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Page 2 of 19 Report No. NER-200 <br />By series the constants are - <br />Joist series <br />Joist <br />Depth <br />liin) <br />Vu <br />K <br />LI/Pro 150, TJI/Pro 150TS <br />S11 7/8 <br />1420 <br />14.2 <br />TJIMro 250, TJI/Pro 350, <br />TA Pro 120TS <br />S16 <br />1420 <br />14.2 <br />SAMro 25P, TAh45P, TJIIPro 35P <br />510 <br />990 <br />1 9.9 <br />TA/Pro 550. TAP.90, TJI1L65, <br />1!I4160, V111.90. TAM90 <br />S24 <br />1925 <br />19.25 <br />TNMre 3501; TJIA.6OP <br />524 <br />1420 <br />14.2 <br />TAfto SSOP, TJIA.90P, TJ1/H6OP, <br />TJIM9OP <br />524 <br />1575 <br />15.75 <br />XHAWX <br />524 <br />2S55 <br />25.55 <br />For SI: 1 inch - 25.4mm <br />For all other joist depths, the design shear is the calculrted <br />shear at the face of the interior support. <br />The allowable design shear of multiple span member joists up <br />to 12 inches (305 mm) deep used in residential floor <br />construction is permitted to be increased an additional 10 <br />percent. <br />For joists qualifying as repetitive members, the bending <br />resistance is permitted to be increased 4 percent for joists with <br />Microllam LVL and TmberSuand LSL flanges. <br />The top flange of TJI joists shall be laterally supported at least <br />every 24 inches (610 mm) except that 18 inches (457 mm) is <br />required for joists with flanges 2 inches (51 mm) and less in <br />width. The TJI joist ends shag be restrained to prevent <br />rollover. End restraint is normally provided by diaphragm <br />sheathing attached to the top flange and to an end wall or a <br />shear transfer panel capable of transferring a minimum force of <br />50 pounds per foot (730 Nhn) or the required shear forces due <br />to wind or seismic conditions. Blocking or crossbracing with <br />equivalent strength is permitted. <br />Bridging is not required in TJI floor and roof joist applications. <br />3.5 Ona-hour, Fire{as)sdve Roof-C68ing or Flow-Celing <br />Ratings are Assigned to the Following Constructions <br />(descriptive details for each assembly are noted <br />below and in Figure 4). <br />3.5.1 Assembly A: <br />A double wood floor consisting of a subfloor of <br />nominal 1 inch (25.4 mm) thick tongue -and -groove <br />sheathing or 32/16 span rated sheathing (Exposure <br />1). and a second layer of nominal 1 inch (25.4 mm) <br />thick tongue-ardgroove fvush flooring. Alternatively, <br />the finish flooring is permitted to be 40/20 span rated <br />sheathing (Exposure 1) or Type I Grade M-1 <br />particleboard not Less than 5/8 inch (15.9 mm) thick. <br />When used as a roof -ceiling assembly, a single layer <br />of square -edge span rated sheathing (Exposure 1). <br />complying with the applicable code is permitted to be <br />used for roof sheathing. <br />All butt joints of the floor or roof sheathing shall I <br />located over framing members. <br />2. TJI joists shall be installed in accordance with this <br />report with a maximum spacing of 48 inches 0220 <br />mm) on center. <br />3. The suspended ceiling shall consist of 5/8 inch (15.9 <br />mm) thick, 2 foot by 2 foot (610 mm x 610 mm) or <br />2 foot by 4 foot (610 mm x 1220 mml USG <br />FIRECODE AURATONEe laytin acoustical board <br />supported by an approved exposed fire -rated <br />suspension system attached to the bottom flange or <br />to cold -rolled channels spaced not over 48 inches <br />(1220 mm) on center. When joists are spaced <br />greater than 24 inches (610 mm) on center, framing <br />perpendicular to the joists shall be installed at 24 <br />inches IS 10 mm) on center to support the ceiling. <br />4. Installed over the acoustical board ceiling is minimum <br />1 inch (25.4 mm) thick, minimum 4 pcf (64 kg/m3) <br />Thermafibere Sound Attenuation Fire Blankets or <br />Fiberexe-FBX 1240 Industrial Boards or Fibuexe-IF <br />1240 Flex Batts. <br />Ught fixtures having a maximum sue of 2 feet by 4 <br />feet (610 mm by 1220 mm) are permitted to be <br />installed in the ceiling, provided the aggregate areas <br />of fumes do not exceed 12 square feet (1.1 m2) per <br />100 square feet 19.3 in') of ceiling area and tl <br />fixtures are protected as follows [using for illustratioi. <br />a 2 foot by 4 foot (610 mmby 1220 mm) fixturel: A <br />2-1/4 inch (57 mm) by 48 inch 0220 mm) by 1-1/4 <br />inch 131.7 mm) thick piece of minimum 4 pcf 164 <br />kg/m3) Thermafiber rigid mineral fiber board, Fiberex- <br />FBX 1240 Industrial Board, or Fiberex-IF 1240 Flex <br />Batt light fixture protection is laid along the long sides <br />of the fixture and against adjacent suspension <br />members; two pieces of the same insulation <br />measuring 19-1/2 inches 1495 mm) by 48 inches <br />(1220 mm) are laid over the top of the fixture and a <br />4-1/2 inch 014 mm) by 24 inch (610 mm) piece of <br />the same insulation is laid at each end and tied at the <br />corners of the fixture, to the top pieces with No. 18 <br />SWG steel wire (see Figure 5). In addition, ceiling <br />openings for arc difusers up to a maximum size of 12 <br />inches (305 mm) in diameter are permitted, provided <br />openings are protected with code complying fire <br />dampers and the aggregate areas do not exceed 113 <br />square inches 172,900 rrmtâ–ş per 100 square feet 19.3 <br />ml of ceiling area. The distance from the bottom of <br />the TJI joist to the soffit of the ceiling shall be at least <br />10 inches (254 mm). <br />3.5.2 Assembly 8 <br />The flooring shall consist of a single layer of 48/24 <br />tongue -and -groove span rated sheathing (Exposure 1 <br />When used as a roof -ceiling assembly, a single ayer <br />of square -edge span rated sheathing (Exposure 1). <br />complying with the applicable coda is permitted to be <br />used for roof sheathing. <br />