VA 09 69 00-2011 ACCESS FLOORING.pdf

1、11-11 09 69 00 - 1 SECTION 09 69 00 ACCESS FLOORING SPEC WRITER NOTES: 1. Delete between / - / if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. 2. Use stringer type construction in seismic zones or large floor areas 278m

2、 (over 3000 sq. ft.) or where floor height is more than 300 mm (12 inches) above sub-floor. 3. Where more than one type of access flooring system is required consider developing separate narrow scope sections for each. The most commonly used underfloor system consist of a welded steel casing filled

3、with lightweight concrete screwed down to an adjustable pedestal systems. For most office spaces, underfloor systems rated at 1000 to 1250 PSI concentrated load are adequate. For heavier traffic loads at loading docks, elevator entrances, and corridors underfloor systems rated at 1500 PSI are approp

4、riate. Underfloor systems rated at 2500 PSI are available for heavy equipment. 4. From the stand-point of static build-up, high pressure laminate is most desirable floor covering, followed by carpet. Wax build up on vinyl tile is a prime cause of static problems. PART 1 - GENERAL 1.1 DESCRIPTION Acc

5、ess flooring shall consist of a series of modular, removable, interchangeable panels on an elevated support system forming an accessible underfloor cavity to accommodate electrical and mechanical services. System shall be bolted filled formed or cast panels on stringerless understructure / gravity-h

6、eld panels on stringerless understructure / gravity-held panels on snap-on stringer understructure / gravity-held panels on bolted stringer understructure. / 1.2 RELATED WORK A. Color and texture of / conductive / vinyl tile, carpet, plastic laminate, vinyl edge strip, sealant, baked enamel and fiel

7、d paint: Section 09 06 00, SCHEDULE FOR FINISHES. SPEC WRITER NOTE: Verify with Mechanical for requirements of active underfloor fire suppression system and coordinate document requirements. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-11 09 69

8、 00 - 2 /B. Underfloor Fire Suppression System: Refer to Mechanical Contract documents. / B. Connection of access flooring systems to building ground: Section 26 05 26, GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS / Section 27 05 26, GROUNDING AND BONDING FOR COMMUNICATIONS SYSTEMS / Section 28 05 2

9、6, GROUNDING AND BONDING FOR ELECTRONIC SAFETY AND SECURITY. C. Electrical distribution components: Refer to Electrical Contract documents. 1.3 DESIGN CRITERIA A. Structural Performance per CISCA A/F: Provide access flooring systems capable of withstanding the following loads and stresses within lim

10、its and under conditions indicated, as determined by testing manufacturers current standard products according to referenced procedures in CISCA A/F, “Recommended Test Procedures for Access Floors“: 1. Ultimate-Load Performance: Provide access flooring systems capable of withstanding a minimum ultim

11、ate concentrated load equal to value obtained by multiplying specified concentrated floor panel design load by a factor of 2.5, without failing, according to CISCA A/F, Section II, “Ultimate Loading.“ Failure is defined as the point at which access flooring system will not take any additional load 2

12、. Rolling-Load Performance: Provide access flooring systems capable of withstanding rolling loads of the following magnitude applied to non-perforated panels, with a combination of local and overall deformation not to exceed 1.02 mm (0.040 inch) after exposure to rolling load over CISCA A/F Path A o

13、r B, whichever path produces the greatest top-surface deformation, according to CISCA A/F, Section III, “Rolling Loads.“ SPEC WRITER NOTE: Use below when only move-in rolling loads tested at 10 passes are anticipated. a. CISCA A/F Wheel 1 Rolling Load: / 2669 N (600 lbf) / 3559 N (800 lbf) / 4448 N

14、(1000 lbf) / 5338 N (1200 lbf). / SPEC WRITER NOTE: Use below when frequent rolling loads tested at 10,000 passes is anticipated. b. CISCA A/F Wheel 2 Rolling Load: / 2224 N (500 lbf) / 2669 N (600 lbf) / 3559 N (800 lbf) / 4448 N (1000 lbf). / Provided by IHSNot for ResaleNo reproduction or network

15、ing permitted without license from IHS-,-,-11-11 09 69 00 - 3 B. Pedestal Assembly: 1. Pedestal Axial-Load Performance: Provide pedestal assemblies, without panels or other supports in place, capable of withstanding a / 22. kN (5000 lbf) / axial load per pedestal, according to CISCA A/F, Section V,

16、“Pedestal Axial Load Test.“ 2. Pedestal Overturning-Moment Performance: Provide pedestal assemblies, without panels or other supports in place, capable of withstanding an overturning moment per pedestal of / 113 N x meters (1000 lbf x inches) / , according to CISCA A/F, Section VI, “Pedestal Overtur

