A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Allowable Compression Limits in Prestressed Concrete Members
The allowable compressive stress limits in the ACI 318 Building Code and AASHTO Specifications were based principally on historical justification when prestressed concrete was first introduced in the United States about 50 years ago. As a new material, it was thought to be important to double-check its adequacy with both 'working stress' and 'strength design.' Thus, until today, prestressed concrete is the only major structural material that is required to meet both the working stress and strength design requirements. Based on this research study, it is proposed that strength be used as the primary design theory to determine member capacity in compression at various loading stages, including prestress transfer, lifting, erection, deck weight, superimposed dean and live load. The proposed strength method will frequently allow for higher prestress level than the current empirical allowable compressive stress limits given in the ACI 318-99 Building Code and AASHTO Specifications for Highway Bridges.
Allowable Compression Limits in Prestressed Concrete Members
The allowable compressive stress limits in the ACI 318 Building Code and AASHTO Specifications were based principally on historical justification when prestressed concrete was first introduced in the United States about 50 years ago. As a new material, it was thought to be important to double-check its adequacy with both 'working stress' and 'strength design.' Thus, until today, prestressed concrete is the only major structural material that is required to meet both the working stress and strength design requirements. Based on this research study, it is proposed that strength be used as the primary design theory to determine member capacity in compression at various loading stages, including prestress transfer, lifting, erection, deck weight, superimposed dean and live load. The proposed strength method will frequently allow for higher prestress level than the current empirical allowable compressive stress limits given in the ACI 318-99 Building Code and AASHTO Specifications for Highway Bridges.
Allowable Compression Limits in Prestressed Concrete Members
M. K. Tadros (author) / P. Noppakuwijai (author)
2002
298 pages
Report
No indication
English
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