Remember me on this computer. Enter the email address you signed up with and we'll email you a reset link. Need an account? Click here to sign up. Download Free PDF. Aluminum desgin. Roberto Jimenez. A short summary of this paper. For flat plate elements supported along one edge, the effective width is the distance from the unsupported edge of element to toe of the fillet or bend. For flat plate elements supported along two edges, the effective width is the distance between the toe of the fillets or bends.
For bent plates, if the inside corner radius exceeds 4 times the thickness, then the inside radius shall be assumed equal to 4 times the thickness in calculating b mm, in. Bracing points are the points at which the compression flange is restrained against lateral movement or twisting mm, in. Tabulated allowable stresses for additional alloys Articles 6. The safety factors for the basic allowable stresses shall follow those specified for building-type structures. Modulus of Tension Compr. Rod 42 35 35 25 20 88 56 69 10 and Bar 0.
Other strength properties are corresponding minimum expected values. For deflection calculations, an average modulus of elasticity is used; numerically this is MPa ksi lower than values in this column. Gage length across a butt weld. Values also apply to thicknesses less than or equal to 9. When welded with alloy filler wire. Set Use the smaller of the two values: a See Appendix B for details of members and components, and for kt nu Tension, axial, net Any tension member Eq. Of a weld should be taken equal to the allowable stress for nonwelded material.
Local buckling may need to be in Table For cases not covered in Table , the value checked for certain circumstances. The allowable compression stress in the extreme fiber on For single-web beams, rectangular tubes, and box the gross section due to bending shall be based on: sections bent about the strong axis, the effect of the variation of the moment in the span can be accounted for by replacing a.
Cb may conservatively be taken as 1. NCHRP Project 2 will establish strength and The allowable compression stress in components under failure criteria for bending about the diagonal axis of square uniform compression on the gross section due to bending and rectangular tubes. The information given in Table for shall be based on: square or rectangular tubes bent about their principal axis should provide equal or lesser allowable stresses than a.
The allowable compression stress in a component in its own plane on the gross section due to bending shall be based on: a. The allowable stress also shall not exceed the allowable stress for the section as given in Eqs. Additional The allowable compressive stress in components based information on torsional or torsional—flexural buckling is on an axial load on the gross section shall be calculated based provided in Articles 3. This same c. The allowable stress also shall not exceed the allowable stress for the section as given in Eq.
This value shall be used for a ratio of edge distance to fastener diameter of 2 or greater. Edge distance is the distance from the center of the fastener to the edge of the material in the direction of the applied load and shall not be less than 1. The tabulated values for locations nonwelded members. The buckling formulas for nonwelded within 25 mm 1 in.
See Article 6. These formulas are given in Table In for members with transverse welds not meeting these applying these formulas to welded structures, the maximum conditions. An Most structural aluminum alloys attain their strength by exception is the case of welded tubes Eqs.
Welding causes local , for which the buckling coefficients are determined annealing, which produces a zone of lower strength along from the formulas in Tables and , using the mm both sides of the weld bead. This Article gives provisions for in. Table For luminaires and traffic support assemblies of aluminum alloy up through 9. For luminaires and traffic support assemblies of aluminum alloy , up through 6.
Filler Alloya , Parent Alloy — In calculating Fw, the strength across a groove weld shall be as given in Table For yield strength Ftyw, Fcyw , the allowable stress is based on a calculated yield strength equal to 0.
The column-buckling formulas for the reduced strength material are calculated using the buckling coefficients given in Table , regardless of alloy and temper. The buckling coefficients given in Tables the buckling strength. For these cases, the strength is and shall be used to develop the buckling formulas. Table provides allowable stresses for building-type structures. The allowable stresses for building-type structures are obtained by multiplying the allowable stresses for bridge-type structures by 1.
Skip to content Home. Search for:. I am working with the Aluminum Design Manual but I am considering updating to the Aluminum design manual. Have the general formulas indicated in table format such as Table 3. See Attached.
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