17、ning Moment Test.“ 3. Provide a means of leveling and locking the assembly at a selected height which requires deliberate action to change height setting and which prevents vibrating displacement. 4. Height between the finish floor and underside of / panel / stringer /: a. Not less than _ mm (inches

18、). /B. Stringer: 1. Stringer Concentrated-Load Performance: Provide stringers, without panels in place, capable of withstanding a concentrated load of / 890 N (200 lbf) / at center of span with a permanent set not to exceed 0.25 mm (0.010 inch), as determined per CISCA A/F, Section IV, “Stringer Loa

19、d Testing.“ / C. Panels: 1. All panels shall be interchangeable except those altered to meet special conditions. SPEC WRITER NOTE: Concentrated load performance requirement is for filled formed steel panels and cast panels only. 2. Concentrated-Load Performance: Provide floor panels, including those

20、 with cutouts, capable of withstanding a concentrated design load of the following magnitude, with a top-surface deflection under load and a permanent set not to exceed, respectively, 2.03 and 0.25 mm (0.080 inch and 0.010 inch), according to CISCA A/F, Section I, Concentrated Loads.“ SPEC WRITER NO

21、TE: lbf=PSI for ratings. a. 4448 N (1000 lbf) / 5560 N (1250 lbf) / 5783 N (1300 lbf) / 6672 N (1500 lbf). / Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-11 09 69 00 - 4 SPEC WRITER NOTE: Use below when routine impact loading is anticipated. Th

22、is is not a CISCA tested characteristic. /3. Floor Panel Impact-Load Performance: Provide access flooring system capable of withstanding an impact load of / 334 N (75 lbf) / 445 N (100 lbf) / 566 N (125 lbf) / 667 N (150 lbf) / 778 N (175 lbf) / when dropped from 914 mm (36 inches) onto a 6.5-sq. cm

23、 (1-sq. in.) area located anywhere on panel, without failing. Failure is defined as collapse of access flooring system. / D. Installed access floor shall be level within plus or minus 1 in 2000 (0.060 inches in 10 feet), and plus or minus 2.5 mm (0.10 inches) over the entire area. Floor assembly to

24、be rigid, free of vibration, rocking panels, rattles and squeaks. SPEC WRITER NOTE: Use following subparagraph only when the air space below the finish floor is to serve as a plenum. /E. Leakage: Air leakage through the joints between panels and around the perimeter of the floor system not to exceed

25、 .057m3 (two cubic feet) of air per minute per linear 300 mm (foot) of joint subjected to 125 Pa (0.5 inch, water gage) positive pressure in the plenum. / E. Grounding: Components shall be in direct positive contact for safe continuous electrical grounding of the entire floor system. 1. Panel to Und

26、erstructure Resistance: Not more than 10 ohms. SPEC WRITER NOTE: For computer rooms, electronic offices, data centers and control rooms provide resistance within range of 0.5 to 20,000 megaohms. For clean rooms and laboratories provide resistance range of 0.2 to 2.0 megaohms. For hospitals the resis

27、tance range is 0.025 to 1.0 megaohms. F. Static Electricity Control: The acceptable resistance range is from not less than (_) megaohms minimum to not more than (_) megaohms maximum. Maximum electrical resistance shall be measured from the top of the panel to the grounded subfloor. Exposed metal wil

28、l not be allowed at the wearing surface of the floor. /G. Earthquake Load Performance: Provide access flooring capable of withstanding a lateral seismic force (Fp) in seismic zone applicable to this Project, according to requirements of _ (Insert applicable code). / Provided by IHSNot for ResaleNo r

29、eproduction or networking permitted without license from IHS-,-,-11-11 09 69 00 - 5 /H. Flame Spread Rating: Provide assembly flame spread of 25 or less using ASTM E-84 test method. / SPEC WRITER NOTE: Where elimination of interference from external radio signals, inductance caused by switching equi

30、pment, and electromagnetic effects of current flowing in wires is a design issue, specifying a reference grid may be a solution. Before specifying a reference grid or grounding system, obtain the advice of an engineer responsible for operation in establishing specification requirements to be referen

31、ced here. /I. Electromagnetic Shielding: 1. Radio frequency shielding. 2. Equipment inductance shielding. / 1.4 SUBMITTALS A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Samples: Full sized floor panel and each understructure component. C. Shop Drawings:

32、1. Floor panel layout, including railing, step and ramp location. 2. Detail components of assembly, anchoring methods and edge details, including cut-out details, method of grounding. D. Manufacturers Literature and Data: Access floor. E. Manufacturers Certificates: Flame spread rating. F. Floor Sys

