سؤال مهم حد يدخل يجاوب عن الفرق بين Lrfd & Asd

[som3a]

السلام عليكم

ممكن حد يقول ايه الفرق بين التصميم بطريقة Allowable Stress Design ASD
وطريقة Load Resistance Factor Design LRFD

عند تصميم المنشآت الحديديه Steel Structures

 

[tarek_abulail]

LRFD Vs ASD

[FONT='Times-Roman','serif']load and resistance factor design[/font][FONT='Times-Bold','serif'][/font]
[FONT='Times-Roman','serif']A method of proportioning structural[/font]
[FONT='Times-Roman','serif']Members such that the computed forces produced in the members[/font]
[FONT='Times-Roman','serif']By factored loads do not exceed the member design[/font]
[FONT='Times-Roman','serif']Strength [also called “load and resistance factor design”[/font]
[FONT='Times-Roman','serif'](LRFD)]. The term “strength design” is used in the design of[/font]
[FONT='Times-Roman','serif']Concrete and masonry structural elements.[/font]
[FONT='Times-Roman','serif']A method of proportioning structural members and their connections[/font]
[FONT='Times-Roman','serif']Using load and resistance factors such that no applicable[/font]
[FONT='Times-Roman','serif']Limit state is reached when the structure is subjected to appropriate[/font]
[FONT='Times-Roman','serif']Load combinations. The term “LRFD” is used in the[/font]
[FONT='Times-Roman','serif']Design of steel and wood structures.[/font]

[FONT='Times-Bold','serif']ALLOWABLE STRESS DESIGN.[/font]​

[FONT='Times-Bold','serif'][/font]
[FONT='Times-Roman','serif']A method of proportioning structural members, such that elastically computed stresses produced in the members by nominal loads do not exceed specified[/font]
[FONT='Times-Roman','serif']Allowable stresses (also called “working stress design”).[/font]
[FONT='Times-Roman','serif']Ref: INTERNATIONAL BUILDING CODE 2006[/font]

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[aymankhedr]

مشكور ياباشمهندس

 

[meee]

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