W12x26 29x106 301 Allowable Deflection Actual < Actual Deflection for Floors Allowable? (in) (in) 1.54 1.55 Yes 1.38 1.55 Yes 1.52 1.55 Yes Using these five spreadsheets, all of the composite sections for every floor and roof were designed. All of the designed sections and their locations are presented via AutoCAD drawings in Chapter 4. Columns The axially loaded members (columns) were designed using the LRFD approach. W-shaped members were selected and designed for axial loading members rather than built-up columns, composite columns or other different shapes. Table 4-1 from the AISC Steel Construction Manual, 2006 was used to determine the available strength in axial compression based on the effective length (KL) with respect to the radius of gyration (ry). Table 10 shows the spreadsheet used for column design. Table 10: Spreadsheet Used for Column Design Column Design Load Area Req’d Choose a Effective Combination Section Slenderness Pu (k) = 1.2D + 1.6L AISC T.1-1 400 10.6 Try W12-50 79.6 from Calculate Pu < ? ФcFcr ФcPn AISC T.4-22 ФcPn Ksi * A (k) ФcFcr 28.35 413.91 Yes This process gave us W-shaped columns for all floors of the building and can be found in Chapter 4.
W12x26 29x106 301 Actual Deflection Allowable Deflection for Floors Actual < Allowable? (in) (in) 1.54 1.55 Yes 1.38 1.55 Yes 1.52 1.55 Yes Using these five spreadsheets, all of the composite sections for every floor and roof were designed. All of the designed sections and their locations are presented via AutoCAD drawings in Chapter 4. Columns The axially loaded members (columns) were designed using the LRFD approach. W-shaped members were selected and designed for axial loading members rather than built-up columns, composite columns or other different shapes. Table 4-1 from the AISC Steel Construction Manual, 2006 was used to determine the available strength in axial compression based on the effective length (KL) with respect to the radius of gyration (ry). Table 10 shows the spreadsheet used for column design. Table 10: Spreadsheet Used for Column Design Column Design Load Combination Area Req’d Choose a Section Effective Slenderness Pu (k) = 1.2D + 1.6L AISC T.1-1 400 10.6 Try W12-50 79.6 ФcFcr from AISC T.4-22 Calculate ФcPn Pu < ФcPn ? Ksi ФcFcr * A (k) 28.35 413.91 Yes This process gave us W-shaped columns for all floors of the building and can be found in Chapter 4.
Design_of_Recreation_Center.docx