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2007 SUPPLEMENT TO THE IRC Section R614 Add new section to read as shown: (RB34-06/07) SECTION R614 STRUCTURAL INSULATED PANEL WALL CONSTRUCTION R614,1 General. Structural insulated panel (SIP) walls shall be designed in accordance with the provisions of this section. When the provisions of this section are used to design structural insulated panel walls, project drawings, typical details and specifications are not required to bear the seal of the architect or engineer responsible for design, unless otherwise required by the state law of the jurisdiction having authority. R614.2 Applicability limits. The provisions of this section shall control the construction of exterior structural insulated panel walls and interior Toad -bearing structural insulated panel walls for buildings not greater than 60 feet (18 288 mm) in length perpendicular to the joist or truss span, not greater than 40 feet (10 973 mm) in width parallel to the joist span or truss and not greater than two stories in height with each story not greater than 10 feet (3048 mm) high. All exterior walls installed in accordance with the provisions of this section shall be considered as Toad -bearing walls. Structural insulated panel walls constructed in accordance with the provisions of this section shall be limited to sites subjected to a maximum design wind speed of 130 miles per hour, Exposure A, B or C, and a maximum ground snow load of 70 pounds per foot (3.35 kN/m2), and Seismic Zones A, B, and C. 8614,3 Materials. Structural insulated panels (SIP) shall comply with the following criteria: R614.3.1 Core. The core material of structural insulated panels (SIP) shall be composed of foam plastic insulation meeting the requirements of ASTM C 578, and shall have a minimum density of 0.90 Ib/cu ft or an approved alternative. All cores shall meet the requirements of Section R314. Structural insulated panels (SIP) core insulation shall bear a label with the manufacturer identification, product standard and type, flame spread/smoke- developed index and the name of quality assurance agency. R614.3.2 Facing. Facing materials for structural insulated panels shall be wood structural panels conforming to DOC PS 1 or DOC PS 2, each having a minimum nominal thickness of 7/16 inches (11 mm). Facing shall be identified by a grade mark or certificate of inspection issued by an approved agency. The facing materials shall meet the minimum qualification test values specified in Table R614.3.2. TABLE R614.3.2 MINIMUM PROPERTIES FOR ORIENTED STRAND BOARD FACING MATERIAL IN SiP WALLS Thickness (in.) 7/16 Product Sheathing Flatwise Stiffness° (Ibf-in2lft) Along 54,700 Across , 27,100 Flatwise Strengthb (Ibf-in/ft) Along 950 Across 870 Tensionb (Ibf/ft) Along 6,800 Across 6,500 Density (pcf) 35 For SI: 1 inch = 25.4 mm. 1 lbf-int/ft = 9.415 x 10"e kiloNewton meter2/meter, 1 lbf-in/ft = 3.707 x 10-4 kiloNewton meter/meter, 1 lbf/ft = 0.0146 Newton/millimeter, 1 pcf = 16.018 kilogram/meter. a. Mean test value shall be in accordance with Section 7.6 of DOC PS2. b. Characteristic test value (5th percent with 75% confidence). c. Density shall be based on oven -dry weight and oven -dry volume. R614.3.3 Adhesive. Adhesives used to structurally laminate the foam plastic insulation core material to the structural wood facers shall conform to ASTM D 2559 or approved alternative specifically intended for use as an adhesive used in the lamination of structural insulated panels. Each container of adhesive shall bear a label with the adhesive manufacturer name, adhesive name and type and the name of the quality assurance agency. R614.3.4 Lumber. The minimum lumber framing materials used for SIPs prescribed in this document is NLGA graded No. 2 Spruce -pine -fir. Other wood species/grades that meet or exceed the mechanical properties and specific gravity of No. 2 Spruce -pine -fir shall be permitted for substitution. R614.3.5 SIP screws. Screws used for the erection of SIPs as specified in Section R614.5 shall be provided by the SIPs manufacturer and shall be sized to fully penetrate the main member — the wood member to which the assembly is being attached. R614.4 SIP wall panels. SIPs for wall systems shall comply with Figure R614.4 and shall have minimum panel thickness in accordance with Tables R614.5(1) and R614.5(2) for above -grade walls. All SiPs shall be identified by grade mark or certificate of inspection issued by an approved agency. IRC -66 Copyrighted O 2007 ICC 4ALL RIGHTS RESERVED) Licensed to Neil Erickson pursuant to License Agreement w°h r.IC No further reproductions authorized or distribution authorized ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION ISA VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE L CENSE AGREEMENT AND SUBJECT TO CIVIL AND CRIMINAL PENALT/ES THEREUNDER.