0 ICC ES Report ICC ES (800) 42 687 (62) 699 04 www.icc es.org 000 Most Widely Accepted and Trusted ESR 79 Reissued 0/206 This report is subject to renewal 0/208. DIVISION: 06 00 00 WOOD, PLASTICS, AND COMPOSITES SECTION: 06 0 2 WOOD, PLASTIC, AND COMPOSITE FASTENINGS REPORT HOLDER: SCHRAUBENWERK GAISBACH GMBH (SWG) AM BAHNHOF 0 D 7468 WALDENBURG GERMANY EVALUATION SUBJECT: SWG ASSY.0 WOOD SCREWS Look for the trusted marks of Conformity! 204 Recipient of Prestigious 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 of the subject of the report or a recoendation 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 206 ICC Evaluation Service, LLC. All rights reserved.
ICC-ES Evaluation Report www.icc-es.org (800) 42-687 (62) 699-04 ESR-79 Reissued October 206 This report is subject to renewal October 208. A Subsidiary of the International Code Council DIVISION: 06 00 00 WOOD, PLASTICS AND COMPOSITES Section: 06 0 2 Wood, Plastic and Composite Fastenings REPORT HOLDER: SCHRAUBENWERK GAISBACH GmbH (SWG) AM BAHNHOF 0 D-7468 WALDENBURG GERMANY +49 7942 000 info@swg-produktion.de www.swg-produktion.de Technical Support: MYTICON TIMBER CONNECTORS INC. (866) 899-4090 info@my-ti-con.com www.my-ti-con.com EVALUATION SUBJECT: SWG ASSY.0 WOOD SCREWS.0 EVALUATION SCOPE Compliance with the following codes: 202, 2009 and 2006 International Building Code (IBC) 202, 2009 and 2006 International Residential Code (IRC) Property evaluated: Structural 2.0 USES SWG Assy.0 screws are alternate dowel-type threaded fasteners used in engineered wood-to-wood connections. The fasteners may be used under the IRC when an engineered design is submitted in accordance with IRC Section R0....0 DESCRIPTION. General: SWG Assy.0 screws have a gimlet point, and one of three head styles [hex (designated Kombi ), washer (designated SK ), or countersunk with milling pockets], as shown in Figures through. The heads have a recess for use with an AW drive, which is a proprietary driving bit available from the report holder. The screws are available with nominal diameters of 6, 8, 0 and 2 ( / 4, / 6, / 8 and / 2 inch). The screws are partially threaded, with a shank cutter design between the threads and the smooth shank, and are available in varying lengths as shown in Table. The specified diameters and other dimensions are provided in Table for each screw. The screws are available in boxes of loose fasteners..2 Materials:.2. SWG Assy.0 Screws: The screws are manufactured from carbon steel wire complying with the manufacturer s specifications. After the heads are formed and the threads are rolled, the screws are hardened, in accordance with the manufacturer s specifications. The hardened screws are then galvanized with a minimum zinc coating thickness of µm and coated with a lubricant..2.2 Wood Members: Wood side and main members must have a moisture content less than or equal to 9 percent at the time of screw installation and while in service. Sawn lumber must have an assigned specific gravity, as specified in Table...A of the 202 ANSI/AWC National Design Specification for Wood Construction (NDS) (Table..2A of the 200 NDS) within the ranges given in Tables 2 and. Parallel strand lumber (PSL) must have a minimum equivalent specific gravity, given in the applicable ICC-ES evaluation report, of 0.0. The thickness of the wood main member, t m, must be equal to or greater than the screw length less the thickness of the side member, t s. The minimum thickness of both main and side members must also be as follows: 24 ( / 6 inch) for 6 diameter screws; 0 ( / 6 inches) for 8 diameter screws; 40 ( 9 / 6 inches) for 0 diameter screws; 80 ( / 6 inches) for 2 diameter screws. 