ICC-ES Evaluation Report ESR-1275* Reissued May 2014 This report is subject to renewal May 1, 2015. www.icc-es.org | (800) 423-6587 | (562) 699-0543 DIVISION: 05 00 00—METALS Section: 05 12 00—Structural Steel Framing A Subsidiary of the International Code Council ® flange widths of the beam(s) and of the column. Vertical and horizontal shear plates, as applicable, are provided at the beam and column webs, respectively. Illustrative details are provided in Figures 1–5. The SidePlate® connection must be proportioned to develop the probable maximum moment capacity of the connected beam(s). Yielding and plastic hinge formations are intended to occur primarily in the beam beyond the end of the side plates away from the column face, with limited yielding in the connecting elements. REPORT HOLDER: SIDEPLATE SYSTEMS, INC. 25909 PALA, SUITE 200 MISSION VIEJO, CALIFORNIA 92691 (800) 475-2077 www.sideplate.com solutions@sideplate.com 3.2 Materials: 3.2.1 Structural Shapes: Structural steel shapes include wide flange shapes conforming to ASTM A6, hollow structural section (HSS) tube shapes conforming to ASTM A500, and built-up I-shape or box sections conforming to Chapter 22 of the IBC. In accordance with Section A3.3 of AISC 341-10 for the 2012 IBC (Section 6.3 of AISC 341-05 for the 2009 IBC), supplemental Charpy V-Notch toughness requirements must be applied to heavy section 1 hot rolled shapes with flanges 1 /2 inches (38 mm) thick and thicker and plates that are at least 2 inches (51 mm) thick. EVALUATION SUBJECT: ® SIDEPLATE STEEL FRAME CONNECTION TECHNOLOGY 1.0 EVALUATION SCOPE Compliance with the following codes: ® 2012 and 2009 International Building Code (IBC) Property evaluated: Structural design 2.0 USES SidePlate® Steel Frame Connections are used for beamto-column moment connections in steel moment frame designs. 3.0 DESCRIPTION 3.1 General: ® SidePlate Steel Frame Connection Technology provides beam-to-column moment connections for use in steel special moment frame (SMF) and steel intermediate ® moment frame (IMF) systems. The SidePlate moment connection system satisfies all applicable requirements of the 2012 IBC (including ANSI/AISC 341-10, Sections E2, E3 and K1) and the 2009 IBC (including ANSI/AISC 341-05 Part I, Section 9, Section 10 and Appendix P). This system also complies with the prequalification requirements under Sections 3.1 and 3.4 of the ICC-ES Acceptance Criteria for Steel Moment Frame Connection Systems (AC129), for both new and retrofit construction applications. The connection system is constructed of all welded fabrication, and features a physical separation, or “gap,” between the face of the column flange and the end of the beam, by means of parallel full-depth side plates which sandwich and connect the beam(s) and the column together. Top and bottom beam flange cover plates are used, as necessary, to bridge any difference between 3.2.2 Plates: The connection steel plates, which consist of side plates, cover plates, horizontal shear plates, and vertical shear elements, must be fabricated from structural steel that complies with ASTM A572, Grade 50. Nonconnection plates, such as base plates, may be fabricated from structural steel that complies with ASTM A36. In accordance with Section A3.3 of AISC 341-10 for the 2012 IBC (Section 6.3 of AISC 341-05 for the 2009 IBC), supplemental Charpy V-Notch toughness requirements must be applied to plates that are at least 2 inches (51 mm) thick. 3.2.3 Welds: All welds must be produced using E70 electrodes. Weld filler metal and associated welding processes for all welds must comply with one of the following: E71T-8, E70T-6, or E70TG-K2 for flux-cored arc welding (FCAW) E7XT-9 for flux-cored arc welding with gas shielding (FCAW-G) E7018 stick electrodes for shielded metal arc welding (SMAW) F7A2-EXXX for submerged arc welding (SAW) E70S-X, E70C-XM or E70C-XC for Gas Metal Arc Welding (GMAW), except for the short circuit transfer process. *Revised July 2014 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. 1000 Copyright © 2014 Page 1 of 9 ESR-1275 | Most Widely Accepted and Trusted Page 2 of 9 All weld filler metal must comply with Clause 6.3 of AWS D1.8: 2009, along with additional requirements including Charpy V-Notch (CVN) toughness requirements set forth in Section A3.4 of AISC 341-10 for the 2012 IBC (Section 7.3, Appendix W and Appendix X of AISC 341-05 for the 2009 IBC). 