not use expansion joints in piping unless absolutely necessary and justified. Where expansion joints are used they shall be the bellows type. Slip joint type expansion joints shall not be used.

Anchors and guides shall be indicated on the project contractor's drawings and detailed for installation in the building structure provided.

1.8.6 Isolation Valves

Isolation valves shall be provided at each new piece of equipment served by the hydronic piping system and shall be provided in each connection to the hydronic system (i.e. supply and return.) Valves shall be manual and shall allow isolation of the equipment from the piping system in order to allow for repair or maintenance of the equipment without affecting the remainder of the hydronic system. As a minimum, isolation valves shall be provided for the chiller, pumps, heat exchanger, fan coil units and air handling unit.

1.9 INTERIOR GAS PIPING SYSTEM

The interior gas piping system shall extend from the outlet of the meter set and service regulator assembly to the point of connection of each gas utilization device. The aboveground gas piping system shall be steel, designed in accordance with NFPA 54 and shall meet the requirements of UFGS section 23 11 25 Facility Gas Piping.

1.9.1 Gas Pipe Sizing

Piping shall be sized in accordance with NFPA 54. Minimum interior gas

SECTION 01 86 10 Page 18Am #0005 pipe size shall be 3/4 in. Gas piping shall be shown on the Plumbing Drawings of the contractor's drawings.

1.9.2 Equipment Connections

The final connection to gas equipment shall be made with rigid metallic pipe and fittings or flexible connectors. Accessible gas shutoff valve, 6 in long full-size dirt leg, and coupling are required.

1.10 BUILDING TEMPERATURE CONTROL SYSTEM

The temperature controls (HVAC controls)system for the [*Am-5] entire [**Am-5] facility shall be direct digital controls (DDC) and shall be tied into and fully integrated with the existing Installation wide utility management and control system (UMCS). [*Am-5] An existing 36-STR single mode fiber line exists between Building 8130 and Building 9231 (Midfield Facility). There is an available strand for connection to the Installation-wide UMCS. Controls for the existing equipment are to be replaced as required to fully integrate into the existing Installation-wide system. Existing drawings which indicate the existing equipment have been provided. [**Am-5] System manufacturer shall be Siemens per the Justification and Approval authorization at USAFA.[*Am-5] <text deleted> [**Am-5] This system shall control all new [*Am-5] and existing [**Am-5] mechanical equipment, including air handlers, heating equipment, fans, pumps, and other specified equipment, directly without intervening electric, analog electronic, pneumatic or other [*Am-5] <text deleted> [**Am-5] controls. All controller enclosures shall be NEMA 4.

[*Am-5] Open protocol systems are required as far down in the system as the space temperature sensors when possible by UFC 3-410-01, UFGS section 23 09 00, and all companion sections. [**Am-5] Access to the building HVAC control system by the Base UMCS operator shall be seamless via the UMCS operator work station.

The complete system, including, but not limited to terminal unit controllers, global controllers and operator's terminals shall auto-restart, without operator intervention, on resumption of power after a power failure. Database stored in global controller memory shall be battery backed up for a minimum of 1 year. All other logic controllers shall utilize Electronically Erasable Programmable Read Only Memory (EEPROM) for all variable data storage.

The design of the control systems for the HVAC equipment shall be in accordance with UFC 3-410-02 Direct Digital Control for HVAC and Other Building Control Systems and UFC 4-010-01, DoD Minimum Antiterrorism Standards for Buildings.