Simplified Shear Design of Structural Concrete Members: Appendixes (2005) / Chapter Skim
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From page 256... ...
I-1 Appendix I: Utilization of the Process 12-50 I.1 Application of the Process 12-50 to the Design Database The Process 12-50 is a standardized pre-/post- process that can be used to generate inputs for various computational processes (CPs) (programs, spreadsheets, etc)
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From page 257... ...
I-2 I.3 How to View Design Database Using NCHRP Viewer The Design Database results are stored in two mdb files; i.e., DesignDatabaseI.mdb and DesignDatabaseII.mdb. The former contains results for simply-supported members and the latter contains results for continuous members.
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I-3 Report ID – A unique numerical value used to reference (tag) a single computational result, which may be from analysis, resistance computations, loads, or a specification value, and is a potential output item from one or more processes as defined above.
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I-4 Table I-1. Process ID Table (Design Approaches)
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I-5 Table I-3 NCHRP 12-61 ReportIDs ReportID Stage Description 1 Description 2 Description 3 Description 4 Description 5 Unit 60000 sectional height h in Composite 60001 web width bw in 60002 moment of inertia Ig in4 Beam only 60003 distance from centroidal axis of gross section neglecting reinforcement to extreme fiber in tension yt in Beam only 60004 gross area of section Ag in2 Beam only 60005 effective width beff in 60006 flange thickness tf in slab thickness 60007 area of nonprestressed tension reinforcement As in2 60008 distance from extreme compression fiber to centroid of prestressed reinforcement ds in 60009 area of prestressed reinforcement in tension zone Ap in2 60010 area of total prestressed reinforcement Apa in2 60011 distance from extreme compression fiber to centroid of prestressed reinforcement in tension zone dp in 60012 distance from extreme compression fiber to centroid of total prestressed reinforcement dps in 60013 effective steel prestress after losses fse ksi 60014 specified compressive strength of concrete fcp ksi Beam only 60015 specified compressive strength of concrete fcp_s ksi Slab
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From page 261... ...
I-6 ReportID Stage Description 1 Description 2 Description 3 Description 4 Description 5 Unit 60016 factored axial load normal to cross section occurring simultaneously with Vu Nu kips 60017 factored shear force at section Vu kips 60018 shear force at section due to unfactored dead load Vd kips 60019 vertical component of effective prestress force at section Vp kips 60020 factored moment at section Mu k-ft 60021 moment due to dead load Md k-ft 60022 distance from end support x ft 60023 span length L ft 60024 angle of inclination of diagonal compressive stresses to the longitudinal axis of the member theta deg 60025 factor accounting for shear resistance of cracked concrete beta - 65001 N/A location ft 65002 N/A Span ft 65003 effective depth or distance from the top fiber to the centroid of tension steel including prestressed steel de in 65004 effective shear depth taken as the greater of 0.9d or 0.72h dv in 65005 distance from extreme compression fiber to centroid of longitudinal tension reinforcement but need not be less than 0.8h for circular sections and pre-stressed members d in 65006 distance from bottom fiber to center of gravity of the section yb in
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I-7 ReportID Stage Description 1 Description 2 Description 3 Description 4 Description 5 Unit 65007 gross area of section Agc in2 Composite 65008 moment of inertia of gross composite section Igc in4 Composite 65009 distance from bottom fiber to center of gravity of the composite section ybc in Composite 65010 eccentricity of design load or prestressing force parallel to axis measured from the centroid of the section e in Beam only 65011 distance of composite section centroid from the centroid of precast unit c in Composite 65012 area of concrete on flexural tension side of member Act in2 65013 N/A dcr in 65014 N/A UncrA in2 65015 modulus of elasticity of concrete Ec in4 65016 N/A rho_s - 65017 specified yield strength of nonprestressed reinforcement fy psi 65018 modulus of elasticity of nonprestressed reinforcement Es ksi 65019 specified tensile strength of prestressing tendons fpu ksi 65020 specified yield strength of prestressing tendons fpy ksi 65021 modulus of elasticity of prestressing reinforcement Ep ksi 65022 stress in the prestressing steel when the stress in the surrounding concrete is zero fpo ksi 65023 effective stress in the prestressing steel after losses fpe ksi 65024 compressive stress in concrete at centroid of cross section fpc ksi