4.0 DESIGN AND INSTALLATION 4. Design: The allowable lateral load for a single-screw connection is the lesser of: (a) the reference lateral design value described in Section 4.., adjusted by all applicable adjustment factors, and (b) the allowable screw shear strength given in Table. The allowable load for a singlescrew connection in which the screw is subject to tension is the least of: (a) the reference withdrawal design value described in Section 4..2, adjusted by all applicable adjustment factors; (b) the reference head pull-through design value described in Section 4..2, adjusted by all applicable adjustment factors; and (c) the allowable screw tension strength given in Table. Applicable adjustment factors for reference design values must be as specified for dowel-type fasteners and wood screws in Sections 0. and. of the NDS, respectively. 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 recoendation 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 206 ICC Evaluation Service, LLC. All rights reserved. Page of 8 000
ESR-79 Most Widely Accepted and Trusted Page 2 of 8 Connections containing multiple SWG Assy.0 screws must be designed in accordance with Sections 0.2.2 and.6 of the NDS. Where SWG Assy.0 screws are subjected to combined lateral and withdrawal loads, connections must be designed in accordance with Section.4. of the NDS. When designing a connection, the structural members must be checked for load-carrying capacity in accordance with Section 0..2 of the NDS, and local stresses within the connection must be checked against Appendix E of the NDS to ensure the capacity of the connection and fastener group. 4.. Reference Lateral Design Values (Z): Reference lateral design values (Z) for single shear connections with the SWG Assy.0 screws loaded parallel or perpendicular to grain may be determined in accordance with Section.. of the NDS using the following parameters and limitations:. The applicable specified bending yield strength from Table must be used for design. 2. The side member thickness must be a minimum of / 4 inches (4 ).. The minimum fastener penetration into the main member, excluding tip length, must be 6D. 4. Reference lateral design values must be multiplied by all applicable adjustment factors, as applicable to dowel-type fasteners, in accordance with the NDS.. Use is limited to dry in-service conditions, such that the wet service factor, C M, is.0 in accordance with the NDS. 6. For sawn lumber, the specific gravity used for design purposes must be the assigned specific gravity per NDS Table..A (Table..2A of the 200 NDS). 7. For PSL, the specific gravity used for design purposes must be the equivalent specific gravity for the PSL given in the applicable ICC-ES evaluation report. Reference lateral design values (Z) for select connection configurations are given in Table 2. 4..2 Reference Withdrawal Design Values (W) and Head Pull-through (P) Design Values: Reference withdrawal design values (W) and head pull-through (P) design values for wood-to-wood connections with SWG Assy.0 screws are given in Tables and 4, respectively. 