C2F-am7_09_69_13.pdf

PHASE 2 - MAIN OPERATIONS 60140804P2

C2F COMPLEX

SECTION 09 69 13

RIGID GRID ACCESS FLOORING

08/10

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM A 780/A 780M (2009) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

CEILINGS & INTERIOR SYSTEMS CONSTRUCTION ASSOCIATION (CISCA)

CISCA Access Floors (2007) Recommended Test Procedures for Access Floors

ICC EVALUATION SERVICE, INC. (ICC-ES)

ICC-ES AC300 (2005) Acceptance Criteria for Access Floors

INTERNATIONAL CODE COUNCIL (ICC)

ICC IBC (2006) International Building Code

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

ANSI/NEMA LD 3 (2005) Standard for High-Pressure Decorative Laminates

U.S. DEPARTMENT OF DEFENSE (DOD)

UFC 3-310-04 (2007; Change 1) Seismic Design for Buildings

U.S. GREEN BUILDING COUNCIL (USGBC)

LEED (2007) V2.2 Second Edition Leadership in Energy and Environmental Design(tm) Green Building Rating System for New Construction (LEED-NC)

LEED Reference Guide (2007) LEED for New Construction Version

2.2 Reference Guide Third Edition

1.2 SYSTEM DESCRIPTION

Install access flooring at the location and elevation and in the arrangement shown on the drawings. The floor system shall be of the rigid grid stringer type, complete with all supplemental items, and be the

SECTION 09 69 13 Page 1

Amendment 0007 6/8/15 standard product of a manufacturer specializing in the manufacture of access flooring systems.

a. Provide for self-alignment of floor panels, adjustable pedestals and readily removable floor panels covered as specified.

b. Lateral stability of floor support system shall be independent of panels. Provide a finished assembly that is rigid and free of vibration, noises, and rocking panels. Provide bolted stringer system with equipotential plane grounding.

c. Submit Certificates for the complete Access Flooring System including, but not limited to the following:

1) Compliance with ICC-ES AC300. Submit design data substantiating compliance with International Building Code Acceptance Criteria for Access Floors.

2) Load-bearing capabilities of pedestals, floor panels, and pedestal adhesive resisting force.

3) Supporting independent laboratory test reports. For panel loads, test results include concentrated loads at center of panel, panel edge midpoint, ultimate loads and uniform loads.

4) Floor electrical characteristics.

5) Material requirements

6) An elevated floor system free of defects in materials, fabrication, finish, and installation, that will remain so for a period of not less than 10 years after completion.

d. Warrant that, upon notification by the Government, defective work will be immediately replaced with new work at no additional cost to the Government.

e. Submit manufacturer's descriptive data, catalog cuts, and installation instructions. Include in the data information about any design and production techniques, total system including all accessories and finish coatings of under-floor components, procedures and policies used to conserve energy, reduce material, improve waste management or incorporate green building/recycled products into the manufacturer of their components or products. Incliude cleaning and maintenance instructions. Systems which contain zinc electroplated anti-corrosion coatings are prohibited.

1.2.1 Allowable Tolerances

a. Floor Panel Flatness: Plus or minus 0.035 inches on diagonal on top of panel or underneath edge.

b. Floor Panel Length: Plus or minus 0.015 inch.

c. Floor Panel Squareness: Plus or minus 0.02 inch in panel length.

d. Finish Floor: Level within plus or minus 0.062 inch in 10 feet, and plus or minus 0.10 inch for entire floor.

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1.2.2 Floor Panels

Conduct floor panel testing in accordance with CISCA Access Floors. When tested as specified, make all deflection and deformation measurements at the point of load application on the top surface of the panel. Floor panels shall be capable of supporting the following loads at a minimum:

Type 1:

a. Concentrated load of 1000 pounds on one square inch, at any point on panel, without a top-surface deflection more than 0.10 inch, and a permanent set not to exceed 0.01 inch in any of the specified tests.

b. Uniform live load of 350 psf, without a top-surface deflection more than 0.04 inch, and a permanent set not to exceed 0.01 inch in any of the specified tests.

c. A rolling load of 600 pounds applied through hard rubber surfaced wheel 6 inch diameter by 2 inch wide for 10,000 cycles over the same path. Permanent set at conclusion of test shall not exceed 0.040 inch.

d. A rolling load of 1000 pounds applied through a 3 inch diameter by 1-13/16 inch wide caster for 10 cycles over the same path, without developing a local overall surface deformation greater than 0.04 inch.

