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Trial design check to the draft NAASRA bridge design specification in limit state format

Marcus Brand

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Abstract

This paper compares the trial design check using the 1987 draft NAASRA bridge design specification of a composite plate web girder bridge designed to the 1976 NAASRA specification. The paper comments on the differences between the new and old rules, using an 'over stress margin' factor for comparison. The factor represents the percentage increase in design action that will cause the structural element to go into over stress (A).

About this research paper

What this paper is about

This paper compares the trial design check using the 1987 draft NAASRA bridge design specification of a composite plate web girder bridge designed to the 1976 NAASRA specification. The paper comments on the differences between the new and old rules, using an 'over stress margin' factor for comparison. The factor represents the percentage increase in design action that will cause the structural element to go into over stress (A).

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Available abstract

This paper compares the trial design check using the 1987 draft NAASRA bridge design specification of a composite plate web girder bridge designed to the 1976 NAASRA specification. The paper comments on the differences between the new and old rules, using an 'over stress margin' factor for comparison. The factor represents the percentage increase in design action that will cause the structural element to go into over stress (A).

Key concepts: Bridge (graph theory), Hull, Limit state design, Engineering, Structural engineering, Limit (mathematics), Margin (machine learning), Stress (linguistics)

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