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I-8 ReportID Stage Description 1 Description 2 Description 3 Description 4 Description 5 Unit resisting externally applied loads or at junction of web and flange when the centroid lies within the flange 65025 stress due to unfactored dead load at extreme fiber of section where tensile stress is caused by externally applied loads fd ksi 65026 effective prestressing force Pe kips 65027 maximum aggregate size ag in 65028 equivalent value of sz which allows for influence of aggregate size sze in 65029 crack spacing parameter sz in 65030 factored shear force at section due to externally applied loads occurring simultaneously with Mmax Vi kips 65031 maximum factored moment at section due to externally applied loads Mmax kip-ft 65032 factored shear stress v psi 65033 N/A v/f'c - 65034 N/A theta deg 65035 N/A beta - 65036 N/A ex in/in 65037 N/A fpc ksi 70000 N/A x ft 70001 N/A dv in 70002 N/A Vu k 70003 N/A vu ksi
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I-9 ReportID Stage Description 1 Description 2 Description 3 Description 4 Description 5 Unit 70004 cracking moment Mcr k_ft 70005 N/A Mu k_ft 70006 nominal shear strength provided by concrete when diagonal cracking results from combined shear and moment Vci_std k AASHTO STANDARD 70007 nominal shear strength provided by concrete when diagonal cracking results from excessive principal tensile stress in web Vcw_std k AASHTO STANDARD 70008 amount of required shear reinforcement pvfy_std psi AASHTO STANDARD 70009 nominal shear resistance provided by tensile stresses in the concrete Vc_lrfd k AASHTO LRFD 70010 amount of required shear reinforcement pvfy_lrfd psi AASHTO LRFD 70011 angle of inclination of diagonal compressive stresses to the longitudinal axis of the member theta_lrfd deg AASHTO LRFD 70012 nominal shear strength provided by concrete Vc_p k Proposal 70013 amount of required shear reinforcement pvfy_p psi Proposal 70014 angle of inclination of diagonal compressive stresses to the longitudinal axis of the member theta_p deg Proposal 70015 nominal shear strength provided by concrete Vc_csa k CSA 70016 amount of required shear reinforcement pvfy_csa psi CSA 70017 angle of inclination of diagonal compressive stresses to the longitudinal axis of the member theta_csa deg CSA 70018 shear strength when the first shear or flexure crack occurs Vcr_r2k k R2K
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I-10 ReportID Stage Description 1 Description 2 Description 3 Description 4 Description 5 Unit 70019 amount of required shear reinforcement pvfy_r2k psi R2K 80000 amount of required shear reinforcement psi
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From page 266... ...
I-11 Table I-4 tblTable Content ProcessID ProcessName ExecutableName ProcessAbbrev Comments Version LegendText SpecVersionID 1 AASHTO STANDARD Standard ST Amount of required shear reinforcement 2 AASHTO LRFD LRFD LR Amount of required shear reinforcement 3 Proposal Proposal PR Amount of required shear reinforcement 4 CSA CSA CS Amount of required shear reinforcement 5 RESPONSE2000 R2K R2 Amnt of required shear reinforcement 6 All Information Spreadsheet SS For all information choose this only
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From page 267... ...
I-12 Figure I-1 Data Flow and Processing Start Preprocessing; Generate Input data for Database Calculate the required amount of shear reinforcement using spreadsheets or RESPONSE 2000 program Generate ASCII output (or comma delimited output) using Matlab (or any other computer language)
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From page 268... ...
I-13 Figure I-2 NCHRP Viewer Window
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