Trusted WOOD I JOISTS SECTION: 06 ON WEB i. Conformity! ICC-ES Evaluation. Copyright 2015

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1 0 ICC ES Report ICC ES (800) (562) es.orgg 000 Most Widely Accepted and Trusted ESR 2974 Reissued 07/4 This report is subject to renewal 07/5. DIVISION: WOOD, PLASTICS AND COMPOSITES SECTION: 06 7 WOOD I JOISTS REPORT HOLDER: SWEET S JOISTS, INC. 8 BOROVEC ROAD CHEHALIS, WASHINGTO ON EVALUATION SUBJECT: WEB i WOOD I JOISTS Look for the trusted marks of Conformity! 4 Recipient of Prestigiouss Western States Seismic Policy Council (WSSPC) Award in Excellence A Subsidiary of ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement off the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright 5

2 ICC-ES Evaluation Report (800) (562) ESR-2974* Reissued July 4 This report is subject to renewal July 5. A Subsidiary of the International Code Council DIVISION: WOOD, PLASTICS AND COMPOSITES Section: 06 7 Wood I-joists REPORT HOLDER: SWEET'S JOISTS, INC. 8 BOROVEC ROAD CHEHALIS, WASHINGTON (60) Bruce@Webjoist.com ADDITIONAL LISTEE: WEB JOIST NORTHWEST CORP. 8 BOROVEC ROAD CHEHALIS, WASHINGTON 9852 (60) EVALUATION SUBJECT: WEB-i WOOD I-JOISTS.0 EVALUATION SCOPE Compliance with the following codes: 2 and 09 International Building Code (IBC) 2 and 09 International Residential Code (IRC) Properties evaluated: Structural Fire resistance 2.0 USES The WEB-i wood I-joists described in this report are used as structural framing members in floor and roof assemblies. The structural capacities and design provisions of the WEB-i wood I-joists comply with IBC Section..2 for allowable stress design, and IRC Section R DESCRIPTION. General: The WEB-i joists are prefabricated wood I-joists with lumber flanges and oriented strand board (OSB) webs. The flanges are solid-sawn lumber with glued finger-joints, which are manufactured and tested daily in accordance with the manufacturer s quality control manual, to form continuous flanges. The face grain of the OSB web is oriented vertically, and the web-to-flange and web-to-web connections are proprietary, glued, tongue-and-groove joints. Joist depths vary from 7 to inches (02 to 7 mm). See Table and Figure for joist descriptions..2 Materials:.2. Flanges: Flange material is -by- -inch (8 by 89 mm) machine-stress-rated (MSR) lumber meeting the grading rules specified in Table No. 4C of the National Design Specification for Wood Construction (NDS) Supplement and in the manufacturer s quality control manual. Lumber species are Douglas fir larch, hem-fir, spruce-pine-fir, Engelmann spruce/lodgepole pine or lodgepole pine..2.2 Webs: Webs are - or -inch-thick (9.5 or 2.7 mm) OSB panels conforming with Structural I, Exposure I, performance-rated panel requirements as noted in U.S. Department of Commerce Product Standard PS-2 and the manufacturer s quality control manual..2. Adhesive: The adhesive is an exterior-type adhesive complying with ASTM D 2559 and Section 5.. of ASTM D DESIGN AND INSTALLATION 4. Installation: Installation of the WEB-i wood I-joists described in this report must comply with the applicable code requirements, this report and manufacturer s published installation instructions. The manufacturer s published installation instructions must be available at the jobsite at all times during installation. Design: The WEB-i wood I-joists must be designed using accepted joist design principles and this report.. Allowable Capacity: Table 2 specifies allowable moments, shears, and stiffnesses (EI) for the WEB-i wood I-joists..2 Web Stiffeners: Both sides of the web of joists that are 6 inches (406 mm) and deeper must have web stiffeners installed at all supports. Table 4 specifies web stiffener requirements. At locations where concentrated loads exceed,500 pounds (6.67 kn), both sides of the web require stiffeners for all joist depths. See Figure 2.. Lateral Support: The compression flange requires continuous lateral support, and the joist ends require restraint to prevent rollover..4 Holes: Figure shows allowable hole size and location of holes in the joist webs. *Revised April 5 ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright 5 Page of 6 000