4.0 DESIGN AND INSTALLATION 4.1 Structural Design and Prequalification Limits: The structural design procedures must be in accordance with Chapter 22 of the IBC. For determining seismic loads, the system seismic performance coefficients and factors for the IBC are permitted to be as follows: SEISMIC * SYSTEM DEFLECTION RESPONSE MODIFICATION OVERSTRENGTH AMPLIFICATION FACTOR, COEFFICIENT, FACTOR, Cd R Ω0 1 SMF 8 3 5 /2 IMF 4 /2 1 3 4 * Seismic force–resisting system as defined in ASCE/SEI 7, Table 12.2-1. In addition, compliance with the American Welding Society Structural Welding Code—Steel (ANSI/AWS D1.1:2010 for the 2012 IBC and ANSI/AWS D1.1:2004 for the 2009 IBC), with modifications as set forth in AISC 360 Section J2, is required. The design must also take into account requirements set forth in Sections 4.1.1 through 4.1.7 of this report. 4.1.1 Connection Properties: Section properties of the SidePlate® connection system must be provided by SidePlate Systems, Inc., and appropriately incorporated into the structural model used for the frame design/analysis of the lateral load resisting beams and columns, including the modeling of a fully rigid panel zone. bf,bm = Beam flange width, in. (mm) tf,bm = Beam flange thickness, in. (mm) bf,col = Column flange width, in. (mm) Exception: If Eq-1 indicates that a particular combination is not compatible, but is close, SidePlate Systems must be contacted, as a project-specific connection design may be needed. ® (5) Beams must be full length between SidePlate Steel Frame Connections. Exception: Where link beams (See Figure 4) are ® Steel Frame erected between SidePlate Connections, beam end splices must be designed and detailed for the full probable maximum moment capacity of the beam. (6) The ratio of beam span that is the distance between beam hinge centerlines to beam depth must be limited as follows: (a) For SMF systems, 4.5 or greater. (b) For IMF systems, 3 or greater. (7) The width-to-thickness ratios of cross-section elements (beam flange width-thickness ratio and the beam web depth-thickness ratio) must conform to the limits of Section E3.5a (for SMF) or Section E2.5a (for IMF) of AISC 341-10 for the 2012 IBC [Section 9.4 (for SMF) or Section 10.4 (for IMF) of AISC 341-05 for the 2009 IBC]. (8) Lateral bracing of beams must be provided as follows: (a) For SMF systems using wide-flange, built-up I-shapes, or HSS shapes, bracing of the beam must be in conformance with Section E3.4b of AISC 341-10 for the 2012 IBC (Section 9.8 of AISC 341-05 for the 2009 IBC), where the length of the beam is defined as the distance between the ends of the SidePlate connections. As tested, and in conformance with AISC 341, no supplemental lateral bracing is required at or near the plastic hinge due to seismic forces. (b) For IMF systems using wide-flange, built-up I-shapes, or HSS shapes, bracing of the beam must be in conformance with Section E2.4a of AISC 341-10 for the 2012 IBC (Section 10.8 of AISC 341-05 for the 2009 IBC), where the length of the beam is defined as the distance between the ends of the SidePlate connections. As tested, and in conformance with AISC 341, no supplemental lateral bracing is required at or near the plastic hinge due to seismic forces. 4.1.2 Plastic Hinge Location: For calculation purposes, the plastic hinge location in the beam or girder must be located at one-third of the beam or girder depth beyond the end of the side plate away from the column face. 4.1.3 Shear at Plastic Hinge: In accordance with Sections E2.6d and E3.6d of AISC 341-10 for the 2012 IBC (Section 9.2a(3) of AISC 341-05 for the 2009 IBC), the shear at the plastic hinge must be determined by calculation, applying statics that consider gravity loads acting on the beam and the plastic moment capacity (probable maximum moment) at the hinge. 