3.1 Structural Engineering

Click the cells below to choose a level of standard for each attribute. Show Tooltips

IN THIS SECTION:  Live Load  |  Wind  |  Seismic  |  Blast  |  Flood

AttributeBaseline
Tier 1 High Performance
★★
Tier 2 High Performance
★★★
Tier 3 High Performance
Verification
Measurements & VerificationPlans & SpecificationsCalculations & AnalysisReference StandardDesign Basis of DesignConstruction Verification
  Live Load
Structure100 psfDesign Building for Structural Modifications in FutureDesign team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at all performance levels. Describe structure live load performance criteria.The design professional shall prepare special inspection and testing requirements for the project. The materials sections of the Code and many referenced standards therein, e.g. AISC Seismic Requirements, Table Q, make additional requirements for inspection that should be considered in the development of the testing and inspection program for construction.
VibrationsLimited Vibration ControlEnhanced Vibration Control for Still EnvironmentsEnhanced Vibration Control for Laboratories and Sensitive EquipmentVibrations can be measured after building is complete to verify performance.Design team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at all performance levels.AISC Design Guide Series 11, Floor Vibrations Due to Human ActivityDescribe design narrative for how the floor structure design addresses the effects of vibration.
AttributeBaseline
Tier 1 High Performance
★★
Tier 2 High Performance
★★★
Tier 3 High Performance
Verification
Measurements & VerificationPlans & SpecificationsCalculations & AnalysisReference StandardDesign Basis of DesignConstruction Verification
  Wind
Structure15% in 507% in 503% in 50Wind tunnel testing can be used during the design phase to determine more accurate wind loads on the building. A rigid model test can be used to determine pressures applied to the building. An aero-elastic model test can be used to evaluate the dynamic response of the building under wind loading. Consult with the A/E team to determine whether wind tunnel testing is appropriate for the building being considered.Design team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at all performance levels.ASCE 7-10Describe wind resistance design assumptions.
AttributeBaseline
Tier 1 High Performance
★★
Tier 2 High Performance
★★★
Tier 3 High Performance
Verification
Measurements & VerificationPlans & SpecificationsCalculations & AnalysisReference StandardDesign Basis of DesignConstruction Verification
  Seismic
StructureLife SafetyReduced DamageImmediate OccupancyContinued OperationsDesign team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at all performance levels.ASCE 41-06Describe seismic resistance design assumptionsThe design review should include: Review of any site-specific seismic criteria employed in the analysis including the development of site-specific spectra and ground motion time histories. Review of acceptance criteria used to demonstrate the adequacy of structural elements and systems to withstand the calculated force and deformation demands, together with that laboratory and other data used to substantiate these criteria. Review of the preliminary design including the selection of structural system and the configuration of structural elements. Review of the final design of the entire structural system and all supporting analyses.
NonstructureHeavy DamageModerate DamageLimited DamageMinimal DamageDesign team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at all performance levels.ASCE 41-06
AttributeBaseline
Tier 1 High Performance
★★
Tier 2 High Performance
★★★
Tier 3 High Performance
Verification
Measurements & VerificationPlans & SpecificationsCalculations & AnalysisReference StandardDesign Basis of DesignConstruction Verification
  Blast
Progressive CollapseISC Level IIIISC Level IVUFC Occupancy Category IVDesign team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at all performance levels.Interagency Security Criteria UFC 4-023-03Describe progressive collapse ISC Level used in design.
InteriorISC Level IIISC Level IIIISC Level IVHazards Outside Building FootprintDesign team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at ★ level and up.Interagency Security CriteriaDescribe interior ISC Level used in design.
Critical UtilitiesISC Level IIISC Level IIIISC Level IVHardened and Distributed Redundant Building SystemsDesign team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Interagency Security CriteriaDescribe critical utilities ISC Level used in design.
Perimeter BarriersParking and Standing Restrictions Around BuildingISC Level IIIISC Level IVISC Level IV with Enhanced Standoff DistancesCrash testing of anti-ram barriers can be performed to verify barrier performance. Crash testing is typically required for new or unusual barrier configurations that have not been previously tested and analyzed.Design team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at ★ level and up.Interagency Security CriteriaDescribe perimeter barriers ISC Level used in design.
AttributeBaseline
Tier 1 High Performance
★★
Tier 2 High Performance
★★★
Tier 3 High Performance
Verification
Measurements & VerificationPlans & SpecificationsCalculations & AnalysisReference StandardDesign Basis of DesignConstruction Verification
  Flood
Flood Mitigation100-Year Flood Hazard500-Year Flood HazardDetermined on a Site Specific BasisDesign team should produce plans and specifications so requirements are implemented. Verification is the same at all levels.Design Team should provide calculations showing requirements are met. Calculations required at all performance levels.FEMA Flood Maps ASCE 24-05, "Flood Resistant Design and Construction"Describe how structural design is responsive to the flood level performance metric.
^