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E <br />� <br />� <br />National Evaluation Sea-vice, Inc. <br />52D3 Leesburg Pike, Suile 600, Falls Church, Virginia 22041-3407 <br />Phone:703/931-2787 Faz:703/931-6505 <br />websito: www.naleval.org <br />IM'ERNATIONAL <br />CODECOINCIL� <br />NATIONAL EVALUATION REPORT Report No. NER-392 <br />Copy�ight0200L Nafional Evn/untion Service, Inc. Re-Issued JunB 1. 2001 <br />FR•SYSTEM 1TM� FR•SYSTEM 2'" AND FR SYSTEM 3'" <br />FIRE-RESISTANCE-RATED FLOOR•CEILING AND <br />ROOF•CEILING ASSEMBLIES WITH WOOD TRUSSES <br />WOOD TRUSS COUNCIL OF AMERICA <br />ONE WTCA CENTER <br />6300 ENTERPRISE LANE <br />MAOISON, WI 53719 <br />1.0 SUBJECT <br />FR-SYSTEM 1'"', FR-SYSTEM 2'" nnd FR-SYSTEM 3"', <br />Fire-resislance-rated Floor-Ceiling and Roof-Ceiling Assem- <br />blies with Wood Trusses. <br />2.0 PROPERTY FOR WHICH EVALUATION IS SOUGH'i <br />Fire Resis�ance. <br />3.0 DESCRIPTION <br />The FR-System Ooor-ceiling and roo4ceiling assemblies <br />have been lesled in accordance with ASTM E 119. The <br />assemblies are conslructed of the following materials: <br />3.1 WOOD•BASED SHEATHING <br />Sheathing shall he APA•Rated Shealhing or SWrd-I-Floor <br />and shall be Exposure t. <br />3.2 WJOD TRUSSES <br />Trusses shall be fabncaled using nominal 2�3 or larger <br />lumber, orienled eilhcr horizont211y(Figures 7a, 2a and 3a) <br />or vertically (Figures 1 b, 2b anA 3b). Truss members shall <br />be connected with galvanized steel truss olates, minimum <br />No. 20 gage (MSG) [0.036 inch (0.91 mm)J, with :�ie•inch <br />(7.9 mm) or longer teeth projectiny perpondicular lo Ihe <br />plane of the plate. Truss bnttom chord splices shall be <br />connected with galvanized steel lruss plales, minimum No. <br />16 �,'3G [0.058 inch (1.47 mm)�, wilh snr-inch (7.9 mm) or <br />lonc�er leeth projecfing perpendicular to Ihe plane of Ihe <br />plale. Additionally, lruss plates shall have a current Nalional <br />Evalua�ion Service, Inc. (NES) evalualion report. Truss <br />designs for parallebchard and sloped Vusses used in Ihese <br />assemblies shall be approved by Ihe building o(ficial. <br />Sluped trusses are irusses wilh non-parallet chords, <br />including Iriangular Irusses. Trusses shall be in compliance <br />with lhe special inspection requirements for wood Irusses <br />indic�ited in the applicable code. <br />3.3 WALLBOARD EOGE BLOCKING <br />FR-Quik Channel Sets'" and Bond Washers'" (f igures 4a <br />and 4b) ara manuf. clured byAlpine Engineered �roducis, <br />Inc, using minimum No. 28 MSG j0.016 inch (0.11 mm)] <br />gatvanized steel with minimum 33,000 psi (227 MPa) yield <br />sirenglh. Channels arc 1 va inchos (31.7 mm) by sre inch <br />(15.9 mm), wilh sleeve ends pertnilting channels to move <br />lenglhwise. Washers are 1 va inches (31J mm) in diame- <br />ter, with a center hole formed lo match ihe bu91e-head <br />drywall screws, and wilh smaller holes surrounding Iha <br />centerhole for finish compound adhesion to ihe wallboard. <br />3.4 INSULATION <br />Insulation, as permitled in Section 4.0 of ihis report, shall <br />be c�lass fiber or rock wooL Flame-spread rating shall be 25 <br />or less when �esled in accordance with ASTM E84. <br />3.5 VAPOR BARRIER <br />A vapor barrier, such as polyelhylene lilm or foll-back <br />91r�um wallboard, is permilted lo bo added lo any <br />assembly. <br />3.6 GYPSUM WALLBOARD <br />Gypsum wallboard shall6e identified as meeting ASTM C36. <br />4.0 INSTALLATION <br />4.1 GENERAL <br />The manufacWrers published installation inslructions and <br />this report shall be adhered to and a copy of these instruc- <br />lions and Ihis evaluation report shall be available on the <br />jobsile at all times during ihe installation. This evalualion <br />report shall goaorn over Ihe manufaclurer's published <br />inslallation instruclions. <br />4.2 FIRE•RESISTANCE-RATEDASSEMBLIES <br />The following assemblies have been lested in acwrdance <br />wilh ASTM E 719 and are classified as follows: <br />4.2.t One-hourFlre-resistance•ratedFloor•cellingand <br />Roof-celling Assem6ly. FR-SYSTEM 1 TM <br />4.2.1.7 Subfloor and Roof Shealhing: Sheathing shall be <br />minimum zaa2 inch (18.3 mm) Ihick wilh tongue-andt�roove <br />long edges. Long edges shall be installed parpendicular to <br />lrusses. AFG-01 construction adhesive shall be applied as <br />aie-inch-diameter (9.5 mm) bead to the top chord of the <br />trusses and ihe grooved edges of ihe panels. The sheath- <br />ing is (astened to ihe truss chord using 6d defortned shank <br />nails or 8d common nails, spaced 6 inches (152 mm) on <br />cenlar al panel ends and 10 inches (254 mm) on center in <br />the field. <br />Allernately, wilh minimum ya-inch-thick (19.1 mm) light- <br />weight concrete or floor topping mixlure, sheathing is <br />permitled to be minimum isiax inch (15.1 mm) Ihick, if <br />allowed by Ihe finish floor manufacturers spec�cations. <br />77ii�� rrp.rtt ir firuiltA /n tNr.�prcifir prwlnr! nnrlAarn nndlrv rrprrr7s >nhruimvf h1' Nir appinnnl iu i/s ry�pfirmion requeqin,C �his rc/ron. :Vu irtdrnmdrnt <br />fe�rt irri^ prNrnurAhr Mr �\'ntionn! Ec��Garrinn Srn•itr. l�m b\'f:S6 mvl ,\'ES sprciJiadh A�xs nnl imAv nny nnrnrnn, rirhrr c�nrc�:crd or impliM. n.s (n <br />ar�cJinAivg nr orhtr nmurr in ihir rcpnn or ns lo nm� pn.vLin rmrrnf !q' rhis rrporr. Aiis dii��lnirnrr inrludr.c. hu! i� rtnt (imilM m. m�rchnnrnhi(ip•. 7his <br />rrpor� is nlru anbjert In d�r lirnilnlinn frqM lterrin. � <br />Page 1 of 4 <br />