4.1.4 Beam Limitations: In accordance with requirements in AISC 341, beams must satisfy the following limitations: (1) Beams must be rolled wide-flange shapes, hollow structural section (HSS) tubular shapes, or built-up Ishape or box sections conforming to the requirements of Section 3.2.1 of this report. (2) Beam depth is limited to a maximum of W44 (W1100) for rolled shapes. Depth of built-up sections must not exceed the depth permitted for rolled wide-flange shapes, 44 inches (1100 mm). HSS beams must be limited to HSS10 (HSS254) for SMF systems and HSS12 (HSS 304.8) for IMF systems. (3) Beam weight is limited to a maximum of 400 lbs/ft (595.5 kg/m). (4) Beam flange width and thickness for rolled shapes, must satisfy Eq-1 for geometric compatibility: 1 bf,bm + 1.1*tf,bm + /2 in.( 12.7 mm) ≤ bf,col where: (Eq-1) (9) The protected zone consists of the portion of the beam between the ends of the side plates away from the column face to a point one-half the beam depth beyond the plastic hinge location. Figure 4 illustrates typical protected zones. 4.1.5 Column Limitations: Columns must satisfy the following limitations: (1) Columns must be rolled wide-flange shapes, HSS tube shapes, or built-up I-shape or box sections conforming to the requirements of Section 3.2.1 of this report. (2) The beam must be connected to the side plates that are connected to the flange tips of the column. (3) Rolled shape column depth must be limited to a maximum of W44 (W1100). The depth of built-up ESR-1275 | Most Widely Accepted and Trusted wide-flange columns must not exceed that for rolled shapes of 44 inches (1100 mm). Built-up box columns must have a width or depth limited to a maximum of 36 inches (914 mm). Hollow structural section (HSS) columns must be limited to HSS10 (HSS254) for SMF systems and HSS12 (HSS 304.8) for IMF systems. (4) There is no limit on the weight per foot of columns. (5) There are no additional requirements regarding flange thickness. (6) Width-thickness ratios for the flanges and web of columns must conform to the limits of Section E3.5a (for SMF) or Section E2.5a (for IMF) of AISC 341-10 for the 2012 IBC [Section 9.4 (for SMF) or Section 10.4 (for IMF) of AISC 341-05 for the 2009 IBC]. (7) For SMF systems, lateral bracing of the columns in accordance with Section E3.4c of AISC 341-10 for the 2012 IBC (Section 9.7 of AISC 341-05 for the 2009 IBC) is satisfied when a lateral brace is located at or near the intersection of the frame beams and the column. This lateral brace at the column, in conjunction with the side plates, provides indirect support that satisfies the required bracing of column flanges at both the top and bottom beam flanges whether or not the column remains elastic, as defined by Section E3.4c(1) of AISC 341-10 for the 2012 IBC (Section 9.7a of AISC 341-05 for the 2009 IBC). The full-depth side plates have been shown, in full-scale tests, to provide the required indirect lateral bracing of the column flanges through the side plate-to-column flange welds and the connection elements that connect the column web to the side plates. ® moment 4.1.6 Connection Limitations: SidePlate connections must satisfy the following limitations: Page 3 of 9 plates at the top and bottom of the side plates. The design shear strength of the column web must be determined in accordance with AISC 360 Section J10.6a. (2) Column-beam moment ratios must be limited as follows: For SMF Systems, the column-beam moment ratio must be satisfied by applying Eq-2: ∑ ∗ ∑ ∗ > 1.0 where: ∑ ∗ ∑ ∗ = The sum of the projections of the nominal flexural strengths (Mpc) of the column above and below the connection joint, at the location of theoretical hinge formation in the column (i.e., one quarter the column depth above and below the extreme fibers of the side plates, to the beam centerline, with a reduction for the axial force in the column. The nominal flexural strength of the column may be computed in accordance with Eq-3: ∑ = Zec Fyc = The minimum specified yield strength of the column at the connection (psi or Pa). Pu/Ag = Ratio of column axial compressive load, computed in accordance with load and resistance factor (LRFD) provisions, to gross area of the column (psi or Pa). ® (2) All SidePlate connection components must be connected to rolled wide flange, and built-up wide flange or boxed shapes using fillet welds conforming to the requirements of Section 3.2.3, and, where applicable, flare bevel