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FBO DAILY - FEDBIZOPPS ISSUE OF JULY 13, 2013 FBO #4249
DOCUMENT

Z -- HVAC Corrections in Building 65 Little Rock Regional Office (VBA) - Attachment

Notice Date

7/11/2013
 

Notice Type

Attachment
 

NAICS

238220 — Plumbing, Heating, and Air-Conditioning Contractors
 

Contracting Office

Department of Veterans Affairs;Central Area Contracting Team (VBA);125 S. Main Street;Muskogee OK 74401
 

ZIP Code

74401
 

Solicitation Number

VA35013R0021
 

Response Due

8/26/2013
 

Archive Date

11/24/2013
 

Point of Contact

Kris Kelly
 

E-Mail Address

layer<br
 

Small Business Set-Aside

Service-Disabled Veteran-Owned Small Business
 

Description

PRE-SOLICITATION NOTICE CORRECTIONS TO BUILDING 65 HVAC DEPARTMENT OF VETERANS AFFAIRS LITTLE ROCK REGIONAL OFFICE GENERAL DESCRIPTION In accordance with FAR 5.207(a) (16), the following information is provided as a pre-solicitation notice for the work set forth herein. (1)N/A (2)N/A (3)N/A (4)N/A (5)N/A (6)1 (7)JB (8)Department of Veterans Affairs, Little Rock Regional Office, 2200 Fort Roots Drive, Little Rock AR 72114-1756 (9)N/A (10)This is a phased project consisting of 9 consecutive phases (the contractor will not demobilize between phases). The estimated period of performance is 180 calendar days from issuance of the notice to proceed (11)N/A (12)N/A (13)The Contractor shall provide all material, labor, equipment, personnel, facilities, transportation and supervision to construct HVAC Correction to Building 65 located at the Department of Veterans Affairs, Little Rock Regional Office. All work shall be completed in accordance with the contract plans and specifications and to the satisfaction of the Contracting Officer. The new system will condition the basement, first floor and second floor of Building 65. The system design will utilize existing four pipe chilled and hot water arrangements and new fan coil units. A portion of the attic space will be used for makeup air and exhaust air via a modular air to air energy recovery unit. The new system will use a new 72"x78" louver for outside air. Outside air will be ducted to the preconditioned outside air unit where it will be conditioned by the wheel and passed through the heating and cooling coils. The outside air will then be ducted down through chases and delivered to the space. The current Outside Air (OA) design was developed using ASHRAE guidance document 62.1. Existing fan coil units along with supply and return ductwork throughout the building, with some exceptions, will be demolished. The existing ductwork is internally lined. Because of age, the liner has become brittle and particles are being drawn into the air stream and discharged into the conditioned space. New fan coil units will be installed with hot water and chilled water coils, which will provide sufficient heating and cooling capacities to meet the desired internal conditions. The existing hot and chilled water piping will be reused and tied into the new fan coil units. Digital thermostat sending units connected to the Direct Digital Control (DDC) system will control the air and water flow to the coils (on/off); control points (normal and night/ weekend setback points) will be controlled at the DDC. In some instances, specifically remote end header units will have three way automatic control valves for modulating control with bypass. The supply and return ducts will be connected directly to the fan coil unit with proper flexible connections and duct fittings, which will eliminate vibration into the metal ductwork. Existing ductwork will be replaced. In conference room and storage rooms, specifically B110E, B110, B105A, the existing ducts will be abandoned in place. New D shape fabric duct system will be installed in rooms B102A, B105A, B110, B110E, 114, 121A, 211, 210, 216B, 201, 220D, 221B and 221D. Some areas that have been modified with new or demolished partitions will have new ducts supplying conditioned air to spaces which match planned zones for better control. Duct velocities and sound pressure levels will be maintained within VA design requirements. All sheet metal ductwork will meet recommendations of ASHRAE or SMACNA standards. Round flexible duct runs to diffusers shall be limited to three foot runs. Flexible ducts will have aluminum or galvanized steel helix core, inside liner, one inch thick insulation and vapor barrier jacket. All new duct systems, except conference room, file room and where noted otherwise will be above ceilings. One of the obvious deficiencies in the existing system is the absence of return air from most of the spaces. Return air is necessary for proper balance of the systems and for required ventilation and air changes. Return air grilles will be provided and ducted back to the fan coil unit. Building ventilation and exhaust trunk lines will be ducted up through new and existing chases into attic through new exhaust and supply fans that are part of the energy recovery unit. The ventilation and exhaust air requirements for the building will be accomplished with an Energy Recovery Unit (ERU) which contains a