Requirements_H36_HVAC.docx

Requirements

FOR

REPLACE HVAC – HANGAR 36

Selfridge Air National Guard Base, Michigan The contractor shall provide the replacement of multiple pieces of mechanical equipment that are identified in attached plans and schedule document. All the units shall meet or exceed the characteristics as identified. Contractor is responsible for all remaining work effort in order to provide an acceptable final product that meets these requirements. All work performed shall be conducted in accordance with all applicable state and federal laws, regulations, and codes, ANG policies and regulations as outlined below:

1. The requirements are:

a. Remove and dispose of existing HVAC units on the roof of hangar 36. See plansPlans for locations and equipment schedules. Both the air handling unit and condensing unit for RTU-1 shall be removed.

b. Remove AHU-1 that is on the west side of the building on the ground. Replace unit with the characteristics shown on the equipment list.

c. Provide and install new HVAC units per the attached equipment schedule. The units shall have the characteristics as listed in the equipment schedule

d. Any DDC that is currently connected to the existing units shall be reestablished with the new units.

e. The units shall be installed using the existing gas lines and electrical service that currently are serving the existing units. The gas regulators that serve the units shall be replaced to match the gas pressure required by the units.

f. All units shall have ID markers that match existing and reuse the same nomenclature.

g. Any modifications that need to be done to the existing roof curbs to facilitate the installation of the new units shall be the responsibility of the contractor. Water infiltration at roof curbs is not allowable.

h. Any units that do not have disconnects integral in the unit shall be supplied with new disconnects.

i. The new units shall be properly started up and prove operational in the presence of the Government.

j. All units shall meet ASHRAE 90.1 current efficiency standards.

k. Each HVAC unit being removed that contains R-22 refrigerant shall have the refrigerant removed from the units and placed in contractor supplied containers. The containers shall then be turned over to the government.

l. Replace existing air dryer in the east mechanical room.

i. Remove and dispose of existing air dryer.

ii. Provide new air dryer per the equipment schedule.

iii. It shall be floor mounted.

iv. Connect to existing air lines.

v. Ensure condensate is routed to the nearest floor drain or to the exterior.

vi. All electrical work required to run the air dryer shall be the responsibility of the contractor.

m. Install an air dryer in the west mechanical room next to the existing 15 HP air compressor.

i. Air Dryer shall be per the equipment schedule.

ii. It shall be floor mounted.

iii. Connect to existing air lines.

iv. Ensure condensate is routed to the nearest floor drain or to the exterior.

v. All electrical work required to run the air dryer shall be the responsibility of the contractor.

2. General Repair guidelines include, but are not limited to the following specifications and regulations:

a. APPLICABLE STANDARDS: Latest published versions shall be used.

b. Mechanical systems – ASHRAE and SMACNA Standards, Including ASHRAE 90.1.

c. National Electric Code, NFPA No. 70

d. National Electric Safety Code (ANSI C2).

e. National Fire Protection Association (NFPA 101) Life Safety Code.

f. International Building Code (IBC).

g. Uniform Federal Accessibility Standard (UFAS)

h. International Mechanical Code (IMS).

i. International Plumbing Code (IPC).

j. Applicable State, City and County codes and regulations.

k. ANG Design Policy -Tab D, ANG ETL 01-1, Jan 2003 (Revised March 2004)

l. Vision 2020 standards

m. Occupational Safety and Health Administration standards

n. Michigan Occupational Safety and Health Administration standards

3. Stamped drawings by a Professional Engineer (P.E.) or a Registered Architect (R.A.) are not required for this project.

4. Hardware and equipment shall be comprised of new products the manufacturer is currently manufacturing, have spare parts available for at least five years after completion of contract.

5. Operation and Maintenance Manuals shall be provided, to include (but not limited to) spare parts list, operator’s manual, and contractors’ contact information. Include 2 binders to contain all the information/ warranties and one electronic copy.

6. Warranty: Contractor shall provide a one year warranty on workmanship of the entire construction project in addition to any manufacturer’s warranty on materials installed. The contractor will provide any commercial warranty on materials or equipment included in the construction that exceeds this one-year, all-inclusive warranty. The commercial warranty will be issued to the Government.

