Tate’s underfloor service distribution system with access floor, underfloor air, wire and cabling, and PosiTile® carpet greatly contribute to the LEED Scorecard of a project striving for certification. The Tate solution can help to achieve prerequisites and accumulate points in the following categories and credit areas of LEED-NC Version 3.0.
Energy & Atmosphere
EA Prerequisite 2: Minimum Energy Performance
Underfloor air delivery (UFAD) systems used in conjunction with access floors reduce energy use below the energy consumption of comparative overhead systems by (1) reducing the amount of fanpower required, (2) using higher-temperature supply air for cooling, (3) using a greater amount of "free" outside air for cooling and (4) delivering conditioned air to occupants rather than to the entire volume of space.
EA Credit 1: Optimize Energy Performance
- 1. Fan Power Savings
- 2. Higher Air Supply Temperature for Cooling
- 3. Free Cool Air from Outside
- 4. Reduced Air Volume Requirement
Materials & Resources (MR)
MR Credit 1.2: Building Reuse – Maintain Interior nonstructural elements
A Tate floor will last the lifetime of a building and accommodate a variety of future occupant requirements. Although an access floor will not help a LEED-NC project to achieve Building Reuse credits immediately, it can significantly help to do so later in the building’s life. Walls on access floors are easy to detach and erect elsewhere (walls are attached to floors by framing fasteners). In-floor air diffusers and electrical boxes are moved by simply relocating the floor panels that they are mounted in. Additional floor panels and understructure components can be purchased to complete new occupant fit-out requirements.
MR Credit 2: Construction Waste Management
Although an access floor does not directly influence this point, it can help contribute to meeting the requirement as a long term sustainability strategy. Raised floor tend to produce minimal construction was as only a few tiles need to be trimmed or have penetrations installed on-site. Modular power and data wiring used in conjunction with an access floor allows for technology infrastructure to be installed with virtually no waste, as well as allowing for a faster build Tate access floors are 100% re-useable, eliminating waste on future configurations.
MR Credit 3: Materials Reuse
Access floor panels, pedestals and stringers can be uninstalled in their original locations and be reused in other buildings. Be aware that just as with the Building Reuse credit, the materials reuse strategy will not likely help to achieve LEED-NC points immediately. Rather, it is a long term sustainability strategy that an access floor can contribute towards in the long-term.
MR Credit 4: Recycled Content
The typical Tate floor system used in commercial offices contains 51.6% recycled material consisting of 18.4% post-consumer and 33.2% pre-consumer content. All office floor systems and data center systems manufactured by Tate Access Floors contain recycled content in excess of the 20% (post-consumer + 1/2 pre-consumer) credit requirement.
Recycled Material Contents Analysis:
- Recycled Content-MR Credit 4 ConCore (xls)
- Recycled Content-MR Credit 4 All Steel (xls)
- Recycled Content-MR Credit 4 Woodcore (xls)
MR Credit 5: Regional Materials
Tate access floor systems are manufactured entirely in York County, Pennsylvania. The steel used for panels components are recovered/manufactured in Huger, SC and Calvert, AL. The steel used for understructure components are recovered/manufactured in Delta, Ohio. The cement materials used to fill the panels is recovered from Fleetwood, Pennsylvania.
- Location Map – U.S.
- Location Map – Canada
- Waterway Shipping Distance Map
- Waterway Shipping Distance Spreadsheet
- Freight Train Shipping Distance Map
- Freight Train Shipping Distance Spreadsheet
Indoor Environmental Quality (EQ)
IEQ Prerequisite 1: Minimum Indoor Air Quality Performance
By using an UFAD system in conjunction with a Tate access floor, the volumes of fresh air delivered to the breathing level of occupied spaces will easily comply with the minimum ventilation requirements of the IAQ prerequisite and the ASHRAE Standard.