In accordance with CISCA Access Floors, the permanent deformation limit under rolling load shall be satisfied in all of the specified tests.

e. An impact load of 150 pounds anywhere on the panel dropped from a height of 36 inches onto a 1 square inch area without failure of the system, according to CISCA Access Floors, Section 8 Drop Impact Load Test.

f. Ultimate Concentrated Load. Panels shall provide a safety factor of 2 times the specified concentrated load indicated above, when tested in accordance with CISCA Access Floors, Section 2 Ultimate Loading.

Type 2:

a. Concentrated load of 1250 pounds on one square inch, at any point on panel, without a top-surface deflection more than 0.10 inch, and a permanent set not to exceed 0.01 inch in any of the specified tests.

b. Uniform live load of 400 psf, without a top-surface deflection more than 0.04 inch, and a permanent set not to exceed 0.01 inch in any of the specified tests.

c. A rolling load of 800 pounds applied through hard rubber surfaced wheel 6 inch diameter by 2 inch wide for 10,000 cycles over the same path. Permanent set at conclusion of test shall not exceed

0.040 inch.

d. A rolling load of 12501000 pounds applied through a 3 inch diameter by 1-13/16 inch wide caster for 10 cycles over the same path, without developing a local overall surface deformation greater than 0.04 inch. In accordance with CISCA Access Floors, the permanent deformation limit under rolling load shall be satisfied in all of the specified test.

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e. An impact load of 150 pounds anywhere on the panel dropped from a height of 36 inches onto a 1 square inch area without failure of the system, according to CISCA Access Floors, Section 8 Drop Impact Load Test.

f. Ultimate Concentrated Load. Panels shall provide a safety factor of 2 times the specified concentrated load indicated above, when tested in accordance with CISCA Access Floors, Section 2 Ultimate Loading.

1.2.3 Stringers

Provide stringers capable of supporting a 450 pound concentrated load at midspan without permanent deformation in excess of 0.010 inch.

1.2.4 Pedestals

Pedestals shall be capable of supporting a 5000 pound axial load without permanent deformation. Type 1 and Type 2 height: 18 inches. Pedestals and their anchorage to the structure for Type 1 shall be able to resist a 140 pound ultimate lateral seismic load at the top of the pedestal in any direction. Pedestals and their anchorage to the structure for Type 2 shall be able to resist a 360 pound ultimate lateral seismic load at the top of the pedestal in any direction.

1.2.5 Bond Strength of Factory Installed Covering

Bond strength of floor covering shall be sufficient to permit handling of the panels by use of the panel lifting device, and to withstand moving caster loads up to 1000 pounds, without separation of the covering from the panel.

1.2.6 Seismic Calculations

1.2.6.1 Army Requirements

Submit calculations for special bracing to resist the effects of seismic or other forces in accordance with UFC 3-310-04, ICC IBC and ICC-ES AC300.

Submit design calculations which demonstrate that the proposed floor system meets requirements for seismic loading. Certified copies of test reports may be submitted in lieu of calculations.

1.2.7 Air Leakage

When the space below the finished floor is to be an air plenum, air leakage through the joints between panels and around the perimeter of the floor system, after carpet is installed, shall not exceed 0.1 cubic foot of air per minute per linear foot of joint subjected to 0.1 inch, water gauge, positive pressure in the plenum.

1.2.8 Grounding

Ground the access flooring system for safety hazard and static suppression. Provide positive contact between components for safe, continuous electrical grounding of entire floor system. Total system resistance from wearing surface of floor to building grounding electrode shall be within range of 0.5 to 20,000 megohms for Type 2 and 0.2 to 2.0 megohms for Type 1.

