6623 EVERGREEN WAY UNION BANK 2018-10-12

Page 3 of'27 PFC-4354 lumber.Microllam LVL and TimberStrand LSL are recognized accordance with Part 4.3.4 of the NDS,the allowable parallel- in ER-4979. Stress-graded structural lumber is graded as to-grain tension and compression chord stresses noted in either A(1.8E),AA(2.OE),or AAA(2.2E)in accordance with Tables 3 and 4 are permitted to be increased 7 percent for the approved quality control manual that includes the Trus sawn lumber and 4 percent for Microllam LVL or Joist manufacturing standards. MSR lumber is graded as TimberStrand LSL chords. either2100F-1.8E,240OF-2.OE,or270OF-2.2E in accordance 2.2.3.7 Deflection: For uniformly loaded simple-span with grading rules specified in the approved quality control applications,deflection is calculated as follows: manual that includes the Trus Joist manufacturing standards. Lumber species are Douglas fir—larch,southern pine,hem-fir, 22.5 WL4 spruce-pine-fir,or Englemann spruce/lodgepole pine. A= Chords having glued finger joints are manufactured and EI tension-tested in accordance with the approved quality control where: manual that includes the Trus Joist manufacturing standards, El = Truss stiffness in the table below(Ib.-in?). to form continuous chord members. 2.2.2.2 Webs: Webs are cold-formed steel tubes OPEN-WEB CHORD DEPTH EI(lb.-in?) conforming to ASTM A 500, Grade B, with the exceptions TRUSS SERIES (in.) noted in the approved Trus Joist Open-Web Truss TJL 1.5 5.00 x 106d' manufacturing standard.The electrically welded steel tubing TJLX 1.5 5.26 x 10`d' ends are swedged flat, and have punched holes for the pin TJW 1.5 6.78 x 10'd' connectors.Each web member gage is identified as specified TJS 2.3 6.94 x 1 Old' in the approved Trus Joist Open-Web Truss manufacturing TJM 3.5 10.06 x 1d`d' standard. TJH 1 5.5 15.93 x 10'd' 2.2.2.3 Pin Connectors:The steel pin connectors are of the For SI:1 lb.-in?=2870 N-mm'. dimensions and materials as specified in the approved Trus Joist Open-Web truss quality control manual and d = Average depth of the truss minus the chord depth in manufacturing standard. the table above(pin-to-pin depth of the truss)(inches). 2.2.2.4 Bearing Clips: Bearing clips have different W = Uniform load(pin. configurations for each Open-Web truss series, and are fabricated from ASTM A 446 steel. L = Clear span(feet). 2.2.2.5 Tension Connector: The tension connector is a 2.2.3.8 Tension Connector: The variable-density LVL variable-density LVL component used at splice locations of tension-connector design parameters are as follows: Open-Web truss tension chords.It has both nondensified and Bolt bearing in wood: 6,800 psi(46.88 MPa). densified sections.The nondensified section is finger-jointed to sawn lumber tension chord members, and the densified Tension in densified net area: 2,700 psi(18.62 MPa). section is spliced with steel plates on both sides of the Tension in nondensified area: 1,970 psi(13.58 MPa). connector with the number of bolts required by design. See Figure 5 for details. The bolt end distance a shall not be less than 4d or e, 2.2.3 Design and Installation: Open-Web trusses are whichever is greater,where; designed in accordance with accepted truss design principles d = Diameter of bolt(inches). and this report. e = P=(1,200t) 2.2.3.1 Chord Members: Table 3 provides chord section properties and Table 4 provides allowable chord stresses. P = Load per bolt(pounds). The top chords of the Open-Web trusses are designed as t = Thickness of connector, measured along the bolt continuous members subject to combined axial and bending (inches). stresses.The bottom chords are designed as axially loaded tension members, provided ceilings that are directly applied Steel side plates and bolts shall be designed in accordance to the chords, or stripping spaced not more than 24 inches with the code. (610 mm) on center, do not weigh more than 5 psf (0.24 2,2.3.9 Lateral Support: Each Open-Web truss kN/m ).Forinu other membrconditions, be bottom chords are designed compression chord member, including each member of as continuous members subject to combined axial and double member chords,requires lateral support at least every bending stresses. 24 inches (610 mm). Each connection must be capable of 2.2.3.2 Web Members:Table 5 provides allowable tension transmitting a 75-pound (334 N) horizontal load. Table 9 and compression loads,including bearing,for web members. provides lateral restraint requirements for Open-Web truss 2.2.3.3 Pin Connectors:Table 6 provides allowable loads compression chord members. for pin connectors bearing on chord members.The allowable 2.2.3.10 Metal Strap or Tension-Tie Capacity: The load for the resultant parallel and perpendicular pin loading on allowable capacities for metal straps or *tension-ties, the chord member is determined using the Hankinson formula recognized in a current ICC-ES evaluation report, when in accordance with the code. connected to structural composite lumber chord members or 2.2.3.4 Bearing Assemblies: Tables 7 and 8 provide minimum nominal 2-by-4 structural composite lumber nailer allowable reactions at supports with bearing clips.See Figure plates of Open-Web trusses,in conformance with Figure 9 of 6. this report, may be calculated using an allowable stress design capacity of 112 pounds (498 N) per nail. The 2.2.3.5 Duration of Load: The allowable chord flexural connections with the structural composite lumber chords or stresses may be increased in accordance with Item 6 of nailer plates may be used for out-of-plane wall anchorage to Section 2316.2 of the UBC, or Part 2.3.2 of the NDS. _ flexible diaphragms inlieuofthe minimum 2'/z-inch(63.5mm) 2.2.3.6 Repetitive Member Use: When Open-Web truss W��eme--fhiricss specifies in Mem-5 of Section ---- installation complies with repetitive-member use in 1633.2.8.1 of the UBC.