Loren Data's SAM Daily™

SAMDAILY.US - ISSUE OF AUGUST 21, 2020 SAM #6840
MODIFICATION

J -- Fort Loudoun Lock HVAC Rehabilitation of Operations Building

Notice Date

8/19/2020 7:26:58 AM
 

Notice Type

Solicitation
 

NAICS

238220 — Plumbing, Heating, and Air-Conditioning Contractors
 

Contracting Office

US ARMY ENGINEER DISTRICT NASHVILLE NASHVILLE TN 37203-1070 USA
 

ZIP Code

37203-1070
 

Solicitation Number

W912P520Q0039
 

Response Due

9/14/2020 8:00:00 AM
 

Archive Date

09/29/2020
 

Point of Contact

Rob Holdsworth, Phone: 6157365538, Ray Kendrick, Phone: 6157367932, Fax: 6157367124
 

E-Mail Address

Robert.B.Holdsworth@usace.army.mil, ray.kendrick@usace.army.mil
(Robert.B.Holdsworth@usace.army.mil, ray.kendrick@usace.army.mil)
 

Small Business Set-Aside

SBA Total Small Business Set-Aside (FAR 19.5)
 

Description

The operations building at Fort Loudoun houses existing system(s) that do not provide adequate cooling, ventilation, or exhaust. The lack of air being exhausted contributes to the rise in temperature for the building along with the absence of cooling system. There is a lack of fresh air coming into the structure as well which violates ASHRAE 62.1 standards. This project will include the removal of existing exhaust fan systems, ductwork, and other misc. items. The heaters alongside the operations building lock will be left in place as is whether in working condition or not. Also, the mini-split system units that are being used by the project personnel will not be removed by the contractor. These units will remain in place, and they will be removed by the project personnel after the new system has been installed. The newly installed system will consist of one 5-ton packaged heat pump that will service the downstream side of the operations building, and one 6-ton packaged heat pump that will service the upstream side of the operations buildings. Each packaged heat pump will service approximately one half of the operations building, and they will be placed on the roof adjacent to the 3rd floor (El. 832.00) offices. The new system will require new ductwork for supply, return, and exhaust. The supply and return ductwork will be routed from the Roof Top Units (RTU) to the designated rooms to condition. New exhaust ductwork will be routed from the existing exhaust shafts to the large existing louver. Exhaust ductwork will be sized by the airflow required by ASHRAE 62.1 2019 Table 6-2 �Minimum Exhaust Rates� (50 cfm per bathroom). Inline exhaust fans will be installed in each of the new ductwork runs in order to have a more balanced system. The exact location of the fans must be at a location which allows ease of accessibility for maintenance. Exhaust fans will also be placed in each bathroom that will turn on when the lights turn on for personal relief. The outdoor fresh air rate must satisfy ASHRAE 62.1 2019 Table 6-1 �Minimum Ventilation Rates in Breathing Zone� (0.06 cfm/ft2), and this will be achieved by adding an economizer to the packaged heat pump. Since we will not be using the upstream louver as a fresh air intake, the contractor will cover the upstream louver without altering the external look of the building. Portions of the existing ductwork that will remain and be used alongside the new system will be so indicated on the contract drawings. Package units and outside ductwork shall be placed in such a way that it maintains the historical appearance of the building. The downstream rooftop has a 32 inch tall parapet wall. The parapet wall has a width of 12 inches, and the top of the railing is 42 inches. Ductwork will run along the wall over the edge of the roof and access the ventilation shaft on both the upstream and downstream units. For the downstream unit, the roof downspouts will have to be relocated towards the landside of the building. The upstream rooftop does not have a parapet wall. As a fall protection system, the contractor will install/construct a horizontal lifeline (HLL) that meets all EM 385-1-1 and OSHA requirements. This HLL will be used by the contractor while installing the packaged unit and ductwork on the upstream roof, and it will be left in place for the future use by the government. Contractor shall also construct a ladder on the upstream landside wall of the building which meets or exceeds EM 385-1-1, ANSI/American Ladder Institute (ALI) A14 series, and OSHA requirements. The ladder shall remain for future use by the Government. The new system will be tested with the Duct Air Leakage Test method (DALT) and the Testing and Balancing Procedures (TAB) as per the specifications. The contractor will perform all electrical, mechanical and structural, investigation, design, mitigation, and construction to complete the work.
 

Web Link

SAM.gov Permalink
(https://beta.sam.gov/opp/397f75001fab49be90e7241633a6cb8b/view)
 

Place of Performance

Address: Lenoir City, TN 37772, USA

Zip Code: 37772

Country: USA
 

Record

SN05764617-F 20200821/200819230156 (samdaily.us)
 

Source

SAM.gov Link to This Notice
(may not be valid after Archive Date)

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