4.2 Installation: 4.2. General: SWG Assy.0 screws must be installed in accordance with the manufacturer s published installation instructions and this report. Screws must be installed such that their main axis is oriented perpendicular to the wood grain. An appropriate screw length must be used, such that the screw will penetrate a minimum of 6 diameters into the main member for lateral connections and 8 diameters into the main member for tension connections. The side member must be in direct contact with the main member, such that no gap exists between the wood members. Screws must be driven using the manufacturerrecoended drive bit, with a rotary drill, or a percussion drill set to rotary only mode. Upon installation, the flat surface of the countersunk heads and the top of the cylindrical heads must be flush with the surface of the side member. The screws must not be overdriven. 4.2.2 End Distance, Edge Distance and Spacing: Minimum end distances, edge distances and spacing of the screws must be sufficient to prevent splitting of the wood, or as required by Table, whichever is greater. When the screws are used in PSL, the minimum fastener end and edge distances and spacing must be in accordance with Table or in accordance with the ICC-ES evaluation report on the PSL, whichever is more restrictive. 4.2. Pilot Holes: Typical installation of SWG Assy.0 screws does not require predrilling. Predrilling of holes to reduce splitting is recoended by the manufacturer for the following conditions:. For species which are prone to splitting, including fir, Douglas fir and spruce. 2. For lumber with thickness ( / 2 inches).. For laterally loaded screws installed in lumber with a thickness 7D ( 4D for fir, Douglas fir and spruce). 4. For axially loaded screws installed in lumber with a thickness 0D and/or a width of less than 8D or 60 (2 / 8 inches), whichever is greater. For recoended sizes of predrilled holes, see Table 6..0 CONDITIONS OF USE The SWG Assy.0 screws 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:. The screws must be installed in accordance with the manufacturer s published installation instructions and this report. In case of a conflict between this report and the manufacturer s installation instructions, this report governs..2 Calculations and details demonstrating compliance with this report must be submitted to the code official. The calculations and details must be prepared by a registered design professional where required by the statutes of the jurisdiction in which the project is to be constructed.. SWG Assy.0 screws must be installed and used in dry in-service conditions where the moisture content of the wood members does not exceed 9 percent..4 Use of the screws in contact with preservative-treated or fire-retardant-treated wood is outside the scope of this report. 6.0 EVIDENCE SUBMITTED Data in accordance with the ICC-ES Acceptance Criteria for Alternate Dowel-type Threaded Fasteners (AC2), dated June 204. 7.0 IDENTIFICATION Individual SWG Assy.0 screws are identified in the field by their unique configurations. In addition, the countersunk screw heads are marked with the letters ASSY, as shown in Figures 2 and. Packages of screws are identified with the manufacturer s name (SWG); product name (Assy.0); head type and drive size; screw diameter and length (in both inches and millimeters); and the evaluation report number (ICC-ES ESR-79).