3 ESR-2974 Most Widely Accepted and Trusted Page 2 of 6.5 Duration of Load: Adjustments for duration of load according to Sections 7..2 and 0..2 of the NDS apply to the WEB-i wood I-joists and their fastenings, respectively..6 In-service Moisture Conditions: The WEB-i wood I-joists must be installed in dry, covered conditions, where the in-service moisture content is less than 6 percent..7 Repetitive-member Use: The repetitive member factor for WEB-i wood I-joists shall be taken as.0..8 Beam Span: Beam span must comply with the code. Vertical shear calculations must include all loads within the span from centerline to centerline of bearing supports..9 Deflection: Deflection of uniformly loaded, simplespan joists and joists with a concentrated load at mid-span are determined with the deflection formulae in Footnote of Table 2..0 Blocking Panels: WEB-i wood I-joists under bearing walls that are perpendicular to the joists must have full-depth solid blocking.. Bearing Length: Table provides equations that determine allowable shear based on bearing length of the I-joists at simple-span end supports. 4. One-hour Fire-resistance-rated Roof and Floorceiling Assemblies: WEB-i I-joists used in one-hour fire-resistance-rated roof and floor-ceiling assemblies must be installed in accordance with Section.2.4 of ESR-8, or IBC Table 72.() Item Nos. 2-., and 2-. through -. (Table 7.() Item Nos. 2-. and 2-. through -. of the 09 IBC). 5.0 CONDITIONS OF USE The WEB-i wood I-joists described in this report comply with, or are suitable alternatives to what is specified in, those codes listed in Section.0 of this report, subject to the following conditions: 5. Installation complies with this report, the manufacturer s published installation instructions and the applicable code. In the event of conflicts between the manufacturer s published installation instructions and this report, this report governs. 5.2 Structural design information for the use of the joists must be indicated on the construction documents submitted with the permit application. The construction documents and the design configurations must be consistent with this report, and must be prepared by a registered design professional where required by the statutes of the jurisdiction in which the project is to be constructed. 5. Cutting of the flanges of the joists is not permitted. Web openings in wood I-joists must conform to the requirements as specified in Section.4 of this report. Web opening conditions not covered in Section.4 of this report are outside the scope of this report. 5.4 Evaluation of the trusses and joists is limited to interior dry-use conditions. Dry conditions of use are those conditions of use represented by moisture content that is less than 6 percent in the wood I-joists. 5.5 The joists are manufactured by Web Joist Northwest Corp. in Chehalis, Washington, under a quality-control program with inspections by ICC-ES and PFS Corporation (AA-652). 6.0 EVIDENCE SUBMITTED Data in accordance with the ICC-ES Acceptance Criteria for Prefabricated Wood I-joists (AC4), dated October (editorially revised February 4). 7.0 IDENTIFICATION Each WEB-i wood I-joist bears a stamped identification label with the product name (WEB-i Joist), manufacturer s name (Web Joist Northwest Corp.), manufacturer s city and state (Chehalis, WA), evaluation report number (ESR-2974), and name of the inspection agency (PFS Corporation). In addition, the flanges of the I-joists are labeled with the applicable lumber grade stamp.

4 ESR-2974 Most Widely Accepted and Trusted Page of 6 TABLE WEB-i JOIST DESCRIPTION,2, Series Code Number For SI: in = 25.4 mm. Flange Grade MSR 650f-.5E MSR 800f-.6E MSR 0f-.8E MSR 00f-2.0E MSR 2700f-2.2E MSR 50f-2.E MSR 650f-.5E MSR 800f-.6E MSR 0f-.8E MSR 00f-2.0E MSR 2700f-2.2E MSR 50f-2.E Web Thickness (inches) Depth Range (inches) Flange size is 2x4 (.50" x.50") 2 Web is Structural I OSB Series code numbers: st digit = Flange size, 2nd digit = Flange grade, rd digit = Web thickness and 4th digit = Web material. 4 Flanges are labeled with applicable grade stamp. FIGURE WEB-i COMPONENTS

