2102 S Flower St - DEF3 - Trellis - Plan

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which is silver in color. The drill point and lead threads of the screws are heat-treated to a relatively high hardness to facilitate drilling and thread forming. The balance of the screw is treated to a lower hardness complying with the hardness limits for SAE J429 Grade 5 screws and the hardness limits for ASTM A449-10 Type 1 screws. Table 1 provides screw descriptions (size, tpi, length), nominal diameters, head styles, drive type / size, head diameters, point styles, drilling capacities and minimum required protrusion lengths. 3.1.1 Type 1: These #10 screws have coarse threads and a phillips pan head. See Figure 1. 3.1.2 Types 2A and 2B: These #10 screws have coarse threads and a hex washer head. See Figure 2. 3.1.3 Type 3: These #10 screws have fine threads and a phillips wafer head. See Figure 3. 3.1.4 Type 4: These #12 screws have coarse threads and a hex washer head. See Figure 4. 3.1.5 Type 5: These #12 screws have coarse threads and a hex washer head. See Figure 5. 3.1.6 Type 6: These #12 screws have coarse threads and a phillips undercut flat head. See Figure 6. 3.1.7 Type 7: These #12 screws have fine threads and a hex washer head. See Figure 7. 3.1.8 Type 8: These 1/4-inch screws have coarse threads and a hex washer head. See Figure 8. 3.1.9 Type 9: These 1/4-inch screws have fine threads and a hex washer head. See Figure 9. 3.1.10 Type 10: These 1/4-inch screws have fine threads and a hex washer head. See Figure 10. 3.1.11 Type 11: These 5/16-inch screws have coarse threads and a hex washer head. See Figure 11. 3.1.12 Types 12A and 12B: These 5/16-inch screws have fine threads and a hex washer head. At the end of the screw, the shank of type 12A screws are notched to form a shank slot. See Figures 12 and 13. 3.2 Screw Material: The screws are formed from alloy steel wire complying with the manufacturer’s specifications. The screws are heat-treated to a through-hardness of 28 to 34 HRC. The drilling point and lead threads are heat-treated to a minimum of 52 HRC. 3.3 Connected Material: The connected steel materials must comply with one of the standards listed in Section A3.1 of AISI S100 and must have the minimum thickness, yield strength and tensile strength shown in the tables in this report. 4.0 DESIGN AND INSTALLATION 4.1 Design: Dril-Flex® Self-Drilling Structural Screws have been evaluated for use in engineered connections of cold- formed steel construction. Design of the connections must comply with Section J4 of AISI S100. Nominal and available screw tension and shear strengths for the screws are shown in Table 2. Available connection shear, pull-over and pull-out capacities are given in Tables 3, 4 and 5, respectively. For tension connections, the lowest of the available screw tension strength, pull-over strength and pull-out strength, in accordance with Tables 2, 4 and 5, respectively, must be used for design. For shear connections, the lower of the available screw shear strength and the shear (bearing) strength, in accordance with Tables 2 and 3, respectively, must be used for design. Design provisions for tapping screw connections subjected to combined shear and tension loading are outside the scope of the report. The connection shear strength is for connections where the connected steel elements are in direct contact with one another. Under the 2024 and 2021 IBC, for screws used in framing connections, in order for the screws to be considered fully effective, the minimum spacing between the fasteners must be 3 times the nominal screws diameter and the minimum edge distance must be 1.5 times the nominal screw diameter. Under the 2018 and 2015 IBC, for screws used in framing connections, in order for the screws to be considered fully effective, the minimum spacing between the screws and the minimum edge distance must be 3 times the nominal diameter of the screws; except when the edge is parallel to the direction of the applied force, the minimum edge distance may be 1.5 times the nominal screw diameter. When the spacing between screws is less than 3 times the nominal screws diameter, but at least 2 times the screw diameter, the connection shear strength values in Table 3 must be reduced by 20 percent (refer to Section B1.5.1.3 of AISI S240). See Table 6 for applicable spacing and edge distance dimensions for each screw size. For screws used in applications other than framing connections, the minimum spacing between screws must be 3 times the nominal screws diameter and the minimum edge and end distance must be 1.5 times the nominal screw diameter. 8