ESR-79 Most Widely Accepted and Trusted Page of 8 NOMINAL 6 ( / 4 ) 8 ( / 6 ) HEAD STYLE OUTSIDE THREAD 6.0 [0.26] 6.0 [0.26] 8.0 [0.] 8.0 [0.] 8.0 [0.] ROOT.9 [0.4].9 [0.4]. [0.209]. [0.209]. [0.209] TABLE SPECIFICATIONS AND STRENGTHS SWG ASSY.0 SCREWS SMOOTH SHANK 4.4 [0.7] 4.4 [0.7].8 [0.228].8 [0.228].8 [0.228] THREAD PITCH.60 [0.42].60 [0.42].6 [0.220].6 [0.220].6 [0.220] HEAD 4.0 [0.] 2.0 [0.472].9 [0.467] (width between parallel edges) 22.0 [0.866] 4.8 [0.8] DRIVE TYPE AND SIZE AW 0 AW 0 or 2 hex socket OVERALL LENGTH () [inches] THREAD LENGTH 70 [2 / 4 ] 42 [ / 8 ] [ / 8 to / 2 ] 0 [2] 00 [ 7 / 8 ] 60 [2 / 8 ] 0 to 00 [4 / 4 to / 4 ] 70 [2 / 4 ] 70 [2 / 4 ] 42 [ / 8 ] [ / 8 to / 2 ] 0 [2] 00 [ 7 / 8 ] 60 [2 / 8 ] 0 to 00 [4 / 4 to / 4 ] [ / 8 to / 2 ] 70 [2 / 4 ] 0 [2] 00 [ 7 / 8 ] 60 [2 / 8 ] 0 to 200 [4 / 4 to 7 7 / 8 ] 220 to 800 [8 / 8 to / 2 ] [ / 8 to / 2 ] 80 [ / 8 ] 00 [ 7 / 8 ] 0 [2] 00 [ 7 / 8 ] 60 [2 / 8 ] 0 to 200 [4 / 4 to 7 7 / 8 ] 220 to 800 [8 / 8 to / 2 ] [ / 8 to / 2 ] 80 [ / 8 ] 00 [ 7 / 8 ] 0 [2] 00 [ 7 / 8 ] 60 [2 / 8 ] 0 to 200 [4 / 4 to 7 7 / 8 ] 220 to 800 [8 / 8 to / 2 ] 80 [ / 8 ] 00 [ 7 / 8 ] TIP LENGTH 6.0 [0.26] 8.0 [0.] SPECIFIED BENDING YIELD STRENGTH 2, F yb (MPa) [psi] 69 [69,00] 06 [0,200] ALLOWABLE STRENGTH Tension (kn) [lbf].07 [0] 8.9 [90] Shear (kn) [lbf].02 [68].82 [20]
ESR-79 Most Widely Accepted and Trusted Page 4 of 8 0 ( / 8 ) 2 ( / 2 ) 0.0 [0.94] 0.0 [0.94] 0.0 [0.94] 2.0 [0.472] 2.0 [0.472] TABLE SPECIFICATIONS AND STRENGTHS SWG ASSY.0 SCREWS (Continued) 6. [0.248] 6. [0.248] 6. [0.248] [0.28] [0.28] [0.28] [0.28] [0.28] 8.2 [0.2] 8.2 [0.2] 4.8 [0.8] (width between parallel edges) 2.0 [0.984] 8. [0.7] 6.8 [0.66] (width between parallel edges) 29.00 [.42] or hex socket AW 0 or 7 hex socket AW 0 00 [ 7 / 8 ] 60 [2 / 8 ] 20 to 40 [4 / 4 to / 2 ] 60 to 00 [6 / 4 to / 4 ] 20 to 000 [2 / 8 to 9 / 8 ] 80 [ / 8 ] 00 [ 7 / 8 ] 20 [4 / 4 ] 00 [ 7 / 8 ] 60 [2 / 8 ] 20 to 40 [4 / 4 to / 2 ] 60 to 00 [6 / 4 to / 4 ] 20 to 000 [2 / 8 to 9 / 8 ] 80 [ / 8 ] 00 [ 7 / 8 ] 20 [4 / 4 ] 00 [ 7 / 8 ] 60 [2 / 8 ] 20 to 40 [4 / 4 to / 2 ] 60 to 00 [6 / 4 to / 4 ] 20 to 000 [2 / 8 to 9 / 8 ] 80 [ / 8 ] 00 [ 7 / 8 ] 20 [4 / 4 ] 00 [ 7 / 8 ] 60 [2 / 8 ] 20 to 40 [4 / 4 to / 2 ] 60 to 200 [6 / 4 to 7 8 / 8 ] 220 to 60 [8 / 8 to 4 / 8 ] 80 to 20 [ to 20 / 2 ] 80 [ / 8 ] 00 [ 7 / 8 ] 20 [4 / 4 ] 4 [ / 6 ] 00 [ 7 / 8 ] 60 [2 / 8 ] 20 to 40 [4 / 4 to / 2 ] 60 to 200 [6 / 4 to 7 8 / 8 ] 220 to 60 [8 / 8 to 4 / 8 ] 80 [ / 8 ] 00 [ 7 / 8 ] 20 [4 / 4 ] 0.0 [0.94] 2.0 [0.472] 942 [6,600] 47 [66,00] 80 to 20 [ to 20 4 [ / 6 ] / 2 ] For and head styles, overall fastener length is measured from the underside of the head to bottom of tip. For the head style, overall fastener length is measured from top of head to bottom of tip. 2 Bending yield strength determined in accordance with ASTM F7 using the root diameter. 2.24 [2780]. [070] 7.9 [72] 9.2 [209]
