Transcription of pl LRFD ASD - Structural Engineering Software
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pl LRFD ASD - Structural Engineering Software
60 / DESIGN GUIDE 1, 2ND EDITION / BASE PLATE AND ANCHOR ROD DESIGN2. Assume a 14-in. 14-in. base plate. The effective ec-centricity is Then, e > ekern; therefore, anchor rods are required to resist the tensile force. The anchor rods are assumed to be from the plate edge. 3. Determine the length of bearing. thus,8. Determine required plate thickness: Note: Since the Mpl is expressed in units of , the plate thickness expressions can be formatted with-out the plate width (B) as such:9. Use plate size: N = 19 in. B = 19 in. t = 14 Example: Large Moment Base Plate Design, Triangular Pressure Distribution ApproachDesign the base plate shown in Figure for an ASD and LRFD required strength of 60 and 90 kips, respectively, and moments from the dead and live loads equal to 480 and 720 kip-in.
required moment strength, Mu pl or Ma pl, for a 1-in. strip of plate due to the tension in the anchor rods is The required moment strength due to the bearing stress distribution is critical. The required plate thickness is: Use a 14 × 14 × 1 -in. base plate. 4. Determine the required tensile strength of the anchor rod. 5.
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