5 ESR-2974 Most Widely Accepted and Trusted Page 4 of 6 TABLE 2 WEB-i JOIST PROPERTIES,2,,4 Depth (in.) Weight (plf) Shear Moment (Ft.-lbs.) EIx0 6 (lbs.-in. 2 ) Kx0 6 Depth (in.) Weight (plf) Shear Moment (Ft.-lbs.) EIx0 6 (lbs.-in. 2 ) Kx WEB-i 4 (2x4 650f-.5E Flange & " OSB Web).6.8,929 2,47 2,5,69 4,482 5,98 6,259 7, 7,982 8,84 9, ,54,466,88 2,2 WEB-i 42 (2x4 800f-.6E Flange & " OSB Web).6.8,929 2,47 2,5,69 5,64 6, 7, 8,2 9,95 0,87, ,2,56,940 2,6 WEB-i 442 (2x4 0f-.8E Flange & " OSB Web).6.8,929 2,47 2,5,69 6,92 8,5 9,665 0,995 2,25,655 4, ,059,85,759 2,82 2,656 WEB-i 452 (2x4 00f-2.0E Flange & " OSB Web).6.8,929 2,47 2,5,69 8,459 0,87,82,48 5,06 6,689 8, ,76,59,954 2,425 2,95 WEB-i 462 (2x4 2700f-2.2E Flange & " OSB Web).6.8,929 2,47 2,5,69 9,448,77,9 5,008 6,8 8,640, ,294,69 2,50 2,667,6 WEB-i 472 (2x4 50f-2.E Flange & " OSB Web).6.8,929 2,47 2,5,69 0,07 2,7 4, 6,056 7,998 9,940 2, ,5,770 2,7 2,788, WEB-i 4 (2x4 650f-.5E Flange & " OSB Web) 5. 5.,87,79,572,764,957 4,49 6,68 7,07 7,865 8,7 9,56 0,9,9 899,80,504,872 2,6 2,747,256 WEB-i 42 (2x4 800f-.6E Flange & " OSB Web) 5. 5.,87,79,572,764,957 4,49 7,06 8,08 9,060 0,07,04,970 2,8 959,259,604,997 2,48 2,90,47 WEB-i 442 (2x4 0f-.8E Flange & " OSB Web) 5. 5.,87,79,572,764,957 4,49 9,525 0,84 2,44,45 4,76 6,045 7,99,079,46,805 2,6 2,74,296,908 WEB-i 452 (2x4 00f-2.0E Flange & " OSB Web) 5. 5.,87,79,572,764,957 4,49,64,2 4,84 6,44 8,044 9,6 2,02,99,574 2,005 2,496,048,662 4,42 WEB-i 462 (2x4 2700f-2.2E Flange & " OSB Web) 5. 5.,87,79,572,764,957 4,49,002 4,790 6,577 8,65,5 2,90 2,478,9,7 2,6 2,746,52 4,0 4,776 WEB-i 472 (2x4 50f-2.E Flange & " OSB Web) 5. 5.,87,79,572,764,957 4,49,909 5,8 7,74 9,646 2,559 2,4 25,6,79,80 2,06 2,870,505 4, 4, For SI: in = 25.4 mm, lbf = 48 N, pli = 0. kg/m, plf =.488 kg/m, Ft-lbf =.558 N-m, lbf-in 2 = kg-mm 2. Calculate bending and shear deflection as follows: Uniformly distributed load: Defl.(in.) = (5WL 4 4EI )+( WL 2 /K) Concentrated load at centerline: Defl.(in.) = (PL /48EI)+(2PL/K) Where: W = Uniform load (pli) L = Span length (in.) EI = MOE times I (pounds-inches 2 x 0 6 ) K = Shear defl. constant (pounds x 0 6 ) P = Concentrated load (pounds). 2 Allowable shear is lower of above value or bearing length value from equations in Table. See Table 4 for web stiffener requirements. 4 Straight line interpolation may be made between depths.

6 ESR-2974 Most Widely Accepted and Trusted Page 5 of 6 TABLE ALLOWABLE SHEAR FOR BEARING LENGTH For " Web no Web Stiffeners For " Web with Web Stiffeners For " Web with Web Stiffeners V = D B V = D B V = D B For SI: in = 25.4 mm, lbf = 48 N. Where: V = Allowable shear (Lb.) D = Out-to-out depth of joist (in.) B = Bearing length (in.) (B is not to be less than.50") The allowable shear for bearing length is for normal duration of loading and may be increased for duration of loading in accordance with Section 7..2 of NDS. TABLE 4 WEB STIFFENERS NAILING,2, Joist Total nails per stiffener location Depth Simple Span Continuous Span (inches) " Web " Web " Web " Web (Box) -0d* 4-0d* 4-0d 5-0d 6-0d 6-0d 7-0d (Com.) 4-0d 5-0d 6-0d 6-0d 7-0d 8-0d 8-0d (Box) 4-0d 6-0d 6-0d 7-0d 9-0d 9-0d 0-0d (Com.) 6-0d 7-0d 9-0d 9-0d 0-0d 2-0d 2-0d For SI: in = 25.4 mm. Web stiffeners are No. 2 or better. Use 2x4's at simple spans and 2x6's at continuous spans. Install nails from both sides. 2 May substitute 4 Ga. staples for 0d Box nail and Ga. staples for 0d Common nail. Staples Min. are 7 / 6 " crown and " leg. Web stiffeners not required for 7 " & 4" deep " web simple span ends but may be needed for bearing length requirements. *"U"-type hanger may require web stiffeners to comply with nailing requirements through side plates of hanger. FIGURE 2 WEB STIFFENERS For SI: in = 25.4 mm.

7 ESR-2974 Most Widely Accepted and Trusted Page 6 of 6 For simple spans and uniform load, the following formulas may be used to determine minimum distance to hole. X = (V-V H )/W V = WL/2 V H = V A (D E /D W ) Where: X = Minimum distance in feet from centerline of support to centerline of round hole or edge of square hole. V = Shear at bearing in pounds. W = Uniform loading in pounds per lineal foot. L = Span in feet from centerline of support to centerline of support. V H = Allowable shear at hole in pounds. V A = Allowable shear in pounds from Table 8. D E = Effective depth at hole in inches (D E cannot be < Round hole D E = D W - Square hole D E = D W - Rectangular hole D E = D W - (h/0.6667) D W = Depth of web in inches = D -.75". h = Height of hole in inches (h max. to be the lower of D-6 or a value that results in D E being 0.5"). D = Out-to-out depth of joist in inches. NOTES:. Do not cut the web within nine inches of the support centerline, otherwise, a two inch hole can be cut in the web anywhere. The top and bottom flanges are never to be cut. 2. Where more than one hole is desired, the length of the web between edges of holes must be equal or exceed twice the height of the largest hole. FIGURE HOLE SIZE AND LOCATION For SI: in = 25.4 mm, lbf = 48 N, lbf/ft =.488 kg/m.