supply fan for outside air, an exhaust fan and energy recovery system that recovers sensible and latent heat. Also the ERU will be fitted with high efficiency 2", MERV 8 filters to protect the coils and the ERU. Hot water and chilled water to the coils will be located in the modular ERU unit. Hot water and chilled water to the coils will be controlled with a two way modulating control valve with various temperature sensing elements to maintain leaving conditions. The cooling water will be locked out when outside air is 55F or less. The heating coils will be locked out when outside air is at 70F or greater. Balancing dampers will be installed for each space requiring exhaust air to ensure that exhaust air requirements are as specified. New outside and exhaust air ducts will be installed in existing chases and new furred in corners in two existing closets per floor located in the corridor near each rest room. Existing outside air/ exhaust louvers not used in new work will be removed and blanked off with insulated sheet metal. Heating and cooling loads have been performed for all spaces considering ventilation air requirements, heat gain and losses, occupants along with lighting and equipment loads. New condensate lines will be liberally sized with proper slope and routed to near sanitary vents and drains. Cleanouts will be specified at the fan coil units and at all 90 degree turns. Minimum length natural drain condensate lines will be the preferred option. The mechanical room layout will remain the same with new in-line centrifugal chill and hot water pumps with installed, parallel spares provided. Distribution headers and piping for hot and chilled water will be reused. The existing computer room unit is not in the scope of work and will remain. Ceilings, partitions, walls, floors and doors damaged or altered during demolition and construction will be repaired or replaced as conditions warrant. There are no plans to modify or change fire water lines or systems. The existing lights will be tied up and reinstalled in place after the ductwork system is installed. Due to this being a highly occupied space, this project will need to be constructed in nine phases. Refer to phasing plan for additional information. Currently there is enough steam supply to meet peak heating demand for the building. Currently two steam converter control valves have a capacity of 450 lbs/hr of steam at 8 psig each. New peak design requirements are 735 lbs/hr at 8 psig total. There are no provisions for asbestos or lead paint abatement. Testing, adjusting and balancing of HVAC systems will be accomplished by an independent Associate Air Balance Council (AABC) or National Environmental Balancing Bureau certified TAB agency. Air Distribution, water distribution flows, layouts and sound measurements shall be tested, adjusted, balanced and certified by the TAB agency. The TAB agency will submit a certified TAB report for approval and records. The tab agency will not be affiliated with any company participating in any phase of the contract including design, equipment vendors or construction. Commissioning will be accomplished by Cromwell and Associates to ensure that all equipment, systems, controls are installed and meet all requirements of drawings, specifications and applicable standards. The magnitude of construction for this project is between $1,000,000 and $2,000,000. A firm-fixed price contract will be awarded as a result of the solicitation. Proposals will be evaluated on price and other price related factors, including construction management and past performance. Performance and Payment bonds are required to be submitted with a penal sum equal to the total award amount of the contract. The contractor shall be required to obtain and maintain certain forms and amounts of liability insurance under the contract. (14)N/A (15)N/A (16)The Department of Veterans Affairs will consider only those proposals submitted by responsible service-disabled veteran-owned small business concerns that are verifiable on the Center for Veterans Enterprise (CVE) Vendor Information Pages (VIP). To determine if you are verified, please see https://www.vip.vetbiz.gov/ (17)N/A (18)N/A (19)N/A
 

Web Link

FBO.gov Permalink
(https://www.fbo.gov/spg/VA/HouVARO/HouVARO362/VA35013R0021/listing.html)
 

Document(s)

Attachment
 

File Name: VA350-13-R-0021 VA350-13-R-0021.docx (https://www.vendorportal.ecms.va.gov/FBODocumentServer/DocumentServer.aspx?DocumentId=865184&FileName=VA350-13-R-0021-000.docx)

Link: https://www.vendorportal.ecms.va.gov/FBODocumentServer/DocumentServer.aspx?DocumentId=865184&FileName=VA350-13-R-0021-000.docx

 

Note: If links are broken, refer to Point of Contact above or contact the FBO Help Desk at 877-472-3779.
 

Place of Performance

Address: Department of Veterans Affairs;Little Rock Regional Office;2200 Fort Roots Drive;Little Rock AR 72114-1756

Zip Code: 74401
 

Record

SN03113683-W 20130713/130711235046-52bf50329dee300b8c4c4199b37371e7 (fbodaily.com)
 

Source

FedBizOpps Link to This Notice
(may not be valid after Archive Date)

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