ESR-79 Most Widely Accepted and Trusted Page of 8 DESIGNATION SIDE THICKNESS (inches) PENETRATION INTO MAIN (inches) TABLE 2 REFERENCE LATERAL DESIGN VALUES (Z),2,,4, REFERENCE LATERAL DESIGN VALUE, Z (lbf) FOR SPECIFIC GRAVITIES OF 0. 0.42 0.49 0. Z ǁ Z /ǁ Z Z ǁ Z /ǁ Z Z ǁ Z /ǁ Z Z ǁ Z /ǁ Z / 4 " x 4" 2 / 4 8 8 8 2 2 2 27 27 27 / 4 " x 4 / 4 " 2 2 / 2 42 42 42 8 8 8 2 2 2 27 27 27 / 4 " x / 2 " 2 / 4 2 / 2 48 48 48 8 8 8 2 2 2 27 27 27 / 4 " x 6 / 4 " / 2 2 / 2 48 48 48 8 8 8 2 2 2 27 27 27 / 4 " x 7 / 8 " 4 2 7 / 8 48 48 48 8 8 8 2 2 2 27 27 27 / 4 " x 7 7 / 8 " / 2 2 / 8 48 48 48 8 8 8 2 2 2 27 27 27 / 4 " x 8 / 8 " 6 2 / 8 48 48 48 8 8 8 2 2 2 27 27 27 / 4 " x 9 / 2 " 7 2 / 4 48 48 48 8 8 8 2 2 2 27 27 27 / 4 " x / 4 " 7 / 2 4 48 48 48 8 8 8 2 2 2 27 27 27 / 4 " x / 4 " 8 / 2 48 48 48 8 8 8 2 2 2 27 27 27 / 4 " x / 4 " 9 2 / 2 48 48 48 8 8 8 2 2 2 27 27 27 / 6 " x 4 / 4 " 2 2 7 / 6 64 24 87 87 280 224 224 249 249 / 6 " x / 2 " 2 / 4 2 7 / 6 8 48 48 24 94 94 280 224 224 249 249 / 6 " x 6 / 4 " 2 / 4 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 7 / 8 " / 2 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 7 / 8 " 4 2 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 8 / 8 " / 2 2 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 9 / 2 " 6 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 0 / 4 " 7 2 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x " 7 / 2 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 2 / 8 " 8 4 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x / 8 " 9 4 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 4 / 8 " 0 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x / 4 " 4 7 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 6 / 8 " 2 4 / 6 94 6 6 24 94 94 280 224 224 249 249 / 6 " x 8 7 / 8 " 4 4 7 / 6 94 6 6 24 94 94 280 224 224 249 249 / 8 " x / 2 " 2 / 8 292 80 60 227 2 96 26 22 49 00 288 / 8 " x / 2 " 2 / 4 2 / 8 0 94 4 66 260 29 96 292 27 49 4 297 / 8 " x 6 / 4 " 2 / 4 / 8 2 208 76 66 26 244 96 292 27 49 4 297 / 8 " x 6 / 4 " / 2 2 / 8 2 27 78 66 26 2 96 292 27 49 4 297 / 8 " x 7 / 8 " / 2 / 4 2 227 202 66 26 244 96 292 27 49 4 297 / 8 " x 7 / 8 " 4 2 / 4 2 227 9 66 26 244 96 292 27 49 4 297 / 8 " x 7 7 / 8 " 4 / 2 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x 8 / 8 " / 2 2 / 4 2 227 9 66 26 244 96 292 27 49 4 297 / 8 " x 9 / 2 " / 2 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x / 4 " 6 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x / 4 " 7 4 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x 2 / 8 " 7 / 2 4 / 4 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x / 8 " 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x / 8 " 8 / 2 / 4 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x 4 / 8 " 9 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x 4 / 8 " 9 / 2 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x " 0 4 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x / 4 " 4 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x 6 / 8 " / 2 4 / 2 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x 7 / 4 " 2 4 7 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x 8 / 8 " 4 / 4 2 227 20 66 26 244 96 292 27 49 4 297 / 8 " x 20 / 2 " 4 6 / 8 2 227 20 66 26 244 96 292 27 49 4 297 / 2 " x 7 / 8 " / 2 / 8 46 278 22 26 72 0 69 42 77 602 44 42 / 2 " x 7 7 / 8 " / 2 7 / 8 467 289 26 26 74 69 42 79 602 44 42 / 2 " x 7 7 / 8 " 4 / 8 467 07 27 26 74 7 69 42 79 602 44 42 / 2 " x 9 / 2 " / 2 / 2 467 20 26 26 74 9 69 42 79 602 44 42 / 2 " x 0 / 4 " / 2 4 / 4 467 20 28 26 74 9 69 42 79 602 44 42