IEQ Credit 2: Increased Ventilation
A UFAD system may alone qualify the building for the Increased Ventilation credit. The key to exceeding the ASHRAE rate by 30% is to provide higher rates of outdoor air to the breathing level of the occupied spaces. A UFAD system does exactly that. It delivers fresh air from below directly to occupants’ six-foot breathing zone. As the fresh air enters the zone it replaces existing contaminated air (rather than diluting it). Pollutants and stale air in the zone are carried to the ceiling by natural convection, where they are removed through return outlets.
IEQ Credit 3.1: Construction IAQ Management Plan – During Construction
A Tate Access Floor system with Underfloor Air Distribution (UFAD) may contribute to this credit by eliminating a majority of overhead ductwork, producing significantly less construction waste and dust when compared with traditional overhead systems.
IEQ Credit 4.1: Low-Emitting Materials - Adhesives & Sealants
The Tate floor system utilizes adhesives for adhering pedestals to the building floor which are in compliance with South Coast Air Quality Management District Rule #1168.
- AIM 382 Pedestal Adhesive – LEED-NC V3.0 Credit Compliance (PDF)
- Seal Bond 95 Pedestal Adhesive – LEED-NC V3.0 Credit Compliance (PDF)
IEQ Credit 4.2: Low Emitting Materials – Paints and Coatings
Tate’s panel paint is applied and cured at the factory. The VOC content of our panel paint is less than the content limit stipulated by EQ Credit 4.2.
IEQ Credit 4.3: Low-Emitting Materials – Flooring Systems
PosiTile carpet tiles manufactured for Tate floor panels are installed without field applied adhesive, ensuring compliance with the required VOC limit of 50 g/L. Each carpet tile is held in place by positioning buttons on its underside which fit into holes in the floor panel. Carpet tile and adhesive product data verifying compliance with credit requirements are available from PosiTile carpet suppliers.
IEQ Credit 6.2: Controllability of Systems – Thermal Comfort
By locating diffusers in an access floor, occupants gain control over volume and direction of airflow. Since this LEED point is so difficult to achieve without the use of an UFAD system, the LEED-NC V2.2 Reference Guide actually suggests using floor diffusers as a potential technology/strategy toward achieving this credit. Providing adjustable floor air diffusers to serve just 50% of regular occupants contributes toward achieving this credit. And further, occupant control is easily maintained when layouts change because floor panels with diffusers are easily relocated.
IEQ Credit 7.1: Thermal Comfort
Thermal comfort is enhanced by several major benefits of UFAD:
- Efficient Heat Removal
- Air Velocity & Cold Spot Reduction
- Comfortable Proximity
- Occupant Control
IEQ Credit 7.2: Thermal Comfort – Verification
The use of an UFAD system with an access floor can aid fulfillment of credit compliance by helping to avoid the need for corrective action. Taking into account the thermal comfort enhancements described above, having underfloor air delivery increases the probability that 80% of occupants will be satisfied; thereby lessening the possibility that corrective action will be required.
IEQ Credit 8.1 & 8.2 Daylight & Views
An obvious strategy to maximize daylight and views is to increase window area and height. Integration of access floors with UFAD and underfloor cable distribution facilitates this by reducing the ceiling cavity space allocated for supply ductwork and cables, thereby allowing the ceiling to be raised and window heights to increase without increasing building's height. For each building level with an access floor and UFAD system, as much as one foot of space between floor floors can be gained by eliminating two feet in the ceiling cavity and allocating just one foot for an access floor.
Innovation in Design (ID)
In addition, several major benefits of access floor and underfloor service distribution technologies not addressed by the LEED rating system provide opportunities to pursue points for Innovation in Design. We have drafted five ID credits to provide design teams and projects the opportunity to be awarded points for innovative performance in areas not specifically addressed by the LEED Rating System:
- ID Credit 1.1 Power Distribution Systems: Reduction of Materials and Waste
- ID Credit 1.2 Voice and Data Distribution Systems: Reduction of Materials and Waste
- ID Credit 1.3 Building Materials: Reduce Building Height and Construction Materials
- ID Credit 1.4 Elimination of Carpet Waste
- ID Credit 1.5 Elimination of Suspended Ceilings