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1.2.8.1 Metal Floor Grilles

Exposed metal is not allowed at wearing surface of access floor system, except at metal grilles and registers. When grilles and metal registers are provided, insulate as required to provide same grounding resistance as wearing surface.Metal floor grilles shall be capable of the following performance:

a. All testing shall be conducted in accordance with CISCA Access Floors.

b. Concentrated load of 1000 pounds on 1 square inch. Permanent set at conclusion of test shall not exceed 0.01 inch.

c. Uniform live load of 250 psf. Permanent set at conclusion of test shall not exceed 0.01 inch.

d. A rolling load of 600 pounds for 10,000 cycles over the same path. Permanent set at conclusion of test shall not exceed 0.01 inch.

e. A rolling load of 1000 pounds for 10 cycles over the same path.

Permanent set at conclusion of test shall not exceed 0.01 inch.

f. An impact load of 100 pounds.

g. Ultimate Concentrated Load of 2000 pounds.

h. 2000 cubic feet per minute of air movement at 0.1 inches of water gage pressure.

1.2.8.2 Joint Resistance

Electrical joint resistance between individual stringer and pedestal junctions shall be less than 0.1 milliohms. Electrical resistance between stringers and floor panels, as mounted in normal use, shall be less than 3 ohms.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. LEED Coordinator review is required for submittals with an "L" designation.

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-02 Shop Drawings

Detailed Installation Drawings

SD-03 Product Data

Access Flooring System; L

For "L" LEED submittals, include recycled content product in accordance with LEED Reference Guide.

SD-04 Samples

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Floor Panels High Pressure Laminate Panel Support System Accessories

SD-05 Design Data

Compliance with ICC-ES AC300 Seismic Calculations

SD-06 Test Reports

Factory Tests Electrical Resistance Field Tests Seismic Special Inspection

SD-07 Certificates

Access Flooring System

SD-10 Operation and Maintenance Data

Operation and Maintenance Manuals

1.4 QUALITY ASSURANCE

Submit drawings showing location, details at floor perimeter, method of anchorage to structural subfloor, grounding, description of factory coating, installation height above structural floor, stairs, ramps, accessories and other details as specified. Take measurements from finished areas at site and submit Detailed Installation Drawings indicating:

a. Location of panels

b. Layout of supports, panels, and cutout locations

c. Stair, handrail, and ramp framing

d. Sizes and details of components

e. Lateral bracing

f. Typical cutout details

g. Gasketing, return air grilles, supply air registers, and perforated panels. Include air transfer capacity of grilles, registers and panels

h. Floor finishes

i. Location of connection to building grounding electrode

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery

Deliver materials to site in undamaged condition, in original containers or packages, complete with accessories and instructions. Label packages with

SECTION 09 69 13 Page 6 manufacturer's name and brand designations. Package materials covered by specific references bearing specification number, type and class as applicable.

1.5.2 Storage

Store all materials in original protective packaging in a safe, dry, and clean location. Store panels at temperatures between 40 and 90 degrees F, and between 20 and 70 percent humidity. Replace defective or damaged materials.

1.5.3 Handling

Materials shall be handled and protected in a manner to prevent damage during the entire construction period.

1.6 EXTRA MATERIALS

ARMY: Furnish spare floor panels, complete pedestal assemblies, and stringers at the rate of one for each 100 or fraction thereof required.

1.7 SUSTAINABLE DESIGN REQUIREMENTS

1.7.1 General

Work of this section may be subject to LEED criteria, documentation or verification.

1.7.2 Recycled Content

See Section 01 33 29 LEED DOCUMENTATION and 01 74 19 CONSTRUCTION AND DEMOLITION DEBRIS RECYCLING for LEED requirements.

