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  Nashville Hangar, Inc.Nashville Hangar, Inc.

Architect

J&S Construction Co., Inc.
1843 Foreman Drive, Cookeville, TN 38501
www.jsconstruction.com

General Description

Location: MNAA Airport Nashville, Tennessee
Date Bid: Nov 2008 Construction Period: Feb 2009 to Oct 2009
Total Square Feet: 28,702 Site: 2.79 acres.
Number of Buildings: Four.
Building Size: Garage, 1,609; first floor, 23,877; second floor, 3,216; total, 28,702 square feet.
Building Height: Garage, 12’; hangar, 34’7”; office space, 23’6” ; total, 34’7”.
Basic Construction Type: New.
Foundation: Reinforced concrete, slab-on-grade.
Exterior Walls: Metal wall panels. Roof: Metal. Floors: Concrete.
Interior Walls: Metal stud drywall.

Construction Team

Architect & Structural Engineer: Michael Brady Inc. - 299 N. Weisgarber Road, Knoxville, TN 37919
MEP Engineer: CHC Mechanical Contractors in association with Kelso-Regen
CHC Mechanical Contractors - 347 East Stevens Street, Cookeville, TN 38501
Kelso-Regen - 201 Sherlake Lane, #101, Knoxville, TN 37922
Civil Engineer: Clinton Engineering - 380 South Lowe Avenue, #6, Cookeville, TN 38501
Fire Protection: TKO Fire Protection - P. O. Box 1908, Mt. Juliet, TN 37121


At J&S Construction Company, Inc., located in Cookeville, Tenn., full accountability is expected. Through the knowledgeable pursuit of design quality, and by effectively managing costs and schedule, J&S makes certain the journey from concept to completion is more efficiently controlled for the client.

TEAM-Build is an integrated method of project delivery that J&S has pioneered in which one company, the design-builder, forms a single contract with the client to provide for architectural and engineering design services, as well as construction services. As a result, the client has no third or fourth-party dealings. J&S’ design-build concept is based on a TEAM approach (Together, Engineers, Architects, Managers).

J&S led this TEAM-build group, consisting of Michael Brady Architecture Inc., CHC Mechanical and Clinton Engineering, on this 24,000-square-foot airplane hangar designed for two internationally famous music stars at the Nashville International Airport. The project included a 16,000-square-foot hangar, office space, maintenance garage, kitchen, site work, parking, storage, bunk rooms and a fuel farm.

Budget was a major factor in this client’s decision to use J&S’ TEAM-build approach to construction. In the preliminary design phase, J&S worked closely with Michael Brady Architecture to ensure the budget was going to be met. As Michael Brady Architecture made the design decisions, J&S completed conceptual estimating and provided suggestions to secure all constructability issues were addressed in the preliminary design of the building. This estimating guaranteed the owner’s budget was not only met, but reduced by more than 20 percent.

Once construction began, the act of maintaining an aggressive schedule was an important goal to the owner. J&S was able to meet this aggressive construction schedule by using the processes they have in place for all projects.

J&S worked closely alongside CHC Mechanical to design and construct a unique high efficiency radiant floor heating system. Radiant heating systems involve supplying heat directly to the floor or to panels in the wall or ceiling of a building. The systems depend largely on radiant heat transfer: the delivery of heat directly from the hot surface to the people and objects in the room via the radiation of heat, which is also called infrared radiation. Radiant heating is the effect you experience when you can feel the warmth of a hot stovetop element from across the room. When radiant heating is located in the floor, it is often called radiant floor heating or simply floor heating. The high ceiling height and large open area of the hangar bay made it a perfect candidate for a high efficiency radiant floor heating system. The radiant floor heating system is a low-temperature system that uses the concrete floor slab as a radiator to deliver heat at the floor level. This system is designed to heat the occupants and objects in the space directly, and not the air in the space as a forced air system does, potentially providing significant energy savings over forced air systems.

The radiant floor system heats the floor slab by distributing heated water to the floor slab through a series of cross linked polyethylene (PEX) piping loops embedded in the slab. The PEX loops are in turn connected to one or more distribution manifolds above the slab. A high efficiency hot water boiler and circulation pump are used to heat the water and distribute it to the manifolds. Water distribution to each manifold is controlled using smaller zone pumps to provide additional zoning and temperature control based on occupant needs. Utilizing this system for the hangar bay allowed J&S to provide a heating system that is not only energy-efficient, but is quiet, with minimal mechanical equipment in the occupied space.

When building a new facility, deciding who to trust to deliver a new project is a challenge that many face. Many contractors will say they are a design-build firm and show much experience on their resumes. Not many can say they have been practicing this process since 1980. Many contractors will also show a list of projects they have completed. How many of these projects were actually completed with the design-build approach to construction?
 

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