33、tem Test Reports: Submit certified test reports, from a testing laboratory satisfactory to the Government, attesting that the floor system proposed for installation meets all specified requirements. Submit test reports with shop drawings. SPEC WRITER NOTE: 1. Make the referenced Applicable Publicati

34、ons agree with material requirements specified in Part 2. Update and specify only that which applies to the project. 2. The editor of this specification shall update publications to current issue at time of preparation of project specifications. Provided by IHSNot for ResaleNo reproduction or networ

35、king permitted without license from IHS-,-,-11-11 09 69 00 - 6 1.5 APPLICABLE PUBLICATIONS A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only. B. American Association of Textile Chemis

36、ts and Colorists (AATCC): 134-11 . Electrostatic Propensity of Carpets C. Architectural Aluminum Manufacturers Association (AAMA): 2604-10 High Performance Organic Coatings on Aluminum Extrusions and Panels. D. American Society for Testing and Materials (ASTM): E84-10 . Surface Burning Characteristi

37、cs of Building Materials E648-10 Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source F150-06 Electrical Resistance of Conductive and Static Resilient Flooring F1066-04(R2010) Vinyl Composition Floor Tile F1700-04(R2010) Solid Vinyl Tile E. National Association of Archi

38、tectural Metal Manufacturers (NAAMM): AMP 500 Series . Metal Finishes Manual F. National Electrical Manufacturers Association (NEMA): LD-3.1-05 Application, Fabrication, and Installation of High-Pressure Decorative Laminates G. Ceilings and Interior Systems Construction Association (CISCA): CISCA 20

39、04 . Recommended Test Procedures for Access Floors H. Underwriters Laboratory (UL): 9496(R2010) . Tests for Flammability of Plastic Materials for Parts in Devices and Appliances PART 2 - PRODUCTS SPEC WRITER NOTE: Make material requirements agree with applicable requirements specified in the referen

40、ced Applicable Publications. Update and specify only that which applies to the project. 2.1 FLOOR COVERING A. /Conductive / Vinyl Tile: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-11 09 69 00 - 7 1. Solid Vinyl Tile: ASTM F1700, Class 1 Type A

41、 (Smooth Surface), fabricated in one piece to cover panel face within plastic edging. Thickness: 2 mm (0.80 inch). 2. Vinyl Composition Tile: ASTM F1066, Class 1 (solid-color tile) / 2 (through-pattern tile) / 3 (surface-pattern tile) /, wearing Surface / Smooth / Embossed. / Thickness: 3.2 mm (0.12

42、5 inch). /3. Static-Conductive Floor Covering Surface-to-Ground Resistance: Not less than 25,000 ohms nor more than 1 megohm, as determined by testing identical products according to test method for conductive flooring specified in ASTM F150 but modified to place one electrode on floor surface and t

43、o attach the other electrode to understructure./ B. High Pressure Laminate /Conductive / Plastic Laminate: NEMA LD3, High-Wear type, Grade HWH except with a maximum dimensional change in machine direction of 0.35 percent / HDS / , fabricated in one piece to cover each panel face within perimeter pla

44、stic edging or with integral trim serving as edging. / Static decay of 5000 to 0 V in less than 0.5 seconds per FS 101C/4046 at 15 percent relative humidity. / C. Carpet: Carpet shall be nylon filament, loop pile, minimum /0.81/ / _ / kg per sq m / 24 / /_ / oz per sq yd, minimum density 135 4000, w

45、ithout cushion. Carpet shall have flame propagation index of less than 4.0 or conform to ASTM E 648 with minimum average critical radiant flux of 0.25 watts per sq cm. Static electricity propensity shall be less than 2.0 kV at 20 percent relative humidity and 21 degrees C (70 degrees) when tested in

46、 accordance wit AATCC 134. Provide vinyl edge trim to prevent unraveling. 2.2 FLOOR PANELS A. Construct panels to be uniform in face dimensions, within a tolerance of plus or minus 0.38 mm (0.015 inches) of required size and be square within a tolerance of plus or minus 0.38 mm (0.015 inches), and f

47、latness within a tolerance of plus or minus 0.5 mm (0.02 inches). Design individual floor panels to be easily placed and removed, without disturbing adjacent panels or understructure, by one person using a tool furnished by the access floor manufacturer. Panels shall be 600 mm by 600 mm (24 inches b

48、y 24 inches) / _ mm (inches) by _ mm (inches) / in size. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-11 09 69 00 - 8 B. Filled Formed-Steel Panels: Contractor option of panel construction described below: 1. Particleboard core panels not less than 25 mm (one inch) thick laminated to top and bottom face sheets of zinc-coated steel not less than 0.45 mm (0.0179 inches) thick. Enclose edges of core / with upturned, die formed edge of bottom sheet / with perimeter channel welded to top and bottom sheets. / The completed pa