PART 2 PRODUCTS

2.1 FLOOR PANELS

2.1.1 Floor System Drawings And Planar Quality

a. Submit Fabrication Drawings for elevated floor systems consisting of fabrication and assembly details to be performed in the factory.

b. Indicate on Location Drawings exact location of pedestals, ventilation openings, cable cutouts, and the panel installation pattern.

c. Provide Detail Drawings showing details of the pedestals, pedestal-floor interlocks, floor panels, panel edging, floor openings, floor opening edging, floor registers, floor grilles, cable cutout treatment, perimeter base, expansion joints, and peripheral support facilities.

d. Design and workmanship of the floor, as installed, shall be completely planar within plus or minus 0.060 inch in 10 feet, 0.100 inch for the entire floor, and 0.030 inch across panel joints.

e. Floor-panel joint-width tolerances shall be 0.008 inch as measured with a feeler gage at any point in any joint when the panels are in the pressure contact required in final installation and as long as the air leakage requirements above are met.

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2.1.2 Panel Construction

a. Base access floor system on a 24 by 24 inch square module providing minimum of 18 inch clearance for Type 1 and Type 2 between structural floor and bottom of finished floor. Fabricate so accurate job cutting and fitting may be done using standard sizes for perimeters and around columns.

b. Do not expose metal on finished top surface of panels. Provide cutouts and cutout closures to accommodate utility systems and equipment intercabling. Reinforce cutouts to meet design load requirements.

Provide extra support pedestals at each corner of cutout for cutout panels that do not meet specified design load requirements.

c. Panel design shall provide for convenient panel removal for underfloor servicing and for openings for new equipment. Use panels of uniform dimensions within specified tolerances. Permanently mark panels to indicate load rating and model number.

d. Machine square floor panels to within plus or minus 0.005 inch with edge straightness plus or minus 0.0025 inch. Tolerances apply to the panel before the plastic edging is applied.

2.1.2.1 Floor Panels (Composite Panels) Type 1 and Type 2 Raised Access Floor

a. Provide composite panels of die-formed steel construction totally enclosing the panel, including the top surface. The void spaces between the top sheet and the formed steel bottom sheet shall be completely filled with an incombustible cementitious or concrete material. Seal cut edges in accordance with manufacturer's recommendations or;

b. Provide lightweight concrete of lightweight structural concrete with either structural reinforcing or a die-formed, electro-galvanized steel bottom pan. All concrete surfaces, including those resulting from field cuts, shall be sealed with the manufacturer's standard sealer before covering the surfaces with other materials.

c. Gravity held panels with bolted stringer understructure: Fasten end of each stringer and mid-point of each 4 foot stringer positively to pedestal heads, using manufacturer's standard screws. Provide screws that are removable from top.

d. Grid supported panels shall be further tested by supporting them at two opposite edges and applying a 500-pound load at the center of a panel selected; the panel shall be similarly tested while supported at the other two edges. Weld failure at any point under this loading is not acceptable. This additional test shall be applied to one panel per 500 square feet of floor in the system, but in no case less than two panels. When any weld fails, the number of panels designated by the Contracting Officer shall be similarly tested; replace those panels that have a weld failure at no cost to the Government.

2.1.3 Floor Covering

Surface floor panels with materials firmly bonded in place with waterproof adhesive. The electrical resistance shall remain stable over the life

SECTION 09 69 13 Page 8 expectancy of the floor covering. Any anti-static agent used in the manufacturing process shall be an integral part of the material, not surface applied. Bolt heads or similar attachments shall not rise above the traffic surface.

2.1.3.1 High Pressure Laminate Floor Panels on Type 2 Raised Access Flooring (RAF-2)

a. Provide high pressure laminate surfacing conforming to ANSI/NEMA LD 3, Grade 120. Total system electrical resistance from the wearing surface of the floor to the ground connection shall be between 150,000 ohms and 20,000,000,000 ohms. All areas to be furnished with laminated floor panels, must be maintained at ambient temperature between 50 degrees and 90 degrees F and humidity level between 20% to 80% relative and shall remain within these ranges throughout installation and occupancy.

2.1.3.2 Linoleum Floor Panels on Type 2 Raised Access Flooring (RAF-4)

Linoleum as specified in Section 09 65 00 shall be factory applied one to one over floor panels Type 2 raised access.

2.1.3.3 Carpet Covered Floor Panels on Type 1 Raised Access Flooring (RAF-1)

Carpet surfacing shall be field installed over Type 1 Raised Access Floor.