welds when connecting to HSS shapes. The following welds are considered demand critical welds and must conform to the requirements of Section 3.2.3 of this report: ∑ ∗ ∑ ∗ (a) Fillet or flare bevel welds that connect inside face of side plates to the column (b) Fillet or flare bevel welds that connect edges of beam flange to beam flange cover plates, or to HSS flange to side plates (Eq-3) The equivalent plastic section modulus of 1 the column (Zc), at a distance of /4 the column depth from the top and bottom edge of the side plates, projected to the beam centerline (in.3 or m3). ® (1) All SidePlate connection plates must conform to the requirements of Section 3.2.2 of this report. (Eq-2) = The sum of the projections of the expected flexural strengths of the beams at the plastic hinge locations to the column centerline. The location of the plastic hinges in the beam must be one third the beam depth (db/3) away from the end of the side plate away from the column face. The expected flexural strength of the beam may be computed in accordance with Eq-4: ∑ 1.1 (Eq-4) (c) Fillet welds that connect beam flange cover plate to side plates Ry = (3) The protected zone consists of a portion of each side plate that is a 6 inches (152 mm) high by approximately 8 inches (203 mm) long, with the area centered at the column/beam separation (i.e., the “gap”) along the top and bottom edges of each side plate. Figure 4 illustrates typical protected zones. Adjustment coefficient for material overstrength, in accordance with Table A3.1 of AISC 341-10 for the 2012 IBC (Table I-6-1 of AISC 341-05 for the 2009 IBC). Fyb = Specified minimum yield strength of the beam (psi or Pa). Zb = Plastic modulus of the beam cross section (in.3 or m3). Mv = Additional moment due to shear amplification from the location of the beam hinge to the column centerline based on LRFD load combinations (lb‐in. or N‐m). 4.1.7 Column-Beam Relationship Limitations: (1) Although the column panel zone strength is typically sufficient to comply with Section E3.6e of AISC 341-10 for the 2012 IBC (Section 9.3 of AISC 341-05 for the 2009 IBC) due to the strengthening effects of the two side plates in addition to the column web, the column web shear strength must be sufficient to resist the shear loads transferred from the horizontal shear (3) Strength demands at the critical load transfer ® locations through the SidePlate beam-to-column connection and column must be determined by ESR-1275 | Most Widely Accepted and Trusted superimposing M*pb computed based on the known hinge location, and then ramping up the moment demand at each critical section, based upon the span geometry. 4.2 Fabrication: All components of the SidePlate® connection system must be fabricated by an approved fabricator. The approved fabricator must comply with Section 1704.2.5.2 of the 2012 IBC (Section 1704.2.2 of the 2009 IBC). When approved by the registered design professional, SidePlate Systems and the code official, field fabrication may be permitted with special inspections complying with Section 1705 of the 2012 IBC (Sections 1704 and 1707 of the 2009 IBC). Welding must be in accordance with Sections A3.4, D2.3 and I2 of AISC 341-10 for the 2012 IBC (Section 7.3 and Appendix W of AISC 341-05 for the 2009 IBC). All welders, welding operators, and tack welders must demonstrate the ability to produce sound welds as determined by performance qualification tests conducted in accordance with Clause 4, Part C, of AWS D1.1 and Clause 5 of AWS D1.8:2009. Weld runoff tabs must not be used for fillet and flare bevel welds. A Welding Procedure Specification (WPS), prepared in accordance with Section 4 of AWS D1.1 and Clause 6.1 of AWS D1.8:2009 and Sections 1705.2.1, 1705.11.1 and 1705.12.2 of the 2012 IBC, or Section 1704.3.1, Table 1704.3, Section 1707.2 and Section 1708.3 of the 2009 IBC, must be developed for every welding position, welding process, electrode manufacturer, filler metal trade name for the electrode type selected; and for all essential variable changes in the Procedure Qualification Record (PQR) that exceed allowable tolerances. Each WPS must be qualified by a documented PQR in accordance with Section 4 of AWS D1.1. Alternatively, a prequalified WPS may be used, provided the WPS complies with all the conditions of prequalification articulated in Section 3, AWS D1.1 and Clause 6.1, AWS D1.8:2009; for prequalified fillet and CJP welds. 