7. Submittals: Material submittals shall be submitted, reviewed, and approved with proposal.

8. There will be a site visit, prior to award to allow for site investigation. Any site visits post award shall be coordinated with the Government.

9. Record drawings may be provided to the contractor as a courtesy at the discretion of the Government, but their accuracy is not guaranteed. The contractor shall do his own field investigations of the utilities and other items in the area and base his work accordingly. The Government assumes no responsibility for any conclusions or interpretations made by the Contractor based on the information made available by the Government. Nor does the Government assume responsibility for any understanding reached or representation made concerning conditions which can affect the work by any of its officers or agents before the execution of this contract, unless that understanding or representation is expressly stated in this contract. These record drawings bear no such representation or understanding.

10. Contractor shall conduct an intensive field survey of all existing conditions. The contractor should survey existing conditions and correlate their work requirements accordingly. Contractor shall verify all dimensions, calculations and code requirements for all elements of work. The contractor is ultimately responsible for constructability and providing a complete and usable product at the completion of the project.

11. The disturbance of Asbestos-Containing Building Material (ACBM) is not anticipated during this project. However, if suspected ACBM is encountered, work in the immediate vicinity must stop and the Contracting Officer (CO) notified. After consultation with base personnel, the CO will direct further action to be taken. Work should proceed uninterrupted in unaffected areas of the project.

12. Based on the age of the buildings at Selfridge ANG Base, the presence of lead on painted surfaces is a possibility. Proper procedures shall be followed to ensure safe working conditions.

13. Period of Performance shall be 90 calendar days from notice to proceed.

14. The contractor shall submit to the Contracting Officer a coordinated schedule indicating the sequence of operations for review prior to award. Currently base is open from Monday thru Friday 0700-1700 only. Any work outside these hours and on Federal Holidays must be requested at least 72 business hours in advance and then approved by the contracting officer. The federal holidays are listed below:

a. January 1st – New Year’s Day

b. Third Monday in January – Martin Luther King Jr. Day

c. Third Monday in February – Washington’s Birthday

d. Last Monday in May – Memorial Day

e. July 4th – Independence Day

f. First Monday In September – Labor Day

g. Second Monday in October – Columbus Day

h. November 11th – Veterans Day

i. Last Thursday in November – Thanksgiving Day

j. December 25th – Christmas Day

15. The facility will be occupied during this project. The Contractor shall fully cooperate with the other contractors and with Government employees and shall carefully adapt scheduling and performing the work under this contract to accommodate the additional work (of others), heeding any direction that may be provided by the Contracting Officer. The Contractor shall not commit or permit any act that will interfere with the performance of work by any other contractor or by Government employees.

16. Temporary utilities (power, HVAC, lighting, etc) will not be required to support building use and functions during this project.

17. Egress: Do not close or obstruct walkways, corridors, or other occupied facilities without written permission from the contracting officer.

18. Life Safety

a. When demolition occurs in or near an occupied space, measures must be taken to protect the indoor air quality, reduce noise, limit vibration from cutting or chopping, reduce odors emanating from demolition debris, and mitigate dust infiltration from airborne particles and foot traffic.

b. Use water mist, temporary enclosures, and other suitable methods to limit dust and dirt rising and scattering in the air. Do not use water when it may damage existing construction or create hazardous or objectionable conditions such as ice, flooding, and pollution. Remove decayed, vermin-infested, or otherwise dangerous or unsuitable materials, and promptly dispose of them off-site. Maintain adequate ventilation when using cutting torches.

c. Avoid unsightly conditions by cleaning adjacent structures and architectural finishes. Eliminate tractable dirt by wet-mopping floors and wiping down walls and doors of the demolition enclosure. Provide walk-off mats from the area of work to prevent dust from being tracked onto adjacent floor finishes. Do not use public corridors, lobbies, or hallways as staging areas. Damage to adjacent construction during demolition must be repaired and restored within 48 hours by the contractor.

19. Locate, identify, disconnect, and seal or cap off any utilities as necessitated by the project. Do not interrupt existing utilities serving occupied or operating facilities unless authorized in writing by the contracting officer. Arrange to shut off indicated utilities with respective providers. Provide at least 72 hours’ notice to the government if a shutdown of service is required during the changeover. Maintain services to remain and protect them against damage during the project.