Carpet shall be as specified in Section 09 68 00 CARPET, and on finish schedule.

2.1.4 Edge Strip

Edge panels with extruded vinyl edge strips secured in place with mechanical interlock or adhesive bond, or use replaceable type. Top of strip shall be approximately 1/8 inch wide, and flush with the floor surfacing. Metal edge strips exposed at finish floor surface will be rejected.

2.1.5 Lifting Device

Provide floor panel lifting device standard with the floor manufacturer.

2.2 PANEL SUPPORT SYSTEM

Design support system to allow for 360 degree clearance in laying out cable and cutouts for service to machines and so that panel and stringer together take up maximum of 2 inches.

2.2.1 Pedestals

Provide pedestals made of steel or aluminum or a combination thereof.

Ferrous materials shall have a factory-applied corrosion-resistant finish.

Provide pedestal base plates with a minimum of 16 square inches of bearing surface and a minimum of 1/8 inch thickness. Pedestal shafts shall be threaded to permit height adjustment within a range of approximately 2 inches, to permit overall floor adjustment within plus or minus 0.10 inch of the required elevation, and to permit leveling of the finished floor surface within 0.062 inch in 10 feet in all directions. Provide locking devices to positively lock the final pedestal vertical adjustments in place. Pedestal caps shall interlock with panels and/or stringers to preclude tilting or rocking of the panels.

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2.2.2 Stringers

Provide stringers of rolled steel or extruded aluminum, to interlock with the pedestal heads to prevent lateral movement. Provide stringers that can be added or removed after floor is in place.

2.3 FASCIA

Provide aluminum or steel fascia plates at open ends of floor, and elsewhere as required to enclose the free area under the raised floor.

Steel plates shall have a factory applied baked enamel finish. Finish on aluminum plates shall be standard with the floor system manufacturer.

Fascia plates shall be reinforced on the back, and supported using the manufacturer's standard lateral bracing at maximum 4 feet on center.

Provide trim, angles, and fasteners as required.

2.4 FACTORY TESTS

Factory test access flooring, using an independent laboratory, at the same position and maximum design elevation and in the same arrangement as shown on the drawings for installation so as to duplicate service conditions as much as possible.

2.4.1 Load Tests

Conduct floor panel, stringer, and pedestal testing in accordance with CISCA Access Floors.

2.4.2 Bond Strength of Covering

Support The test panel on pedestals and stringers as specified for the installed floor. Brace the supports as necessary to prevent sideways movement during the test. Impose a test load of 1000 pounds on the test assembly through a hard plastic caster 3 inches in diameter and 1 inch wide. Roll the caster completely across the center of the panel. The panel shall withstand 20 passes of the caster with no delamination or separation of the covering.

2.5 COLOR

Color shall be as indicated on the drawings. Color listed is not intended to limit the selection of equal colors from other manufacturers.

2.6 CUT OUTS

Provide cable cutouts finished with rigid polyvinylchloride or molded polypropylene edging to conform to the appearance level of the floor surface and to cover raw edges of the cutout panel. Extrusion shall be of a configuration to permit its effective and convenient use when new cable openings are required. Provide at least 24 feet of additional extrusion for future use.

a. Provide non-metallic adapter for openings less than 4 inches wide.

Where furniture power whips and telecommunication cable floor penetrations are required provide 4" brush grommets. Secure adapter adhesively in cutout to preclude removal from panel. Provide at least two adapters per 1000 square feet for future use.

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b. Openings larger than 4 inches wide shall use rigid polyvinylchloride or molded polypropylene edging. Perform cutting of panels, including cutouts, outside of the building.

c. When size of cutout reduces the performance requirement of panel, provide intermediate stringers adjacent to cutouts.

2.7 EDGE CLOSURE

Provide 1/16 inch aluminum closure plate and extruded aluminum nosing at exposed edge of floor. Back up the closure plates with aluminum or steel framing braced diagonally, or anchor at bottom to continuous angle.