4.3 Erection: Erection must be in conformance with AISC 303, Code of Standard Practice for Steel Buildings and Bridges, Section 7, and must be consistent with the requirements of Chapter 22 of the IBC for Load and Resistance Factor Design or Allowable Stress Design. For new construction of the ® SidePlate system, one of three construction methods may be utilized, as illustrated in Figure 4: (1) shop-fabricated columns with side plates must be field-erected and joined to full-length beams using erection bolts and fillet welds (see Figure 4A; (2) shop-fabricated column trees must be field-erected and joined to drop-in link beams (as necessary) that are spliced at each end to beam stubs extending from the column trees, using either a welded web and flange complete-joint-penetration welded butt joint splice, an end plate bolted splice, or a bolted web with either fillet-welded or bolted flange splice plates (see Figure 4B); or (3) one-piece, shop-fabricated, multi-bay and/or multi-story moment frames with columns, beam(s) and connection(s), with no field welding required (see Figure 4C). When considering the SidePlate system for upgrading or retrofitting existing beam-to-column moment connections, the registered design professional must confirm that the existing structural steel beams and columns are in compliance with Eq. 1 of Section 4.1.4(4) of this report. Such alterations must comply with Chapter 34 of the IBC. For retrofit construction, each side plate must be configured with an initial opening to permit field-welding access. The cut-out pieces of side plate must be retained Page 4 of 9 for use as closure plates to close the access window after welding is completed. The existing complete-jointpenetration welds that join beam flanges to column flange must be removed. The existing shear tab connecting the web of the beam(s) to the column may be left in place. Existing continuity plates, if any, may be left in place to act as horizontal shear plates. 4.4 Quality Control and Quality Assurance: A quality assurance plan, which includes specific quality control and quality assurance activities, must be prepared by a registered design professional employed by SidePlate Systems, Inc. The quality assurance plan must be suitable for incorporation into the construction documents specifying SidePlate® moment connections. Quality assurance welding inspectors and quality control welding inspectors must comply with requirements in Clause 7.2 of AWS D1.8:2009. Under the 2012 IBC, special inspection, testing and structural observations must be included in the quality assurance plan and must conform to Sections 1704.3, 1704.4, 1704.5, 1705.2, 1705.11 and 1705.12 of the 2012 IBC; Chapter N of the AISC 360-10; Chapter J of the AISC 341-10; applicable portions of AISC 303-10; and Clause 7 of AWS D1.8:2009. Under the 2009 IBC, special inspection, testing and structural observations must be included in the quality assurance plan and must conform to Sections 1704.3, 1705, 1707.1, 1707.2, 1708.1, 1708.3, 1709 and 1710 of the 2009 IBC; Part I Section 18, Appendix Q and Appendix W of AISC 341-05; applicable portions of AISC 303-05; and Clause 7 of AWS D1.8:2009. . At a minimum, special inspection must verify compliance of steel with specifications, steel identification, weld filler metal compliance with specifications, weld filler metal identification, qualification of welders, use of appropriate welding materials, storage conditions for welding materials, welded joint preparations, conformance of welding procedures with applicable AWS D1.1 and D1.8 requirements, confirmatory procedure qualification records, and fabrication tolerances. In Seismic Design Categories C, D, E and F, visual inspection and nondestructive testing (NDT) in accordance with Sections 1705.11.1 and 1705.12.2 of the 2012 IBC; Chapter N of AISC 360-10; Chapter J of AISC 341-10; Clause 4.9 of AWS D1.1:2010; and Clause 7 of AWS D1.8:2009 for the 2012 IBC (Sections 1707.2 and 1708.3 of the 2009 IBC; Appendix Q of AISC 