ESR-79 Most Widely Accepted and Trusted Page 6 of 8 DESIGNATION SIDE THICKNESS (inches) TABLE 2 REFERENCE LATERAL DESIGN VALUES (Z),2,,4, (Continued) PENETRATION INTO MAIN (inches) REFERENCE LATERAL DESIGN VALUE, Z (lbf) FOR SPECIFIC GRAVITIES OF 0. 0.42 0.49 0. Z ǁ Z /ǁ Z Z ǁ Z /ǁ Z Z ǁ Z /ǁ Z Z ǁ Z /ǁ Z / 2 " x / 4 " 6 / 4 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x 2 / 8 " 7 / 8 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x 2 / 8 " 7 / 2 4 / 8 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x / 8 " 8 4 7 / 8 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x / 8 " 8 / 2 4 / 8 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x 4 / 8 " 9 4 / 8 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x 4 / 8 " 9 / 2 4 / 8 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x " 0 4 / 2 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x / 4 " 4 / 4 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x 6 / 8 " / 2 4 / 8 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x 7 / 4 " 2 4 / 4 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x 8 / 8 " 4 / 8 467 20 28 26 74 9 69 42 79 602 44 42 / 2 " x 20 / 2 " 4 6 467 20 28 26 74 9 69 42 79 602 44 42 For SI: inch = 2.4, lbf = 4.4 N. Fastener length shown is a minimum. Tabulated values may be applied to longer fasteners, with greater penetration into the main member. 2 Tabulated reference lateral design values, Z, apply to screws driven into the side grain of the main member, such that the screws are oriented perpendicular to the grain and loaded as follows: Z ǁ : Both side and main members loaded parallel to grain. Z /ǁ : Side member loaded perpendicular to grain; main member loaded parallel to grain Z : Both side and main members loaded perpendicular to grain. Reference lateral design values must be multiplied by all adjustment factors applicable to wood screws, in accordance with the NDS. 4 SWG Assy.0 screws must be installed and used in dry in-service conditions, such that the wet service factor, C M, is.0 in accordance with the NDS. The specific gravity used for design purposes must be the assigned specific gravity for sawn lumber per NDS Table..A (Table..2A of the 200 NDS), or the equivalent specific gravity given in the applicable ICC-ES evaluation report on the PSL product. NOMINAL () TABLE REFERENCE WITHDRAWAL DESIGN VALUES (W),2,,4 N/ [lbf/in] FOR SPECIFIC GRAVITIES (SG) AND EQUIVALENT SPECIFIC GRAVITIES (ESG) OF: SG 0.6 0.6 > SG 0.0 0.0 > SG 0.46 0.46 > SG 0.42 0.42 > SG 0. ESG 0.0 6 [0.26] 2 [8] 0 [7] 29 [66] 22 [26] 20 [4] 27 [4] 8 [0.] 7 [2] [200] 2 [8] [77] 26 [48] [77] 0 [0.94] 9 [22] 9 [22] 4 [94] [88] 0 [7] 7 [2] 2 [0.472] [4] [29] 7 [2] [88] [88] 9 [22] Tabulated reference withdrawal design values, W, apply to screws driven into the side grain of the main member, such that the screws are oriented perpendicular to the grain and loaded in direct withdrawal. 2 Values must be multiplied by all adjustment factors applicable to wood screws, in accordance with the NDS. SWG Assy.0 screws must be installed and used in dry in-service conditions, such that the wet service factor, C M, is.0 in accordance with the NDS. 4 Reference withdrawal design values are to be multiplied by the length of thread penetration into the main member. Main member penetration must be at least 8 times the nominal diameter. Threaded length must not include the length of the tip. The specific gravity used for design purposes must be the assigned specific gravity for sawn lumber per NDS Table..A (Table..2A of the 200 NDS), and the equivalent specific gravity (ESG) must be the equivalent specific gravity given in the applicable ICC-ES evaluation report on the PSL product.
