A form of limit states design used by AASHTO standard specifications as an alternative to Working Stress Design is called?

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Multiple Choice

A form of limit states design used by AASHTO standard specifications as an alternative to Working Stress Design is called?

Explanation:
The concept here is limit states design, specifically the approach AASHTO uses that applies load factors to nominal loads to meet specified limit states. This method is commonly called Load Factor Design (often part of the LRFD framework), and it serves as an alternative to Working Stress Design by targeting reliability through factors that account for uncertainties in loads and resistances. It’s not about a lighting standard, a leveling course, or the live load itself—the other options don’t describe a design philosophy. Load Factor Design aligns with the AASHTO philosophy of designing for strength, serviceability, and other limit states using factors to guarantee performance under real-world conditions.

The concept here is limit states design, specifically the approach AASHTO uses that applies load factors to nominal loads to meet specified limit states. This method is commonly called Load Factor Design (often part of the LRFD framework), and it serves as an alternative to Working Stress Design by targeting reliability through factors that account for uncertainties in loads and resistances. It’s not about a lighting standard, a leveling course, or the live load itself—the other options don’t describe a design philosophy. Load Factor Design aligns with the AASHTO philosophy of designing for strength, serviceability, and other limit states using factors to guarantee performance under real-world conditions.

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