PART 3 EXECUTION

3.1 INSTALLATION

Install the floor system in accordance with the manufacturer's instructions and with the approved detail drawings. Open ends of the floor, where the floor system does not abut wall or other construction, shall have positive anchorage and rigid support. Maintain areas to receive access flooring between 60 and 90 degrees F, and between 20 and 70 percent humidity for 24 hours prior to and during installation.

3.1.1 Preparation for Installation

Clear of all debris the area in which the floor system is to be installed.

Thoroughly clean structural floor surfaces and remove all dust. Install floor coatings, required for dust or vapor control, prior to installation of pedestals, only if the pedestal adhesive will not damage the coating.

If the coating and adhesive are not compatible, apply the coating after the pedestals have been installed and the adhesive has cured.

3.1.2 Pedestals

Pedestals shall be accurately spaced, and set plumb and in true alignment.

Set base plates in full and firm contact with the structural floor, and secured to the structural floor with steel expansion anchors.

3.1.3 Stringers

Interlock stringers with the pedestal caps to preclude lateral movement, spaced uniformly in parallel lines at the indicated elevation.

3.1.4 Auxiliary Framing

Provide auxiliary framing or pedestals around columns and other permanent construction, at sides of ramps, at open ends of the floor, and beneath panels that are substantially cut to accommodate utility systems. Use special framing for additional lateral support as shown on the approved detail drawings. Provide additional pedestals and stringers designed to specific heights and lengths to meet structural irregularities and design loads. Connect auxiliary framing to main framing.

3.1.5 Panels

Interlock panels with supports in a manner that will preclude lateral movement. Fasten perimeter panels, cutout panels, and panels adjoining columns, stairs, and ramps to the supporting components to form a rigid

SECTION 09 69 13 Page 11 boundary for the interior panels. Floors shall be level within the specified tolerances. Cut edges of as recommended by the panel manufacturer. composite panels shall be coated with a silicone rubber sealant or with an adhesive recommended by the panel manufacturer. Secure extruded vinyl edging in place at all cut edges of all panel cut-outs to prevent abrasion of cables. Where the space below the floor is a plenum, close cutouts for conduit and similar penetrations using self-extinguishing sponge rubber.

3.1.6 Fascia Plates

Cover exposed floor ends and exposed openings of ramps and stairs with steel closures, factory primed and two-coat baked enamel finish, in color as indicated.

3.1.7 Repair of Zinc Coating

Repair zinc coating that has been damaged, and cut edges of zinc-coated components and accessories, by the application of a galvanizing repair paint conforming to ASTM A 780/A 780M. Areas to be repaired shall be thoroughly cleaned prior to application of the paint.

3.2 FIELD TESTS

Submit certified copies of test reports from an approved testing laboratory, attesting that the proposed floor system components meet the performance requirements specified.

3.2.1 Acceptance Tests

Conduct acceptance tests after installation of floor system. Make at least one test for each 1000 square feet of floor area. Conduct tests in presence of Contracting Officer and representatives of manufacturer and installer.

3.3 CLEANING AND PROTECTION

3.3.1 Cleaning

Free of all debris the space below the completed floor. Before any traffic or other work on the completed raised floor is started, clean the completed floor in accordance with the floor covering manufacturer's instructions.

Do not permit seepage of cleaner between individual panels.

3.3.2 Protection

Protect traffic areas of raised floor systems with a covering of building paper, fiberboard, or other suitable material to prevent damage to the surface. Cover cutouts with material of sufficient strength to support the loads to be encountered. Place plywood or similar material on the floor to serve as runways for installation of heavy equipment not in excess of design load capacity. Maintain protection until the raised floor system is accepted.

3.3.3 Surplus Material Removal

Clean surfaces of the work, and adjacent surfaces soiled as a result of the work. Remove all installation equipment, surplus materials, and rubbish from the work site.

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3.4 OPERATION AND MAINTENANCE MANUALS

Submit maintenance instructions for proper care of the floor panel surface. When conductive flooring is specified, also submit maintenance instructions to identify special cleaning and maintenance requirements to maintain "conductivity" properties of the panel finish.

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