ESR-79 Most Widely Accepted and Trusted Page 7 of 8 TABLE 4 REFERENCE HEAD PULL-THROUGH DESIGN VALUES (P),2, N [lbf] NOMINAL HEAD TYPE MINIMUM SIDE THICKNESS, t s () [inches] FOR SPECIFIC GRAVITIES (SG) AND EQUIVALENT SPECIFIC GRAVITIES (ESG) OF: 4 SG 0.6 0.6 > SG 0.0 0.0 > SG 0.46 0.46 > SG 0. ESG 0.0 6 [0.26] 844 [4] 048 [26] 40 [26] 87 [97] 289 [290] 627 [4] 28 [274] 627 [4] 99 [440] 67 [262] 080 [24] 0 [27] 70 [60] 667 [0] 449 [26] 8 [0.] 29 [660] 27 [66] 227 [2] 6 [0] 24 [72] [ / 8 ] 0 [299] 602 [60] 0 [299] 42 [9] 887 [99] 29 [279] 797 [79] 97 [29] 4 [27] 867 [420] 0 [0.94] 24 [702] 299 [66] 26 [92] 28 [48] 47 [797] 904 [428] 672 [76] 26 [284] 0 [22] 2266 [09] 2 [0.472] 668 [7] 76 [840] 69 [68] 2 [722] 4 [29] 2729 [64] 0 [27] 28 [48] 208 [474] 477 [99] Tabulated head pull-through design values, P, must be multiplied by all adjustment factors applicable to wood screw withdrawal, in accordance with the NDS. 2 Design values apply to connections with minimum side member thicknesses, t s, as given above. SWG Assy.0 screws must be installed and used in dry in-service conditions, such that the wet service factor, C M, is.0 in accordance with the NDS. 4 The specific gravity (SG) used for design purposes must be the assigned specific gravity for sawn lumber per NDS Table..A (Table..2A of the 200 NDS), and the equivalent specific gravity (ESG) must be the equivalent specific gravity given in the applicable ICC-ES evaluation report on PSL product. TABLE CONNECTION GEOMETRY REQUIREMENTS MINIMUM DIMENSION (in terms of nominal screw diameter, D) CONDITION LATERALLY LOADED SCREWS AXIALLY LOADED SCREWS SG 0.42 0.42 < SG 0. and PSL SG 0.42 0.42 < SG 0. and PSL End distance 0D D (22.D in D-Fir) 0D D (22.D in D-Fir) Edge distance Lateral Loading parallel to grain Lateral Loading perpendicular to grain D 7D - - 0D 2D - - Axial Load on fastener - - D 7D Spacing between fasteners in a row D 7D (0.D in D-Fir) D 7D (0.D in D-Fir) Spacing between rows Loading parallel or perpendicular to grain D 7D - - Axial Load on fastener - - D 7D End distances, edge distances and screw spacing must be sufficient to prevent splitting of the wood, or as required by this table, whichever is the more restrictive.
ESR-79 Most Widely Accepted and Trusted Page 8 of 8 TABLE 6 RECOMMENDED OF PREDRILLED HOLES [inches] NOMINAL () [inches] APPLICABLE LOAD CONDITION AND SPECIFIC GRAVITY Screws Subject to Lateral Load SG 0. SG > 0. and PSL Screws Loaded Axially 0. SG 0. and PSL 6 [0.26] 4 [ / 2 ] 4 [ / 2 ] 4 [ / 2 ] 8 [0.] [ / 64 ]. [ 7 / 2 ] [ / 64 ] 0 [0.94] 6 [ / 64 ] 6. [ / 4 ] 6 [ / 64 ] 2 [0.472] 7 [ 7 / 64 ] 8 [ / 6 ] 7 [ 7 / 64 ] FIGURE ASSY.0 SCREW WITH HEX HEAD Root- Outside Thread- FIGURE 2 ASSY.0 SCREW WITH WASHER HEAD Root- Outside Thread- FIGURE ASSY.0 SCREW WITH COUNTERSUNK HEAD WITH MILLING POCKETS Root- Outside Thread-