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445R-99
Truss model approaches and related theories for the design of reinforced concrete members to resist shear are presented. Realistic models for the design of deep beams, corbels, and other nonstandard structural members are illustrated. The background theories and the complementary nature of a number of different approaches for the shear design of structural concrete are discussed. These relatively new procedures provide a unified, intelligible, and safe design framework for proportioning structural concrete under combined load effects. Contents: 1.1--Scope and Objectives 1.2--Historical developmet of shear design provisions 1.3--Overview of current ACI design procedures 1.4--Summary
2.1--Introduction 2.2--Compression field theory 2.3--Stress-strain relationships for diagonally cracked concrete 2.4--Modified compression field theory 2.5--Rotating-angle softened-truss model 2.6--Design procedure based on modified compression field theory
3.1--Introduction 3.2--Overview of recent European codes 3.3--Modified sectional-truss model approach 3.4--Truss models with crack fiction 3.5--Fixed-angle softened-truss models 3.6--Summary
4.1--Introduction 4.2--Empirical methods 4.3--Mechanisms of shear transfer 4.4--Models for members without transverse reinforcement 4.5--Important parameters influencing shear capacity 4.6--Conclusions
5.1--Introduction 5.2--Shear-friction hypothesis 5.3--Empirical developments 5.4--Analytical developments 5.5--Code developments
6.1--Introduction 6.2--Design of B regions 6.3--Design of D regions
7.1--Introduction 7.2--Truss models 7.3--Members without transverse reinforcement 7.4--Additional work
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ACI
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