341-05; Clause 4.8 of AWS D1.1:2004 and Clause 7 of AWS D1.8:2009 for the 2009 IBC) must be performed. NDT personnel must be qualified in accordance with AWS D1.1 Clause 6.14.6, and Clauses 7.2.2 and 7.2.4 of AWS D1.8:2009. The visual inspection and testing program must include the following items, at a minimum: Full-Length Beam Applications: a. Verification that required rattle space, as illustrated in Figure 5A, has been provided between the side plates based on the detailed width of top cover plate. b. Verification of perpendicular alignment between top face of bottom cover plate and web of full-length beam. c. Verification that the entire exterior face of the outstanding leg of erection angle or bent plate has been placed parallel to the web of the full-length beam, and also defines a vertical plane that coincides with, yet does not protrude beyond, the longitudinal edge of the top cover plate. d. Verification that the center of bottom erection bolt hole is 6 inches (152 mm) above the top face of the bottom cover plate. ESR-1275 | Most Widely Accepted and Trusted e. Magnetic particle testing must be provided for fillet welds connecting the cover plates to the side plates in accordance with AWS D1.1 and Annex G of AWS D1.8:2009, if these fillet welds are installed in the field. Testing rates for individual welders may be reduced in accordance with Section J6 of AISC 341-10 for the 2012 IBC (Section Q5.2 of AISC 34105 for the 2009 IBC). Beam Stub Applications: a. Visual inspection of the welds between the full-depth side plates and column flange tips. b. Ultrasonic testing of complete-joint-penetration butt joint welds contained in the splice between link beam and column tree beam stub. 5.0 CONDITIONS OF USE The SidePlate® Steel Frame Connection Technology described in this report complies with, or is a suitable alternative to what is specified in, those codes listed in Section 1.0 of this report, subject to the following conditions: 5.1 Connection design, including structural notes and ® details for the SidePlate connection, must be in accordance with this report and the applicable code, and must be prepared by a registered design professional employed by SidePlate Systems, Inc. 5.2 Structural design drawings and specifications, shop drawings, and erection drawings must comply with 2012 IBC Section 1603, Section A4 of AISC 360-10; and Sections A4 and I1 of AISC 341-10 for the 2012 IBC (2009 IBC Section 1603, Section A4 of AISC 360-05; and Section 5 of AISC 341-05 for the 2009 IBC). 5.3 Fabrication must comply with Section 4.2 of this report and the “SidePlate® Notes” (as specified by Page 5 of 9 SidePlate Systems, Inc., on the construction documents), and must either be done by a fabricator approved by the building official, as set forth in Section 1704.2.5.2 of the 2012 IBC (Section 1704.2.2 of the 2009 IBC) or must be under special inspection as described in Section 4.2 of this report. 5.4 Erection must be in accordance with Section 4.3 of ® this report and the “SidePlate Notes” (as specified by SidePlate Systems, Inc., on the construction documents). 5.5 Quality control and quality assurance must be provided in accordance with Section 4.4 of this report and the “SidePlate® Notes” (as specified by SidePlate Systems, Inc., on the construction documents). 6.0 EVIDENCE SUBMITTED Data in accordance with the ICC-ES Acceptance Criteria for Steel Moment Frame Connection Systems (AC129), dated October 2012. 7.0 IDENTIFICATION On each sheet of shop detail drawings that contains ® SidePlate technical information showing, in any way, the SidePlate® connection concept, a “Notice of Intellectual Property” must be affixed before release of such information for its intended use. Such notice must be provided to the contractor’s fabrication subcontractor by SidePlate Systems, Inc., in a format suitable to the needs of the fabrication subcontractor’s detailer. A SidePlate® patent label, provided by SidePlate Systems, Inc., must be applied to each moment connection. ESR-1275 | Most Widely Accepted and Trusted Page 6 of 9 ESR-1275 | Most Widely Accepted and Trusted Page 7 of 9 ESR-1275 | Most Widely Accepted and Trusted Page 8 of 9 ESR-1275 | Most Widely Accepted and Trusted Page 9 of 9